Multimedia and the Semantic Web / European Semantic Web Conference 2005, Heraklion, Crete. 29th May 2005.
http://eprints.soton.ac.uk/260954/
In this paper, we propose a model of automatic image annotation based on propagation of keywords. The model works on the premise that visually similar image content is likely to have similar semantic content. Image content is extracted using local descriptors at salient points within the image and quantising the feature-vectors into visual terms. The visual terms for each image are modelled using techniques taken from the information retrieval community. The modelled information from an unlabelled query image is compared to the models of a corpus of labelled images and labels are propagated from the most similar labelled images to the query image
Scale Saliency: Applications in Visual Matching,Tracking and View-Based Objec...Jonathon Hare
Distributed Multimedia Systems 2003 / Visual Information Systems 2003, Florida International University, Miami, Florida, USA, 24 - 26 Sep 2003.
http://eprints.soton.ac.uk/258295/
In this paper, we introduce a novel technique for image matching and feature-based tracking. The technique is based on the idea of using the Scale-Saliency algorithm to pick a sparse number of ‘interesting’ or ‘salient’ features. Feature vectors for each of the salient regions are generated and used in the matching process. Due to the nature of the sparse representation of feature vectors generated by the technique, sub-image matching is also accomplished. We demonstrate the techniques robustness to geometric transformations in the query image and suggest that the technique would be suitable for view-based object recognition. We also apply the matching technique to the problem of feature tracking across multiple video frames by matching salient regions across frame pairs. We show that our tracking algorithm is able to explicitly extract the 3D motion vector of each salient region during the tracking process, using a single uncalibrated camera. We illustrate the functionality of our tracking algorithm by showing results from tracking a single salient region in near real-time with a live camera input.
Semantic Retrieval and Automatic Annotation: Linear Transformations, Correlat...Jonathon Hare
Multimedia Content Access: Algorithms and Systems IV (SPIE Electronic Imaging 2010). January 2010.
http://eprints.soton.ac.uk/268496/
This paper proposes a new technique for auto-annotation and semantic retrieval based upon the idea of linearly mapping an image feature space to a keyword space. The new technique is compared to several related techniques, and a number of salient points about each of the techniques are discussed and contrasted. The paper also discusses how these techniques might actually scale to a real-world retrieval problem, and demonstrates this though a case study of a semantic retrieval technique being used on a real-world data-set (with a mix of annotated and unannotated images) from a picture library.
Content-based image retrieval using a mobile device as a novel interfaceJonathon Hare
Storage and Retrieval Methods and Applications for Multimedia 2005, San Jose, California, USA, 18 - 19 Jan 2005.
http://eprints.soton.ac.uk/260419/
This paper presents an investigation into the use of a mobile device as a novel interface to a content-based image retrieval system. The initial development has been based on the concept of using the mobile device in an art gallery for mining data about the exhibits, although a number of other applications are envisaged. The paper presents a novel methodology for performing content-based image retrieval and object recognition from query images that have been degraded by noise and subjected to transformations through the imaging system. The methodology uses techniques inspired from the information retrieval community in order to aid efficient indexing and retrieval. In particular, a vector-space model is used in the efficient indexing of each image, and a two-stage pruning/ranking procedure is used to determine the correct matching image. The retrieval algorithm is shown to outperform a number of existing algorithms when used with query images from the mobile device.
Searching Images: Recent research at SouthamptonJonathon Hare
Information Retrieval group seminar series. The University of Glasgow. 21st February 2011.
Southampton has a long history of research in the areas of multimedia information analysis. This talk will focus on some of the recent work we have been involved with in the area of image search. The talk will start by looking at how image content can be represented in ways analogous to textual information and how techniques developed for indexing text can be adapted to images. In particular, the talk will introduce ImageTerrier, a research platform for image retrieval that is built around Glasgow's Terrier software. The talk will also cover some of our recent work on image classification and image search result diversification.
Searching Images: Recent research at SouthamptonJonathon Hare
Intelligence, Agents, Multimedia Seminar series. University of Southampton. 7th March 2011.
Southampton has a long history of research in the areas of multimedia information analysis. This talk will focus on some of the recent work we have been involved with in the area of image search. The talk will
start by looking at how image content can be represented in ways analogous to textual information and how techniques developed for indexing text can be adapted to images. In particular, the talk will introduce ImageTerrier, a research platform for image retrieval that is built around the University of Glasgow's Terrier text retrieval software. The talk will also cover some of our recent work on image classification and image search result diversification.
Searching Images: Recent research at SouthamptonJonathon Hare
Knowledge Media Institute seminar series. The Open University. 23rd March 2011.
