2021年12月9日 · 重叠块运动补偿（Overlapped Block Motion Compensation，OBMC）技术是在当前块运动补偿完成之后，将使用相邻块的运动信息进行运动补偿得到的块与当前预测块进行加权，主要用于修正CU的边界像素，可以降低方块效应。 不应用OBMC的条件如下所示： 对于基于子块的编码工具，提出使用子块OBMC，以使用相邻子块的运动信息将相同的加权融合应用于顶部、左侧、底部和右侧子块边界像素。 基于子块的双边匹配。 1. OBMC计算. 主要包括以下两种 …

2018年1月3日 · 重叠块运动补偿（Overlapped Block Motion Compensation，OBMC）技术是在当前块运动补偿完成之后，将使用相邻块的运动信息进行运动补偿得到的块与当前预测块进行加权，主要用于修正CU的边界像素，可以降低方块效应。

The optimization of the OBMC algorithm is based on limiting the blocks where OBMC prediction is considered. The OBMC levels are controlled by the pic_obmc_mode flag. Table 1 below provides a description of the quality-complexity tradeoffs in the algorithm.

VVC中为了提高预测的准确率增加了很多工具，其中一个CU可以同时使用CIIP、OBMC、LMCS等工具。本文来自JVET-X0090《On combination of CIIP, OBMC and LMCS》，该提案提出了这三种工具不同的协同方法，并进行实验验证。

the OBMC flag when a CU is coded with merge mode, the OBMC flag is copied from neighboring blocks, in a way similar to motion information copy in merge mode. Otherwise, when a CU is not coded...

Abstract Overlapped block motion compensation (OBMC) is an inter prediction tool that improves coding performance by blending reference samples of the current and neighboring block across the block boundaries.

In this study, interpolation filters and applicable conditions of OBMC depending on block sizes are proposed to achieve the best trade-off. The experimental results show a -0.40% BD-rate gain compared with that of the VVC test model 3 for random access conditions under the common test condition in JVET.

2014年5月1日 · usage: ffmpeg [options] [ [infile options] -i infile]... { [outfile options] outfile}... See man ffmpeg for detailed description of the options. -target type specify target file type ("vcd", "svcd", "dvd", "dv", "dv50", "pal-vcd", "ntsc-svcd", ...) -timecode hh:mm:ss [:;.]ff set initial TimeCode value. -ab <int> E...

The image decoding method performed by a decoding device, according to the present invention, comprises the steps of: deriving, from a bitstream, transform coefficients for a current block;...

2024年9月12日 · Overlapped block motion compensation (OBMC) may be performed for a current video block based on motion information associated with the current video block and motion information associated with one or more neighboring blocks of the current video block.