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公开(公告)号：US20060165163A1
公开(公告)日：2006-07-27
申请号：US10547324
申请日：2004-02-25
CPC分类号： H04N19/124 , H04N19/136 , H04N19/17 , H04N19/51 , H04N19/96
摘要： The invention relates to a video encoder (201) for encoding a video signal. The video encoder comprises a segmentation processor (207) which divides the picture into picture regions. Preferably, picture regions having a high degree of flatness or uniformity are determined in this way. A characteristics processor (209) determine a spatial frequency characteristic for each picture region, and a coding controller (211) selects an encoding block size, such as a prediction block size for motion estimation, in response to the spatial frequency characteristic. An encode processor (213) encodes the picture using the selected encoding block size. Specifically, increasing block sizes are selected for increasing degrees of uniformity or flatness indicated by the spatial frequency characteristic. Thereby, an increasing proportion of high frequency components and a consistent choice of encoding block sizes are maintained, and thus the coding artefacts from many encoders having variable prediction block sizes is reduced. The invention is particularly suitable for H.264 and similar encoders.
摘要翻译： 本发明涉及用于对视频信号进行编码的视频编码器（201）。 视频编码器包括将图像划分成图像区域的分割处理器（207）。 优选地，以这种方式确定具有高度平坦度或均匀性的图像区域。 特征处理器（209）确定每个图像区域的空间频率特性，并且编码控制器（211）响应于空间频率特性来选择诸如用于运动估计的预测块大小的编码块大小。 编码处理器（213）使用所选择的编码块大小来对图像进行编码。 具体地，增加块尺寸被选择以增加由空间频率特性指示的均匀度或平坦度。 因此，保持了高频分量的不断增加的比例和编码块大小的一致选择，因此减少了具有可变预测块大小的许多编码器的编码伪影。 本发明特别适用于H.264和类似的编码器。
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公开(公告)号：US20060104357A1
公开(公告)日：2006-05-18
申请号：US10542836
申请日：2004-01-19
CPC分类号： H04N19/577 , H04N19/46 , H04N19/573 , H04N19/61 , H04N19/70 , H04N19/82
摘要： Coding of a video signal is provided according to a predefined standard, wherein in a given operation mode some of the tools provided by the predefined standard are disabled, and wherein an identification of the disabled tools is included in the bit-stream, the disabled tools being one or more out of the group of: bidirectional predictive coding of pictures or picture parts, use of a de-blocking filter, use of more than one reference picture.
摘要翻译： 根据预定义的标准提供视频信号的编码，其中在给定的操作模式中，由预定标准提供的一些工具被禁用，并且其中禁用的工具的标识被包括在位流中，禁用的工具 是一组或多个：图像或图像部分的双向预测编码，使用去块滤波器，使用多个参考图像。
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23.发明申请Video decoder locally uses motion-compensated interpolation to reconstruct macro-block skipped by encoder 审中-公开视频解码器本地使用运动补偿内插来重构由编码器跳过的宏块公开(公告)号：US20050013496A1
公开(公告)日：2005-01-20
申请号：US10621003
申请日：2003-07-16
CPC分类号： H04N19/132 , H04N19/137 , H04N19/139 , H04N19/176 , H04N19/40 , H04N19/577 , H04N19/61 , H04N19/70
摘要： In macroblock-based coding systems such as MPEG-1 video, MPEG-2 video and MPEG-4 visual, an encoder in the invention decides on macroblock level whether the macroblock is to be encoded or whether local motion-compensated interpolation processing at a compatible decoder can be used to reconstruct the macroblock. In the latter case, the macroblock is skipped. If the decoder detects a skipped macroblock, the decoder reconstructs the macroblock and overwrites the data conventionally generated in MPEG under the skipped macro-block condition.
摘要翻译： 在诸如MPEG-1视频，MPEG-2视频和MPEG-4视觉的基于宏块的编码系统中，本发明的编码器决定宏块水平是否要对宏块进行编码，或者是否在兼容的本地运动补偿插值处理 解码器可用于重建宏块。 在后一种情况下，跳过宏块。 如果解码器检测到跳过的宏块，则解码器重构宏块并且覆盖在跳过的宏块条件下在MPEG中传统生成的数据。
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