公开(公告)号：US12050830B2

公开(公告)日：2024-07-30

申请号：US17606433

申请日：2020-04-20

Applicant: Dolby Laboratories Licensing Corporation

Inventor： Ali Zandifar ,  James E. Crenshaw ,  Cristina Michel Vasco

IPC: G06T7/11 ,  G06F3/14 ,  G06T5/92 ,  G06V20/40 ,  G06V20/70 ,  H04N7/01 ,  H04N19/46 ,  G06V10/26

CPC classification number: G06F3/14 ,  G06T5/92 ,  G06T7/11 ,  G06V20/41 ,  G06V20/46 ,  G06V20/70 ,  H04N7/01 ,  H04N19/46 ,  G06T2207/10016 ,  G06T2207/20021 ,  G06T2207/20208 ,  G06V10/26 ,  G06V20/49 ,  G06V2201/10

Abstract: In image processing system comprises an input configured to receive an image signal, the image signal including a plurality of frames of image data; and a processor configured to automatically determine an image classification based on at least one frame of the plurality of frames, and dynamically generate a mapping metadata based on the image classification. The processor includes determination circuitry configured to determine a content type for the image signal; segmentation circuitry configured to segment the image data into a plurality of feature item regions, based on the content type; extraction circuitry configured to extract at least one image aspect value for respective ones of the plurality of feature item regions.

公开(公告)号：US20220180635A1

公开(公告)日：2022-06-09

申请号：US17606433

申请日：2020-04-20

Applicant: Dolby Laboratories Licensing Corporation

Inventor： Ali Zandifar ,  James E. Crenshaw ,  Cristina Michel Vasco

IPC: G06V20/40 ,  G06T7/11 ,  G06V10/60 ,  G06V10/22 ,  G06T5/00 ,  H04N7/01 ,  H04N19/46

Abstract: In image processing system comprises an input configured to receive an image signal, the image signal including a plurality of frames of image data; and a processor configured to automatically determine an image classification based on at least one frame of the plurality of frames, and dynamically generate a mapping metadata based on the image classification. The processor includes determination circuitry configured to determine a content type for the image signal; segmentation circuitry configured to segment the image data into a plurality of feature item regions, based on the content type; extraction circuitry configured to extract at least one image aspect value for respective ones of the plurality of feature item regions.

公开(公告)号：US11336895B2

公开(公告)日：2022-05-17

申请号：US16640332

申请日：2018-09-05

Applicant: Dolby Laboratories Licensing Corporation

Inventor： Anustup Kumar Atanu Choudhury ,  Robin Atkins ,  Thaddeus Beier ,  Ali Zandifar ,  Ian Godin

IPC: H04N19/136 ,  H04N19/186 ,  H04N19/70

Abstract: A method for generating metadata for use by a video decoder for displaying video content encoded by a video encoder includes: (1) accessing a target tone mapping curve; (2) accessing a decoder tone curve corresponding to a tone curve used by the video decoder for tone mapping the video content; (3) generating a plurality of parameters of a trim-pass function used by the video decoder to apply after applying the decoder tone curve to the video content, wherein the parameters of the trim-pass function are generated to approximate the target tone curve with the combination of the trim-pass function and the decoder tone curve, and (4) generating the metadata for use by the video decoder, including said plurality of parameters of the trim-pass function.