公开(公告)号：US20210304365A1

公开(公告)日：2021-09-30

申请号：US16831511

申请日：2020-03-26

Applicant: Intel Corporation

Inventor： Susanta BHATTACHARJEE ,  Perazhi SAMEER KALATHIL ,  Kishore NEDUNURI ,  Darshan N

IPC: G06T5/00 ,  G06T1/20 ,  H04N5/235

Abstract: Examples described herein include a graphics processing apparatus that includes a memory device and a display engine coupled to the memory device. The display engine is configured to apply dither on a region of an image and modify a first pixel of an image stored in the memory based on pseudo-random noise to reduce color banding impressions. In some examples, the pseudo-random noise is based on one or more of: local brightness estimation and one or more prior noise levels. In some examples, the display engine is to determine the local brightness estimation based on an average brightness of a pixel region surrounding the first pixel and the first pixel. In some examples, the display engine is configured to bound the pseudo-random noise based on a noise applied to a pixel in a same position as that of the first pixel in a prior frame within a same scene.

公开(公告)号：US11915391B2

公开(公告)日：2024-02-27

申请号：US16831511

申请日：2020-03-26

Applicant: Intel Corporation

Inventor： Susanta Bhattacharjee ,  Perazhi Sameer Kalathil ,  Kishore Nedunuri ,  Darshan N

IPC: G06K9/00 ,  G06T1/20 ,  G06T5/00 ,  H04N23/71

CPC classification number: G06T5/002 ,  G06T1/20 ,  G06T5/008 ,  H04N23/71

Abstract: Examples described herein include a graphics processing apparatus that includes a memory device and a display engine coupled to the memory device. The display engine is configured to apply dither on a region of an image and modify a first pixel of an image stored in the memory based on pseudo-random noise to reduce color banding impressions. In some examples, the pseudo-random noise is based on one or more of: local brightness estimation and one or more prior noise levels. In some examples, the display engine is to determine the local brightness estimation based on an average brightness of a pixel region surrounding the first pixel and the first pixel. In some examples, the display engine is configured to bound the pseudo-random noise based on a noise applied to a pixel in a same position as that of the first pixel in a prior frame within a same scene.