Southampton has a long history of research in the areas of multimedia information analysis. This talk will focus on some of the recent work we have been involved with in the area of image search. The talk will start by looking at how image content can be represented in ways analogous to textual information and how techniques developed for indexing text can be adapted to images. In particular, the talk will introduce ImageTerrier, a research platform for image retrieval that is built around the University of Glasgow's Terrier text retrieval software. The talk will also cover some of our recent work on image classification and image search result diversification.
Multimodal Searching and Semantic Spaces: ...or how to find images of Dalmati...Jonathon Hare
Tutorial at the "Reality of the Semantic Gap in Image Retrieval" tutorial at the first international conference on Semantics And digital Media Technology (SAMT 2006). 6th December 2006.
Engine explained in this ppt ,takes a query image as an input do some process on it ,compare this image with images present in database and retrieve similar images. It uses the concept of content based image retrieval.
Scale Saliency: Applications in Visual Matching,Tracking and View-Based Objec...Jonathon Hare
Distributed Multimedia Systems 2003 / Visual Information Systems 2003, Florida International University, Miami, Florida, USA, 24 - 26 Sep 2003.
http://eprints.soton.ac.uk/258295/
In this paper, we introduce a novel technique for image matching and feature-based tracking. The technique is based on the idea of using the Scale-Saliency algorithm to pick a sparse number of ‘interesting’ or ‘salient’ features. Feature vectors for each of the salient regions are generated and used in the matching process. Due to the nature of the sparse representation of feature vectors generated by the technique, sub-image matching is also accomplished. We demonstrate the techniques robustness to geometric transformations in the query image and suggest that the technique would be suitable for view-based object recognition. We also apply the matching technique to the problem of feature tracking across multiple video frames by matching salient regions across frame pairs. We show that our tracking algorithm is able to explicitly extract the 3D motion vector of each salient region during the tracking process, using a single uncalibrated camera. We illustrate the functionality of our tracking algorithm by showing results from tracking a single salient region in near real-time with a live camera input.
Semantic Retrieval and Automatic Annotation: Linear Transformations, Correlat...Jonathon Hare
Multimedia Content Access: Algorithms and Systems IV (SPIE Electronic Imaging 2010). January 2010.
http://eprints.soton.ac.uk/268496/
This paper proposes a new technique for auto-annotation and semantic retrieval based upon the idea of linearly mapping an image feature space to a keyword space. The new technique is compared to several related techniques, and a number of salient points about each of the techniques are discussed and contrasted. The paper also discusses how these techniques might actually scale to a real-world retrieval problem, and demonstrates this though a case study of a semantic retrieval technique being used on a real-world data-set (with a mix of annotated and unannotated images) from a picture library.
Content-based image retrieval using a mobile device as a novel interfaceJonathon Hare
Storage and Retrieval Methods and Applications for Multimedia 2005, San Jose, California, USA, 18 - 19 Jan 2005.
http://eprints.soton.ac.uk/260419/
This paper presents an investigation into the use of a mobile device as a novel interface to a content-based image retrieval system. The initial development has been based on the concept of using the mobile device in an art gallery for mining data about the exhibits, although a number of other applications are envisaged. The paper presents a novel methodology for performing content-based image retrieval and object recognition from query images that have been degraded by noise and subjected to transformations through the imaging system. The methodology uses techniques inspired from the information retrieval community in order to aid efficient indexing and retrieval. In particular, a vector-space model is used in the efficient indexing of each image, and a two-stage pruning/ranking procedure is used to determine the correct matching image. The retrieval algorithm is shown to outperform a number of existing algorithms when used with query images from the mobile device.
Searching Images: Recent research at SouthamptonJonathon Hare
Information Retrieval group seminar series. The University of Glasgow. 21st February 2011.
Southampton has a long history of research in the areas of multimedia information analysis. This talk will focus on some of the recent work we have been involved with in the area of image search. The talk will start by looking at how image content can be represented in ways analogous to textual information and how techniques developed for indexing text can be adapted to images. In particular, the talk will introduce ImageTerrier, a research platform for image retrieval that is built around Glasgow's Terrier software. The talk will also cover some of our recent work on image classification and image search result diversification.
Searching Images: Recent research at SouthamptonJonathon Hare
Intelligence, Agents, Multimedia Seminar series. University of Southampton. 7th March 2011.
