The document provides an overview of digital image processing (DIP) and geographic information systems (GIS) software systems, outlining the key hardware and software components needed for DIP including processors, memory, displays, storage, operating systems, compilers, and image processing software. It also describes important image processing functions such as preprocessing, display and enhancement, information extraction, photogrammetric information extraction, and integration with GIS. Open source DIP and GIS software like ILWIS are also mentioned.
this presentation briefly describes the digital image processing and its various procedures and techniques which include image correction or rectification with remote sensing data/ images. it also contains various image classification techniques.
this presentation briefly describes the digital image processing and its various procedures and techniques which include image correction or rectification with remote sensing data/ images. it also contains various image classification techniques.
This presentation is about the raster and vector data in GIS which is important and costly as well, through the presentation we will learn about both type of data.
it is highly useful for geography students in the field of remote sensing and it is in very simple and explanatory for the purpose of simplification with relevant images in this ppt.
hyperspectral remote sensing and its geological applicationsabhijeet_banerjee
this is an introductory presentation on hyperspectral remote sensing, which essential deals with the distinguishing features, imaging spectrometers and its types, and some of the geological applications of hyperspectral remote sensing.
A remote sensing system uses a detector to sense the reflected or emitted energy from the earth's surface, perhaps modified by the intervening atmosphere. The sensor can be on a satellite, aircraft, or drone. The sensor turns the energy into a voltage, which an analog to digital converter turns into a single integer value (called the Digital Number, or DN) for the energy. Alternatively a digital detector can store the DN directly. We can then display this value with an appropriate color to build up an image of the region sensed by the system. The DN represents the energy sensed by the sensor in a particular part of the electromagnetic spectrum, emitted or reflected from a particular region. The principles can also be applied to sonar imagery, especially useful in water where sound penetrates readily whereas electromagnetic energy attenuates rapidly.
Definitions,
Remote sensing systems can be active or passive: active systems put out their own source of energy (a large "flash bulb") whereas passive systems use solar energy reflected from the surface or thermal energy emitted by the surface. Active systems can achieve higher resolution.
Satellite resolution considers four things: spatial, spectral, radiometric, and temporal resolution.
Electromagnetic radiation and the atmosphere control many aspects of a remote sensing system.
Satellite orbits determine many characteristics of the imagery, what the satellite sees, and how often it revisits an area.
The signal to noise ratio is important for the design of remote sensing systems.
Satellite band tradeoffs.
Interpreting satellite reflectance patterns and images uses various statistical measures to assess surface properties in the image.
The colors used on the display are gray shading for single bands, and RGB for multi-band composites. We can also perform image merge and sharpening to combine the advantages of both panchromatic (higher spatial resolution) and color imagery (better differentiation of surface materials).
Keys for image analysis
Hyperspectral imagery
Spectral reflectance library--different materials reflect radiation differently
Digital Elevation Model (DEM) is the digital representation of the land surface elevation with respect to any reference datum. DEM is frequently used to refer to any digital representation of a topographic surface. DEM is the simplest form of digital representation of topography. GIS applications depend mainly on DEMs, today.
With increasing use of remote sensing, the need for crispier, accurate and enhanced precision has deemed to the improvement in the spectral and spatial resolution of remotely sensed imagery. For most of the systems, panchromatic images typically have higher resolution, while multispectral images offer information in several spectral channels. Resolution merge (also called pan-sharpening) allows us to combine advantages of both kinds of images by merging them into one.
The resolution merge or pan sharpening is the technique used to obtain high resolution multi-spectral images. The color information is collected from the coarse resolution satellite data and the intensity from the high resolution satellite data.
The main constraint is to preserve the spectral information for aspects like land use. Saving theimage from distortion of the spectral characteristics is important in the merged dataset.
The most common techniques for spatial enhancement of low-resolution imagery combining high and low resolution data can be used are: Intensity-Hue-Saturation, Principal Component, Multiplicative and Brovey Transform.
THIS PRESENTATION IS TO HELP YOU PERFORM THE TASK STEP BY STEP.
