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Video object model and segmentation for content-based video indexing

Object segmentation and tracking is a key component for new generation of digital video representation, transmission and manipulations. Example applications include content based video database and video editing. We present a general schema for video object modeling, which incorporates low level visual features and hierarchical grouping. The schema provides a general framework for video object extraction, indexing, and classification. In addition, we present new video segmentation and tracking algorithms based on salient color and affine motion features. Color feature is used for intra frame segmentation; affine motion is used for tracking image segments over time. Experimental evaluation results using several test video streams are included.