A Computational Approach to Edge Detection
IEEE Transactions on Pattern Analysis and Machine Intelligence
Subtopic structuring for full-length document access
SIGIR '93 Proceedings of the 16th annual international ACM SIGIR conference on Research and development in information retrieval
Relevance score normalization for metasearch
Proceedings of the tenth international conference on Information and knowledge management
Introduction to MPEG-7: Multimedia Content Description Interface
Introduction to MPEG-7: Multimedia Content Description Interface
Minimal-impact audio-based personal archives
Proceedings of the the 1st ACM workshop on Continuous archival and retrieval of personal experiences
Passive capture and ensuing issues for a personal lifetime store
Proceedings of the the 1st ACM workshop on Continuous archival and retrieval of personal experiences
Proceedings of the the 1st ACM workshop on Continuous archival and retrieval of personal experiences
Practical experience recording and indexing of Life Log video
CARPE '05 Proceedings of the 2nd ACM workshop on Continuous archival and retrieval of personal experiences
An examination of the effects of a wearable display on informal face-to-face communication
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
VFerret: content-based similarity search tool for continuous archived video
Proceedings of the 3rd ACM workshop on Continuous archival and retrival of personal experences
Novel concept for video retrieval in life log application
PCM'04 Proceedings of the 5th Pacific Rim Conference on Advances in Multimedia Information Processing - Volume Part II
SenseCam: a retrospective memory aid
UbiComp'06 Proceedings of the 8th international conference on Ubiquitous Computing
Lifelogging memory appliance for people with episodic memory impairment
UbiComp '08 Proceedings of the 10th international conference on Ubiquitous computing
An examination of a large visual lifelog
AIRS'08 Proceedings of the 4th Asia information retrieval conference on Information retrieval technology
Combining wearable sensors for location-free monitoring of gait in older people
Journal of Ambient Intelligence and Smart Environments
Visualising the past: annotating a life with linked open data
Proceedings of the 3rd International Web Science Conference
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A personal lifelog of visual and audio information can be very helpful as a human memory augmentation tool. The SenseCam, a passive wearable camera, used in conjunction with an iRiver MP3 audio recorder, will capture over 20,000 images and 100 hours of audio per week. If used constantly, very soon this would build up to a substantial collection of personal data. To gain real value from this collection it is important to automatically segment the data into meaningful units or activities. This paper investigates the optimal combination of data sources to segment personal data into such activities. 5 data sources were logged and processed to segment a collection of personal data, namely: image processing on captured SenseCam images; audio processing on captured iRiver audio data; and processing of the temperature, white light level, and accelerometer sensors onboard the SenseCam device. The results indicate that a combination of the image, light and accelerometer sensor data segments our collection of personal data better than a combination of all 5 data sources. The accelerometer sensor is good for detecting when the user moves to a new location, while the image and light sensors are good for detecting changes in wearer activity within the same location, as well as detecting when the wearer socially interacts with others.