IP Library › Granted Patent US 10,778,948
Granted Patent B2
US 10,778,948 · App. 16/601,821 · Granted Sep 15, 2020

Imaging apparatus and endoscope apparatus

Inventors: Hiroshi Sakai (Sagamihara, JP); Shinichi Imade (Iruma, JP); Hideaki Takahashi (Tokyo, JP)
Assignee: OLYMPUS CORPORATION
H04N9/646H04N9/04551
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Quick Facts
Patent No.
US 10,778,948
App. No.
16/601,821
Granted
Sep 15, 2020
Kind
B2
Abstract

In an imaging apparatus, a pupil division optical system includes a first pupil transmitting light of a first wavelength band and a second pupil transmitting light of a second wavelength band different from the first wavelength band. An imaging device is configured to capture an image of light transmitted through the pupil division optical system and a first color filter having a first transmittance characteristic and light transmitted through the pupil division optical system and a second color filter having a second transmittance characteristic partially overlapping the first transmittance characteristic, and output the captured image. A processor is configured to generate a monochrome correction image or a correction image by correcting a value that is based on components overlapping between the first transmittance characteristic and the second transmittance characteristic for the captured image.

Claims (54)

1. An imaging apparatus comprising:

a pupil division optical system including a first pupil transmitting light of a first wavelength band and a second pupil transmitting light of a second wavelength band different from the first wavelength band;

an imaging device configured to capture an image of light transmitted through the pupil division optical system and a first color filter having a first transmittance characteristic and light transmitted through the pupil division optical system and a second color filter having a second transmittance characteristic partially overlapping the first transmittance characteristic, and output the captured image;

a processor configured to generate a monochrome correction image or a correction image by correcting a value that is based on components overlapping between the first transmittance characteristic and the second transmittance characteristic for the captured image, the monochrome correction image including a value that is based on one of the first transmittance characteristic and the second transmittance characteristic, the correction image including a value that is based on the first transmittance characteristic and a value that is based on the second transmittance characteristic; and

a display configured to display the monochrome correction image generated by the processor or display the monochrome correction image generated by processing the correction image.

2. An imaging apparatus comprising:

a pupil division optical system including a first pupil transmitting light of a first wavelength band and a second pupil transmitting light of a second wavelength band different from the first wavelength band;

an imaging device configured to capture an image of light transmitted through the pupil division optical system and a first color filter having a first transmittance characteristic and light transmitted through the pupil division optical system and a second color filter having a second transmittance characteristic partially overlapping the first transmittance characteristic, and output the captured image; and

a processor configured to:

generate a monochrome correction image or a correction image by correcting a value that is based on components overlapping between the first transmittance characteristic and the second transmittance characteristic for the captured image, the monochrome correction image including a value that is based on one of the first transmittance characteristic and the second transmittance characteristic, the correction image including a value that is based on the first transmittance characteristic and a value that is based on the second transmittance characteristic; and

output the monochrome correction image to a display or output the monochrome correction image generated by processing the correction image to the display.

3. The imaging apparatus according to claim 1 ,

wherein the processor is configured to generate at least one of a first monochrome correction image and a second monochrome correction image,

the first monochrome correction image is the monochrome correction image generated by correcting a value that is based on components overlapping between the first transmittance characteristic and the second transmittance characteristic for the captured image having components that are based on the first transmittance characteristic, and

the second monochrome correction image is the monochrome correction image generated by correcting a value that is based on components overlapping between the first transmittance characteristic and the second transmittance characteristic for the captured image having components that are based on the second transmittance characteristic.

4. The imaging apparatus according to claim 2 ,

wherein the processor is configured to generate at least one of a first monochrome correction image and a second monochrome correction image,

the first monochrome correction image is the monochrome correction image generated by correcting a value that is based on components overlapping between the first transmittance characteristic and the second transmittance characteristic for the captured image having components that are based on the first transmittance characteristic, and

the second monochrome correction image is the monochrome correction image generated by correcting a value that is based on components overlapping between the first transmittance characteristic and the second transmittance characteristic for the captured image having components that are based on the second transmittance characteristic.

