Lane recognition apparatus for vehicle, vehicle thereof, and lane recognition program for vehicle
First Claim
1. A lane recognition apparatus for a vehicle which recognizes a lane along which a vehicle is traveling from a color image of a road acquired via an imaging device mounted on the vehicle, comprising:
- a lane mark detection image acquisition device which acquires a lane mark detection image, which is divided into a first image region composed of pixels having pixel values supposed to be image portions of a lane mark defining the lane and a second image region composed of other pixels, from the color image of the road acquired via the imaging device;
a clustering device which performs clustering in which the first image region of the lane mark detection image is divided into subregions each composed of adjacent pixels;
a color determination device which determines a color of the subregions of the first image region obtained by the division in the clustering;
a lane recognition device which performs line component extraction for each group, considering the subregions determined to have the same color by the color determination device as a single group, and recognizes a line position of the lane defined by the lane mark from the extracted line component;
a type determination device which determines the type of the lane mark defining the lane recognized from the line component on the basis of a distribution state of the subregions, which exist in the vicinity of the line component, constituting the group from which the line component is extracted; and
a vehicle equipment control device which controls equipment of the vehicle according to a recognition result of the lane recognition device,wherein the vehicle equipment control device controls the equipment of the vehicle at least according to the line position of the lane recognized by the lane recognition device and the type of the lane mark defining the lane.
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Accused Products
Abstract
A lane recognition apparatus for the vehicle includes: a lane mark detection image acquisition device which acquires an image divided into a first image region composed of pixels having pixel values supposed to be image portions of a lane mark defining the lane and a second image region composed of other pixels from a color image of a road; a clustering device which divides the first image region into subregions each composed of adjacent pixels; a color determination device which determines a color of the subregions; a lane recognition device which performs line component extraction for each group, considering the subregions determined to have the same color as a single group, and recognizes a line position of the lane defined by the lane mark from the extracted line component; and a vehicle equipment control device which controls equipment of a subject vehicle according to the lane recognition result.
22 Citations
16 Claims
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1. A lane recognition apparatus for a vehicle which recognizes a lane along which a vehicle is traveling from a color image of a road acquired via an imaging device mounted on the vehicle, comprising:
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a lane mark detection image acquisition device which acquires a lane mark detection image, which is divided into a first image region composed of pixels having pixel values supposed to be image portions of a lane mark defining the lane and a second image region composed of other pixels, from the color image of the road acquired via the imaging device; a clustering device which performs clustering in which the first image region of the lane mark detection image is divided into subregions each composed of adjacent pixels; a color determination device which determines a color of the subregions of the first image region obtained by the division in the clustering; a lane recognition device which performs line component extraction for each group, considering the subregions determined to have the same color by the color determination device as a single group, and recognizes a line position of the lane defined by the lane mark from the extracted line component; a type determination device which determines the type of the lane mark defining the lane recognized from the line component on the basis of a distribution state of the subregions, which exist in the vicinity of the line component, constituting the group from which the line component is extracted; and a vehicle equipment control device which controls equipment of the vehicle according to a recognition result of the lane recognition device, wherein the vehicle equipment control device controls the equipment of the vehicle at least according to the line position of the lane recognized by the lane recognition device and the type of the lane mark defining the lane. - View Dependent Claims (2, 3, 4, 5, 6, 7, 10, 11, 12)
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8. A vehicle equipped with an imaging device and having a function of recognizing a lane along which the vehicle is traveling from a color image of a road acquired via the imaging device, comprising:
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a lane mark detection image acquisition device which acquires a lane mark detection image, which is divided into a first image region composed of pixels having pixel values supposed to be image portions of a lane mark defining the lane and a second image region composed of other pixels, from the color image of the road acquired via the imaging device; a clustering device which performs clustering in which the first image region of the lane mark detection image is divided into subregions each composed of adjacent pixels; a color determination device which determines a color of the subregions of the first image region obtained by the division in the clustering; a lane recognition device which performs line component extraction for each group, considering the subregions determined to have the same color by the color determination device as a single group, and recognizes a line position of the lane defined by the lane mark from the extracted line component; a type determination device which determines the type of the lane mark defining the lane recognized from the line component on the basis of a distribution state of the subregions, which exist in the vicinity of the line component, constituting the group from which the line component is extracted; and a vehicle equipment control device which controls equipment of the vehicle according to a recognition result of the lane recognition device, wherein the vehicle equipment control device controls the equipment of the vehicle at least according to the line position of the lane recognized by the lane recognition device and the type of the lane mark defining the lane.
