Malfunction diagnosis apparatus
First Claim
1. A malfunction diagnosis apparatus diagnosing a malfunction of a system for processing an image captured by an on-board camera, and including a processor configured to cause performance of operations, the operations comprising:
- detecting, in a first image captured by a vehicle and using a line recognition algorithm, a plurality of lines printed on a road surface;
detecting, in the first image, a portion of the road surface with no line printed thereon;
setting, in response to the plurality of lines being detected in the first image in which the plurality of lines are detected, a plurality of first areas that each include a corresponding line of the plurality of detected lines, the plurality of first areas being arranged in parallel with a gap therebetween in a horizontal direction;
setting a second area within the gap that corresponds to the detected portion with no line printed thereon;
transmitting information about positions of the second area and the plurality of first areas; and
in response to the plurality of lines being detected in the first image and in response to one or more of the plurality of lines not being detected in a second image that is captured by the vehicle after the first image is captured and that is captured while the vehicle is cruising;
calculating, using the information about the positions of the second area and the plurality of first areas, a first brightness in a plurality of first areas of the second image having positions corresponding to the positions of the plurality of first areas of the first image by calculating an average value of brightness of each pixel included in the plurality of the first areas of the second image, and a second brightness in a second area of the second image having a position corresponding to the position of the second area of the first image by calculating an average value of brightness of each pixel included in the second area of the second image; and
diagnosing the malfunction using the first brightness and the second brightness.
1 Assignment
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Accused Products
Abstract
This malfunction diagnosis apparatus detects a line on a road surface by distinguishing the line from an asphalt surface other than the line. The malfunction diagnosis apparatus sets a first area corresponding to the line and a second area corresponding to the asphalt surface using a first image captured while the line is detected. The malfunction diagnosis apparatus calculates a first brightness in the first area and a second brightness in the second area using a second image captured while the vehicle is cruising and the line is not detected. Further, the malfunction diagnosis apparatus diagnoses the malfunction based on at least one of the first brightness and the second brightness.
4 Citations
11 Claims
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1. A malfunction diagnosis apparatus diagnosing a malfunction of a system for processing an image captured by an on-board camera, and including a processor configured to cause performance of operations, the operations comprising:
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detecting, in a first image captured by a vehicle and using a line recognition algorithm, a plurality of lines printed on a road surface; detecting, in the first image, a portion of the road surface with no line printed thereon; setting, in response to the plurality of lines being detected in the first image in which the plurality of lines are detected, a plurality of first areas that each include a corresponding line of the plurality of detected lines, the plurality of first areas being arranged in parallel with a gap therebetween in a horizontal direction; setting a second area within the gap that corresponds to the detected portion with no line printed thereon; transmitting information about positions of the second area and the plurality of first areas; and in response to the plurality of lines being detected in the first image and in response to one or more of the plurality of lines not being detected in a second image that is captured by the vehicle after the first image is captured and that is captured while the vehicle is cruising; calculating, using the information about the positions of the second area and the plurality of first areas, a first brightness in a plurality of first areas of the second image having positions corresponding to the positions of the plurality of first areas of the first image by calculating an average value of brightness of each pixel included in the plurality of the first areas of the second image, and a second brightness in a second area of the second image having a position corresponding to the position of the second area of the first image by calculating an average value of brightness of each pixel included in the second area of the second image; and diagnosing the malfunction using the first brightness and the second brightness. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A non-transitory computer-readable recording medium storing a malfunction diagnosis program for diagnosing a malfunction of a system for processing an image captured by an on-board camera, the program causing a computer to execute operations comprising:
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detecting, in a first image captured by a vehicle and using a line recognition algorithm, a plurality of lines printed on a road surface; detecting, in the first image, a portion of the road surface with no line printed thereon; setting, in response to the plurality of lines being detected in the first image in which the plurality of lines are detected, a plurality of first areas that each include a corresponding line of the plurality of detected lines, the plurality of first areas being arranged in parallel with a gap therebetween in a horizontal direction; setting a second area within the gap that corresponds to the detected portion with no line printed thereon; transmitting information about positions of the second area and the plurality of first areas; in response to the plurality of lines being detected in the first image and in response to one or more of the plurality of lines not being detected in a second image that is captured by the vehicle after the first image is captured and that is captured while the vehicle is cruising; calculating, using the information about the positions of the second area and the plurality of first areas, a first brightness in a plurality of first areas of the second image having positions corresponding to the positions of the plurality of first areas of the first image by calculating an average value of brightness of each pixel included in the plurality of first areas of the second image, and a second brightness in a second area of the second image having a position corresponding to the position of the second area of the first image by calculating an average value of brightness of each pixel included in the second area of the second image; and diagnosing the malfunction using at least one of the first brightness and the second brightness.
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Specification