Southampton has a long history of research in the areas of multimedia information analysis. This talk will focus on some of the recent work we have been involved with in the area of image search. The talk will
start by looking at how image content can be represented in ways analogous to textual information and how techniques developed for indexing text can be adapted to images. In particular, the talk will introduce ImageTerrier, a research platform for image retrieval that is built around the University of Glasgow's Terrier text retrieval software. The talk will also cover some of our recent work on image classification and image search result diversification.
Searching Images: Recent research at SouthamptonJonathon Hare
Knowledge Media Institute seminar series. The Open University. 23rd March 2011.
Southampton has a long history of research in the areas of multimedia information analysis. This talk will focus on some of the recent work we have been involved with in the area of image search. The talk will start by looking at how image content can be represented in ways analogous to textual information and how techniques developed for indexing text can be adapted to images. In particular, the talk will introduce ImageTerrier, a research platform for image retrieval that is built around the University of Glasgow's Terrier text retrieval software. The talk will also cover some of our recent work on image classification and image search result diversification.
Multimodal Searching and Semantic Spaces: ...or how to find images of Dalmati...Jonathon Hare
Tutorial at the "Reality of the Semantic Gap in Image Retrieval" tutorial at the first international conference on Semantics And digital Media Technology (SAMT 2006). 6th December 2006.
Engine explained in this ppt ,takes a query image as an input do some process on it ,compare this image with images present in database and retrieve similar images. It uses the concept of content based image retrieval.
Under Image processing techniques, it describes how we can extract the important part of the image and how can we compare it with the existing technologies. It also describe the future scope of this method
Content-Based Image Retrieval (CBIR) systems employ color as primary feature with texture and shape as secondary features. In this project a simple, image retrieval system will be implemented
Comparative between global threshold and adaptative threshold concepts in ima...AssiaHAMZA
A digital image can be considered as a discrete representation of data possessing both spatial (layout) and
intensity (colour) information. Pixel intensities form a gateway communication between human perception
of things and digital image processing.
Image thresholding is a simple form of image segmentation. It is a way to create a binary image from a
grayscale or full-color image. This is typically done in order to separate "object" or foreground pixels from
background pixels to aid in image processing.
In this paper we aim to present a small and modest comparative between two kind of image thresholding.
The local and adapatative concepts may not give the same correct results at the end of a process, and we
aim to demonstrate which kind of the two
Computer graphics are pictures and films created using computers. Usually, the term refers to computer-generated image data created with help from specialized graphical hardware and software. It is a vast and recent area in computer science.
BUILDING A SCALABLE MULTIMEDIA WEB OBSERVATORYJonathon Hare
Web and Internet Science research group seminar series. University of Southampton. 13th March 2013.
The web is inherently multimedia in nature, and contains data and information in many different audio, visual and textual forms. To fully understand the nature of the web and the information contained within it, it is necessary to harness all modalities of data. Within the EU funded ARCOMEM project, we are building a platform for crawling and analysing samples of web and social-web data at scale. Whilst the project is ostensibly about issues related to intelligent web-archiving, the ARCOMEM software has features that make it ideal for use as a platform for a scalable Multimedia Web Observatory.
This talk will describe the ARCOMEM approach from data harvesting through to detailed content analysis and demonstrate how this approach relates to a multimedia web observatory. In addition to describing the overall framework, I'll show some of the research aspects of the system related specifically to multimodal multimedia data in small (>100GB) to medium-scale (multi-terabyte) web archives, and demonstrate how these are targeted to our Parliamentarian and Journalist end-users.
Talk on behalf of the Royal Institute of Great Britain as part of the "Searching for Science" event which was run together with Nature Network London. Held at the Apple Store Regent Street Lecture Theatre, London. 4th October 2007.
Photo collections are also getting help from the science of searching. If you’ve ever done a Google image search you’ll know they’re not always brilliant – that’s because the search engine’s not searching the images themselves, it’s looking at the words around them. But a team at the University of Southampton is giving computers a better eye for what’s actually in an image, so not only can you find what you’re after more easily, the computer can learn how to sort new photos itself.
Under Image processing techniques, it describes how we can extract the important part of the image and how can we compare it with the existing technologies. It also describe the future scope of this method
Content-Based Image Retrieval (CBIR) systems employ color as primary feature with texture and shape as secondary features. In this project a simple, image retrieval system will be implemented
Comparative between global threshold and adaptative threshold concepts in ima...AssiaHAMZA
A digital image can be considered as a discrete representation of data possessing both spatial (layout) and
intensity (colour) information. Pixel intensities form a gateway communication between human perception
of things and digital image processing.
Image thresholding is a simple form of image segmentation. It is a way to create a binary image from a
grayscale or full-color image. This is typically done in order to separate "object" or foreground pixels from
background pixels to aid in image processing.