5. The imaging apparatus according to claim 3 ,

wherein the processor is configured to generate at least one of the first monochrome correction image and the second monochrome correction image in accordance with an instruction from a user.

6. The imaging apparatus according to claim 4 ,

wherein the processor is configured to generate at least one of the first monochrome correction image and the second monochrome correction image in accordance with an instruction from a user.

7. The imaging apparatus according to claim 3 ,

wherein the processor is configured to generate at least one of the first monochrome correction image and the second monochrome correction image in accordance with a result of analyzing the captured image.

8. The imaging apparatus according to claim 4 ,

wherein the processor is configured to generate at least one of the first monochrome correction image and the second monochrome correction image in accordance with a result of analyzing the captured image.

9. The imaging apparatus according to claim 3 ,

wherein the processor is configured to generate at least one of the first monochrome correction image and the second monochrome correction image in accordance with a histogram of the captured image.

10. The imaging apparatus according to claim 4 ,

wherein the processor is configured to generate at least one of the first monochrome correction image and the second monochrome correction image in accordance with a histogram of the captured image.

11. The imaging apparatus according to claim 3 ,

wherein the processor is configured to generate at least one of the first monochrome correction image and the second monochrome correction image in accordance with contrast of the captured image.

12. The imaging apparatus according to claim 4 ,

wherein the processor is configured to generate at least one of the first monochrome correction image and the second monochrome correction image in accordance with contrast of the captured image.

13. The imaging apparatus according to claim 3 ,

wherein the processor is configured to generate at least one of the first monochrome correction image and the second monochrome correction image in accordance with spectral characteristics of a subject.

14. The imaging apparatus according to claim 4 ,

wherein the processor is configured to generate at least one of the first monochrome correction image and the second monochrome correction image in accordance with spectral characteristics of a subject.

15. The imaging apparatus according to claim 1 ,

wherein the processor is configured to generate a first monochrome correction image and a second monochrome correction image in parallel with analysis of the captured image,

the first monochrome correction image is the monochrome correction image generated by correcting a value that is based on components overlapping between the first transmittance characteristic and the second transmittance characteristic for the captured image having components that are based on the first transmittance characteristic,

the second monochrome correction image is the monochrome correction image generated by correcting a value that is based on components overlapping between the first transmittance characteristic and the second transmittance characteristic for the captured image having components that are based on the second transmittance characteristic, and

the processor is configured to select at least one of the first monochrome correction image and the second monochrome correction image in accordance with a result of analyzing the captured image.

16. The imaging apparatus according to claim 2 ,

wherein the processor is configured to generate a first monochrome correction image and a second monochrome correction image in parallel with analysis of the captured image,

the first monochrome correction image is the monochrome correction image generated by correcting a value that is based on components overlapping between the first transmittance characteristic and the second transmittance characteristic for the captured image having components that are based on the first transmittance characteristic,

the second monochrome correction image is the monochrome correction image generated by correcting a value that is based on components overlapping between the first transmittance characteristic and the second transmittance characteristic for the captured image having components that are based on the second transmittance characteristic, and

the processor is configured to select at least one of the first monochrome correction image and the second monochrome correction image in accordance with a result of analyzing the captured image.

17. The imaging apparatus according to claim 1 ,

wherein the processor is configured to generate the monochrome correction image by processing the correction image.

18. The imaging apparatus according to claim 2 ,

wherein the processor is configured to generate the monochrome correction image by processing the correction image.

19. An endoscope apparatus comprising the imaging apparatus according to claim 1 .

Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 7, 2023
From: OLYMPUS CORPORATION
To: EVIDENT CORPORATION
Reel/Frame 062902/0423 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Oct 15, 2019
From: SAKAI, HIROSHI; IMADE, SHINICHI; TAKAHASHI, HIDEAKI
To: OLYMPUS CORPORATION
Reel/Frame 050715/0152 →