Tracking a reference picture based on a designated picture on an electronic device
A method for tracking a reference picture on an electronic device is described. The method includes receiving a bitstream. The method also includes decoding a portion of the bitstream to produce a decoded reference picture. The method further includes tracking the decoded reference picture in a decoded picture buffer (DPB) with reduced overhead referencing based on a designated picture. The method additionally includes decoding a picture based on the decoded reference picture.
1. A method for tracking a reference picture on an electronic device, comprising:
receiving a bitstream;
decoding a portion of the bitstream to produce a decoded reference picture;
tracking the decoded reference picture in a decoded picture buffer (DPB) with reduced overhead referencing based on a designated picture, wherein tracking the decoded reference picture comprises:
determining a picture order count (POC) based on the designated picture;
determining a cycle parameter poc_cycle based on the designated picture; and
obtaining the decoded reference picture according to the POC and the cycle parameter poc_cycle; and
decoding a picture based on the decoded reference picture.
2. The method of claim 1 , wherein the designated picture is an instantaneous decoding refresh (IDR) picture.
3. The method of claim 1 , wherein the cycle parameter is reset based on the designated picture.
4. The method of claim 1 , wherein a buffer description of the decoded reference picture comprises a picture order count (POC), a cycle parameter, a temporal identifier and a scaling parameter.
5. The method of claim 1 , wherein a resolution of the decoded reference picture is different from a resolution of the picture.
6. The method of claim 5 , wherein the method further comprises processing transform coefficients of the decoded reference picture based on a scaling parameter to decode the picture.
7. The method of claim 1 , wherein tracking the decoded reference picture comprises tracking a decoded reference picture collection that includes the decoded reference picture.
8. The method of claim 1 , wherein tracking the decoded reference picture comprises:
obtaining a buffer description; and
modifying the buffer description.
9. The method of claim 8 , wherein modifying the buffer description comprises at least one of deleting an entry, adding an entry and replacing an entry.
10. An electronic device configured for tracking a reference picture, comprising:
a processor;
memory in electronic communication with the processor;
instructions stored in the memory, the instructions being executable to:
receive a bitstream;
decode a portion of the bitstream to produce a decoded reference picture;
track the decoded reference picture in a decoded picture buffer (DPB) with reduced overhead referencing based on a designated picture, wherein tracking the decoded reference picture comprises:
determining a picture order count (POC) based on the designated picture;
determining a cycle parameter poc_cycle based on the designated picture; and
obtaining the decoded reference picture according to the POC and the cycle parameter poc_cycle; and
decode a picture based on the decoded reference picture.
11. The electronic device of claim 10 , wherein the designated picture is an instantaneous decoding refresh (IDR) picture.
12. The electronic device of claim 10 , wherein the cycle parameter is reset based on the designated picture.
13. The electronic device of claim 10 , wherein a buffer description of the decoded reference picture comprises a picture order count (POC), a cycle parameter, a temporal identifier and a scaling parameter.
14. The electronic device of claim 10 , wherein a resolution of the decoded reference picture is different from a resolution of the picture.
15. The electronic device of claim 14 , the instructions being further executable to process transform coefficients of the decoded reference picture based on a scaling parameter to decode the picture.
16. The electronic device of claim 10 , wherein tracking the decoded reference picture comprises tracking a decoded reference picture collection that includes the decoded reference picture.
17. The electronic device of claim 10 , wherein tracking the decoded reference picture comprises:
obtaining a buffer description; and
modifying the buffer description.
18. The electronic device of claim 17 , wherein modifying the buffer description comprises at least one of deleting an entry, adding an entry and replacing an entry.