Tone mapping and tone control integrations for image processing

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United States of America Patent

PATENT NO 11941789
APP PUB NO 20210342987A1
SERIAL NO

17285387

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Abstract

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An image is processed using a combination of techniques, particularly, in which low frequency information is processed using multiple tone control and high frequency information is processed using local tone mapping. An image is divided into a plurality of blocks including a given block. Low frequency information and high frequency information of the given block are separated. The low frequency information is processed using multiple tone control. The high frequency information is processed using local tone mapping. A processed image is then produced based on the processed low frequency information and based on the processed high frequency information, the processed image corresponding to the image captured using the image sensor. The processed image is then output for storage or display. Processing the low frequency information can include using a gain curve and bilinear interpolation. Processing the high frequency information can include using an edge preservation filter.

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Patent Owner(s)

Patent OwnerAddress
GOPRO INC3000 CLEARVIEW WAY SAN MATEO CA 94402

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Douady, Bruno César Orsay, FR 27 156
Guérin, Guillaume Matthieu Chatillon, FR 49 186

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