Directed interpolation and data post-processing
An encoding device evaluates a plurality of processing and/or post-processing algorithms and/or methods to be applied to a video stream, and signals a selected method, algorithm, class or category of methods/algorithms either in an encoded bitstream or as side information related to the encoded bitstream. A decoding device or post-processor utilizes the signaled algorithm or selects an algorithm/method based on the signaled method or algorithm. The selection is based, for example, on availability of the algorithm/method at the decoder/post-processor and/or cost of implementation. The video stream may comprise, for example, downsampled multiplexed stereoscopic images and the selected algorithm may include any of upconversion and/or error correction techniques that contribute to a restoration of the downsampled images.
1. A method for decoding a video bitstream, the method comprising:
receiving, at a decoder, the video bitstream comprising at least one region comprising two images;
receiving, by the decoder, metadata from the video bitstream indicating a width and height of an image of the two images;
receiving first recommended information in the video bitstream identifying a first post-decoding process to be applied to the at least one region, the first post-decoding process being a spatial process;
receiving second recommended information in the video bitstream identifying second post-decoding process to be applied to the at least one region,
disregarding, by the decoder, the first recommended information without applying the first post-decoding process to the at least one region, and
applying the second post-decoding process identified by the second recommended information to the at least one region;
wherein the video bitstream further comprises a second region different from the at least one region, and
wherein the second post-decoding process is not applied to the second region.
2. A method for post-decoding processing of a video bitstream, the method comprising:
receiving, at a decoder device, the video bitstream comprising at least one region comprising two images;
receiving, by the decoder device, metadata from the video bitstream indicating a width and height of an image of the two images;
receiving, by the decoder device, first recommended information in the video bitstream identifying a first post-decoding process to be applied to the at least one region, the first post-decoding process being a spatial process;
receiving, by the decoder device, second recommended information in the video bitstream identifying second post-decoding process to be applied to the at least one region;
disregarding, by the decoder device, the second recommended information without applying the second post-decoding process to the at least one region, wherein the second recommended information is disregarded based on a predetermined post-decoding process selection criterion; and
applying, by the decoder device, the first post-decoding process identified by the first recommended information to the at least one region including spatially processing the at least one region,
wherein the video bitstream further comprises a second region different from the at least one region, and
wherein the first decoding process is not applied to the second region.
3. The method of claim 2 wherein the second post-decoding process is related to de-blocking.
4. The method of claim 2 wherein the second post-decoding process maps the at least one region to a target device.
5. The method of claim 2 wherein the second post-decoding process was selected during studio work prior to mastering the video bitstream.
6. The method of claim 2 wherein the spatial post-decoding process is at least one of de-interleaving and upsampling.