This presentation is about the raster and vector data in GIS which is important and costly as well, through the presentation we will learn about both type of data.
it is highly useful for geography students in the field of remote sensing and it is in very simple and explanatory for the purpose of simplification with relevant images in this ppt.
hyperspectral remote sensing and its geological applicationsabhijeet_banerjee
this is an introductory presentation on hyperspectral remote sensing, which essential deals with the distinguishing features, imaging spectrometers and its types, and some of the geological applications of hyperspectral remote sensing.
A remote sensing system uses a detector to sense the reflected or emitted energy from the earth's surface, perhaps modified by the intervening atmosphere. The sensor can be on a satellite, aircraft, or drone. The sensor turns the energy into a voltage, which an analog to digital converter turns into a single integer value (called the Digital Number, or DN) for the energy. Alternatively a digital detector can store the DN directly. We can then display this value with an appropriate color to build up an image of the region sensed by the system. The DN represents the energy sensed by the sensor in a particular part of the electromagnetic spectrum, emitted or reflected from a particular region. The principles can also be applied to sonar imagery, especially useful in water where sound penetrates readily whereas electromagnetic energy attenuates rapidly.
Definitions,
Remote sensing systems can be active or passive: active systems put out their own source of energy (a large "flash bulb") whereas passive systems use solar energy reflected from the surface or thermal energy emitted by the surface. Active systems can achieve higher resolution.
Satellite resolution considers four things: spatial, spectral, radiometric, and temporal resolution.
Electromagnetic radiation and the atmosphere control many aspects of a remote sensing system.
Satellite orbits determine many characteristics of the imagery, what the satellite sees, and how often it revisits an area.
The signal to noise ratio is important for the design of remote sensing systems.
Satellite band tradeoffs.
Interpreting satellite reflectance patterns and images uses various statistical measures to assess surface properties in the image.
The colors used on the display are gray shading for single bands, and RGB for multi-band composites. We can also perform image merge and sharpening to combine the advantages of both panchromatic (higher spatial resolution) and color imagery (better differentiation of surface materials).
Keys for image analysis
Hyperspectral imagery
Spectral reflectance library--different materials reflect radiation differently
Digital Elevation Model (DEM) is the digital representation of the land surface elevation with respect to any reference datum. DEM is frequently used to refer to any digital representation of a topographic surface. DEM is the simplest form of digital representation of topography. GIS applications depend mainly on DEMs, today.
With increasing use of remote sensing, the need for crispier, accurate and enhanced precision has deemed to the improvement in the spectral and spatial resolution of remotely sensed imagery. For most of the systems, panchromatic images typically have higher resolution, while multispectral images offer information in several spectral channels. Resolution merge (also called pan-sharpening) allows us to combine advantages of both kinds of images by merging them into one.
The resolution merge or pan sharpening is the technique used to obtain high resolution multi-spectral images. The color information is collected from the coarse resolution satellite data and the intensity from the high resolution satellite data.
The main constraint is to preserve the spectral information for aspects like land use. Saving theimage from distortion of the spectral characteristics is important in the merged dataset.
The most common techniques for spatial enhancement of low-resolution imagery combining high and low resolution data can be used are: Intensity-Hue-Saturation, Principal Component, Multiplicative and Brovey Transform.
THIS PRESENTATION IS TO HELP YOU PERFORM THE TASK STEP BY STEP.
Digitization Basics for Archives and Special Collections – Part 1: Select and...WiLS
Josh Hickman, Digital Resources Librarian, Beloit College
This is the first part of a two-part, full-day workshop introducing the core elements of creating digital collections of historic photographs, documents and other archival materials. Part 1 focuses on selecting materials to digitize and the basics of reformatting. We’ll start with some recommendations for planning a successful project and consider how your digital collections can fit into the statewide and national landscape of digital content. We’ll discuss copyright concerns in order to help you answer the question “CAN I put this online?” And we’ll explore the vocabulary of digital images, including pixels, resolution and bit depth as well as tools and best practices for scanning photographs and documents.
Its related to LIGHTS' DST Sponsored training programme at NBSS&LUP.
The magazine is published from LIGHTS, a Delhi based NGO.
