Adaptive resolution change and scalable coding for screen contents
AssigneesBeijing Bytedance Network Technology Co., Ltd., Bytedance Inc.
InventorsJizheng Xu, Kai Zhang, Li Zhang, Hongbin Liu, Yue Wang
Life of this patent
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Abstract
Adaptive resolution change and scalable coding for screen contents are described. One example is a method for video processing, comprising: determining, for a conversion between a picture or a video and a bitstream representation of the picture or the video, whether the picture or the video is native resolution based on an indication included in the bitstream representation; and performing the conversion based on the determination.
Claims16
A method of processing video data, comprising:
- making a determination, for a conversion between a picture or a video and a bitstream of the picture or the video, whether the picture or the video is a screen content based on a usage of one or more certain coding tools or a signaled message;
- and
- performing the conversion based on the determination,
- wherein the one or more certain coding tools include at least one of a transform skip coding mode, a block differential pulse coded modulation (BDPCM) coding mode, an intra block copy coding mode, or a palette coding mode, and
- wherein the picture or the video is determined as the screen content when at least one of a number of regions coded using the one or more certain coding tools, a ratio of the regions coded using the one or more certain coding tools and regions coded without using the one or more certain coding tools, or an area of the regions coded using the one or more certain coding tools surpasses a threshold.
An apparatus for processing video data comprising a processor and a non-transitory memory with instructions thereon, wherein the instructions upon execution by the processor, cause the processor to:
- make a determination, for a conversion between a picture or a video and a bitstream of the picture or the video, whether the picture or the video is screen content based on a usage of one or more certain coding tools or a signaled message;
- and
- perform the conversion based on the determination,
- wherein the one or more certain coding tools include at least one of a transform skip coding mode, a block differential pulse coded modulation (BDPCM) coding mode, an intra block copy coding mode, or a palette coding mode, and
- wherein the picture or the video is determined as the screen content when at least one of a number of regions coded using the one or more certain coding tools, a ratio of the regions coded using the one or more certain coding tools and regions coded without using the one or more certain coding tools, or an area of the regions coded using the one or more certain coding tools surpasses a threshold.
A non-transitory computer-readable recording medium storing a bitstream of a video which is generated by a method performed by a video processing apparatus, wherein the method comprises:
- making a determination, for a picture or a video, whether the picture or the video is screen content based on a usage of one or more certain coding tools or a signaled message;
- and
- generating the bitstream based on the determination, wherein the one or more certain coding tools include at least one of a transform skip coding mode, a block differential pulse coded modulation (BDPCM) coding mode, an intra block copy coding mode, or a palette coding mode, and
- wherein the picture or the video is determined as the screen content when at least one of a number of regions coded using the one or more certain coding tools, a ratio of the regions coded using the one or more certain coding tools and regions coded without using the one or more certain coding tools, or an area of the regions coded using the one or more certain coding tools surpasses a threshold.
Dependencies are inferred from the claim text.