DETECTION OF NEAR-FIELD CAMERA OBSTRUCTION
First Claim
Patent Images
1. A method for detecting an obstruction within a field of view of a camera from an image captured by the camera, said method comprising:
- analyzing the image, said analyzing of the image comprising;
applying edge detection to the image;
identifying regions of the image lacking edge content; and
,comparing a size of the identified regions to a threshold; and
determining if there is an obstruction based upon a result of said comparison.
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Abstract
A method (100) is provided for detecting an obstruction within a field of view of a camera (12) from an image (200) captured by the camera (12). The method (100) includes: analyzing the image (200) by applying edge detection (104) to the image (200), identifying (108) regions of the image (200) lacking edge content and comparing (112) a size of the identified regions to a threshold; and determining if there is an obstruction based upon a result of said comparison.
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Citations
18 Claims
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1. A method for detecting an obstruction within a field of view of a camera from an image captured by the camera, said method comprising:
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analyzing the image, said analyzing of the image comprising; applying edge detection to the image; identifying regions of the image lacking edge content; and
,comparing a size of the identified regions to a threshold; and determining if there is an obstruction based upon a result of said comparison. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method for detecting an obstruction within a field of view of a camera from an image captured by the camera, said method comprising:
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analyzing the image with a computer processor to identify regions of the image which are out of focus; comparing a size of the identified regions to a threshold; and determining if there is an obstruction based upon a result of said comparison.
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12. A camera system comprising:
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a camera that obtains an image; and an image processor that analyzes said image to determine if there is an obstruction in the camera'"'"'s field of view, wherein said analyzing includes; applying edge detection to the image; identifying regions of the image lacking edge content; comparing a size of the identified regions to a threshold; and determining if there is an obstruction based upon a result of said comparison. - View Dependent Claims (13, 14, 15, 16, 17, 18)
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Specification