In this paper we aim to present a small and modest comparative between two kind of image thresholding.
The local and adapatative concepts may not give the same correct results at the end of a process, and we
aim to demonstrate which kind of the two
Computer graphics are pictures and films created using computers. Usually, the term refers to computer-generated image data created with help from specialized graphical hardware and software. It is a vast and recent area in computer science.
BUILDING A SCALABLE MULTIMEDIA WEB OBSERVATORYJonathon Hare
Web and Internet Science research group seminar series. University of Southampton. 13th March 2013.
The web is inherently multimedia in nature, and contains data and information in many different audio, visual and textual forms. To fully understand the nature of the web and the information contained within it, it is necessary to harness all modalities of data. Within the EU funded ARCOMEM project, we are building a platform for crawling and analysing samples of web and social-web data at scale. Whilst the project is ostensibly about issues related to intelligent web-archiving, the ARCOMEM software has features that make it ideal for use as a platform for a scalable Multimedia Web Observatory.
This talk will describe the ARCOMEM approach from data harvesting through to detailed content analysis and demonstrate how this approach relates to a multimedia web observatory. In addition to describing the overall framework, I'll show some of the research aspects of the system related specifically to multimodal multimedia data in small (>100GB) to medium-scale (multi-terabyte) web archives, and demonstrate how these are targeted to our Parliamentarian and Journalist end-users.
Talk on behalf of the Royal Institute of Great Britain as part of the "Searching for Science" event which was run together with Nature Network London. Held at the Apple Store Regent Street Lecture Theatre, London. 4th October 2007.
Photo collections are also getting help from the science of searching. If you’ve ever done a Google image search you’ll know they’re not always brilliant – that’s because the search engine’s not searching the images themselves, it’s looking at the words around them. But a team at the University of Southampton is giving computers a better eye for what’s actually in an image, so not only can you find what you’re after more easily, the computer can learn how to sort new photos itself.
A Linear-Algebraic Technique with an Application in Semantic Image RetrievalJonathon Hare
Image and Video Retrieval: 5th International Conference, CIVR 2006, Tempe, AZ, USA, July 2006.
http://eprints.soton.ac.uk/262870/
This paper presents a novel technique for learning the underlying structure that links visual observations with semantics. The technique, inspired by a text-retrieval technique known as cross-language latent semantic indexing uses linear algebra to learn the semantic structure linking image features and keywords from a training set of annotated images. This structure can then be applied to unannotated images, thus providing the ability to search the unannotated images based on keyword. This factorisation approach is shown to perform well, even when using only simple global image features.
IMAGE DIVERSITY ANALYSIS: CONTEXT, OPINION AND BIASJonathon Hare
The First International Workshop on Living Web: Making Web Diversity a true asset, Collocated with the 8th International Semantic Web Conference ISWC-2009, Westfields Conference Center, Washington DC
http://eprints.soton.ac.uk/268168/
The diffusion of new Internet and web technologies has increased the distribution of different digital content, such as text, sounds, images and videos. In this paper we focus on images and their role in the analysis of diversity. We consider diversity as a concept that takes into account the wide variety of information sources, and their differences in perspective and viewpoint. We describe a number of different dimensions of diversity; in particular, we analyze the dimensions related to image searches and context analysis, emotions conveyed by images and opinion mining, and bias analysis.
OpenIMAJ and ImageTerrier: Java Libraries and Tools for Scalable Multimedia A...Jonathon Hare
ACM Multimedia 2011, Scottsdale, Arizona, USA, 28 Nov - 01 Dec 2011.
http://eprints.soton.ac.uk/273040/
OpenIMAJ and ImageTerrier are recently released open- source libraries and tools for experimentation and devel- opment of multimedia applications using Java-compatible programming languages. OpenIMAJ (the Open toolkit for Intelligent Multimedia Analysis in Java) is a collection of libraries for multimedia analysis. The image libraries con- tain methods for processing images and extracting state- of-the-art features, including SIFT. The video and audio libraries support both cross-platform capture and process- ing. The clustering and nearest-neighbour libraries contain efficient, multi-threaded implementations of clustering al- gorithms. The clustering library makes it possible to easily create BoVW representations for images and videos. OpenI- MAJ also incorporates a number of tools to enable extremely- large-scale multimedia analysis using distributed computing with Apache Hadoop. ImageTerrier is a scalable, high-performance search engine platform for content-based image retrieval applications using features extracted with the OpenIMAJ library and tools. The ImageTerrier platform provides a comprehensive test- bed for experimenting with image retrieval techniques. The platform incorporates a state-of-the-art implementation of the single-pass indexing technique for constructing inverted indexes and is capable of producing highly compressed index data structures.
