Endoscope apparatus and method

1. An endoscope apparatus comprising:

an endoscope that generates an image of an object;

a display portion that displays the image and a cursor that designates a position in the image;

a characteristic quantity calculating portion that calculates, based on the image, a characteristic quantity of the image on the basis of the position designated by the cursor, the characteristic quantity representing an extent to which a position in the image is suited to a measurement processing that uses a characteristic of the image; and

a control portion that controls movement of the cursor in accordance with the characteristic quantity.

2. The endoscope apparatus according to claim 1 , further comprising a measurement processing portion that performs the measurement processing of the object based on the position in the image that is designated by the cursor,

wherein the characteristic quantity calculating portion calculates the characteristic quantity based on a measurement result of the object that was measured by the measurement processing portion.

3. The endoscope apparatus according to claim 2 , wherein the measurement processing portion calculates as the measurement result at least one of a matching degree of partial images in a plurality of object images related to the same object and an object distance of the object.

4. The endoscope apparatus according to claim 2 , wherein:

the measurement processing portion measures the object at a plurality of positions included in an area of the image that is determined based on the position in the image that is designated by the cursor;

the characteristic quantity calculating portion calculates a plurality of characteristic quantities of the object in the area based on the measurement results; and

the control portion moves the cursor to a position suited to the measurement processing in the area based on the characteristic quantities.

5. The endoscope apparatus according to claim 2 , wherein:

the measurement processing portion measures the object at a plurality of positions in the image that are determined based on the position in the image that is designated by the cursor;

the characteristic quantity calculating portion calculates a plurality of characteristic quantities of the object at the determined positions based on the measurement results; and

the control portion controls a movement direction of the cursor so that the cursor moves toward a position suited to the measurement processing based on the characteristic quantities.

6. The endoscope apparatus according to claim 4 , further comprising a detecting portion that detects a movement instruction of the cursor from an input device,

wherein the measurement processing portion determines the area based on a movement direction of the cursor detected by the detecting portion.

7. The endoscope apparatus according to claim 5 , further comprising a detecting portion that detects a movement instruction of the cursor from an input device,

wherein the measurement processing portion determines the plurality of positions based on the movement direction of the cursor detected by the detecting portion.

8. The endoscope apparatus according to claim 2 , wherein the control portion makes a movement speed of the cursor slow when the characteristic quantity is suited to the measurement processing.

9. The endoscope apparatus according to claim 1 , wherein the characteristic quantity calculating portion calculates the characteristic quantity based on at least one of brightness and texture value of the image on the basis of the position designated by the cursor.

10. A method comprising:

generating, with an imaging device, an image of an object;

displaying, on a display, the image and a cursor that designates a position in the image;

calculating, based on the image, a characteristic quantity of the image on the basis of the position designated by the cursor, the characteristic quantity representing an extent to which a position in the image is suited to a measurement processing that uses a characteristic of the image; and

controlling movement of the cursor in accordance with the characteristic quantity.

11. An endoscope apparatus comprising:

an endoscope that generates an image of an object;

a display portion that displays the image and a cursor that designates a position in the image;

a characteristic quantity calculating portion that calculates, based on the image, a characteristic quantity of the image on the basis of the position designated by the cursor, the characteristic quantity representing an extent to which a position in the image is suited to a measurement processing that uses a characteristic of the image; and

means for controlling movement of the cursor in accordance with the characteristic quantity.

12. The endoscope apparatus according to claim 2 , wherein:

the measurement processing portion measures the object at a plurality of positions included in an area of the image that is determined based on the position in the image that is designated by the cursor;

the characteristic quantity calculating portion calculates a plurality of characteristic quantities of the object in the area based on the measurement results; and

the control portion moves the cursor based on a user's input and guides the cursor based on the characteristic quantities to a position in the predetermined area.

13. The endoscope apparatus according to claim 2 , wherein:

the measurement processing portion measures the object at a plurality of positions in the image that are determined based on the position in the image the image that is designated by the cursor;

the characteristic quantity calculating portion calculates a plurality of characteristic quantities of the object at the determined positions based on the measurement results; and

the control portion moves the cursor based on a user's input and guides a movement direction of the cursor based on the characteristic quantities.

14. The endoscope apparatus according to claim 2 , wherein the control portion moves the cursor based on a user's input and controls a movement speed of the cursor based on the characteristic quantity.