Complex marking determining device and complex marking determining method
First Claim
Patent Images
1. A complex marking determining device comprising:
- a camera that captures an image of a traveling road of a vehicle, and obtains a traveling road image; and
an electronic control unit configured to;
set a lane marking display region in a position where a lane marking is displayed, in the traveling road image obtained by the camera, and set a road surface display region in a position that is closer to a center of the traveling road than the lane marking display region, and where a road surface other than the lane marking is displayed, in the traveling road image;
calculate a lane marking representative value indicative of a brightness state of a plurality of pixels that make up the lane marking display region, and calculate a road surface representative value indicative of a brightness state of a plurality of pixels that make up the road surface display region;
determine that the lane marking is a complex marking at least when a degree of deviation between the lane marking representative value and the road surface representative value is equal to or greater than a first threshold value;
detect a number of edge points in the lane marking display region, anddetermine that the lane marking is a complex marking when the degree of deviation is equal to or greater than the first threshold value, and the number of edge points is equal to or greater than a second threshold value.
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Abstract
A complex marking determining device includes a brightness state calculating portion configured to calculate a lane marking representative value indicative of a brightness state of a plurality of pixels that make up a lane marking display region, and calculate a road surface representative value indicative of a brightness state of a plurality of pixels that make up the road surface display region; and a complex marking determining portion configured to determine that the lane marking is a complex marking at least when a degree of deviation between the lane marking representative value and the road surface representative value is equal to or greater than a first threshold value.
17 Citations
6 Claims
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1. A complex marking determining device comprising:
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a camera that captures an image of a traveling road of a vehicle, and obtains a traveling road image; and an electronic control unit configured to; set a lane marking display region in a position where a lane marking is displayed, in the traveling road image obtained by the camera, and set a road surface display region in a position that is closer to a center of the traveling road than the lane marking display region, and where a road surface other than the lane marking is displayed, in the traveling road image; calculate a lane marking representative value indicative of a brightness state of a plurality of pixels that make up the lane marking display region, and calculate a road surface representative value indicative of a brightness state of a plurality of pixels that make up the road surface display region; determine that the lane marking is a complex marking at least when a degree of deviation between the lane marking representative value and the road surface representative value is equal to or greater than a first threshold value; detect a number of edge points in the lane marking display region, and determine that the lane marking is a complex marking when the degree of deviation is equal to or greater than the first threshold value, and the number of edge points is equal to or greater than a second threshold value. - View Dependent Claims (2, 3, 4, 5)
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6. A complex marking determining method comprising:
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capturing an image of a traveling road of a vehicle, and obtaining a traveling road image; setting a lane marking display region in a position where a lane marking is displayed, in the traveling road image, and setting a road surface display region in a position that is closer to a center of the traveling road than the lane marking display region, and where a road surface other than the lane marking is displayed, in the traveling road image; calculating a lane marking representative value indicative of a brightness state of a plurality of pixels that make up the lane marking display region, and calculating a road surface representative value indicative of a brightness state of a plurality of pixels that make up the road surface display region; determining that the lane marking is a complex marking when a degree of deviation between the lane marking representative value and the road surface representative value is equal to or greater than a preset threshold value; detecting a number of edge points in the lane marking display region; and determining that the lane marking is a complex marking when the degree of deviation is equal to or greater than the first threshold value, and the number of edge points is equal to or greater than a second threshold value.
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Specification