Sharp images and fuzzy concepts: Multimedia retrieval and the semantic gapJonathon Hare
Talk for the University of Southampton IEEE Student Branch. 6th March 2012.
Southampton has a long history of research in the areas of multimedia information analysis. This talk will focus on some of the work we have been involved with in the areas of multimedia analysis and search. The talk will start by looking at the broad range of multimedia analysis from low-level features to semantic understanding. This will be accompanied by demos of different multimedia analysis and search software developed over the years at Southampton.
We'll then explore the underpinnings of visual information analysis and see some computer vision techniques in action. In particular, we'll then explore how visual content can be represented in ways analogous to textual information and how techniques developed for analysing and indexing text can be adapted to images.
Finally, we'll look at how the next generation of multimedia analysis software is being developed, and introduce two open-source software projects being developed at Southampton that are paving the way for future research.
Mind the Gap: Another look at the problem of the semantic gap in image retrievalJonathon Hare
Multimedia Content Analysis, Management and Retrieval 2006, San Jose, California, USA, 17 - 19 Jan 2006
http://eprints.soton.ac.uk/261887/
This paper attempts to review and characterise the problem of the semantic gap in image retrieval and the attempts being made to bridge it. In particular, we draw from our own experience in user queries, automatic annotation and ontological techniques. The first section of the paper describes a characterisation of the semantic gap as a hierarchy between the raw media and full semantic understanding of the media's content. The second section discusses real users' queries with respect to the semantic gap. The final sections of the paper describe our own experience in attempting to bridge the semantic gap. In particular we discuss our work on auto-annotation and semantic-space models of image retrieval in order to bridge the gap from the bottom up, and the use of ontologies, which capture more semantics than keyword object labels alone, as a technique for bridging the gap from the top down.
Bridging the Semantic Gap in Multimedia Information Retrieval: Top-down and B...Jonathon Hare
Mastering the Gap: From Information Extraction to Semantic Representation / 3rd European Semantic Web Conference, Budva, Montenegro. May 2006.
http://eprints.soton.ac.uk/262737/
Semantic representation of multimedia information is vital for enabling the kind of multimedia search capabilities that professional searchers require. Manual annotation is often not possible because of the shear scale of the multimedia information that needs indexing. This paper explores the ways in which we are using both top-down, ontologically driven approaches and bottom-up, automatic-annotation approaches to provide retrieval facilities to users. We also discuss many of the current techniques that we are investigating to combine these top-down and bottom-up approaches.
SEWM'14 keynote: Mining Events from Multimedia StreamsJonathon Hare
Keynote at the ICMR 2014 Workshop on Social Events in Web Multimedia (SEWM). Glasgow, UK. 1st April 2014.
The aggregation of items from social media streams, such as Flickr photos and Twitter tweets, into meaningful groups can help users contextualise and effectively consume the torrents of information on the social web. This task is challenging due to the scale of the streams and the inherently multimodal nature of the information being contextualised.
In this talk we’ll describe some of our recent work on trend and event detection in multimedia data streams. We focus on scalable streaming algorithms that can be applied to multimedia data streams from the web and the social web. The talk will cover two particular aspects of our work: mining Twitter for trending images by detecting near duplicates; and detecting social events in multimedia data with streaming clustering algorithms. We will describe in detail our techniques, and explore open questions and areas of potential future work, in both these tasks.
WAISFest'11: Southampton Googles final presentation. 18th July 2011.
Building a "street view" camera system and "Google Goggles" visual style building recognition system all tied up with linked data.
Mining Events from Multimedia Streams (WAIS Research group seminar June 2014)Jonathon Hare
Web and Internet Science research group seminar series. University of Southampton. 25th June 2014.
The aggregation of items from social media streams, such as Flickr photos and Twitter tweets, into meaningful groups can help users contextualise and effectively consume the torrents of information on the social web. This task is challenging due to the scale of the streams and the inherently multimodal nature of the information being contextualised.
In this talk I'll describe some of our recent work on trend and event detection in multimedia data streams. We focus on scalable streaming algorithms that can be applied to multimedia data streams from the web and the social web. The talk will cover two particular aspects of our work: mining Twitter for trending images by detecting near duplicates; and detecting social events in multimedia data with streaming clustering algorithms. I'll will describe in detail our techniques, and explore open questions and areas of potential future work, in both these tasks.
