摘要:
Systems and methods may be provided embodying a novel approach to measuring degradation (or distortion) by analyzing disparity maps from original 3D video and reconstructed 3D video. The disparity maps may be derived using a stereo-matching algorithm exploiting 2-view stereo image disparity. An overall distortion measure may also be determined resulting from the weighted sum of plural measures of distortions, one of the plural distortion measures corresponding to a measure of disparity degradation, and another one corresponding to a measure of geometrical distortion. The measure (or overall distortion measure) is used during real-time encoding to effect various decisions, including mode decision in the coding of each corresponding stereo pair, and in rate control (including stereo pair quantization).
摘要:
Systems and methods may be provided embodying a novel approach to measuring degradation (or distortion) by analyzing disparity maps from original 3D video and reconstructed 3D video. The disparity maps may be derived using a stereo-matching algorithm exploiting 2-view stereo image disparity. An overall distortion measure may also be determined resulting from the weighted sum of plural measures of distortions, one of the plural distortion measures corresponding to a measure of disparity degradation, and another one corresponding to a measure of geometrical distortion. The measure (or overall distortion measure) is used during real-time encoding to effect various decisions, including mode decision in the coding of each corresponding stereo pair, and in rate control (including stereo pair quantization).
摘要:
A system and method is provided to avoid or otherwise reduce luminance and/or chrominance trailing artifacts in block-based hybrid video coders using multiple block sizes and shapes. The proposed trailing artifact avoidance approach has at its core three main components. The first component is a method to identify flat blocks in the source frame that are most susceptible to the appearance of trailing artifacts, and where flatness is determined according to several proposed criteria. The second component is a method to identify bad blocks, which refer to predicted blocks in motion estimation that correspond to flat blocks in the source frame and that contain trailing artifacts. The third component is a method to avoid trailing artifacts when they are detected within a bad block, and where the avoidance is achieved by employing one or more tools from among a proposed set of high fidelity coding tools and/or high performance motion estimation tools.
摘要:
Systems and methods that receives a video stream in a transport stream, the first video stream comprising a plurality of compressed pictures, and that receives information in the video stream, wherein the information includes plural data fields, the received information comprising: a first data field corresponding to a location in the video stream of a potential splice point in the video stream, wherein the value of the first data field identifies a location in the video stream after the location of the received information in the video stream; a second data field corresponding to decompressed pictures yet to be output (DPYTBO) by a video decoder at the identified potential splice point (IPSP) when the video decoder decompresses the video stream, wherein the value of the second data field is a number corresponding to the DPYTBO by the video decoder at the IPSP; and a third data field corresponding to pictures with contiguous output times (WCOT), wherein the value of the third field corresponds to a set of pictures WCOT of the DPYTBO by the video decoder at the IPSP.
摘要:
In one embodiment, a system, comprising an encoder comprising memory with personal video recording assist (PVRA) logic; and a processor configured to execute the PVRA logic to: provide a reference picture reordering command (RPRC) in association with one or more pictures of a video stream to be received in a video stream receive-and-process (VSRP) device, the RPRC configured to cause the VSRP device to reorder or modify associations of reference pictures to ascending reference indices of a derived, default reference picture list such that lower tier number pictures precede higher tier number pictures in a modified reference picture list used for decoding the one or more pictures.
摘要:
Receiving a video stream in a transport stream comprising a plurality of compressed pictures, wherein information in the video stream includes plural data fields comprising: a first data field corresponding to a location in the video stream of a potential splice point, wherein the first data field identifies a location in the video stream after the location of the received information; a second data field corresponding to decompressed pictures yet to be output (DPYTBO) by a video decoder at the identified potential splice point (IPSP) when the video decoder decompresses the video stream, wherein the second data field is a number corresponding to the DPYTBO by the video decoder at the IPSP; and a third data field corresponding to pictures with contiguous output times (WCOT), wherein the third field corresponds to a set of pictures WCOT of the DPYTBO by the video decoder at the IPSP.
摘要:
Providing a video stream in a transport stream, the first video stream providing a plurality of compressed pictures and information, the information including plural data fields including: a first data field corresponding to a location in the video stream of a potential splice point, the value of the first data field identifies a location in the video stream after the location of the provided information; a second data field corresponding to decompressed pictures yet to be output (DPYTBO) by a video decoder at the identified potential splice point (IPSP) when the video decoder decompresses the video stream, the value of the second data field is a number corresponding to the DPYTBO; and a third data field corresponding to pictures with contiguous output times (WCOT), the value of the third field corresponds to a set of pictures WCOT of the DPYTBO.
摘要:
Receiving a video stream in a transport stream comprising a plurality of compressed pictures, wherein information in the video stream includes plural data fields comprising: a first data field corresponding to a location in the video stream of a potential splice point, wherein the first data field identifies a location in the video stream after the location of the received information; a second data field corresponding to decompressed pictures yet to be output (DPYTBO) by a video decoder at the identified potential splice point (IPSP) when the video decoder decompresses the video stream, wherein the second data field is a number corresponding to the DPYTBO by the video decoder at the IPSP; and a third data field corresponding to pictures with contiguous output times (WCOT), wherein the third field corresponds to a set of pictures WCOT of the DPYTBO by the video decoder at the IPSP.
摘要:
Systems and methods that provide a video stream including a first video sequence followed by a second video sequence, and that provide a first information in the video stream pertaining to pictures in the first video sequence, wherein the location of the first information provided in the video stream is in relation to a second information in the video stream, wherein the second information pertains to the end of the first video sequence, wherein the first information in the video stream corresponds to a first information type and the second information in the video stream corresponds to a second information type different than the first information type, and wherein the first information corresponds to auxiliary information.
摘要:
Receiving a video stream in a transport stream comprising a plurality of compressed pictures, wherein information in the video stream includes plural data fields comprising: a first data field corresponding to a location in the video stream of a potential splice point, wherein the first data field identifies a location in the video stream after the location of the received information; a second data field corresponding to decompressed pictures yet to be output (DPYTBO) by a video decoder at the identified potential splice point (IPSP) when the video decoder decompresses the video stream, wherein the second data field is a number corresponding to the DPYTBO by the video decoder at the IPSP; and a third data field corresponding to pictures with contiguous output times (WCOT), wherein the third field corresponds to a set of pictures WCOT of the DPYTBO by the video decoder at the IPSP.