RANGE FINDER AND RANGE CORRECTION DEVICE CORRECTION PARAMETERS
First Claim
1. A range correction device comprising:
- an image acquiring unit that acquires stereo images formed of a plurality of images of a common region simultaneously captured by a plurality of cameras from different positions;
a collimating unit that collimates the stereo images acquired by the image acquiring unit, using a correction parameter for correcting a vertical displacement between the stereo images;
a disparity calculating unit that calculates distribution of horizontal disparities between the stereo images from the stereo images collimated by the collimating unit; and
an updating unit that calculates distribution of vertical displacements between the stereo images on the basis of the stereo images and the distribution of horizontal disparities calculated by the disparity calculating unit and updates the correction parameter on the basis of the distribution of the calculated vertical displacements.
1 Assignment
0 Petitions
Accused Products
Abstract
A range correction device includes an image acquiring unit, a collimating unit, a disparity calculating unit, and an updating unit. The image acquiring unit acquires stereo images formed of a plurality of simultaneously captured images. The collimating unit collimates the stereo images acquired by the image acquiring unit, using a correction parameter for correcting a vertical displacement between stereo images. The disparity calculating unit calculates a distribution of horizontal disparities between the stereo images from the stereo images collimated by the collimating unit. The updating unit calculates a distribution of vertical displacements between the stereo images on the basis of the stereo images and the distribution of horizontal disparities calculated by the disparity calculating unit and updates the correction parameter on the basis of the distribution of the calculated vertical displacements.
13 Citations
8 Claims
-
1. A range correction device comprising:
-
an image acquiring unit that acquires stereo images formed of a plurality of images of a common region simultaneously captured by a plurality of cameras from different positions; a collimating unit that collimates the stereo images acquired by the image acquiring unit, using a correction parameter for correcting a vertical displacement between the stereo images; a disparity calculating unit that calculates distribution of horizontal disparities between the stereo images from the stereo images collimated by the collimating unit; and an updating unit that calculates distribution of vertical displacements between the stereo images on the basis of the stereo images and the distribution of horizontal disparities calculated by the disparity calculating unit and updates the correction parameter on the basis of the distribution of the calculated vertical displacements. - View Dependent Claims (2, 3, 4)
-
-
5. A range finder comprising:
-
an image acquiring unit that acquires stereo images in which an object is imaged, the stereo images being formed of a plurality of images of a common region simultaneously captured by a plurality of cameras from different positions; a collimating unit that collimates the stereo images acquired by the image acquiring unit, using a correction parameter for correcting a vertical displacement between stereo images; a disparity calculating unit that calculates distribution of horizontal disparities between the stereo images from the stereo images collimated by the collimating unit; an updating unit that calculates distribution of vertical displacements between the stereo images on the basis of the stereo images and the distribution of horizontal disparities calculated by the disparity calculating unit and updates the correction parameter on the basis of the distribution of the calculated vertical displacements; and a distance calculating unit that calculates a distance to the object on the basis of the distribution of horizontal disparities calculated by the disparity calculating unit, and prepares and outputs distance information indicating the calculated distance. - View Dependent Claims (6, 7, 8)
-
Specification