公开(公告)号：US10080005B2

公开(公告)日：2018-09-18

申请号：US15179857

申请日：2016-06-10

Applicant: NETFLIX, Inc.

Inventor： Andrey Norkin

IPC: H04N9/64 ,  H04N19/186 ,  H04N19/10 ,  H04N19/86 ,  H04N19/132 ,  H04N19/85

CPC classification number: H04N9/646 ,  H04N9/64 ,  H04N9/68 ,  H04N9/77 ,  H04N19/10 ,  H04N19/132 ,  H04N19/186 ,  H04N19/85 ,  H04N19/86

Abstract: One embodiment of the present invention sets forth a technique for correcting color values. The technique includes downsampling first color space values to generate downsampled color space values and upsampling the downsampled color space values to generate second color space values. The technique further includes modifying at least one component value included in the downsampled color space values based on a first component value included in the first color space values, a second component value included in the second color space values, and an approximation of a nonlinear transfer function.

公开(公告)号：US12192533B2

公开(公告)日：2025-01-07

申请号：US18166430

申请日：2023-02-08

Applicant: NETFLIX, INC.

Inventor： Andrey Norkin

IPC: H04N19/86 ,  H04N19/117 ,  H04N19/124 ,  H04N19/132 ,  H04N19/176 ,  H04N19/186 ,  H04N19/80

Abstract: One embodiment of the present invention sets forth a technique for deblocking video frames. The technique includes determining a filter length associated with a boundary between a first block and a second block included in the same video frame. The technique also includes computing a parameter value that minimizes a sum of squares of second derivatives associated with samples from the first block and second block that are adjacent to the boundary. The technique further includes determining a plurality of filter values based on the parameter value and the filter length, and applying a filter having the filter length and the filter values to additional samples within the first and second blocks to generate two filtered blocks corresponding to the first and second blocks. The technique additionally comprises generating a second video frame that includes the two filtered blocks.

公开(公告)号：US10750146B2

公开(公告)日：2020-08-18

申请号：US16133629

申请日：2018-09-17

Applicant: NETFLIX, INC.

Inventor： Andrey Norkin

IPC: H04N9/64 ,  H04N19/132 ,  H04N19/85 ,  H04N9/68 ,  H04N9/77 ,  H04N19/186 ,  H04N19/10 ,  H04N19/86

Abstract: One embodiment of the present invention sets forth a technique for correcting color values. The technique includes downsampling first color space values to generate downsampled color space values and upsampling the downsampled color space values to generate second color space values. The technique further includes modifying at least one component value included in the downsampled color space values based on a first component value included in the first color space values, a second component value included in the second color space values, and an approximation of a nonlinear transfer function.

公开(公告)号：US10742986B2

公开(公告)日：2020-08-11

申请号：US15725267

申请日：2017-10-04

Applicant: NETFLIX, INC.

Inventor： Andrey Norkin

IPC: H04N19/132 ,  H04N19/85 ,  H04N9/64 ,  H04N19/186 ,  H04N1/60

Abstract: One embodiment of the present invention sets forth a technique for correcting color values. The technique includes downsampling first color space values to generate downsampled color space values and upsampling the downsampled color space values via a first upsampling filter type to generate second color space values. The technique further includes modifying at least one component value included in the downsampled color space values based on a first component value included in the first color space values, a second component value included in the second color space values, and an approximation of a nonlinear transfer function. The technique further includes at least one of (i) storing an indication of the first upsampling filter type in conjunction with a video bitstream associated with the at least one component value, and (ii) transmitting the indication of the first upsampling filter type to a receiving device in conjunction with the video bitstream.

公开(公告)号：US10715772B2

公开(公告)日：2020-07-14

申请号：US15725266

申请日：2017-10-04

Applicant: NETFLIX, INC.

Inventor： Andrey Norkin

IPC: H04N9/64 ,  H04N19/117 ,  H04N19/132 ,  H04N19/186 ,  H04N1/407 ,  H04N1/393 ,  H04N9/73 ,  G06T5/00 ,  H04N9/77 ,  H04N19/85 ,  H04N19/59 ,  H04N9/68 ,  H04N19/463 ,  H04N19/80

Abstract: One embodiment of the present invention sets forth a technique for correcting color values. The technique includes downsampling first color space values to generate downsampled color space values, upsampling the downsampled color space values to generate second color space values, and determining a first new value for at least one component value included in the downsampled color space values based on a first component value included in the first color space values, a second component value included in the second color space values, and an approximation of a nonlinear transfer function. The technique further includes determining that a first color component value associated with the first new value is outside of a color space range, and determining a second new value for the at least one component value, where the first color component associated with the second new value is within the color space range.