Method for performing out-focus using depth information and camera using the same
US-2018041748-A1 · Feb 8, 2018 · US
Imaging device
US10026158B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10026158-B2 |
| Application number | US-201515500741-A |
| Country | US |
| Kind code | B2 |
| Filing date | Aug 17, 2015 |
| Priority date | Sep 26, 2014 |
| Publication date | Jul 17, 2018 |
| Grant date | Jul 17, 2018 |
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Abstract
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The present invention addresses the problem of providing an imaging device that prevents mismatching in image matching for parallax calculation even if the sharpnesses of an end part and center part of a processing area differ. An imaging device 1 according to the present invention is provided with a means for equalizing the sharpnesses of the processing areas of a reference image and a comparison image.
First claim
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The invention claimed is: 1. An imaging device that calculates a distance to an object based on images obtained by simultaneously photographing the object by a plurality of cameras, the imaging device comprising: processing region setting means for setting a processing region on each of the images; sharpness equalization means for equalizing sharpness in the processing region of each of the images, the processing region being set by the processing region setting means; parallax calculation means for calculating a parallax from the processing region of each of the images, the sharpness in the processing region being equalized by the sharpness equalization means; and distance calculation means for calculating a distance to the object based on the parallax calculated by the parallax calculation means. 2. The imaging device according to claim 1 , wherein the sharpness equalization means uses a blur filter to reduce the sharpness so that the sharpness in the processing region with a high sharpness is reduced to match the sharpness in the processing region with a low sharpness. 3. The imaging device according to claim 1 , wherein the sharpness equalization means uses a sharpening filter to increase the sharpness so that the sharpness in the processing region with a low sharpness is increased to match the sharpness in the processing region with a high sharpness. 4. The imaging device according to claim 1 , further comprising image shrinking means for performing shrinking processing on the processing region of which sharpness is equalized by the sharpness equalization means at a ratio corresponding to the equalized sharpness. 5. The imaging device according to claim 1 , wherein the processing region setting means sets the plurality of photographed images in a plurality of processing regions, respectively, in a longitudinal direction. 6. The imaging device according to claim 5 , wherein the processing region setting means sets a processing region including an optical axis and a plurality of processing regions other than the processing region, the sharpness equalization means equalizes the sharpness so that the sharpness in the processing region including the optical axis is higher than the sharpness in the processing regions other than the processing region.
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- What does patent US10026158B2 cover?
- The present invention addresses the problem of providing an imaging device that prevents mismatching in image matching for parallax calculation even if the sharpnesses of an end part and center part of a processing area differ. An imaging device 1 according to the present invention is provided with a means for equalizing the sharpnesses of the processing areas of a reference image and a compa…
- Who is the assignee on this patent?
- Hitachi Automotive Systems Ltd
- What technology area does this patent fall under?
- Primary CPC classification G06T5/003. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Jul 17 2018 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 4 related publications on this page (citations in our corpus or others sharing the same primary CPC).