Evolving a Medical Image Similarity SearchSujit Pal
Slides for talk at Haystack Conference 2018. Covers evolution of an Image Similarity Search Proof of Concept built to identify similar medical images. Discusses various image vectorizing techniques that were considered in order to convert images into searchable entities, an evaluation strategy to rank these techniques, as well as various indexing strategies to allow searching for similar images at scale.
DELAB - sequence generation seminar
Title
[Paper Review] Knowing when to look: Adaptive Attention via A Visual Sentinel for Image Captioning
Table of contents
1. Image Captioning
2. Knowing When to Look: Adaptive Attention via A Visual
Sentinel for Image Captioning
3. Model Architecture
1) Encoder-Decoder for Image Captioning
2) Spatial Attention Model
3) Adaptive Attention Model
4. Results
5. Adaptive Attention Analysis
A COMPARATIVE ANALYSIS OF RETRIEVAL TECHNIQUES IN CONTENT BASED IMAGE RETRIEVALcscpconf
Basic group of visual techniques such as color, shape, texture are used in Content Based Image Retrievals (CBIR) to retrieve query image or sub region of image to find similar images in image database. To improve query result, relevance feedback is used many times in CBIR to help user to express their preference and improve query results. In this paper, a new approach for image retrieval is proposed which is based on the features such as Color Histogram, Eigen Values and Match Point. Images from various types of database are first identified by using edge detection techniques .Once the image is identified, then the image is searched in the particular database, then all related images are displayed. This will save the retrieval time. Further to retrieve the precise query image, any of the three techniques are used and comparison is done w.r.t. average retrieval time. Eigen value technique found to be the best as compared with other two techniques.
A comparative analysis of retrieval techniques in content based image retrievalcsandit
Basic group of visual techniques such as color, shape, texture are used in Content Based Image
Retrievals (CBIR) to retrieve query image or sub region of image to find similar images in
image database. To improve query result, relevance feedback is used many times in CBIR to
help user to express their preference and improve query results. In this paper, a new approach
for image retrieval is proposed which is based on the features such as Color Histogram, Eigen
Values and Match Point. Images from various types of database are first identified by using
edge detection techniques .Once the image is identified, then the image is searched in the
particular database, then all related images are displayed. This will save the retrieval time.
Further to retrieve the precise query image, any of the three techniques are used and
comparison is done w.r.t. average retrieval time. Eigen value technique found to be the best as
compared with other two techniques.
Learning a Joint Embedding Representation for Image Search using Self-supervi...Sujit Pal
Image search interfaces either prompt the searcher to provide a search image (image-to-image search) or a text description of the image (text-to-image search). Image to Image search is generally implemented as a nearest neighbor search in a dense image embedding space, where the embedding is derived from Neural Networks pre-trained on a large image corpus such as ImageNet. Text to image search can be implemented via traditional (TF/IDF or BM25 based) text search against image captions or image tags.
In this presentation, we describe how we fine-tuned the OpenAI CLIP model (available from Hugging Face) to learn a joint image/text embedding representation from naturally occurring image-caption pairs in literature, using contrastive learning. We then show this model in action against a dataset of medical image-caption pairs, using the Vespa search engine to support text based (BM25), vector based (ANN) and hybrid text-to-image and image-to-image search.
Query Image Searching With Integrated Textual and Visual Relevance Feedback f...IJERA Editor
There are many researchers who have studied the relevance feedback in the literature of content based image
retrieval (CBIR) community, but none of CBIR search engines support it because of scalability, effectiveness
and efficiency issues. In this, we had implemented an integrated relevance feedback for retrieving of web
images. Here, we had concentrated on integration of both textual features (TF) and visual features (VF) based
relevance feedback (RF), simultaneously we also tested them individually. The TFRF employs and effective
search result clustering (SRC) algorithm to get salient phrases. Then a new user interface (UI) is proposed to
support RF. Experimental results show that the proposed algorithm is scalable, effective and accurated
The Search for a New Visual Search Beyond Language - StampedeCon AI Summit 2017StampedeCon
Words are no longer sufficient in delivering the search results users are looking for, particularly in relation to image search. Text and languages pose many challenges in describing visual details and providing the necessary context for optimal results. Machine Learning technology opens a new world of search innovation that has yet to be applied by businesses.
In this session, Mike Ranzinger of Shutterstock will share a technical presentation detailing his research on composition aware search. He will also demonstrate how the research led to the launch of AI technology allowing users to more precisely find the image they need within Shutterstock’s collection of more than 150 million images. While the company released a number of AI search enabled tools in 2016, this new technology allows users to search for items in an image and specify where they should be located within the image. The research identifies the networks that localize and describe regions of an image as well as the relationships between things. The goal of this research was to improve the future of search using visual data, contextual search functions, and AI. A combination of multiple machine learning technologies led to this breakthrough.
