公开(公告)号：US08345775B2

公开(公告)日：2013-01-01

申请号：US12102714

申请日：2008-04-14

申请人： Haitao Guo ,  Sally Fung ,  Timothy J. Millet

发明人： Haitao Guo ,  Sally Fung ,  Timothy J. Millet

IPC分类号： H04N7/12

CPC分类号： H04N19/86

摘要： A technique is provided for processing decoded video data to mask visual compression artifacts resulting from video compression. In accordance with this technique, a hardware block is provided for generating and adding random noise to the decoded video stream. In one embodiment, a random number is generated for each pixel of the decoded video data and compared against one or more threshold values to determine a threshold range. In such an embodiment, a noise addend value is selected based upon the threshold comparison and summed with the current pixel. While the present technique may not eliminate the compression artifacts, the addition of random noise renders the compression artifacts less noticeable to the human eye and, therefore, more aesthetically pleasing to a viewer.

摘要翻译： 提供了一种用于处理解码的视频数据以掩盖视频压缩产生的视觉压缩伪影的技术。 根据该技术，提供了一个硬件块，用于产生并将随机噪声添加到解码的视频流中。 在一个实施例中，为解码视频数据的每个像素生成随机数，并与一个或多个阈值进行比较以确定阈值范围。 在这样的实施例中，基于阈值比较选择噪声加数值并与当前像素相加。 虽然本技术可能不能消除压缩伪影，但是随机噪声的增加使得压缩伪影对人眼不那么显着，因此对于观看者而言更加美观。

公开(公告)号：US20090257507A1

公开(公告)日：2009-10-15

申请号：US12102714

申请日：2008-04-14

申请人： HAITAO GUO ,  Sally Fung ,  Timothy J. Millet

发明人： HAITAO GUO ,  Sally Fung ,  Timothy J. Millet

IPC分类号： H04B1/66

CPC分类号： H04N19/86

摘要： A technique is provided for processing decoded video data to mask visual compression artifacts resulting from video compression. In accordance with this technique, a hardware block is provided for generating and adding random noise to the decoded video stream. In one embodiment, a random number is generated for each pixel of the decoded video data and compared against one or more threshold values to determine a threshold range. In such an embodiment, a noise addend value is selected based upon the threshold comparison and summed with the current pixel. While the present technique may not eliminate the compression artifacts, the addition of random noise renders the compression artifacts less noticeable to the human eye and, therefore, more aesthetically pleasing to a viewer.

摘要翻译： 提供了一种用于处理解码的视频数据以掩盖视频压缩产生的视觉压缩伪影的技术。 根据该技术，提供了一个硬件块，用于产生并将随机噪声添加到解码的视频流中。 在一个实施例中，为解码视频数据的每个像素生成随机数，并与一个或多个阈值进行比较以确定阈值范围。 在这样的实施例中，基于阈值比较选择噪声加数值并与当前像素相加。 虽然本技术可能不能消除压缩伪影，但是随机噪声的增加使得压缩伪影对人眼不那么显着，因此对于观看者而言更加美观。

公开(公告)号：US20130301740A1

公开(公告)日：2013-11-14

申请号：US13471116

申请日：2012-05-14

申请人： Haitao Guo ,  Sally Fung ,  Timothy John Millet

发明人： Haitao Guo ,  Sally Fung ,  Timothy John Millet

IPC分类号： G06K9/40 ,  H04N7/26

CPC分类号： H04N19/86 ,  H04N19/14 ,  H04N19/182 ,  H04N19/436

摘要： A technique is provided for processing decoded video data to mask visual compression artifacts resulting from video compression. In accordance with this technique, a hardware block is provided for generating and adding random noise to the decoded video stream. In one embodiment, a random number is generated for each pixel of the decoded video data and compared against one or more threshold values to determine a threshold range. In such an embodiment, a noise addend value is selected based upon the threshold comparison and summed with the current pixel. While the present technique may not eliminate the compression artifacts, the addition of random noise renders the compression artifacts less noticeable to the human eye and, therefore, more aesthetically pleasing to a viewer.

摘要翻译： 提供了一种用于处理解码的视频数据以掩盖视频压缩产生的视觉压缩伪影的技术。 根据该技术，提供了一个硬件块，用于产生并将随机噪声添加到解码的视频流中。 在一个实施例中，为解码视频数据的每个像素生成随机数，并与一个或多个阈值进行比较以确定阈值范围。 在这样的实施例中，基于阈值比较选择噪声加数值并与当前像素相加。 虽然本技术可能不能消除压缩伪影，但是随机噪声的增加使得压缩伪影对人眼不那么显着，因此对于观看者而言更加美观。