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This paper proposes an efficient zero-block inter mode decision algorithm for high bit-rate coding in H.264/AVC, to improve computation efficiency of the previous algorithm [1]. In the proposed algorithm we suggest using zero-blocks of both 8×8 and 4×4 DCT coefficients to describe video sequences in detail, including global and local stationary characteristics. The experimental results reveal that...
The delivery of High Definition Television (HDTV) over IP networks, namely the HD IPTV, has emerged as one of the major distribution and access techniques for broadband multimedia services. IPTV adopts H.264/AVC as its coding standard due to its high video compression efficiency as well as powerful error resilience features. This paper presents studies on some of these features applied to HD IPTV...
In this paper, a two-stage buffer control algorithm for minimizing the fluctuation in the quality of the video compressed by the motion JPEG2000 (MJP2) coder is proposed. In the first stage, coding bits are allocated to the video frames that are coded with the constraint of the smoothed distortion. In the second stage, the overall coding bits allocated in the first stage are adjusted to not exceed...
In this paper, a new multiple description coding (MDC) method for color images is presented. The proposed approach bases on the set partitioning in hierarchical trees (SPIHT) algorithm to achieve a high image compression ratio; employs poly-phase sampling technique to generate multiple descriptions to adapt to varying Internet environments. It results in having capabilities to conquer packet losses...
This paper presents a rate-distortion based selective decoding for pixel-domain distributed video compression (DVC) system. In the proposed system, the Wyner-Ziv frames are divided into several sub-images. Each of these sub-images is encoded and decoded independently. At the decoder, the rate-distortion ratio is estimated for each bitplane of the sub-images. Only the bitplanes with high rate-distortion...
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