公开(公告)号：US08422546B2

公开(公告)日：2013-04-16

申请号：US11137924

申请日：2005-05-25

申请人： Chih-Lung Lin ,  Minghui Xia ,  Pohsiang Hsu ,  Shou-Jen Wu

发明人： Chih-Lung Lin ,  Minghui Xia ,  Pohsiang Hsu ,  Shou-Jen Wu

IPC分类号： H04B1/66

CPC分类号： H04N19/18 ,  H04N19/117 ,  H04N19/126 ,  H04N19/132 ,  H04N19/14 ,  H04N19/176 ,  H04N19/61

摘要： A video encoder includes a region detector module that classifies blocks of video frames. An adaptive filter module applies a median filter to a block based upon a block classification assigned by the region detector module. An adaptive quantization module quantizes a block according to a quantization method adaptively determined based upon a block classification assigned by the region detection module. In one example, a video encoder adaptively determines a median filter selected using a block classification. In another example, a video encoder adaptively determines whether to drop an isolated last transform coefficient based on the block classification, and/or applies a dead-zone selected using the block classification.

摘要翻译： 视频编码器包括对视频帧块进行分类的区域检测器模块。 自适应滤波器模块基于由区域检测器模块分配的块分类将中值滤波器应用于块。 自适应量化模块根据由区域检测模块分配的块分类自适应地确定的量化方法量化块。 在一个示例中，视频编码器自适应地确定使用块分类选择的中值滤波器。 在另一示例中，视频编码器基于块分类自适应地确定是否丢弃隔离的最后变换系数，和/或应用使用块分类选择的死区。

公开(公告)号：US20060268990A1

公开(公告)日：2006-11-30

申请号：US11137924

申请日：2005-05-25

申请人： Chih-Lung Lin ,  Minghui Xia ,  Pohsiang Hsu ,  Shou-Jen Wu

发明人： Chih-Lung Lin ,  Minghui Xia ,  Pohsiang Hsu ,  Shou-Jen Wu

IPC分类号： H04N11/04 ,  H04N11/02 ,  H04B1/66 ,  H04N7/12

CPC分类号： H04N19/18 ,  H04N19/117 ,  H04N19/126 ,  H04N19/132 ,  H04N19/14 ,  H04N19/176 ,  H04N19/61

摘要： A video encoder includes a region detector module that classifies blocks of video frames. An adaptive filter module applies a median filter to a block based upon a block classification assigned by the region detector module. An adaptive quantization module quantizes a block according to a quantization method adaptively determined based upon a block classification assigned by the region detection module. In one example, a video encoder adaptively determines a median filter selected using a block classification. In another example, a video encoder adaptively determines whether to drop an isolated last transform coefficient based on the block classification, and/or applies a dead-zone selected using the block classification.