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Selecting visible regions in nighttime images for performing clear path detection
US8948449B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8948449-B2 |
| Application number | US-201213366420-A |
| Country | US |
| Kind code | B2 |
| Filing date | Feb 6, 2012 |
| Priority date | Feb 6, 2012 |
| Publication date | Feb 3, 2015 |
| Grant date | Feb 3, 2015 |
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Abstract
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A method provides for determining visible regions in a captured image during a nighttime lighting condition. An image is captured from an image capture device mounted to a vehicle. An intensity histogram of the captured image is generated. An intensity threshold is applied to the intensity histogram for identifying visible candidate regions of a path of travel. The intensity threshold is determined from a training technique that utilizes a plurality of training-based captured images of various scenes. An objective function is used to determine objective function values for each correlating intensity value of each training-based captured image. The objective function values and associated intensity values for each of the training-based captured images are processed for identifying a minimum objective function value and associated optimum intensity threshold for identifying the visible candidate regions of the captured image.
First claim
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What is claimed is: 1. A method of determining visible regions in a captured image during a nighttime lighting condition, the method comprising the steps of: capturing an image from an image capture device mounted to a vehicle; generating an intensity histogram of the captured image; applying an intensity threshold to the intensity histogram for identifying visible candidate regions of a path of travel, the intensity threshold determined from a training technique that utilizes…
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- G06V20/56Primary
Physics · mapped topic
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- What does patent US8948449B2 cover?
- A method provides for determining visible regions in a captured image during a nighttime lighting condition. An image is captured from an image capture device mounted to a vehicle. An intensity histogram of the captured image is generated. An intensity threshold is applied to the intensity histogram for identifying visible candidate regions of a path of travel. The intensity threshold is determ…
- Who is the assignee on this patent?
- Zhang Wende, Wang Jinsong, Gm Global Tech Operations Inc
- What technology area does this patent fall under?
- Primary CPC classification G06V20/56. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Feb 03 2015 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).