CONTROL APPARATUS, CONTROL METHOD, AND STORAGE MEDIUM

• US 20150371376A1
• Filed: 06/12/2015
• Published: 12/24/2015
• Est. Priority Date: 06/20/2014
• Status: Abandoned Application

• Current Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Original Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Inventors: Adachi, Keiji
• Application Number:
  US14/738,170
• Publication Number:
  US 20150371376A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G06T 3/40 Scaling of whole images or parts thereof, e.g. expanding or contracting
• CPC Class Codes: G06V 10/25 Determination of region of interest [ROI] or a volume of interest [VOI]
• CPC Class Codes: G06V 10/28 Quantising the image, e.g. histogram thresholding for discrimination between background and foreground patterns
• CPC Class Codes: G06V 40/103 Static body considered as a whole, e.g. static pedestrian or occupant recognition
• CPC Class Codes: H04N 23/611 where the recognised objects include parts of the human body
• CPC Class Codes: H04N 23/64 Computer-aided capture of images, e.g. transfer from script file into camera, check of taken image quality, advice or proposal for image composition or decision on when to take image
• CPC Class Codes: H04N 23/69 Control of means for changing angle of the field of view, e.g. optical zoom objectives or electronic zooming

Abstract

Method(s), control apparatus(es) and storage medium(s) for controlling a zooming operation of an imaging unit according to settings relating to video recognition processing are provided herein. In one or more embodiments, a zoom control unit or an acquisition unit of at least one control apparatus acquires a parameter, such as size information, relating to a size designated for recognition processing to be performed on image data obtained through a shooting operation of an imaging unit, and the zoom control unit or a change unit restricts the change in zoom magnification of the imaging unit according to the acquired parameter. The control apparatus may include: (i) a change unit for changing the size corresponding to the parameter or size information according to a change in the zoom magnification; and (ii) a determination unit for determining a zoom magnification changeable range of the imaging unit according to the size information.

Claims

1. A control apparatus comprising:

an acquisition unit configured to acquire size information designated by a user, which is information about a size designated for recognition processing to be performed on an image captured by an imaging unit;

a change unit configured to change the size corresponding to the size information acquired by the acquisition unit according to a change in zoom magnification of the imaging unit; and

a determination unit configured to determine a zoom magnification changeable range of the imaging unit according to the size information acquired by the acquisition unit.

2. The control apparatus according to claim 1, wherein the size information acquired by the acquisition unit includes a size of a human body to be detected from the captured image.

3. The control apparatus according to claim 1, wherein the size information acquired by the acquisition unit includes area designation information that indicates a size of a human body detection range defined in the captured image.

4. The control apparatus according to claim 1, wherein the size information acquired by the acquisition unit includes line designation information that indicates a size of a detection line being set to detect a presence of an object passing in the captured image.

5. The control apparatus according to claim 1, wherein the size information acquired by the acquisition unit includes area information that indicates a size of an entry detection area being set in the captured image to detect an entry of an object.

6. The control apparatus according to claim 1, wherein:

the change unit is further configured to enlarge the size corresponding to the size information if the zoom magnification is controlled in such a way as to have a larger value compared to when the value for the zoom magnification does not become larger and reduce the size corresponding to the size information if the zoom magnification is controlled in such a way as to have a smaller value compared to when the value for the zoom magnification does not become smaller, and

the determination unit is further configured to determine the zoom magnification changeable range in such a way as to prevent the size changed by the change unit from exceeding a size corresponding to an imaging range of the imaging unit.

7. The control apparatus according to claim 1, further comprising:

a notification unit configured to output a notification indicating that an input zoom magnification change instruction is invalid if the input zoom magnification change instruction causes the zoom magnification to excurse or digress from, and/or leave, the zoom magnification changeable range determined by the determination unit.

8. A control method comprising:

acquiring size information designated by a user, which is information about a size designated for recognition processing to be performed on an image captured by an imaging unit;

changing the size corresponding to the acquired size information according to a change in zoom magnification of the imaging unit; and

determining a zoom magnification changeable range of the imaging unit according to the acquired size information.

9. The control method according to claim 8, wherein the acquired size information includes a size of a human body to be detected from the captured image.

10. The control method according to claim 8, wherein the acquired size information includes area designation information that indicates a size of a human body detection range defined in the captured image.

11. A computer-readable storage medium storing a program for causing a computer to control an apparatus, the program comprising:

computer-executable instructions for acquiring size information designated by a user, which is information about a size designated for recognition processing to be performed on an image captured by an imaging unit;

computer-executable instructions for changing the size corresponding to the acquired size information according to a change in zoom magnification of the imaging unit; and

computer-executable instructions for determining a zoom magnification changeable range of the imaging unit according to the acquired size information.

12. The medium according to claim 11, wherein the acquired size information includes a size of a human body to be detected from the captured image.

13. The medium according to claim 11, wherein the acquired size information includes area designation information that indicates a size of a human body detection range defined in the captured image.