Position-information specifying method, position-information specifying device, and position-information specifying program
First Claim
1. A position-information specifying method comprising:
- a step for obtaining an object image photographed by a first photographing means mounted in a movable body having a predetermined distortion characteristic, a predetermined distortion being caused on the object image due to the predetermined distortion characteristic;
a step for obtaining a first scale plate image corresponding to an image obtained when a first scale plate, which has a first scale and is arranged so as to be opposed to a second photographing means having the predetermined distortion characteristic at a first distance, is photographed by the second photographing means;
a step for overlapping the first scale plate image and the object image with each other;
a step for measuring an image-size of a first reference object, which is appeared on the object image and has a first predetermined size, by using the first scale of the first scale plate image; and
a step for calculating a first target distance between the first photographing means and the first reference object, based on the image-size of the first reference object, the first predetermined size, and the first distance.
1 Assignment
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Accused Products
Abstract
[Object ]
To provide a position-information specifying method for accurately specifying a position and a velocity of a photographed object.
[Solution ]
A position-information specifying method includes; a step for obtaining an object image 3 photographed by a monitor camera 2 having a predetermined distortion characteristic, a predetermined distortion being caused on the object image 3 due to the predetermined distortion characteristic; a step for obtaining a first scale plate image 42 corresponding to an image obtained when a first scale plate 4 having a first scale 41 is arranged at a first distance X is photographed by the monitor camera 2; a step for overlapping the first scale plate image 42 and the object image 3 with each other; a step for measuring an image-size A of a first reference object 5, which is appeared on the object image 3 and has a first predetermined size B, by using the first scale 41 of the first scale plate image 42; and a step for calculating a first target distance Y between the monitor camera 2 and the first reference object 5, based on the image-size A of the first reference object 5, the first predetermined size B, and the first distance X.
20 Citations
20 Claims
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1. A position-information specifying method comprising:
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a step for obtaining an object image photographed by a first photographing means mounted in a movable body having a predetermined distortion characteristic, a predetermined distortion being caused on the object image due to the predetermined distortion characteristic; a step for obtaining a first scale plate image corresponding to an image obtained when a first scale plate, which has a first scale and is arranged so as to be opposed to a second photographing means having the predetermined distortion characteristic at a first distance, is photographed by the second photographing means; a step for overlapping the first scale plate image and the object image with each other; a step for measuring an image-size of a first reference object, which is appeared on the object image and has a first predetermined size, by using the first scale of the first scale plate image; and a step for calculating a first target distance between the first photographing means and the first reference object, based on the image-size of the first reference object, the first predetermined size, and the first distance. - View Dependent Claims (2, 3, 4, 5, 6, 7, 18)
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8. A position-information specifying device comprising:
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a storing unit configured to store an object image photographed by a first photographing means mounted in a movable body having a predetermined distortion characteristic, a predetermined distortion being caused on the object image due to the predetermined distortion characteristic;
a first scale plate image corresponding to an image obtained when a first scale plate, which has a first scale and is arranged so as to be opposed to a second photographing means having the predetermined distortion characteristic at a first distance, is photographed by the second photographing means; and
first reference object information with respect to a first reference object having a first predetermined size;an overlapping unit configured to overlap the first scale plate image and the object image with each other; a specifying unit configured to specify the first reference object, which is appeared on the object image, while referring to the first reference object information; a measuring unit configured to measure an image-size of the specified first reference object by using the first scale of the first scale plate image; and a calculating unit configured to calculate a first target distance between the first photographing means and the first reference object, based on the image-size of the first reference object, the first predetermined size, and the first distance. - View Dependent Claims (9, 10, 11, 12, 19)
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13. A computer readable medium storing on a non-transitory, non-volatile memory instructions executable by a computer, wherein execution of the instructions implements a position-information specifying method comprising storing an object image photographed by a first photographing means mounted in a movable body having a predetermined distortion characteristic, a predetermined distortion being caused on the object image due to the predetermined distortion characteristic;
- a first scale plate image corresponding to an image obtained when a first scale plate, which has a first scale and is arranged so as to be opposed to a second photographing means having the predetermined distortion characteristic at a first distance, is photographed by the second photographing means; and
first reference object information with respect to a first reference object having a first predetermined size;a step for overlapping the first scale plate image and the object image with each other; a step for specifying the first reference object, which is appeared on the object image, while referring to the first reference object information; a step for measuring an image-size of the specified first reference object by using the first scale of the first scale plate image; and a step for calculating a first target distance between the first photographing means and the first reference object, based on the image-size of the first reference object, the first predetermined size, and the first distance. - View Dependent Claims (14, 15, 16, 17, 20)
- a first scale plate image corresponding to an image obtained when a first scale plate, which has a first scale and is arranged so as to be opposed to a second photographing means having the predetermined distortion characteristic at a first distance, is photographed by the second photographing means; and
Specification