Image processing apparatus, imaging apparatus, image processing method, and image processing program

1. An image processing apparatus comprising:

a display that is configured to display a display image;

an input device that is configured to receive input from a user; and

a processor that is configured to:

display, on the display, at a location within the display image and of a size specified by the user via the input device, a specifying frame with which the user specifies a partial region of the display image within the specifying frame and a color designation mark included in the specifying frame with which the user designates a reference color from colors included in the partial region of the display image within the specifying frame, wherein the specifying frame and color designation mark are overlaid with the display image;

extract an image corresponding to the reference color designated by the color designation mark from the partial region of the display image within the specifying frame, as a compositing target image; and

generate a composite image in which the compositing target image is composited in a selection image selected by the user via the input device.

2. The image processing apparatus according to claim 1 ,

wherein a relative positional relationship between the specifying frame and the color designation mark is predetermined.

3. The image processing apparatus according to claim 1 , wherein the processor is further configured to:

receive a size change instruction for enlarging or reducing the specifying frame, and

perform control for changing the size of the specifying frame in accordance with the size change instruction.

4. The image processing apparatus according to claim 1 , wherein the processor is further configured to:

receive a movement instruction for moving a position of the specifying frame, and

perform control for moving the position of the specifying frame in accordance with the movement instruction.

5. An imaging apparatus comprising:

an imaging device that images a subject; and

the image processing apparatus according to claim 1 , wherein the display displays an image of the subject captured by the imaging device.

6. The image processing apparatus according to claim 1 ,

wherein a color of the display image in a part on which the color designation mark is overlaid is set as the reference color.

7. The image processing apparatus according to claim 6 , wherein the processor is further configured to:

display an indicator that has a larger area than the color designation mark and that represents the reference color.

8. The image processing apparatus according to claim 1 ,

wherein the color designation mark has a shape surrounding a part of the display image, and

the processor is further configured to set a color of the display image surrounded by the color designation mark, as the reference color.

9. The image processing apparatus according to claim 8 , wherein the processor is further configured to:

display an indicator that has a larger area than a region of the display image surrounded by the color designation mark and that represents the reference color.

10. The image processing apparatus according to claim 1 , wherein the processor is further configured to:

quantify gradation of an entire image in the specifying frame and extract an image in which a numerical value of gradation is within a reference color range including a numerical value of gradation to which the reference color corresponds, as the compositing target image.

11. The image processing apparatus according to claim 10 , wherein the processor is further configured to:

allow the user to set the reference color range.

12. The imaging apparatus according to claim 5 ,

wherein live view display of the display image is performed on the display.

13. An image processing method executed by a computer, comprising:

displaying, on a display, at a location within a display image and of a size specified by a user via an input device, a specifying frame with which the user specifies a partial region of the display image within the specifying frame and a color designation mark included in the specifying frame with which the user designates a reference color from colors included in the partial region of the display image within the specifying frame, wherein the specifying frame and color designation mark are overlaid with the display image;

extracting an image corresponding to the reference color designated by the color designation mark from the partial region of the display image within the specifying frame, as a compositing target image; and

generating a composite image in which the compositing target image is composited in a selection image selected by the user via the input device.

14. A non-transitory computer-readable storage medium storing an image processing program causing a computer to execute a process, the process comprising:

displaying, on a display, at a location within a display image and of a size specified by a user via an input device, a specifying frame with which the user specifies a partial region of the display image within the specifying frame and a color designation mark included in the specifying frame with which the user designates a reference color from colors included in the partial region of the display image within the specifying frame, wherein the specifying frame and color designation mark are overlaid with the display image;

extracting an image corresponding to the reference color designated by the color designation mark from the partial region of the display image within the specifying frame, as a compositing target image; and

generating a composite image in which the compositing target image is composited in a selection image selected by the user via the input device.

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

the specifying frame is configured to be resizable and movable by the user via the input device within the display image to specify the partial region in the display image of the specified location and the size.

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

the color designation mark is configured to move when the specifying frame is resized or moved by the user while keeping a predetermined relative positional relationship between the specifying frame and the color designation mark.