COMPOSITION DETERMINATION DEVICE, IMAGING SYSTEM, COMPOSITION DETERMINATION METHOD, AND PROGRAM

• US 20110019021A1
• Filed: 06/10/2010
• Published: 01/27/2011
• Est. Priority Date: 07/23/2009
• Status: Active Grant

• Current Assignee: Sony Corporation (Sony Group Corp.)
• Original Assignee: Sony Corporation (Sony Group Corp.)
• Inventors: YOSHIZUMI, Shingo
• Granted Patent: US 8,908,057 B2
• Time in Patent Office: Days
• US Class Current: 348/222.1
• CPC Class Codes: G06T 2207/30201 Face
• CPC Class Codes: G06T 7/70 Determining position or orientation of objects or cameras camera calibration G06T7/80
• 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

Abstract

A composition determination device includes: subject detection means configured to detect a specific subject in an image based on image data; rotation angle detection means configured to detect a rotation angle of a specific target portion in an image section in the image, corresponding to a detected subject which is the subject detected by the subject detecting means; and composition determination means configured to determine a composition on the basis of the rotation angle.

Claims

1. A composition determination device comprising:

subject detection means configured to detect a specific subject;

in an image based on image data;

rotation angle detection means configured to detect a rotation angle of a specific target portion in an image section in the image, corresponding to a detected subject which is the subject detected by the subject detecting means; and

composition determination means configured to determine a composition on the basis of the rotation angle.

2. The composition determination device according to claim 1, wherein the composition determination means sets an image area division line with respect to the image, calculates a movement amount on the basis of the rotation angle, and obtains as a determination result the composition in which the center of gravity, which is set in the image section which includes at least one detected subject, is located in a position which is shifted from the image area division line by the movement amount.

3. The composition determination device according to claim 2, wherein the composition determination means sets the image area division line in a vertical direction with respect to the image, in a case where the specific target portion of the detected subject is within an angle range which is considered as a longitudinal direction with respect to the rotation angle.

4. The composition determination device according to claim 2, wherein the composition determination means sets the image area division line in a horizontal direction with respect to the image, in a case where the specific target portion of the detected subject is within an angle range which is considered as a transverse direction with respect to the rotation angle.

5. The composition determination device according to claim 4, wherein the composition determination means determines, in a case where the rotation angles of the plurality of detected subjects are all the same, the composition on the basis of all the same rotation angles.

6. The composition determination device according to claim 5, wherein the composition determination means sets, in a case where the rotation angles of the plurality of detected subjects are not all the same, a reference rotation angle which becomes a reference with respect to all the plurality of detected subjects, and determines the composition on the basis of the set reference rotation angle.

7. The composition determination device according to claim 6, wherein the composition determination means sets the movement amount from the image area division line to the center of gravity on the basis of the number of the detected subjects, in the composition obtained as the determination result.

8. The composition determination device according to claim 7, wherein the composition determination means enlarges and sets the width of a detection frame which is set in an image frame of the image, in a direction which is recognized as a vertical direction by means of the composition determination means, in a case where the specific target portion of the detected subject is within an angle range which is considered as a transverse direction with respect to the rotation angle, compared with a case where the specific target portion of the detected subject is within an angle range which is considered as a longitudinal direction,

the device further comprising a recording means configured to record, according to the detection of a state where the detected subjects are collected with respect to the detection frame, the image data at this time in a recording medium.

9. The composition determination device according to claim 1, wherein the composition determination means determines, in a case where the rotation angles of the plurality of detected subjects are all the same, the composition on the basis of all the same rotation angles.

10. The composition determination device according to claim 1, wherein the composition determination means sets, in a case where the rotation angles of the plurality of detected subjects are not all the same, a reference rotation angle which becomes a reference with respect to all the plurality of detected subjects, and determines the composition on the basis of the set reference rotation angle.

11. The composition determination device according to claim 7, wherein the composition determination means enlarges and sets the width of a range detection frame which is set in an image frame of the image, in a direction which is recognized as a vertical direction by means of the composition determination means, in a case where the specific target portion of the detected subject is within an angle range which is considered as a transverse direction with respect to the rotation angle, compared with a case where the specific target portion of the detected subject is within an angle range which is considered as a longitudinal direction,

the device further comprising a recording means configured to record, according to the detection of a state where the detected subjects are collected with respect to the range detection frame, the image data at this time in a recording medium.

12. The composition determination device according to claim 2, wherein the composition determination means sets the image area division line in a horizontal direction with respect to the image, in a case where the specific target portion of the detected subject is within an angle range which is considered as a transverse direction with respect to the rotation angle.

13. The composition determination device according to claim 2, wherein the composition determination means sets the movement amount from the image area division line to the center of gravity on the basis of the number of the detected subjects, in the composition obtained as the determination result.

14. An imaging system comprising:

an imaging device section;

a movable device section which includes a mechanism which is movable by changing an imaging view range of the imaging device section;

image data obtaining means configured to obtain image data on a captured image which is obtained by imaging of the imaging device section;

subject detection means configured to detect a specific subject in an image based on the image data;

rotation angle detection means configured to detect a rotation angle of a specific target portion in an image section in the image, corresponding to a detected subject which is the subject detected by the subject detecting means;

composition determination means configured to determine a composition on the basis of the rotation angle; and

composition control means configured to perform a control for at least the movable device section so that the imaging view range is adjusted to obtain the composition which is determined by the composition determination means.

15. A composition determination method comprising the steps of:

detecting a specific subject in an image based on image data;

detecting a rotation angle of a specific target portion in an image section in the image, corresponding to detected subject which is the subject detected by the subject detecting means; and

determining a composition on the basis of the rotation angle.

16. A program for causing a composition determination device to execute the following steps:

detecting a specific subject in an image based on image data;

detecting a rotation angle of a specific target portion in an image section in the image, corresponding to a detected subject which is the subject detected by the subject detecting means; and

determining a composition on the basis of the rotation angle.

17. A composition determination device comprising:

a subject detection unit configured to detect a specific subject in an image based on image data;

a rotation angle detection unit configured to detect a rotation angle of a specific target portion in an image section in the image, corresponding to a detected subject which is the subject detected by the subject detecting unit; and

a composition determination unit configured to determine a composition on the basis of the rotation angle.

18. An imaging system comprising:

an imaging device section;

a movable device section which includes a mechanism which is movable by changing an imaging view range of the imaging device section;

an image data obtaining unit configured to obtain image data of an image which is obtained by imaging of the imaging device section;

a subject detection unit configured to detect a specific subject in the image based on the image data;

a rotation angle detection unit configured to detect a rotation angle of a specific target portion in an image section in the image, corresponding to a detected subject which is the subject detected by the subject detecting unit;

a composition determination unit configured to determine a composition on the basis of the rotation angle; and

a composition controller configured to perform a control for at least the movable device section so that the imaging view range is adjusted to obtain the composition which is determined by the composition determination unit.