US 12,731,270 B2Granted

High dynamic range scene cut detection

AssigneeQUALCOMM Incorporated

InventorsShang-Chih Chuang, Zhongshan Wang, Yi-Chun Lu

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Abstract

Systems and techniques are described herein for processing video data. In some examples, a process is described that can include obtaining a plurality of frames, determining a scene cut in the plurality of frames, and determining a smoothed histogram based on the determined scene cut. For instance, the process can include determining a first characteristic of at least a first frame of the plurality of frames and a second characteristic of at least a second frame of the plurality of frames, determining whether a difference between the first characteristic and the second characteristic is greater than a threshold difference, and determining the scene cut based a determination that the difference between the first characteristic and the second characteristic is greater than the threshold difference.

Claims30

Dependent claims

An apparatus for processing video data, comprising:

at least one memory;
and
at least one processor coupled to the at least one memory, the at least one processor configured to:
determine a first characteristic of at least a first frame of a plurality of frames and a second characteristic of at least a second frame of the plurality of frames;
determine whether a difference between the first characteristic and the second characteristic is greater than a threshold difference;
determine a scene cut in the plurality of frames based a determination that the difference between the first characteristic and the second characteristic is greater than the threshold difference, wherein the scene cut comprises a subset of frames of the plurality of frames, the subset of frames bounded by a beginning stop point and an ending stop point identified based on the difference between the first characteristic and the second characteristic;
and
determine at least one smoothed histogram using the subset of frames of the plurality of frames.

5 more elements

A method of processing video data, comprising:

determining a first characteristic of at least a first frame of a plurality of frames and a second characteristic of at least a second frame of the plurality of frames;
determining whether a difference between the first characteristic and the second characteristic is greater than a threshold difference;
determining a scene cut in the plurality of frames based a determination that the difference between the first characteristic and the second characteristic is greater than the threshold difference, wherein the scene cut comprises a subset of frames of the plurality of frames, the subset of frames bounded by a beginning stop point and an ending stop point identified based on the difference between the first characteristic and the second characteristic;
and
determining at least one smoothed histogram using the subset of frames of the plurality of frames.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application: 18/553,496Filed 15 Sep 2021 · us provisional application
Priority: 22 May 2021
Published: US 2024/0037764 A11 Feb 2024
Granted: 8 Sep 2026
Term ends: Not estimatedThe source records don’t support an estimate.

Classification5 codes

G06T 7/254
Analysis of motion: involving subtraction of images
G06T 5/40
Image enhancement or restoration: using histogram techniques
G06T 5/50
Image enhancement or restoration: using two or more images, e.g. averaging or subtraction
G06T 2207/20224
Image combination: image subtraction