METHODS AND APPARATUS FOR PROVIDING IN-LOOP PADDING TECHNIQUES FOR ROTATED SPHERE PROJECTIONS

1 . A method for encoding video data, the video data comprising a projection format that includes redundant data, the method comprising:

obtaining a frame of video data, the frame of video data comprising reduced quality areas within the frame of video data;

transmitting the obtained frame of the video data to a reconstruction engine;

reconstructing the reduced quality areas to nearly original quality within the frame by using other portions of the frame of video data in order to construct a high fidelity frame of video data;

storing the high fidelity frame of video data within a reference picture list; and

using the high fidelity frame of video data stored within the reference picture list for encoding of subsequent frames of the video data.

2 . The method of claim 1 , wherein the using of the other portions of the frame of video data comprises using original quality areas within the frame of video data.

3 . The method of claim 2 , further comprising generating the reduced quality areas within the frame of video data, the generating further comprising rendering the reduced quality areas with inactive pixels.

4 . The method of claim 2 , further comprising generating the reduced quality areas within the frame of video data, the generating further comprising aggressively quantizing the reduced quality areas within the frame of video data.

5 . The method of claim 2 , wherein the reconstructing of the reduced quality areas to nearly original quality further comprises:

applying a geometric rotation to an area within the original quality areas within the frame of video data; and

translating the geometrically rotated area to a reduced quality area within the reduced quality areas within the frame of video data.

6 . A computing device, the computing device comprising:

a signal generation device, the signal generation device configured to capture a plurality of frames of video data;

a processing unit configured to process the plurality of frames of the video data; and

a non-transitory computer-readable storage apparatus, the computer-readable storage apparatus comprising a storage medium comprising computer-readable instructions, the computer-readable instructions being configured to, when executed by the processing unit:

obtain a frame of video data, the frame of video data comprising reduced quality areas within the frame of video data;

cause transmission of the obtained frame of the video data to a reconstruction engine;

reconstruct the reduced quality areas to nearly original quality within the frame of video data via use of other portions of the frame of video data in order to construct a high fidelity frame of video data;

store the high fidelity frame of video data within a reference picture list; and

use the high fidelity frame of video data stored within the reference picture list for encode of subsequent frames of the video data.

7 . The computing device of claim 6 , wherein the signal generation device is further configured to capture panoramic content, the captured panoramic content comprising a 360° field of view (FOV).

8 . The computing device of claim 7 , further comprising additional computer-readable instructions, the additional computer-readable instructions being configured to, when executed by the processing unit:

generate the frame of video data, the generated frame of video data comprising a rotated sphere projection (RSP) projection format.

9 . The computing device of claim 8 , further comprising additional computer-readable instructions, the additional computer-readable instructions being configured to, when executed by the processing unit:

generate the reduced quality areas within the RSP projection format, the generated reduced quality areas utilized to decrease a transmission bitrate for the captured plurality of frames of video data as compared with a transmission of the captured plurality of frames of video data without the reduced quality areas.

10 . The computing device of claim 9 , wherein the generation of the reduced quality areas within the RSP projection format comprises a generation of inactive pixels for the reduced quality areas within the RSP projection format.

11 . The computing device of claim 9 , wherein the generation of the reduced quality areas within the RSP projection format comprises an application of aggressive quantization for the reduced quality areas within the RSP projection format.

12 . The computing device of claim 6 , wherein the use of the other portions of the frame of video data comprises a use of original quality areas within the frame of video data.

13 . The computing device of claim 12 , wherein the reconstruction of the reduced quality areas to nearly original quality further comprises:

application of a geometric rotation to an area within the original quality areas within the frame of video data; and

translation of the geometrically rotated area to a reduced quality area within the reduced quality areas within the frame of video data.

14 . The computing device of claim 6 , further comprising additional computer-readable instructions, the additional computer-readable instructions being configured to, when executed by the processing unit:

receive an encoded frame of video data, the encoded frame of video data comprising a reduced quality version of a pre-encoded version of the frame of video data;

retrieve one or more other frames of video data from a decoded picture buffer, the one or more other frames of video data comprising nearly original quality versions of previously decoded frames;

reconstruct the encoded received frame of video data to nearly original quality using the retrieved one or more other frames of video data; and

store the reconstructed frame of video data to the decoded picture buffer.

15 . The computing device of claim 14 , wherein the storage of the reconstructed frame of video data to the decoded picture buffer enables decode of subsequent encoded frames.

16 . A method for decoding video data, the video data comprising a projection format that includes redundant data, the method comprising:

receiving an encoded frame of video data, the encoded frame of video data comprising a reduced quality version of a pre-encoded version of the frame of video data;

retrieving one or more other frames of video data from a reference picture list, the one or more other frames of video data comprising nearly original quality versions of previously decoded frames;

reconstructing the encoded received frame of video data to nearly original quality using the retrieved one or more other frames of video data; and

storing the reconstructed frame of video data to the reference picture list.

17 . The method of claim 16 , wherein the receiving of the encoded frame of video data comprises receiving an encoded frame of video data according to a rotated sphere projection (RSP) projection format.

18 . The method of claim 17 , further comprising using the stored reconstructed frame of video data for the decoding of subsequent frames of encoded video data.

19 . The method of claim 16 , wherein the reconstructing of the encoded received frame of video data further comprises:

applying a geometric rotation to an area within the retrieved one or more other frames of video data; and

translating the geometrically rotated area to a reduced quality area within the received encoded frame of video data.

20 . The method of claim 19 , further comprising using the stored reconstructed frame of video data for the decoding of subsequent frames of encoded video data.