An Arbitrary Inverse Quantized Transforms with Dynamic Color Space for H.264 and MPEG-4

• Main Authors: Chun-Ying Lin, 林君穎
• Other Authors: Chi-Chia Sun
• Format: Others
• Language: en_US
• Published: 2014
• Online Access: http://ndltd.ncl.edu.tw/handle/vuj4gd

碩士 === 國立虎尾科技大學 === 電機工程研究所 === 102 === In this thesis, the 2-D Inverse Quantized Discrete Cosine and Integer Transform(IQDCI T) based on the human visual experience is proposed for image/video decoding process in compatibility with the standard MPEG-4 Visual and the standard H.264/AVC. The luminance signals and the chrominance signals can be processed by different IQDCIT configurations to balance the video transformation quality and the power consumption. The implementations are embedded in publicly available software XVID Codes 1.2.2 for the standard MPEG-4 Visual and the H.264/AVC reference software JM 16.1, where the experimental results show the different video compression quality in PSNR between separate luminance signals and chrominance signals or not. From the results, we can see when the luminance signals are decompressed by the higher accuracy configuration. The chrominance signals are not impact to the overall compression quality, so we can use a low-power conversion configuration to reduce the power consumption of the decompression.