Image processing apparatus
First Claim
1. an image processor comprising:
- an imaging unit that captures an image of a target area;
a face region extraction unit that extracts a face region, which corresponds to a face of a person, from the image captured by the imaging unit;
a distance estimation unit that estimates distance from the imaging unit to each position of the image captured by the imaging unit;
a distance distribution calculation unit that sets up a distance estimation area, in the image captured, below the face region by a predetermined distance and calculates distance distribution from the imaging unit in the distance estimation area, using the distance estimated by the distance estimation unit; and
a wheelchair presence determination unit that determines whether a person corresponding to the face region extracted is sitting in a wheelchair, by comparing the distance from the imaging unit of the face region estimated by the distance estimation unit with the distance distribution in the distance estimation area.
1 Assignment
0 Petitions
Accused Products
Abstract
An image processor includes an imaging unit that captures an image of a target area, a face region extraction unit that extracts a face region, which corresponds to a face of a person, from the image captured by the imaging unit, a distance estimation unit that estimates a distance from the imaging unit to each position of the image captured by the imaging unit, a distance distribution calculation unit that sets up a distance estimation area below the face region by a predetermined distance and calculates distance distribution from the imaging unit in the distance estimation area, using the distance estimated by the distance estimation unit, and a wheelchair presence determination unit that determines whether a person corresponding to the face region extracted is sitting in a wheelchair, by comparing the distance from the imaging unit of the face region estimated by the distance estimation unit with the distance distribution in the distance estimation area.
19 Citations
8 Claims
-
1. an image processor comprising:
-
an imaging unit that captures an image of a target area;
a face region extraction unit that extracts a face region, which corresponds to a face of a person, from the image captured by the imaging unit;
a distance estimation unit that estimates distance from the imaging unit to each position of the image captured by the imaging unit;
a distance distribution calculation unit that sets up a distance estimation area, in the image captured, below the face region by a predetermined distance and calculates distance distribution from the imaging unit in the distance estimation area, using the distance estimated by the distance estimation unit; and
a wheelchair presence determination unit that determines whether a person corresponding to the face region extracted is sitting in a wheelchair, by comparing the distance from the imaging unit of the face region estimated by the distance estimation unit with the distance distribution in the distance estimation area. - View Dependent Claims (2, 3, 4)
-
-
5. An image processor comprising:
-
a first imaging unit that captures an image of in a target area;
a second imaging unit and a third imaging unit which capture respective images of the target area, wherein the second imaging unit is spaced horizontally from the third imaging unit by a predetermined distance;
a face region extraction unit that extracts a face region, which corresponds to a face of a person, from the image captured by the first imaging unit;
a stereo calculation unit that estimates a distance from the first imaging unit to each position of the image captured by the first imaging unit by a stereo method, based on the respective images captured by the second imaging unit and the third imaging unit;
a distance distribution calculation unit that sets up a distance estimation area below the human face region by a predetermined distance and calculates distance distribution from the first imaging unit in the distance estimation area, using the distance estimated by the stereo calculation unit; and
a wheelchair presence determination unit that determines whether a person having the face region is sitting in a wheelchair, by comparing the distance from the first imaging unit of the face region estimated by the stereo calculation unit with the distance distribution in the distance estimation area. - View Dependent Claims (6)
-
-
7. An image processor comprising:
-
a first imaging unit that captures an image of a target area;
a second imaging unit that captures an image of the target area, wherein the second imaging unit is spaced horizontally from the first imaging unit by a predetermined distance;
a face region extraction unit that extracts a face region, which corresponds to a face of a person, from the image captured by the first imaging unit;
a stereo calculation unit that estimates a distance from the first imaging unit to each position of the image captured by the first imaging unit by a stereo method, based on the respective images captured by the first imaging unit and the second imaging unit;
a distance distribution calculation unit that sets up a distance estimation area below the human face region by a predetermined distance and calculates distance distribution from the first imaging unit in the distance estimation area, using the distance estimated by the stereo calculation unit; and
a wheelchair presence determination unit that determines whether a person having the face region is sitting in a wheelchair, by comparing the distance from the first imaging unit of the face region estimated by the stereo calculation unit with the distance distribution in the distance estimation area. - View Dependent Claims (8)
-
Specification