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9. A lane recognition system for a vehicle including a computer processor and a non-transitory computer readable medium for storing computer instructions which causes the computer processor to recognize a lane along which a vehicle is traveling from a color image of a road acquired via an imaging device mounted on the vehicle, the computer instructions having functions of causing the computer processor to perform:
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lane mark detection image acquisition for acquiring a lane mark detection image, which is divided into a first image region composed of pixels having pixel values supposed to be image portions of a lane mark defining the lane and a second image region composed of other pixels, from the color image of the road acquired via the imaging device; clustering for dividing the first image region of the lane mark detection image into subregions each composed of adjacent pixels; color determination for determining a color of the subregions of the first image region obtained by the division in the clustering; lane recognition for performing line component extraction for each group, considering the subregions determined to have the same color by the color determination as a single group, and recognizing a line position of the lane defined by the lane mark from the extracted line component; type determination which determines the type of the lane mark defining the lane recognized from the line component on the basis of a distribution state of the subregions, which exist in the vicinity of the line component, constituting the group from which the line component is extracted; and vehicle equipment control for controlling equipment of the vehicle according to a result of the lane recognition, wherein the vehicle equipment control controls the equipment of the vehicle at least according to the line position of the lane recognized by the lane recognition and the type of the lane mark defining the lane.
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13. A lane recognition apparatus for a vehicle which recognizes a lane along which a vehicle is traveling from a color image of a road acquired via an imaging device mounted on the vehicle, comprising:
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a lane mark detection image acquisition device which acquires a lane mark detection image, which is divided into a first image region composed of pixels having pixel values supposed to be image portions of a lane mark defining the lane and a second image region composed of other pixels, from the color image of the road acquired via the imaging device; a clustering device which performs clustering in which the first image region of the lane mark detection image is divided into subregions each composed of adjacent pixels; a color determination device which determines a color of the subregions of the first image region obtained by the division in the clustering; a lane recognition device which performs line component extraction for each group, considering the subregions determined to have the same color by the color determination device as a single group, and recognizes a line position of the lane defined by the lane mark from the extracted line component; a kernel setting device which sets a kernel having a size whose predetermined direction width is within a predetermined range greater than the predetermined direction width of the image portion of the lane mark for the color image acquired via the imaging device; a smoothing device which smoothes the acquired color image by filtering using the smoothing kernel of the size set by the kernel setting device; a change degree calculation device which calculates a change degree of a pixel value of each pixel of the acquired color image for the color image smoothed by the smoothing device; a pixel value replacement device which replaces a pixel value of a pixel, whose change degree is equal to or less than a predetermined value, of the acquired color image with a predetermined constant value; and a vehicle equipment control device which controls equipment of the vehicle according to a recognition result of the lane recognition device, wherein the lane mark detection image acquisition device acquires the color image, which is obtained by the replacement of the pixel values by the pixel value replacement device, as the lane mark detection image. - View Dependent Claims (14)
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15. A lane recognition apparatus for a vehicle which recognizes a lane along which a vehicle is traveling from a color image of a road acquired via an imaging device mounted on the vehicle, comprising:
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a lane mark detection image acquisition device which acquires a lane mark detection image, which is divided into a first image region composed of pixels having pixel values supposed to be image portions of a lane mark defining the lane and a second image region composed of other pixels, from the color image of the road acquired via the imaging device; a clustering device which performs clustering in which the first image region of the lane mark detection image is divided into subregions each composed of adjacent pixels; a color determination device which determines a color of the subregions of the first image region obtained by the division in the clustering; a lane recognition device which performs line component extraction for each group, considering the subregions determined to have the same color by the color determination device as a single group, and recognizes a line position of the lane defined by the lane mark from the extracted line component; a kernel setting device which sets a kernel having a size whose predetermined direction width is within a predetermined range greater than the predetermined direction width of the image portion of the lane mark for the color image acquired via the imaging device; a smoothing device which acquires a luminance image having pixel values representing luminance and a saturation image having pixel values representing saturation, which are calculated from color components of the acquired color image and smoothes the luminance image and the saturation image by filtering using the smoothing kernel of the size set by the kernel setting device; a change degree calculation device which calculates a change degree of a pixel value of each pixel of the acquired luminance image to the luminance image smoothed by the smoothing device and a change degree of a pixel value of each pixel of the acquired saturation image to the saturation image smoothed by the smoothing device; a pixel value replacement device which replaces a pixel value of a pixel, whose change degree calculated from the luminance image is equal to or less than a predetermined value and whose change degree calculated from the saturation image is equal to or less than a predetermined value, of the acquired color image with a predetermined constant value; and a vehicle equipment control device which controls equipment of the vehicle according to a recognition result of the lane recognition device, wherein the lane mark detection image acquisition device acquires the color image, which is obtained by the replacement of the pixel values by the pixel value replacement device, as the lane mark detection image. - View Dependent Claims (16)
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Specification