FLOCK-OF-BIRD ALGORITHM FOR FAST MOTION BASED OBJECT TRACKING AND TRANSCODING IN VIDEO STREAMING
Javed Khan, Guo Zhong · 2003
Object based bit allocation enables video coding with high perceptual quality at significantly reduced bit-rate. In this paper, we describe a fast content aware video transcoding technique particularly designed for streaming video. The algorithm can accept an initial high-level description of the expected video objects. The proposed flock-or-bird algorithm then detects and tracks these target scene objects in real time. It uses macro-blocks group property for detection of video objects. Based on these moving objects it dynamically reencodes a regular coded video stream into a perceptually coded video stream at a significantly reduced bit-rate. In this paper, we share the performance of its MPEG-2 compliant implementation.