This file contains the cover pages, my photo on the back of cover page, the story about the mentioned training, and the back page
Participatory rural appraisal of karab village , mathuraNirmal Kumar
This presentation explains a case study for participatory rural appraisal (Karab village of Mathura, Uttar Pradesh)
The study was done during Field Experience Training in NAARM
this presentation deals with Molecular Ph(f)arming, and bio-safety issues related to it. This was presented by me in credit seminar in the division of Agricultural physics, IARI, New Delhi.
the sources used are duly acknowledged in the figures and slides.
The Indian economy is classified into different sectors to simplify the analysis and understanding of economic activities. For Class 10, it's essential to grasp the sectors of the Indian economy, understand their characteristics, and recognize their importance. This guide will provide detailed notes on the Sectors of the Indian Economy Class 10, using specific long-tail keywords to enhance comprehension.
For more information, visit-www.vavaclasses.com
Unit 8 - Information and Communication Technology (Paper I).pdfThiyagu K
This slides describes the basic concepts of ICT, basics of Email, Emerging Technology and Digital Initiatives in Education. This presentations aligns with the UGC Paper I syllabus.
Synthetic Fiber Construction in lab .pptxPavel ( NSTU)
Synthetic fiber production is a fascinating and complex field that blends chemistry, engineering, and environmental science. By understanding these aspects, students can gain a comprehensive view of synthetic fiber production, its impact on society and the environment, and the potential for future innovations. Synthetic fibers play a crucial role in modern society, impacting various aspects of daily life, industry, and the environment. ynthetic fibers are integral to modern life, offering a range of benefits from cost-effectiveness and versatility to innovative applications and performance characteristics. While they pose environmental challenges, ongoing research and development aim to create more sustainable and eco-friendly alternatives. Understanding the importance of synthetic fibers helps in appreciating their role in the economy, industry, and daily life, while also emphasizing the need for sustainable practices and innovation.
Model Attribute Check Company Auto PropertyCeline George
In Odoo, the multi-company feature allows you to manage multiple companies within a single Odoo database instance. Each company can have its own configurations while still sharing common resources such as products, customers, and suppliers.
Operation “Blue Star” is the only event in the history of Independent India where the state went into war with its own people. Even after about 40 years it is not clear if it was culmination of states anger over people of the region, a political game of power or start of dictatorial chapter in the democratic setup.
The people of Punjab felt alienated from main stream due to denial of their just demands during a long democratic struggle since independence. As it happen all over the word, it led to militant struggle with great loss of lives of military, police and civilian personnel. Killing of Indira Gandhi and massacre of innocent Sikhs in Delhi and other India cities was also associated with this movement.
Palestine last event orientationfvgnh .pptxRaedMohamed3
An EFL lesson about the current events in Palestine. It is intended to be for intermediate students who wish to increase their listening skills through a short lesson in power point.
This is a presentation by Dada Robert in a Your Skill Boost masterclass organised by the Excellence Foundation for South Sudan (EFSS) on Saturday, the 25th and Sunday, the 26th of May 2024.
He discussed the concept of quality improvement, emphasizing its applicability to various aspects of life, including personal, project, and program improvements. He defined quality as doing the right thing at the right time in the right way to achieve the best possible results and discussed the concept of the "gap" between what we know and what we do, and how this gap represents the areas we need to improve. He explained the scientific approach to quality improvement, which involves systematic performance analysis, testing and learning, and implementing change ideas. He also highlighted the importance of client focus and a team approach to quality improvement.
Read| The latest issue of The Challenger is here! We are thrilled to announce that our school paper has qualified for the NATIONAL SCHOOLS PRESS CONFERENCE (NSPC) 2024. Thank you for your unwavering support and trust. Dive into the stories that made us stand out!
How to Split Bills in the Odoo 17 POS ModuleCeline George
Bills have a main role in point of sale procedure. It will help to track sales, handling payments and giving receipts to customers. Bill splitting also has an important role in POS. For example, If some friends come together for dinner and if they want to divide the bill then it is possible by POS bill splitting. This slide will show how to split bills in odoo 17 POS.
1. DIP & GIS Software Systems: An overview
Nirmal Kumar
2. Two types of data:
•Analog: e.g., topo sheet, aerial photo
•Digital: e.g., satellite data
Requires DIP Systems:
•Computer hardware
•Image processing software
Elements of visual image
interpretation & optical instruments
such as stereoscopes
3. Digital Image Processing System
Considerations
Hardware Software
• CPU • OS
• RAM Expert
• Software Compiler
• Display • Image Processing
• Storage Software
• Network
4. CPU: Confused??
Processor Architecture: 32/64 bit
• This basically means that the
processor can process internally
either 32 bits or 64 bits of data at any
one time.
