Motion vector detection device, method of controlling a motion vector detection device, and image capturing apparatus that change a size and a number of a template block based on a use of a detected motion vector

An image capturing apparatus comprising:

• (A) an image capturing unit;
• and
• (B) at least one processor and at least one memory function as:
• (a) an image processing unit;
• (b) a detection unit configured to detect a motion vector between a plurality of images;
• and
• (c) a control unit configured to perform setting with respect to a detection of the motion vector,
• wherein the detection unit detects the motion vector by searching for an area, which has a correlation with a template block that is set in one of the plurality of images, within a search range that is set for another one of the plurality of images,
• wherein the control unit changes a size and a number of the template block, based on a use of the motion vector that is detected by the detection unit, and
• wherein the detection unit detects the motion vector between the plurality of images that are captured by the image capturing unit and are supplied via the image processing unit.

A motion vector detection device comprising:

• at least one processor and at least one memory functioning as:
• (a) a detection unit configured to detect a motion vector between a plurality of images;
• and
• (b) a control unit configured to perform setting with respect to a detection of the motion vector,
• wherein the detection unit detects the motion vector by searching for an area, which has a correlation with a template block that is set in one of the plurality of images, within a search range that is set for another one of the plurality of images, and
• wherein the control unit sets a greater number of smaller template blocks with a higher density if a use of the motion vector that is to be detected by the detection unit is for detecting movement of an object than if the use is for detecting movement of an apparatus that includes the motion vector detection device.

An image capturing apparatus comprising:

• (A) an image capturing unit;
• and
• (B) at least one processor and at least one memory functioning as:
• (a) an image processing unit;
• (b) a detection unit configured to detect a motion vector between a plurality of images;
• and
• (c) a control unit configured to perform setting with respect to a detection of the motion vector,
• wherein the detection unit detects the motion vector by searching for an area, which has a correlation with a template block that is set in one of the plurality of images, within a search range that is set for another one of the plurality of images, and
• wherein the control unit sets a greater number of smaller template blocks with a higher density if a use of the motion vector that is to be detected by the detection unit is for detecting movement of an object than if the use is for detecting movement of an apparatus that includes the motion vector detection device.