Graphic recognition device, graphic recognition method, and graphic recognition program
First Claim
1. A graphic recognition device for recognizing a graphic in an image photographed by a photographic device, the graphic recognition device comprising:
- a shadow area calculating unit for calculating an area of a shadow of an object in the image;
an area graphic recognizing unit for determining whether or not a predefined specific graphic exists in the image individually for an inside and an outside of the area of the shadow calculated by the shadow area calculating unit; and
a graphic recognizing unit for determining whether or not the specific graphic exists in the image based on a result determined by the area graphic recognizing unit,wherein the shadow area calculating unit calculates the area of the shadow based on light source location information indicating a location of a light source, and object location information indicating an actual location of a plurality of points forming a contour of an object forming the shadow.
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Accused Products
Abstract
A graphic recognition device, method, and recognition program recognize graphics without being influenced by an image shadow area. Image input unit acquires the image of the outside environment of a vehicle using a vehicle mounted camera. A light source location information acquiring unit calculates location of a light source such as the sun using the acquired image. User vehicle shape acquiring unit and other vehicle shape acquiring unit generate shape information for the vehicles indicating the location of points forming vehicle contours. Shadow area calculating unit calculates, on the basis of both vehicles'"'"' shape information, the object shape information and the light source location information, the location coordinates of the shadow area, and converts the location coordinates into two-dimensional coordinates to the shadow/non-shadow area emphasis flag recognizing unit, which recognizes the flag in the image by judging the presence/absence of the recognition object in each shadow and non-shadow area specified.
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Citations
29 Claims
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1. A graphic recognition device for recognizing a graphic in an image photographed by a photographic device, the graphic recognition device comprising:
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a shadow area calculating unit for calculating an area of a shadow of an object in the image; an area graphic recognizing unit for determining whether or not a predefined specific graphic exists in the image individually for an inside and an outside of the area of the shadow calculated by the shadow area calculating unit; and a graphic recognizing unit for determining whether or not the specific graphic exists in the image based on a result determined by the area graphic recognizing unit, wherein the shadow area calculating unit calculates the area of the shadow based on light source location information indicating a location of a light source, and object location information indicating an actual location of a plurality of points forming a contour of an object forming the shadow. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A graphic recognition device for recognizing a graphic in an image photographed by a photographic device, the graphic recognition device comprising:
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a shadow area calculating unit for calculating an area of a shadow of an object in the image; an area graphic recognizing unit for determining whether or not a predefined specific graphic exists in the image individually for an inside and an outside of the area of the shadow calculated by the shadow area calculating unit; and a graphic recognizing unit for determining whether or not the specific graphic exists in the image based on a result determined by the area graphic recognizing unit, wherein the area graphic recognizing unit determines whether or not the specific graphic exists individually for the inside and the outside of the area of the shadow based on a statistical learning using neural network.
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12. A graphic recognition device for recognizing a graphic in an image photographed by a photographic device, the graphic recognition device comprising:
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a shadow area calculating unit for calculating an area of a shadow of an object in the image; an area graphic recognizing unit for determining whether or not a predefined specific graphic exists in the image individually for an inside and an outside of the area of the shadow calculated by the shadow area calculating unit; and a graphic recognizing unit for determining whether or not the specific graphic exists in the image based on a result determined by the area graphic recognizing unit, wherein the area graphic recognizing unit judges presence/absence of a periodicity of a specific pattern for the inside and the outside of the area of the shadow if the specific graphic has periodicity.
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13. A graphic recognition device for recognizing a graphic in an image photographed by a photographic device, the graphic recognition device comprising:
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a shadow area calculating unit for calculating an area of a shadow of an object in the image; an area graphic recognizing unit for determining whether or not a predefined specific graphic exists in the image individually for an inside and an outside of the area of the shadow calculated by the shadow area calculating unit; and a graphic recognizing unit for determining whether or not the specific graphic exists in the image based on a result determined by the area graphic recognizing unit, wherein the area graphic recognizing unit outputs the determination result for the inside and the outside of the area of the shadow in numerical values; and the graphic recognizing unit determines whether or not the specific graphic exists in the image based on a magnitude relationship between the determination result for each area output by the area graphic recognizing unit and a predefined threshold value. - View Dependent Claims (14)
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15. A graphic recognition method for recognizing a graphic in an image photographed by a photographic device, the method comprising:
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calculating an area of a shadow of an object in the image; determining whether or not a predefined specific graphic exists in the image individually for an inside and an outside of the area of the shadow calculated in calculating the area of the shadow of the object in the image; and determining whether or not a specific graphic exists in the image based on a result determined in determining whether or not the predefined specific graphic exists in the image individually for the inside and the outside of the area of the shadow, wherein in calculating the area of the shadow of the object in the image, the area of the shadow is calculated based on light source location information indicating a location of a light source, and object location information indicating an actual location of a plurality of points forming a contour of the body forming the shadow. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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26. A graphic recognition method for recognizing a graphic in an image photographed by a photographic device, the method comprising:
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calculating an area of a shadow of an object in the image; determining whether or not a predefined specific graphic exists in the image individually for an inside and an outside of the area of the shadow calculated in calculating the area of the shadow of the object in the image; and determining whether or not a specific graphic exists in the image based on a result determined in determining whether or not the predefined specific graphic exists in the image individually for the inside and the outside of the area of the shadow, wherein in determining whether or not the predefined specific graphic exists in the image, whether or not the specific graphic exists is determined individually for the inside and the outside of the area of the shadow based on a statistical learning using neural network.
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27. A graphic recognition method for recognizing a graphic in an image photographed by a photographic device, the method comprising:
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calculating an area of a shadow of an object in the image; determining whether or not a predefined specific graphic exists in the image individually for an inside and an outside of the area of the shadow calculated in calculating the area of the shadow of the object in the image; and determining whether or not a specific graphic exists in the image based on a result determined in determining whether or not the predefined specific graphic exists in the image individually for the inside and the outside of the area of the shadow, wherein in determining whether or not the predefined specific graphic exists in the image, presence/absence of a periodicity of a specific pattern is judged for the inside and the outside of the area of the shadow if the specific graphic has periodicity.
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28. A graphic recognition method for recognizing a graphic in an image photographed by a photographic device, the method comprising:
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calculating an area of a shadow of an object in the image; determining whether or not a predefined specific graphic exists in the image individually for an inside and an outside of the area of the shadow calculated in calculating the area of the shadow of the object in the image; and determining whether or not a specific graphic exists in the image based on a result determined in determining whether or not the predefined specific graphic exists in the image individually for the inside and the outside of the area of the shadow, wherein in determining whether or not the predefined specific graphic exists in the image, the determination result for the inside and the outside of the area of the shadow is output in numerical values; and in determining whether or not a specific graphic exists in the image, whether or not the specific graphic exists in the image is determined based on a magnitude relationship between the determination result for each area output in determining whether or not the predefined specific graphic exists in the image and a predefined threshold value. - View Dependent Claims (29)
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Specification