Processor Clock Speed :
• Dictates how fast the processor can process the data
(0's and 1's).
• If a processor is having a speed of 2GHz, this means
that it can process data internally 2 billion times a
second (every clock cycle).
•If the processor is a 32-bit processor
running at 2GHz then it
can potentially process 32 bits of data
simultaneously, 2 billion times a second !!
5. CPU:
Front Side Bus (FSB):
• The front side bus transfers data between the processor and the
computer's other components such as memory, hard drives, etc.
• The FSB will have a certain width (measured in bits) which dictates how
many bits can be transferred at any one time.
• The FSB also has a clock cycle frequency indicating how fast the data can
be transferred.
• For example a processor having a FSB width of 32-bits and
running at 533MHz, can transfer a set of 32-bits of data,
533,000,000 times a second.
Instruction Sets:
• The type of work a processor carries out is defined by its instructions. All modern
processors have their own instructions built-in for common tasks.
CISC (Complex Instruction Set Computer): PCs
• More internal instructions, allowing a more diverse set of operations.
• Generally slower due to the complexity of the instructions.
RISC (Reduced Instruction Set Computer): Work stations
• Fewer built-in instructions
• Add to the overall speed of the processor due to the simplicity of the instructions
6. Memory:
When the processor needs to execute an instruction, it looks first
in its own data registers. If the needed data isn't there, it goes to
the L1 cache (SRAM) and then to the L2 cache (DRAM). If the
data isn't in any cache, the CPU calls out to the main RAM. It
might not even be there, in which case the system has to retrieve
it from the disk.
e.g.,
•All Intel Core i7 processors feature L1, L2, and shared L3 caches.
•Before, Intel Core 2 Duo and Quad processors had just an L1 and L2 cache.
Processor Clock Speed (GHz) Cores L1 L2 L3
Core i7-990X 3.47 6 384KB 1.5 MB 12 MB
Core i7-975 3.33 4 256 KB 1 MB 8 MB
7. Storage:
SPOT 3 HRV XS
3000rows × 3000columns × 3bands
multispectral = 27 Mb
60x60 km scene 1000000
3 bands
8 bit
20x20 m resolution
5666rows × 6166columns × 7bands
Landsat ETM+ = 244 Mb
1000000
185x170 km scene
7 bands
8 bit
30x30 m resolution
9. Display:
Resolution:
•Most monitors today are capable of changing their displayed resolution
under software control
•Maximum resolution that a monitor can display is limited by the size of
the monitor and the characteristics of the CRT (cathode-ray tube)
14" 15" 17" 19" 21"
640x480 BEST GOOD TOO BIG HUGE TERRIBLE
800x600 GOOD BEST GOOD TOO BIG HUGE
TOO
1024x768 GOOD BEST GOOD STILL GOOD
SMALL
1280x1024 TINY TOO SMALL GOOD BEST GOOD
1600x1200 TERRIBLE TINY TOO SMALL GOOD BEST
BIT DEPTH COLOR RESOLUTION
Colour: 1-bit 2 colors
2-bit 4 colors
•4 standard color depths used by monitors: 4-bit 3-bit 8 colors
(Standard VGA), 8-bit (256-Color Mode), 16-bit 4-bit 16 colors
(High Color),and 24-bit (True Color). 5-bit 32 colors
6-bit 64 colors
7-bit 128 colors
8-bit 256 colors
16-bit 65,536 colors
24-bit 16,777,215 colors
12. Operating System:
• Single user OS: e.g., MS Window XP (HE), Macintosh OS
• Network OS: e.g., Microsoft Windows Server 2003, Microsoft Windows Server
2008, UNIX, Linux, Mac OS X, and Novell NetWare.
Compiler:
A computer software compiler translates instructions programmed in a high level
language such as C++ or visual basics in to machine language that the CPU can
understand.
