公开(公告)号：US20070171978A1

公开(公告)日：2007-07-26

申请号：US11569094

申请日：2005-12-15

申请人： Keiichi CHONO

发明人： Keiichi CHONO

IPC分类号： H04N11/04

CPC分类号： H04N19/48 ,  H04N19/11 ,  H04N19/122 ,  H04N19/147 ,  H04N19/157 ,  H04N19/176 ,  H04N19/19 ,  H04N19/593 ,  H04N19/61

摘要： An object to be attained by the present invention is to provide an image encoding technology for reducing the number of transform operations required in SATD calculation in intra-frame predictive direction estimation using a method involving no image quality degeneration. An image encoding apparatus of the present invention transforms an input pixel block having N×M pixels into N×M transform coefficients; locally transforms an intra-frame predicted pixel block having N×M pixels based on the property of intra-frame prediction; and detects the best intra-frame predictive direction by comparing transform coefficients of the transformed input pixel block with transform coefficients of an intra-frame predicted pixel block in each intra-frame predictive direction.

摘要翻译： 本发明要实现的目的是提供一种图像编码技术，其使用不涉及图像质量退化的方法来减少帧内预测方向估计中的SATD计算所需的变换操作的数量。 本发明的图像编码装置将具有N×M个像素的输入像素块变换为N×M个变换系数; 基于帧内预测的属性，本地变换具有N×M个像素的帧内预测像素块; 并且通过将变换后的输入像素块的变换系数与帧内预测像素块的变换系数进行比较，来检测最佳的帧内预测方向。

公开(公告)号：US20200322615A1

公开(公告)日：2020-10-08

申请号：US16910288

申请日：2020-06-24

申请人： Keiichi CHONO ,  Yuzo SENDA ,  Junji TAJIME ,  Hirofumi AOKI ,  Kenta SENZAKI

发明人： Keiichi CHONO ,  Yuzo SENDA ,  Junji TAJIME ,  Hirofumi AOKI ,  Kenta SENZAKI

IPC分类号： H04N19/156 ,  H04N19/503 ,  H04N19/176 ,  H04N19/46 ,  H04N19/61 ,  H04N19/593 ,  H04N19/12 ,  H04N19/172 ,  H04N19/184

摘要： A video decoding device and method, including extracting PCM block size information including a threshold, from a bitstream, determining the threshold based on the extracted PCM block size information; parsing a PCM header from the bitstream with respect to an encoded block, only when said encoded block is prediction mode of intra prediction and a block size of said encoded block is equal to or greater than the determined threshold, controlling an entropy decoding process and a PCM decoding process based on the parsed PCM header; parsing transformed data of a prediction error data of an image in the bitstream; and PCM-decoding PCM data of the image in the bitstream, wherein the decoding performs the decoding operation based on the prediction mode being intra prediction and based on the block size of the encoded block being equal to or greater than the determined threshold.

公开(公告)号：US20160249055A1

公开(公告)日：2016-08-25

申请号：US15146005

申请日：2016-05-04

申请人： Keiichi CHONO ,  Yuzo SENDA ,  Junji TAJIME ,  Hirofumi AOKI ,  Kenta SENZAKI

发明人： Keiichi CHONO ,  Yuzo SENDA ,  Junji TAJIME ,  Hirofumi AOKI ,  Kenta SENZAKI

IPC分类号： H04N19/156 ,  H04N19/172 ,  H04N19/46 ,  H04N19/503 ,  H04N19/184 ,  H04N19/176

摘要： A video encoding device includes: transform means 11 for transforming an image block; entropy encoding means 12 for entropy-encoding transformed data of the image block transformed by the transform means 11; PCM encoding means 13 for PCM-encoding the image block; multiplex data selection means 14 for selecting output data of the entropy encoding means 12 or the PCM encoding means 13, in a block of a block size set from the outside; and multiplexing means 15 for embedding a PCM header in a bitstream, in the block of the set from the outside block size.