GRAPHIC RECOGNITION DEVICE, GRAPHIC RECOGNITION METHOD, AND GRAPHIC RECOGNITION PROGRAM
1 Assignment
0 Petitions
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.
-
Citations
71 Claims
-
1-35. -35. (canceled)
-
36. 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. - View Dependent Claims (37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52)
-
-
53. A graphic recognition means for recognizing a graphic in an image photographed by a photographic device, the graphic recognition means comprising:
-
a shadow area calculating means for calculating an area of a shadow of an object in the image; an area graphic recognizing means 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 means; and a graphic recognizing means for determining whether or not the specific graphic exists in the image based on a result determined by the area graphic recognizing means.
-
-
54. A graphic recognition method for recognizing a graphic in an image photographed by a photographic device, the method comprising:
-
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. - View Dependent Claims (55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70)
-
-
71. A computer readable medium storing a graphic recognition program for recognizing a graphic in an image photographed by a photographic device, the program causing the computer to execute:
-
shadow area calculating process of calculating an area of a shadow of an object in the image; area graphic recognition process of 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 the shadow area calculating process; and graphic recognition process of determining whether or not a specific graphic exists in the image based on a result determined in the area graphic recognition process.
-
Specification