公开(公告)号：US20140105277A1

公开(公告)日：2014-04-17

申请号：US13653245

申请日：2012-10-16

Applicant: MICROSOFT CORPORATION

Inventor： Lazar Bivolarsky ,  Jekaterina Reeder

IPC: H04N7/26

CPC classification number: H04N19/18 ,  H04N19/126 ,  H04N19/154 ,  H04N19/162 ,  H04N19/164 ,  H04N19/36 ,  H04N19/46 ,  H04N19/463

Abstract: A video bitstream is received from an encoder, comprising encoded image portions each having a common form representing components of a channel in a color space. Each of a plurality of the encoded image portions comprises a different set of quantized values of the components, including at least a value of a first of the components being quantized from amongst a first scheme of quantized levels. Further, the received bitstream comprises a look-up table mapping the quantized levels of the first scheme to at least partially de-quantized respective levels. A de-quantizer uses the look-up table received in the bitstream to at least partially de-quantize the different quantized values of the first component in a plurality of the image portions, by converting the quantized values of the first component to at least partially de-quantized values corresponding to ones of the at least partially de-quantized levels of the first scheme.

Abstract translation: 从编码器接收视频比特流，包括编码图像部分，每个编码图像部分具有表示颜色空间中的频道的分量的公共形式。 多个编码图像部分中的每一个包括组分的不同的量化值集合，包括至少从第一量化级别中量化的分量中的第一组分的值。 此外，所接收的比特流包括将第一方案的量化级别映射到至少部分去量化的相应级别的查找表。 解量化器使用在比特流中接收的查找表来对多个图像部分中的第一分量的不同量化值进行至少部分去量化，通过将第一分量的量化值转换为至少部分地 对应于第一方案的至少部分去量化的级别中的一个的去量化值。