Joint clipping operating for filters for video coding
A video encoder or video decoder are configured to reconstruct the video data to generate reconstructed video data. The video encoder or video decoder may further perform a plurality of loop filter operations on the reconstructed video data in parallel, wherein the plurality of loop filter operations includes a first filter operation that is not a bilateral filter operation or a sample adaptive offset (SAO) filter operation, and perform a joint clipping operation on a first output of the first filter and a second output of a second loop filter operation of the plurality of loop filter operations. The first filter operation may be a cross-component sample adaptive offset (CCSAO) filter operation.
1. A method of coding video data, the method comprising:
reconstructing video data to generate reconstructed video data;
performing a plurality of loop filter operations on the reconstructed video data in parallel, wherein the plurality of loop filter operations includes a first loop filter operation, a second loop filter operation, and a third loop filter operation, wherein the first loop filter operation is a cross-component sample adaptive offset (CCSAO) filter operation, the second loop filter operation is a bilateral filter operation, and the third loop filter operation is a sample adaptive offset (SAO) filter operation;
summing respective outputs of the CCSAO filter operation, the SAO filter operation, the bilateral filter operation, and a deblocking filter operation to generate a first sum; and
performing a joint clipping operation on the first sum.
2. The method of claim 1 , further comprising:
performing the deblocking filtering operation on the reconstructed video data prior to performing the plurality of loop filter operations.
3. The method of claim 1 , further comprising:
performing an adaptive loop filtering operation after performing the plurality of loop filter operations.
4. The method of claim 1 , wherein coding comprises encoding, and wherein reconstructing the video data to generate the reconstructed video data comprises:
reconstructing the video data in a reconstruction loop of a video encoder to generate the reconstructed video data.
5. The method of claim 1 , wherein coding comprises decoding, and wherein reconstructing the video data to generate the reconstructed video data comprises:
decoding the video data to generate the reconstructed video data.
6. An apparatus configured to code video data, the apparatus comprising:
a memory configured to store video data; and
one or more processors in communication with the memory, the one or more processors configured to:
reconstruct the video data to generate reconstructed video data;
perform a plurality of loop filter operations on the reconstructed video data in parallel, wherein the plurality of loop filter operations includes a first loop filter operation, a second loop filter operation, and a third loop filter operation, wherein the first loop filter operation is a cross-component sample adaptive offset (CCSAO) filter operation, the second loop filter operation is a bilateral filter operation, and the third loop filter operation is a sample adaptive offset (SAO) filter operation;
sum respective outputs of the CCSAO filter operation, the SAO filter operation, the bilateral filter operation, and a deblocking filter operation to generate a first sum; and
perform a joint clipping operation on the first sum.
7. The apparatus of claim 6 , wherein the one or more processors are further configured to:
perform the deblocking filtering operation on the reconstructed video data prior to performing the plurality of loop filter operations.
8. The apparatus of claim 6 , wherein the one or more processors are further configured to:
perform an adaptive loop filtering operation after performing the plurality of loop filter operations.
9. The apparatus of claim 6 , wherein the apparatus is a video encoder, and wherein to reconstruct the video data to generate the reconstructed video data, the one or more processors are further configured to:
reconstruct the video data in a reconstruction loop of the video encoder to generate the reconstructed video data.
10. The apparatus of claim 6 , wherein the apparatus is a video decoder, and wherein to reconstruct the video data to generate the reconstructed video data, the one or more processors are further configured to:
decode the video data to generate the reconstructed video data.
11. The apparatus of claim 6 , wherein the apparatus is a wireless communications device.
12. A non-transitory computer-readable storage medium storing instructions that, when executed, cause one or more processors of a device configured to code video data to:
reconstruct the video data to generate reconstructed video data;
perform a plurality of loop filter operations on the reconstructed video data in parallel, wherein the plurality of loop filter operations includes a first loop filter operation, a second loop filter operation, and a third loop filter operation, wherein the first loop filter operation is a cross-component sample adaptive offset (CCSAO) filter operation, the second loop filter operation is a bilateral filter operation, and the third loop filter operation is a sample adaptive offset (SAO) filter operation;
sum respective outputs of the CCSAO filter operation, the SAO filter operation, the bilateral filter operation, and a deblocking filter operation to generate a first sum; and
perform a joint clipping operation on the first sum.
13. The non-transitory computer-readable storage medium of claim 12 , wherein the one or more processors are further configured to:
perform the deblocking filtering operation on the reconstructed video data prior to performing the plurality of loop filter operations.
14. The non-transitory computer-readable storage medium of claim 12 , wherein the one or more processors are further configured to:
perform an adaptive loop filtering operation after performing the plurality of loop filter operations.
15. The non-transitory computer-readable storage medium of claim 12 , wherein the non-transitory computer-readable storage medium is of a video encoder, and wherein to reconstruct the video data to generate the reconstructed video data, the one or more processors are further configured to:
reconstruct the video data in a reconstruction loop of the video encoder to generate the reconstructed video data.
16. The non-transitory computer-readable storage medium of claim 12 , wherein the non-transitory computer-readable storage medium is of a video decoder, and wherein to reconstruct the video data to generate the reconstructed video data, the one or more processors are further configured to:
decode the video data to generate the reconstructed video data.