# US 12,192,602 B2 · Imaging control device, operation method and program of imaging control device, and imaging device

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- Number: US 12,192,602 B2
- Document ID: US12192602B2
- Status: Granted
- Kind: B2
- Application number: 18/152,117
- Filed: 2023-01-09
- Published: 2023-06-01
- Granted: 2025-01-07
- Earliest claimed: 2020-07-29
- Assignees: FUJIFILM Corporation
- Applicants: FUJIFILM Corporation
- Inventors: Shinichi Shimotsu; Masahiko Sugimoto; Tetsuya Fujikawa; Toshihiro Aoi
- Web page: https://patentgrep.com/patent/US12192602B2

## CPC

- H04N 23/11: for generating image signals from visible and infrared light wavelengths
- G03B 11/00: Filters or other obturators specially adapted for photographic purposes
- G03B 15/00: Special procedures for taking photographs; Apparatus therefor
- G06T 5/50: using two or more images, e.g. averaging or subtraction
- G06V 10/60: relating to illumination properties, e.g. using a reflectance or lighting model
- G06V 10/761: {Proximity, similarity or dissimilarity measures}
- H04N 23/12: with one sensor only
- H04N 23/125: {Colour sequential image capture, e.g. using a colour wheel}
- H04N 23/55: Optical parts specially adapted for electronic image sensors; Mounting thereof
- H04N 23/69: Control of means for changing angle of the field of view, e.g. optical zoom objectives or electronic zooming
- H04N 23/81: for suppressing or minimising disturbance in the image signal generation
- G06T 2207/20224: Image subtraction
- H04N 25/61: the noise originating only from the lens unit, e.g. flare, shading, vignetting or "cos4"
- H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION
- G03B: APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR (optical parts of such apparatus G02B; photosensitive materials or processes for photographic purposes G03C; apparatus for processing exposed photographic materials G03D)
- G06T: IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06V: IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING

## Abstract

Provided are an imaging controller, an operation method and program of the imaging controller, and a camera capable of presenting a radiation image of a subject to a user in an easy-to-understand manner. An image sensor driving control unit causes an image sensor to image a visible ray to acquire a first image including a reflected image of a subject. The image sensor driving control unit causes the image sensor to image an infrared ray to acquire a second image including the reflected image and a radiation image of the subject. A zoom lens driving control unit moves a zoom lens along an optical axis to correct a difference in angle of view between the first image and the second image. Image processing units output difference images between the first image and the second image acquired in a state in which the difference in angle of view is corrected.

## Claims

### Claim 1

An imaging controller comprising:
a processor; and
a memory connected to or built into the processor,
wherein the imaging controller controls an operation of a camera having a first filter, a second filter, a correction lens, a zoom function, and an image sensor,
the first filter is configured to transmit a visible ray,
the second filter is configured to transmit an infrared ray, and
the processor is configured to:
selectively insert the first filter and the second filter into an optical path;
move the correction lens along an optical axis to correct an on-axis chromatic aberration between the visible ray transmitted through the first filter and the infrared rays transmitted through the second filter;
cause the image sensor to image the visible ray transmitted through the first filter to acquire a first image including a reflected image of a subject;
cause the image sensor to image the infrared ray transmitted through the second filter to acquire a second image including the reflected image and a radiation image of the subject;
operate the zoom function to correct a difference in angle of view between the first image and the second image caused by the movement of the correction lens along the optical axis; and
output a third image including the radiation image based on the first image and the second image acquired in a state in which the difference in angle of view is corrected,
wherein the processor is configured to output the third image only in a case where a preset execution condition is satisfied, and the execution condition includes a content that a brightness level of the reflected image included in the first image is equal to or larger than a preset threshold value.

### Claim 2 (depends on 1)

The imaging controller according to claim 1,
wherein the processor is configured to:
in a case where the brightness level is less than the threshold value, output the first image acquired and stored in advance in a case where the brightness level is equal to or larger than the threshold value and the second image acquired in a state in which the difference in angle of view is corrected.

