Systems and methods for low complexity encoding and background detection
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A background, video encoder technology, applied in the field of video encoding, to achieve the effect of simplifying the mode decision and motion estimation process
Inactive Publication Date: 2016-11-16
QUALCOMM INC
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The techniques described further address issues related to adaptively adjusting background detection thresholds, allowing video encoders to save computational resources while maintaining video quality
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[0019] The techniques described in this disclosure generally relate to forward transforms during video encoding, particularly with regard to the High Efficiency Video Coding (HEVC) standard and its extensions.
[0020] Video decoding standards include ITU-T H.261, ISO / IEC MPEG-1Visual, ITU-T H.262 or ISO / IEC MPEG-2Visual, ITU-T H.263, ISO / IEC MPEG-4Visual and ITU-T H .264 (also known as ISO / IEC MPEG-4 AVC), including its Scalable Video Coding (SVC) and Multiview Video Coding (MVC) extensions. Additionally, there exists a new video coding standard, High Efficiency Video Coding (HEVC), which is a joint collaboration between the ITU-T Video Coding Experts Group (VCEG) and the ISO / IEC Motion Picture Experts Group (MPEG) Video Coding Team (JCT-VC) developed.
[0021] As mentioned above, the HEVC standard utilizes forward transforms (eg, in HEVC encoders) and inverse transforms of size up to 32x32, while the AVC standard only utilizes transform sizes up to 8x8. In HEVC, larger tra...
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Abstract
Systems and methods for low complexity encoding and background detection are described herein. One aspect of the subject matter described in the disclosure provides a video encoder comprising a memory configured to store a video block. The video encoder further comprises a processor in communication with the memory. The processor is configured to determine whether the video block is background by comparing the video block to a corresponding block located in a previous temporal frame. The processor is further configured to determine, when the video block is not background, whether one or more sub-blocks of the video block are background by comparing the sub-blocks to corresponding sub-blocks located in the previous temporal frame.
Description
technical field [0001] The present invention relates to video coding. Background technique [0002] Digital video capabilities can be incorporated into a wide variety of devices, including digital television, digital broadcast systems, wireless broadcast systems, personal digital assistants (PDAs), laptop or desktop computers, tablet computers, electronic book readers, Digital cameras, digital recording devices, digital media players, video game devices, video game consoles, cellular or satellite radiotelephones, smart phones, video teleconferencing devices, video streaming devices, and the like. Digital video devices implement video coding techniques such as MPEG-2, MPEG-4, ITU-T H.263, ITU-T H.264 / MPEG-4 Part 10 Advanced Video Coding (AVC), High Efficiency Video Those techniques described in the standards defined by HEVC and extensions to such standards. Video devices may more efficiently transmit, receive, encode, decode, and / or store digital video information by implem...
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