Adaptive selection model for detecting zero-quantized discrete cosine transform coefficients in video coding

Bo Jhih Chen, Shen-Chuan Tai, Yung Gi Wu

研究成果: Article同行評審

摘要

An adaptive selection approach for advanced video coding that reduces the number of unnecessary discrete cosine transform (DCT), quantization (Q), inverse quantization (IQ), and inverse DCT (IDCT) computations is proposed. An adaptive selection approach is used to detect zero-quantized DCT (ZQDCT) coefficients since certain zero-quantized DCT coefficients of the prediction residual block are difficult to identify. The presented algorithm detects ZQDCT coefficients according to the corresponding frequency positions before implementing DCT. Therefore, redundant DCT, Q, IQ, and IDCT procedures are removed. To carry out the proposed algorithm, three sufficient conditions are assumed for deriving eight prediction modes, which are employed to select various types of DCT, Q, IQ, and IDCT implementations. The computed results indicate that the proposed algorithm is capable of reducing the number of DCT, Q, IQ, and IDCT computations compared to those required by related methods, while retaining the coding performance of the original encoder.

原文English
文章編號047404
期刊Optical Engineering
51
發行號4
DOIs
出版狀態Published - 2012 四月 1

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics
  • Engineering(all)

指紋 深入研究「Adaptive selection model for detecting zero-quantized discrete cosine transform coefficients in video coding」主題。共同形成了獨特的指紋。

引用此