A novel Image Retrieval System using an effective region based shape represen...CSCJournals
With recent improvements in methods for the acquisition and rendering of shapes, the need for retrieval of shapes from large repositories of shapes has gained prominence. A variety of methods have been proposed that enable the efficient querying of shape repositories for a desired shape or image. Many of these methods use a sample shape as a query and attempt to retrieve shapes from the database that have a similar shape. This paper introduces a novel and efficient shape matching approach for the automatic identification of real world objects. The identification process is applied on isolated objects and requires the segmentation of the image into separate objects, followed by the extraction of representative shape signatures and the similarity estimation of pairs of objects considering the information extracted from the segmentation process and shape signature. We compute a 1D shape signature function from a region shape and use it for region shape representation and retrieval through similarity estimation. The proposed region shape feature is much more efficient to compute than other region shape techniques invariant to image transformation.
Similar to Saliency-based Models of Image Content and their Application to Auto-Annotation by Semantic Propagation (20)
Adjusting primitives for graph : SHORT REPORT / NOTESSubhajit Sahu
Graph algorithms, like PageRank Compressed Sparse Row (CSR) is an adjacency-list based graph representation that is
Multiply with different modes (map)
1. Performance of sequential execution based vs OpenMP based vector multiply.
2. Comparing various launch configs for CUDA based vector multiply.
Sum with different storage types (reduce)
1. Performance of vector element sum using float vs bfloat16 as the storage type.
Sum with different modes (reduce)
1. Performance of sequential execution based vs OpenMP based vector element sum.
2. Performance of memcpy vs in-place based CUDA based vector element sum.
3. Comparing various launch configs for CUDA based vector element sum (memcpy).
4. Comparing various launch configs for CUDA based vector element sum (in-place).
Sum with in-place strategies of CUDA mode (reduce)
1. Comparing various launch configs for CUDA based vector element sum (in-place).
Chatty Kathy - UNC Bootcamp Final Project Presentation - Final Version - 5.23...John Andrews
SlideShare Description for "Chatty Kathy - UNC Bootcamp Final Project Presentation"
Title: Chatty Kathy: Enhancing Physical Activity Among Older Adults
Description:
Discover how Chatty Kathy, an innovative project developed at the UNC Bootcamp, aims to tackle the challenge of low physical activity among older adults. Our AI-driven solution uses peer interaction to boost and sustain exercise levels, significantly improving health outcomes. This presentation covers our problem statement, the rationale behind Chatty Kathy, synthetic data and persona creation, model performance metrics, a visual demonstration of the project, and potential future developments. Join us for an insightful Q&A session to explore the potential of this groundbreaking project.
Project Team: Jay Requarth, Jana Avery, John Andrews, Dr. Dick Davis II, Nee Buntoum, Nam Yeongjin & Mat Nicholas
Data Centers - Striving Within A Narrow Range - Research Report - MCG - May 2...pchutichetpong
M Capital Group (“MCG”) expects to see demand and the changing evolution of supply, facilitated through institutional investment rotation out of offices and into work from home (“WFH”), while the ever-expanding need for data storage as global internet usage expands, with experts predicting 5.3 billion users by 2023. These market factors will be underpinned by technological changes, such as progressing cloud services and edge sites, allowing the industry to see strong expected annual growth of 13% over the next 4 years.
Whilst competitive headwinds remain, represented through the recent second bankruptcy filing of Sungard, which blames “COVID-19 and other macroeconomic trends including delayed customer spending decisions, insourcing and reductions in IT spending, energy inflation and reduction in demand for certain services”, the industry has seen key adjustments, where MCG believes that engineering cost management and technological innovation will be paramount to success.
MCG reports that the more favorable market conditions expected over the next few years, helped by the winding down of pandemic restrictions and a hybrid working environment will be driving market momentum forward. The continuous injection of capital by alternative investment firms, as well as the growing infrastructural investment from cloud service providers and social media companies, whose revenues are expected to grow over 3.6x larger by value in 2026, will likely help propel center provision and innovation. These factors paint a promising picture for the industry players that offset rising input costs and adapt to new technologies.
According to M Capital Group: “Specifically, the long-term cost-saving opportunities available from the rise of remote managing will likely aid value growth for the industry. Through margin optimization and further availability of capital for reinvestment, strong players will maintain their competitive foothold, while weaker players exit the market to balance supply and demand.”