Many DIP softwares provide a toolkit that programmers can use to compile their own
DIP algorithms. e.g., ERDAS, ER Mapper, ENVI
17. Information Extraction
• Univariate and multivariate statistical analysis
• Supervised classification (Minimum distance, Maximum likelyhood,
Mahalanobis, Parallelepiped, Spectral angle Mapper, Spectral
Information Divergence)
• Decision tree, regression tree, Binary encoding, Support Vector
Machine, Neural network, Fuzzy logic classification
• Unsupervised classification
• Contextual classification
• Incorporation of ancillary data during classification
• Radar image processing
• Hyper-spectral data analysis
• LIDAR data analysis
• Subpixel classification
18. Important Image Processing Functions:
Photogrammetric Information extraction
• Soft copy photogrammetry to extract digital elevation models
• Soft copy photogramemtry to extract orthophotographs
• Soft copy extraction of polarimetric details
Geographic Information Systems (GIS)
• Raster (image) based GIS
• Vector (polygon) based GIS (must allow polygon comparison)
Integrated Image Processing and GIS
• Complete Image Processing Systems
• Complete Image Processing Systems and GIS
Utilities
• Network (Internet, local talk, etc.)
• Image compression
• Import and export of various file formats
19. Software, HQ special strength
ERDAS (Atlanta, USA: 1979) – vector integration
PCI (Toronto, Canada: 1982) – orthophotos / breadth
ENVI (Boulder, USA: 1991) – hyperspectral
ER Mapper (Perth, Australia:) - image web server
…. now part of ERDAS (2007)
TNTMips (USA) - Digitization
Definiens Developer (Trimble, Germany) – Object based classification
20. Open Source DIP & GIS Softwares:
ILWIS - Remote Sensing and GIS software
Integrated Land and Water Information System (ILWIS)
Key features
• Integrated raster and vector design
• Import and export of widely used data formats
• On-screen and tablet digitizing
• Comprehensive set of image processing tools
• Orthophoto, image georeferencing, transformation and mosaicing
• Advanced modeling and spatial data analysis
• 3D visualization with interactive editing for optimal view findings
• Rich projection and coordinate system library
• Geo-statisitical analyses, with Kriging for improved interpolation
• Production and visualization of stereo image pairs
• Spatial Multiple Criteria Evaluation
• Set of operations on DEMs/DTMs and hydrological processing
• Variable Threshold Computation, to help preparing a threshold map
for drainage network extraction
• Horton Statistics,to calculate the number of streams, the average stream
length, the average area of catchments for Strahler stream orders
• Georeference editors
21. Open Source DIP & GIS Softwares:
Geographic Resources Analysis Support System
• Commonly referred to as GRASS, this is a free Geographic
Information System (GIS) used for geospatial data management
and analysis, image processing, graphics/maps production, spatial
modeling, and visualization.
• GRASS contains over 350 programs and tools
• GRASS uses both an intuitive windows interface as well as
command line syntax for ease of operations.
• GRASS is currently used in academic and commercial settings
around the world, as well as by many governmental agencies and
environmental consulting companies.
• Quantum GIS (QGIS) is a Geographic Information System (GIS) built for Linux/Unix.
• QGIS supports vector, raster, and database formats.
• MapServer is an OpenSource development environment for constructing spatially
enabled Internet-web applications.
22. Open Source DIP & GIS Softwares:
• Coded in the widespread
and powerful C++
programming language
• Object oriented system
design
• Run on MS-Windows as well
as with Linux.
• > 300 modules for Vector &
Raster processing.
• Powerful Geostatistical
module.
• Digital terrain analysis
• LIDAR data analysis
• GUI & Scripting in
Command Line Interpreter
23. Matlab Programming:
• Image Processing Toolbox™ provides a comprehensive set of reference-
standard algorithms and graphical tools for image processing, analysis,
visualization, and algorithm development.
• You can perform image enhancement, image deblurring, feature
detection, noise reduction, image segmentation, spatial transformations,
and image registration.
• Many functions in the toolbox are multithreaded to take advantage of
multicore and multiprocessor computers.
Diffs = zeros(rmax, cmax-1);
for row = 1:rmax;
for col = 1:cmax-1;
Diffs(row, col) = Image(row, col+1) - Image(row, col);
end
end
imshow(Diffs, []);