Image processing apparatus and image processing method
First Claim
1. An image processing apparatus that extracts a display image from a portion of an image captured by a wide angle camera, the wide angle camera being offset from a vehicle center line in a longitudinal direction, the wide angle camera causing a degree of size reduction of an object displayed within a captured image by the wide angle camera, the degree of size reduction of the object increasing as a distance between the object and a center of the captured image increases, the image processing apparatus comprising:
- a control circuit that extracts the display image from the captured image,wherein;
the control circuit includes an extraction determination portion,the extraction determination portion determines an extraction position of the display image within the captured image according to a distance of a center position of the display image from the vehicle center line and the degree of size reduction of the object,the center position of the display image is located as close as possible to the vehicle center line in a horizontal direction,the degree of size reduction of the object is represented by a reduction in size of a pixel at a specific position within the display image, and the reduction in size of the pixel is equal to or less than a first predetermined value,the extraction determination portion determines the extraction position of the display image within the captured image according to a state of an appearance of a subject vehicle in the display image, andthe extraction determination portion determines the extraction position of the display image within the captured image, and a ratio of the appearance of the subject vehicle within the display image is equal to or less than a second predetermined value.
1 Assignment
0 Petitions
Accused Products
Abstract
An image processing apparatus extracts, as a display image, a part of an image captured by a wide angle camera, the wide angle camera being arranged at a position deviated from a vehicle center line that is a center line of a vehicle in a longitudinal direction and being configured to increase a degree of size reduction of an object as being farther from a center of the captured image. The image processing apparatus includes a control circuit that extracts the display image. The control circuit includes an extraction determination portion. The extraction determination portion determines an extraction position of the display image in the captured image according to a center position of the display image to the vehicle center line and the degree of size reduction of the object represented at a pixel of a specific position in the display image.
-
Citations
9 Claims
-
1. An image processing apparatus that extracts a display image from a portion of an image captured by a wide angle camera, the wide angle camera being offset from a vehicle center line in a longitudinal direction, the wide angle camera causing a degree of size reduction of an object displayed within a captured image by the wide angle camera, the degree of size reduction of the object increasing as a distance between the object and a center of the captured image increases, the image processing apparatus comprising:
-
a control circuit that extracts the display image from the captured image, wherein; the control circuit includes an extraction determination portion, the extraction determination portion determines an extraction position of the display image within the captured image according to a distance of a center position of the display image from the vehicle center line and the degree of size reduction of the object, the center position of the display image is located as close as possible to the vehicle center line in a horizontal direction, the degree of size reduction of the object is represented by a reduction in size of a pixel at a specific position within the display image, and the reduction in size of the pixel is equal to or less than a first predetermined value, the extraction determination portion determines the extraction position of the display image within the captured image according to a state of an appearance of a subject vehicle in the display image, and the extraction determination portion determines the extraction position of the display image within the captured image, and a ratio of the appearance of the subject vehicle within the display image is equal to or less than a second predetermined value. - View Dependent Claims (2, 3, 4, 5, 6, 8)
-
-
7. An image processing method that extracts a display image from a portion of an image captured by a wide angle camera, the wide angle camera being offset from a vehicle center line in a longitudinal direction, the wide angle camera causing a degree of size reduction of an object displayed within a captured image by the wide angle camera, the degree of size reduction of the object increasing as a distance between the object and a center of the captured image increases, the image processing method comprising:
-
an extraction determination step that determines an extraction position of the display image within the captured image according to a distance of a center position of the display image from the vehicle center line and the degree of size reduction of the object; and a distortion correcting step that performs distortion correction of the captured image, wherein; the center position of the display image is located as close as possible to the vehicle center line in a horizontal direction, the degree of size reduction of the object is represented by a reduction in size of a pixel at a specific position within the display image, and the reduction in size of the pixel is equal to or less than a first predetermined value, the extraction determination step determines the extraction position of the display image within the captured image according to a state of an appearance of a subject vehicle in the display image, and the extraction determination step determines the extraction position of the display image within the captured image, and a ratio of the appearance of the subject vehicle within the display image is equal to or less than a second predetermined value.
-
-
9. An image processing apparatus that extracts a display image from a portion of an image captured by a wide angle camera, the wide angle camera being offset from a vehicle center line in a longitudinal direction, the wide angle camera causing a degree of size reduction of an object displayed within a captured image by the wide angle camera, the degree of size reduction of the object increasing as a distance between the object and a center of the captured image increases, the image processing apparatus comprising:
-
a control circuit that extracts the display image from the captured image, wherein; the control circuit includes an extraction determination portion, the extraction determination portion determines an extraction position of the display image within the captured image according to a distance of a center position of the display image from the vehicle center line and the degree of size reduction of the object, the center position of the display image is located as close as possible to the vehicle center line in a horizontal direction, the degree of size reduction of the object is represented by a reduction in size of a pixel at a specific position within the display image, and the reduction in size of the pixel is equal to or less than a first predetermined value, the extraction determination portion determines appearance rate of the subject vehicle, the appearance rate being a ratio of an appearance of the subject vehicle within the display image, and the extraction determination portion determines the extraction position in the display image within the captured image so that the appearance rate of the subject vehicle is equal to or less than a second predetermined value.
-
Specification