Visual Attention-based Small Screen Adaptation for H.264 Videos

visual attention;video adaptation;H.264;Electrical and Computer Engineering

Mukherjee, Abir

University of Waterloo

关键词: visual attention;    video adaptation;    H.264;    Electrical and Computer Engineering;   

Others  :  https://uwspace.uwaterloo.ca/bitstream/10012/3929/1/A.Mukherjee_MASc_Thesis.pdf

瑞士|英语

来源: UWSPACE Waterloo Institutional Repository

【 摘 要 】

We develop a framework that uses visual attention analysis combined with temporalcoherence to detect the attended region from a H.264 video bitstream, and display it ona small screen. A visual attention module based upon Walther and Koch;;s model gives usthe attended region in I-frames. We propose a temporal coherence matching framework thatuses the motion information in P-frames to extend the attended region over the H.264video sequence. Evaluations show encouraging results with over 80% successful detection rate for objects of interest, and 85% respondents claiming satisfactory output.