IMAGE-DENOISING PREPROCESS FOR ROBUST CONTRAST-DETECTION AUTOFOCUS WITH LOW-LIGHT AND LOW-CONTRAST SUBJECTS - Patent 4555745

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EP 4 555 745 A1

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(43)	Date of publication:
	21.05.2025 Bulletin 2025/21

(21)	Application number: 23794579.5

(22)	Date of filing: 03.10.2023

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International Patent Classification (IPC):

H04N 23/67^(2023.01)

(52)	Cooperative Patent Classification (CPC):
	H04N 23/673

(86)	International application number:
	PCT/US2023/075813

(87)	International publication number:
	WO 2025/075639 (10.04.2025 Gazette 2025/15)

(84)	Designated Contracting States:
	AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC ME MK MT NL NO PL PT RO RS SE SI SK SM TR
	Designated Extension States:
	BA
	Designated Validation States:
	KH MA MD TN

(71)	Applicant: Google LLC
	Mountain View, CA 94043 (US)

(72)	Inventors:
	GAMADIA, Mark Mountain View, CA 94043 (US) KIM, Jae Soo Mountain View, CA 94043 (US)

(74)	Representative: Marks & Clerk GST
	1 New York Street Manchester M1 4HD Manchester M1 4HD (GB)

(54)	IMAGE-DENOISING PREPROCESS FOR ROBUST CONTRAST-DETECTION AUTOFOCUS WITH LOW-LIGHT AND LOW-CONTRAST SUBJECTS