A Variable Quantization Coefficient Scanning for Macroblock Considering the Histogram Value of Previous Macroblock's Quantization Coefficient
이전 매크로블록의 양자화계수 누적값을 이용한 매크로블록 마다 가변적인 양자화계수 탐색방법

Myung-Han Hyun
2011 Journal of the Korea Institute of Military Science and Technology  
In this paper, a variable quantization coefficient scanning for macroblock considering the histogram value of previous macroblock's quantization coefficient is proposed. In order to scan a quantization coefficient, the proposed method makes 4×4 histograms for various prediction modes(16×16, 16×8, 8×16, 8×8) by adding 1 if the value of quantization coefficient is not 0. After a final mode decision procedure, the 4×4 histogram of the final mode will be sorted. Then, quantization coefficients in
more » ... rresponding macroblock of the next frame are scanned using the sorted order. The experimental results show that the proposed scheme reduces the total bits by approximately 0.01 ~2.25% with similar PSNR performance compared with the previous method.
doi:10.9766/kimst.2011.14.2.281 fatcat:xm6e2ssnnjcm7oszgpsmplvyv4