IMAGE PROCESSING APPARATUS, SYSTEM, IMAGE PROCESSING METHOD, CALIBRATION METHOD, AND COMPUTER-READABLE RECORDING MEDIUM

• US 20160210733A1
• Filed: 01/15/2016
• Published: 07/21/2016
• Est. Priority Date: 01/20/2015
• Status: Active Grant

• Current Assignee: Ricoh Company Limited
• Original Assignee: Ricoh Company Limited
• Inventors: Kikuchi, Naoki, Saitoh, Kiichiroh
• Granted Patent: US 10,186,034 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G01B 11/2545 with one projection direction and several detection directions, e.g. stereo
• CPC Class Codes: G06T 2207/10012 Stereo images
• CPC Class Codes: G06T 2207/10028 Range image; Depth image; 3D point clouds
• CPC Class Codes: G06T 2207/20221 Image fusion; Image merging
• CPC Class Codes: G06T 3/4038 Image mosaicing, e.g. composing plane images from plane sub-images
• CPC Class Codes: G06T 7/593 from stereo images
• CPC Class Codes: G06T 7/85 Stereo camera calibration

Abstract

An image processing apparatus includes: an acquisition unit that acquires a plurality of first images that correspond to a plurality of spatial frequencies on a one-to-one basis; and a generation unit that generates a second image by synthesizing the first images acquired by the acquisition unit.

Claims

1. An image processing apparatus comprising:

an acquisition unit that acquires a plurality of first images that correspond to a plurality of spatial frequencies on a one-to-one basis; and

a generation unit that generates a second image by synthesizing the first images acquired by the acquisition unit.

2. The image processing apparatus according to claim 1, wherein each of the first images includes a spatial frequency component that corresponds thereto.

3. The image processing apparatus according to claim 1, wherein

the acquisition unit generates an original image by randomly determining pixel values of a plurality of pixels included in an image region having a size different from a size of each first image, and, by resizing the original image into the size of each first image, generates one of the first images that corresponds to one spatial frequency of the spatial frequencies.

4. The image processing apparatus according to claim 3, wherein

the size of the image region is smaller than the size of the first image, and

by enlarging the generated original image to the size of the first image, the acquisition unit generates one of the first images that corresponds to one spatial frequency of the spatial frequencies.

5. The image processing apparatus according to claim 1, wherein

the generation unit generates the second image by obtaining and setting, for each set of corresponding pixels included in the respective first images, an average of luminance values of these pixels in the respective first images as luminance values of corresponding pixels in the second image.

6. The image processing apparatus according to claim 1, further comprising:

an output controlling unit that controls output that is based on the second image.

7. A system comprising:

an image capturing unit that captures an image of a target object having the second image displayed thereon that is generated by the image processing apparatus according to claim 1; and

a calculation unit that, based on a captured image containing an image of the target object and on a distance between the image capturing unit and the target object, calculates correction parameters for use in correcting captured images obtained by image capturing with the image capturing unit.

8. An image processing method comprising:

acquiring a plurality of first images that correspond to a plurality of spatial frequencies on a one-to-one basis; and

generating a second image by synthesizing the first images acquired at the acquiring.

9. An image processing method comprising:

capturing, with an image capturing unit, images of a target object having the second image displayed thereon that is generated by the image processing method according to claim 8; and

based on captured images obtained by image capturing at the capturing and on a previously determined distance between the image capturing unit and the target object, calculating correction parameters for use in correcting captured images obtained by image capturing with the capturing unit.

10. A non-transitory computer-readable recording medium that contains a computer program that causes a computer to execute:

acquiring a plurality of first images that correspond to a plurality of spatial frequencies on a one-to-one basis; and

generating a second image by synthesizing the first images acquired at the acquiring.