The document discusses methods for matching and sharing lifelog events between different users. It describes segmenting a user's day into multiple events captured through a SenseCam. These event segments can then be compared between users to find matching events that were attended by both users based on visual similarity scores of the images. The goal is to develop a model for connecting different user's lifelog collections by identifying shared experiences between them.

1. Sharing Lifelog Experiences ODCSSS 2008 Paula Meehan DCU Prof. Noel O Connor, Daragh Byrne

2. Contents Introduction Background Research Event Segmentation Matching Events (1) Matching Events (2) Progress Model

3. Introduction What is a Lifelog? Connecting different user’s Lifelog Collections.

4. Background Research CDVP (Centre for Digital Video Processing) Event Segmentation Content and Context in Multimedia Semantics MPEG feature extraction

5. Event Segmentation A day’s SenseCam images (3,000 – 4,000) Multiple Events Finishing work in the lab At the bus stop Chatting at Skylon Hotel lobby Moving to a room Tea time On the way back home Event Segmentation A day’s SenseCam images (3,000 – 4,000) Multiple Events Finishing work in the lab At the bus stop Chatting at Skylon Hotel lobby Moving to a room Tea time On the way back home Event Segmentation Share Events

6. Event-Segmented image sets User 1 User 2 Compare Event-Event similarity between Users Event’s attended by both Users Matching Events (1) ... : Similarity matrix

7. User 2 User 1 Matching Events (2) Similarity Score : Scalable Colour Colour Structure Colour Layout Colour Moments Edge Histogram Homogeneous Texture Extract MPEG-7 descriptors for this image Scalable Colour Colour Structure Colour Layout Colour Moments Edge Histogram Homogeneous Texture Extract MPEG-7 descriptors for this image :

8. Progress Presently Parsing ‘sensor.txt’ and ‘image.xml’ files Future Work Plot data and compare Extract MPEG-7 Descriptor features of images Match Events of Users Solution for timestamps of events which aren’t synchronised

9. Model My Events User 1’s Events My Shared Event User 1’s Shared Event Shared Event

10. Thank you