PatentsDB

Vision-based scene detection

US9635271B2 · US · B2

Patent metadata
FieldValue
Publication numberUS-9635271-B2
Application numberUS-201113298615-A
CountryUS
Kind codeB2
Filing dateNov 17, 2011
Priority dateNov 17, 2011
Publication dateApr 25, 2017
Grant dateApr 25, 2017

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  1. Title

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  2. Abstract

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  3. Assignees and inventors

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  4. Key dates

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  5. First independent claim

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  6. CPC / IPC classifications

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  7. Citations and related patents

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Abstract

Official abstract text for this publication.

A method of distinguishing between daytime lighting conditions and nighttime lighting conditions based on a captured image by a vision-based imaging device along a path of travel. An image is captured by a vision-based imaging device. A region of interest is selected in the captured image. A light intensity value is determined for each pixel within the region of interest. A cumulative histogram is generated based on light intensity values within the region of interest. The cumulative histogram including a plurality of category bins representing the light intensity values. Each category bin identifies an aggregate value of light intensity values assigned to each respective category bin. An aggregate value is compared within a predetermined category bin of the histogram to a first predetermined threshold. A determination is made whether the image is captured during the daytime lighting conditions as a function of the aggregate value within the predetermined category bin.

First claim

Opening claim text (preview).

What is claimed is: 1. A method of distinguishing between daytime lighting conditions and nighttime lighting conditions based on a captured image by a vision-based imaging device along a path of travel, the method comprising: capturing an image by a vision-based imaging device; selecting a region of interest in the captured image; determining a light intensity value for each pixel within the region of interest; generating a cumulative histogram based on light intensity value…

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Frequently asked questions

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What does patent US9635271B2 cover?
A method of distinguishing between daytime lighting conditions and nighttime lighting conditions based on a captured image by a vision-based imaging device along a path of travel. An image is captured by a vision-based imaging device. A region of interest is selected in the captured image. A light intensity value is determined for each pixel within the region of interest. A cumulative histogram…
Who is the assignee on this patent?
Zhang Wende, Wang Jinsong, Gm Global Tech Operations Llc
What technology area does this patent fall under?
Primary CPC classification H04N23/71. Mapped technology areas include Electricity.
When was this patent published?
Publication date Tue Apr 25 2017 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
What related patents are in patentsdb?
We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).