Daytime and nighttime image recognizing method and apparatus

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 8204305
APP PUB NO 20080159623A1
SERIAL NO

11961997

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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In a daytime and nighttime image recognizing method and apparatus, the method comprises predefining an air region and a terrestrial region for each image captured by a camera apparatus; inputting an image captured by the camera apparatus; calculating a lightness value histogram for the air region of the input image; and determining a lighting condition of a photo environment of the camera apparatus based on the lightness value histogram for the air region of the input image. The daytime and nighttime image recognizing method and apparatus are able to correctly recognize the lighting condition of the environment even if the air region in an image is obstructed by a background or there are no lane lines in an image. Moreover, when an erroneous recognition occurs for an individual image, the interference caused by the erroneous recognition can be precluded efficiently.

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Patent Owner(s)

Patent OwnerAddress
ALPINE ELECTRONICS INCTOKYO JAPAN TOKYO METROPOLIS

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Wang, Nan Shenyang, CN 270 961
Zou, Bo Shenyang, CN 48 215

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Citation count rangeNumber of patents cited in rangeNumber of patents cited in various citation count ranges398264492351267559382217218501 - 1011 - 2021 - 3031 - 4041 - 5051 - 6061 - 7071 - 8081 - 9091 - 100100 +050100150200250300350400450500550600650700750800850900

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