Image processing device and image processing method for adjusting color of an image

Patent metadata

Field	Value
Publication number	US-11082629-B2
Application number	US-201716306134-A
Country	US
Kind code	B2
Filing date	May 8, 2017
Priority date	Jun 15, 2016
Publication date	Aug 3, 2021
Grant date	Aug 3, 2021

Abstract

An image processing device includes a control unit configured to control generation of a parameter related to adjustment of color corresponding to mutually different exposure times on the basis of a plurality of images photographed at the exposure times.

First claim

The invention claimed is:

1. An image processing device, comprising:
a processor configured to:
generate a first parameter related to adjustment of color corresponding to mutually different exposure times of a plurality of first exposure times, wherein the generation of the first parameter is based on a plurality of images photographed at the mutually different exposure times; and
generate a second parameter related to the adjustment of color based on the generated first parameter, wherein the second parameter corresponds to a second exposure time different from the plurality of first exposure times.

2. The image processing device according to claim 1 , wherein the first parameter related to the adjustment of color is at least one of a parameter related to color reproduction or a white balance gain for adjustment of white balance.

3. The image processing device according to claim 1 , wherein
the plurality of images is obtained through a first photographing process, and
an exposure timing of the plurality of images is synchronized with a determined phase of a flickering component in a flickering light source.

4. The image processing device according to claim 3 , wherein the determined phase of the flickering component is a peak of the flickering component.

5. The image processing device according to claim 3 , wherein an exposure timing for a second photographing process is synchronized with the determined phase after the first photographing process.

6. The image processing device according to claim 5 , wherein the processor is further configured to apply a third parameter related to the adjustment of color corresponding to a third exposure time set in the second photographing process based the generated first parameter.

7. The image processing device according to claim 1 , wherein the processor is further configured to generate the first parameter related to the adjustment of color corresponding to each exposure time based on two images of the plurality of images photographed at the mutually different exposure times.

8. The image processing device according to claim 1 , wherein the processor is further configured to control a memory to store the generated first parameter.

9. The image processing device according to claim 1 , wherein the plurality of first exposure times is set in accordance with kinds of flickering light sources.

10. The image processing device according to claim 1 , wherein the processor is further configured to control the generation of the first parameter is in accordance with a method suitable for a kind of flickering light source.

11. The image processing device according to claim 1 , comprising an imaging unit configured to capture the plurality of images.

12. An image processing method, comprising:
generating, by a processor, a first parameter related to adjustment of color corresponding to mutually different exposure times of a plurality of first exposure times, wherein the generation of the first parameter is based on a plurality of images photographed at the mutually different exposure times; and
generating, by the processor, a second parameter related to the adjustment of color based on the generated first parameter, wherein the second parameter corresponds to a second exposure time different from the plurality of first exposure times.

13. A non-transitory computer-readable medium having stored thereon, computer-executable instructions which, when executed by a computer, cause the computer to execute operations, the operations comprising:
generating a first parameter related to adjustment of color corresponding to mutually different exposure times of a plurality of first exposure times, wherein the generation of the first parameter is based on a plurality of images photographed at the mutually different exposure times; and
generating a second parameter related to the adjustment of color based on the generated first parameter, wherein the second parameter corresponds to a second exposure time different from the plurality of first exposure times.

Assignees

• Sony Corp

Inventors

• Izuta Osamu
• Suzuki Satoko
• Honda Yutaro
• Hirasawa Syouei
• Kasai Daisuke

Classifications

• H04N25/13

  characterised by the spectral characteristics of the filter elements · CPC title

• H04N23/745 Primary

  Detection of flicker frequency or suppression of flicker wherein the flicker is caused by illumination, e.g. due to fluorescent tube illumination or pulsed LED illumination · CPC title

• H04N23/10

  for generating image signals from different wavelengths · CPC title

• H04N23/12

  with one sensor only · CPC title

• H04N23/73

  by influencing the exposure time · CPC title