IMAGE PROCESSING CIRCUIT, CIRCUIT ARRANGEMENT, AND ELECTRONIC APPARATUS

Title:

IMAGE PROCESSING CIRCUIT, CIRCUIT ARRANGEMENT, AND ELECTRONIC APPARATUS

Document Type and Number:

Japanese Patent JP2022150350

Kind Code:

A

Abstract:

To determine whether gamma correction for an image is normally performed.SOLUTION: An image processing circuit 100 includes a gamma correction circuit 110, an output image histogram calculation circuit 120, an input image histogram calculation circuit 130, a reference histogram calculation circuit 140, and a histogram comparison circuit 150. The gamma correction circuit perform gamma correction for input image data PXIN with a lookup table and outputs output image data PXOUT. The output image histogram calculation circuit calculates an output image histogram HISOUT. The input image histogram calculation circuit calculates an input image histogram HISIN. The reference histogram calculation circuit calculates a reference histogram HISREF from the input image histogram HISIN based on the lookup table. The histogram comparison circuit compares the output image histogram HISOUT with the reference histogram HISREF.SELECTED DRAWING: Figure 1

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Inventors:

LOIC REMI ROBERT CHRISTIAN MICHAUT
MATSUDA HIDEKI

Application Number:

JP2021052918A

Publication Date:

October 07, 2022

Filing Date:

March 26, 2021

Export Citation:

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Assignee:

SEIKO EPSON CORP

International Classes:

H04N5/202; G09G3/20; G09G5/00; G09G5/06; G09G5/36

Attorney, Agent or Firm:

Satoshi Nakai
Hiroki Matsuoka
Masayuki Imamura

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