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Low-delay and error-resilience video coding are critical for real-time video communication over wireless networks. Intra-refresh coding, which embeds intra-coded regions into inter frames can achieve a relatively smooth bit-rate and terminate the error propagation caused by the transmission loss. In this paper, we proposed a novel linear model for the intra-refresh cycle size selection adapting to...
To reduce the complexity of searching for wedge-based geometry partitions in video coding, we propose a texture-difference based partition line selection approach with a skipping strategy. Applying this approach can reduce the encoding time by 90% while retaining the similar rate-distortion performance to that of exhaustive searching. We also propose a background-compensated prediction scheme to improve...
In this paper, a texture-space geometry partitioning approach is proposed to reduce the computational complexity of searching for geometry partitions for video coding. Additionally, for systems that capture both video and depth data, an enhanced geometry partitioning approach using both texture and depth information is proposed to further improve the partitioning accuracy and reduce the search complexity...
In this letter, a rate estimation technique using transform coefficient variance is proposed in the rate-distortion cost function for intra mode decision. The new cost function achieves better coding performance than the cost function using the ??-domain model. The new cost function brings out an average speed-up factor of 13 when compared with the rate-distortion optimization (RDO) mode decision,...
We propose a new error concealment method based on hallucination for Scalable Video Coding with spatial scalability. In this method, parts of the frames which lose the enhancement layer are up-sampled from base layer and ldquohallucinatedrdquo as concealment frames. The database for hallucination is generated from the high-resolution and low-resolution frame-pairs near the lost frames in the video...
In this paper, a rate estimation technique using the transform coefficient variance is proposed in the rate-distortion cost function for intra mode decision. The experiment shows that the rate estimation using the absolute transform coefficient variance can predict rates more accurate than the one using rho-domain model. The new cost function brings out an average speed-up factor of 13.8 when compared...
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