Image processing device for endoscope, endoscope device, image processing method of image processing device for endoscope, and image processing program

1. An image processing device for use with a medical device that outputs a taken image including a subject image and for use with an image display that has a first side shorter than a second side intersecting with the first side, and the image display having a first setting state in which the first side is along a vertical direction and a second setting state in which the second side is along the vertical direction, the image processing device comprising:

circuitry configured to:

recognize whether the image display is set in the first setting state or the second setting state;

process the taken image to generate a video signal such that the subject image in an observation image based on the video signal to be displayed on the image display has an orientation corresponding to the setting state of the image display;

determine a size of the subject image;

set a magnification/reduction ratio of the subject image based the setting state and the size; and

generate the video signal obtained by magnifying/reducing the size of the subject image based on the magnification/reduction ratio set.

2. The image processing device according to claim 1 , wherein, when the size of the subject image in the taken image is equal to or smaller than a threshold corresponding to a length dimension of the first side of the image display, the circuitry sets the magnification/reduction ratio of the subject image in the first setting state to be same as the magnification/reduction ratio of the subject image in the second setting state.

3. The image processing device according to claim 1 , wherein, when the size of the subject image in the taken image is larger than a threshold corresponding to a length dimension of the first side of the image display, circuitry sets the magnification/reduction ratio of the subject image in the second setting state to be smaller than the magnification/reduction ratio of the subject image in the first setting state.

4. The image processing device according to claim 1 , the circuitry is further configured to:

discriminate a position of the subject image in the taken image, wherein,

when the image display is set in the first setting state, generate the video signal obtained by positioning the subject image in a center region in the observation image based on a position of the subject image in the taken image.

5. The image processing device according to claim 1 , the circuitry is further configured to:

discriminate a position of the subject image in the taken image, wherein,

when the image display is set in the second setting state, generate the video signal obtained by positioning the subject image in an upper region in the observation image based on a position of the subject image in the taken image.

6. An endoscope device comprising:

an endoscope to be inserted into a subject to capture a subject image;

an imaging device for an endoscope that is detachably connected to an eyepiece part of the endoscope to take the subject image and generate a taken image;

a controller that controls an operation of the imaging device;

the image processing device according to claim 1 ; and

a display device including the image display.

7. The endoscope device according to claim 6 , wherein the image processing device is part of the controller.

8. The endoscope device according to claim 6 , wherein the image processing device is part of the display device.

9. The endoscope device according to claim 6 , wherein the image display has a screen size of 40 inches or more.

10. An image processing device for use with a medical device that outputs a taken image including a subject image and for use with an image display that has a first side shorter than a second side intersecting with the first side, and the image display having a first setting state in which the first side is along a vertical direction and a second setting state in which the second side is along the vertical direction, the image processing device comprising:

circuitry configured to:

recognize whether the image display is set in the first setting state or the second setting state;

process the taken image to generate a video signal such that the subject image in an observation image based on the video signal to be displayed on the image display has an orientation corresponding to the setting state of the image display;

discriminate a position of the subject image in the taken image, wherein,

when the image display is set in the first setting state, generate the video signal obtained by positioning the subject image in a center region in the observation image based on the position of the subject image in the taken image.

11. An image processing device for use with a medical device that outputs a taken image including a subject image and for use with an image display that has a first side shorter than a second side intersecting with the first side, and the image display having a first setting state in which the first side is along a vertical direction and a second setting state in which the second side is along the vertical direction, the image processing device comprising:

circuitry configured to:

recognize whether the image display is set in the first setting state or the second setting state;

process the taken image to generate a video signal such that the subject image in an observation image based on the video signal to be displayed on the image display has an orientation corresponding to the setting state of the image display;

discriminate a position of the subject image in the taken image; and

when the image display is set in the second setting state, generate the video signal obtained by positioning the subject image in an upper region in the observation image based on the position of the subject image in the taken image.