Title :
Adaptive appearance compensated view synthesis prediction for Multiview Video Coding
Author :
Shimizu, Shinya ; Kimata, Hideaki ; Ohtani, Yoshimitsu
Author_Institution :
Cyber Space Labs., NTT Corp., Yokosuka, Japan
Abstract :
View synthesis prediction has been studied to achieve efficient inter-view prediction. Existing view synthesis prediction methods synthesize predicted pictures by using decoded pictures from the other views and geometric information of the scene. However, these conventional methods have no ability to compensate the inter-view difference in image signals caused by individual camera characteristics and the nonLambert reflection of objects. This paper proposes adaptive appearance compensated view synthesis prediction; it uses adaptive filters to compensate not only the differences in color and brightness but also the differences in the spatial frequency of images. The object-dependent local differences are also compensated efficiently by estimating the optimal compensation parameters block by block at the decoder. Experiments show that the proposed method reduces the bitrate by up to 40% relative to H.264/AVC multiview video coding, and 26% relative to the conventional view synthesis prediction.
Keywords :
adaptive filters; image colour analysis; motion compensation; video coding; H.264/AVC multiview video coding; adaptive appearance compensated view synthesis prediction; adaptive filters; brightness; camera characteristics; color; decoded pictures; image signals; nonLambert object reflection; object-dependent local differences; optimal compensation parameters; predicted pictures; spatial frequency; Adaptive filters; Brightness; Cameras; Decoding; Frequency synthesizers; Layout; Prediction methods; Reflection; Signal synthesis; Video coding; Adaptive filter; Depth map; Multiview video coding; View synthesis prediction;
Conference_Titel :
Image Processing (ICIP), 2009 16th IEEE International Conference on
Conference_Location :
Cairo
Print_ISBN :
978-1-4244-5653-6
Electronic_ISBN :
1522-4880
DOI :
10.1109/ICIP.2009.5413619