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Saliency-based Models of Image Content and their Application to Auto-Annotation by Semantic Propagation
1. Saliency-based Models of Image
Content and their Application to
Auto-Annotation by Semantic
Propagation
Jonathon S. Hare and Paul H. Lewis
Intelligence, Agents, Multimedia Group
Department of Electronics and Computer Science
University of Southampton
{jsh02r, phl}@ecs.soton.ac.uk
2. Introduction
• Image search is much easier if all of the images in a collection
have adequate annotations
• Annotating images manually is a time-consuming and
laborious process
• We propose a simple method for automatic image
annotation based on the idea that visually similar images
should have similar annotations
• Visual similarity is assessed using local descriptors of salient
regions in an information model
• We also address how the quality of the automatic
annotations can be assessed
3. Image Auto-Annotation
Propagating the Semantics (I)
• Simple idea based on propagating semantics between
visually similar images
• Image content is modelled using concepts from
information theory
• Modelling the images in this way allows us to assess
image similarity in a well-founded framework
• We tried two models:
• Vector-Space
• Latent Semantic Indexing
4. Image Auto-Annotation
Propagating the Semantics (II)
• A training corpus of pre-annotated images is created
• An unannotated image is compared to images in the
training corpus using the information models to find
visually similar images
• The annotations from a number of the closest visually
similar images in the training corpus are then applied, or
propagated, to the unannotated image
5. Information Theory
Modelling Textual Information::vector-spaces
• A common approach to modelling documents containing
textual information is to use a vector-space
• Each document is represented by a vector of term-
occurrences
• Each element of the vector is the count of the
number of times the corresponding term occurred in
the document
• Similar documents should have similar vectors
• i.e. the angle between vectors is small
6. Information Theory
Modelling Textual Information::latent semantic indexing
• LSI takes the vector-space model a step further
• LSI attempts to deal with issues of synonymy and
polysemy between terms by using linear algebra
• Term-occurrence vectors are arranged in a term-
document matrix and factored using SVD
• Using the resulting matrices from the SVD it is
possible to create a rank-k estimate of the original
term-document matrix
• Queries can be performed in the k-subspace instead
of the original space
7. Modelling Images
Representing Images using Textual Information Models
• Salient regions are found in
the image from peaks in a
difference-of-Gaussian
pyramid
• Local descriptors (SIFT) are
calculated for each region
• The feature descriptors are
quantised by assigning them to
the closest visual terms in a
predefined vocabulary
• Term-occurrence vectors are
calculated
8. Experimentation
Dataset
• Test dataset consisted of 697
annotated photographic
images
• Original annotations were
processed to remove plurals
and correct mistakes
• 170 processed annotation
terms in total
• Training and test sets were
created by randomly cutting
the dataset into halves
9. Experimentation
Evaluation Technique::considerations (I)
• For any auto-annotation system to be worthwhile it must
perform better than if the annotations were guessed
based on the empirical distribution of keywords in the
training set
10. Experimentation
Evaluation Technique::considerations (II)
• Images in the training set may have been incorrectly
annotated
• For comparative purposes this is not a problem as all
algorithms have to deal with the same data
• However, the reported overall performance is likely to
be less than it would be with correct annotations
11. Experimentation
Evaluation Technique::performance measure
• A reasonable assumption to make of
an annotation algorithm should be
that it will return approximately the
correct number of annotations
• Previous auto-annotation work has
used the normalised score measure
developed by Barnard et al.
• However, this measure does not
sufficiently weight incorrect
guesses, resulting in many more
guessed annotations than correct
annotations when the score is
maximised
r = Number of correctly predicted
annotations
n = Number of actual true annotations
w = Number of wrongly predicted
annotations
N = Number of terms in annotation
vocabulary
12. Experimentation
Evaluation Technique::performance measure
• We have instead adopted the
use of precision and recall to
measure performance
• Unlike in retrieval, we want
both high precision and high
recall
r = Number of correctly predicted
annotations
n = Number of actual true annotations
w = Number of wrongly predicted
annotations
15. Future Work
(I)
• Our current annotation approach is slightly deficient in
that it doesn’t allow us to select individual terms
• This needs to be addressed
• This work used a fixed number of images from which to
draw the annotations
• It is possible that this number could be chosen
dynamically for each unannotated image, based on the
similarity between its vector representation and the
vectors of the training images
16. Future Work
(II)
• The SIFT local descriptor is generated from grey-level
information only
• The addition of other local descriptors may improve
performance
• A local colour descriptor is currently planned
17. Conclusions
• The results show promise for our relatively simple auto-
annotation technique
• The LSI based method marginally outperforms the vector-
space approach
• This result confirms the findings of our work on image
retrieval using the two approaches