### Claim 3 (depends on 1)

The imaging controller according to claim 1,
wherein the execution condition includes a content that an instruction to execute the output of the third image is received.

### Claim 4 (depends on 1)

The imaging controller according to claim 1,
wherein the processor is configured to:
generate a difference image between the first image and the second image as the third image.

### Claim 5 (depends on 4)

The imaging controller according to claim 4,
wherein the processor is configured to:
match a brightness level of the reflected image included in the first image with a brightness level of the reflected image included in the second image and then generate the difference image.

### Claim 6 (depends on 4)

The imaging controller according to claim 4,
wherein the processor is configured to:
generate the difference image in a state in which a brightness level of the reflected image included in the first image is different from a brightness level of the reflected image included in the second image.

### Claim 7 (depends on 1)

The imaging controller according to claim 1,
wherein the camera has a zoom lens, and
the processor is configured to move the zoom lens along the optical axis to correct the difference in angle of view between the first image and the second image caused by the movement of the correction lens along the optical axis.

### Claim 8 (depends on 7)

The imaging controller according to claim 7,
wherein the processor is configured to:
change a movement amount of the zoom lens required for the correction of the difference in angle of view according to a position of the zoom lens in a case where the on-axis chromatic aberration is corrected.

### Claim 9 (depends on 7)

The imaging controller according to claim 7,
wherein the processor is configured to:
move the correction lens to adjust a focus deviated by the movement of the zoom lens in a case where the difference in angle of view is corrected.

### Claim 10 (depends on 1)

A camera comprising:
the imaging controller according to claim 1.

### Claim 11

An operation method of an imaging controller that controls an operation of a camera having a first filter that transmits a visible ray, a second filter that transmits an infrared ray, a correction lens, a zoom function, and an image sensor, the operation method comprising:
by a processor of the imaging controller,
selectively inserting the first filter and the second filter into an optical path;
moving the correction lens along an optical axis to correct an on-axis chromatic aberration between the visible ray transmitted through the first filter and the infrared rays transmitted through the second filter;
causing the image sensor to image the visible ray transmitted through the first filter to acquire a first image including a reflected image of a subject;
causing the image sensor to image the infrared ray transmitted through the second filter to acquire a second image including the reflected image and a radiation image of the subject;
operating the zoom function to correct a difference in angle of view between the first image and the second image caused by the movement of the correction lens along the optical axis; and
outputting a third image including the radiation image based on the first image and the second image acquired in a state in which the difference in angle of view is corrected,
wherein the processor is configured to output the third image only in a case where a preset execution condition is satisfied, and the execution condition includes a content that a brightness level of the reflected image included in the first image is equal to or larger than a preset threshold value.

### Claim 12

A non-transitory storage medium storing a program that controls an operation of a camera having a first filter that transmits a visible ray, a second filter that transmits an infrared ray, a correction lens, a zoom function, and an image sensor, the program causing a computer to execute a process comprising:
selectively inserting the first filter and the second filter into an optical path;
moving the correction lens along an optical axis to correct an on-axis chromatic aberration between the visible ray transmitted through the first filter and the infrared rays transmitted through the second filter;
causing the image sensor to image the visible ray transmitted through the first filter to acquire a first image including a reflected image of a subject;
causing the image sensor to image the infrared ray transmitted through the second filter to acquire a second image including the reflected image and a radiation image of the subject;
operating the zoom function to correct a difference in angle of view between the first image and the second image caused by the movement of the correction lens along the optical axis; and
outputting a third image including the radiation image based on the first image and the second image acquired in a state in which the difference in angle of view is corrected,
wherein the computer is configured to output the third image only in a case where a preset execution condition is satisfied, and the execution condition includes a content that a brightness level of the reflected image included in the first image is equal to or larger than a preset threshold value.