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 color correction process;
receiving second recommended information in the video bitstream identifying second post-decoding process to be applied to the at least one region, the second post-decoding process being a color correction process;
selecting, by the decoder, one of the first recommended information or the second recommended information; and
applying the one of the first post-decoding process or the second post-decoding process identified by the selected recommended information to the at least one region without applying the other of the first recommended information or 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 one of the first post-decoding process or the second post-decoding process identified by the selected recommended information is not applied to the second region.
2. The method of claim 1 , wherein the second post-decoding process is related to de-blocking.
3. The method of claim 1 , wherein the second post-decoding process maps the at least one region to a target device.
4. The method of claim 1 , wherein the second post-decoding process was selected during studio work prior to mastering the video bitstream.
5. A post-processing device, comprising:
a decoder for decoding a bitstream, the decoder configured to:
receive a video bitstream comprising at least one region comprising two images;
receive metadata from the video bitstream indicating a width and height of an image of the two images;
receive 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 color correction process;
receive second recommended information in the video bitstream identifying second post-decoding process to be applied to the at least one region, the second post-decoding process being a color correction process;
select one of the first recommended information or the second recommended information; and
apply the one of the first post-decoding process or the second post-decoding process identified by the selected recommended information to the at least one region without applying the other of the first recommended information or 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 one of the first post-decoding process or the second post-decoding process identified by the selected recommended information is not applied to the second region.
6. The post-processing device of claim 5 , wherein the second post-decoding process is related to de-blocking.
7. The post-processing device of claim 5 , wherein the second post-decoding process maps the at least one region to a target device.
8. The post-processing device of claim 5 , wherein the second post-decoding process was selected during studio work prior to mastering the video bitstream.