Face detection image processing device, camera device, image processing method, and program

1. An image processing device comprising:

a face detector configured to detect a face from an image given on a basis of detection information; and

a processing unit configured to set the detection information of said face detector, receive at least an input image before distortion correction of the image before the distortion correction and an image after the distortion correction, divide an entire image region of the input image, and supply each of the divided images to said face detector on a time-division basis,

wherein said face detector detects faces from a face of a maximum size to a face of a minimum size in the entire image in a detectable range.

2. The image processing device according to claim 1 , wherein said processing unit divides said entire image region so as to have an image overlap region on a division boundary line.

3. The image processing device according to claim 1 , wherein said processing unit sets said detection information including face sizes in said face detector such that detected face sizes are prevented from coinciding with each other between divided and reduced images.

4. The image processing device according to claim 1 , wherein said processing unit performs control for a detected face so as to detect only a peripheral image region of the face on a basis of face detection result information obtained by said face detector.

5. The image processing device according to claim 4 , wherein said processing unit has a function of setting a region for detecting a face to a range proportional to size of the face.

6. The image processing device according to claim 4 , wherein said processing unit has a function of setting a region for said face detector to detect a face to a range in consideration of an amount of movement estimated from a positional relation of the face in a past.

7. The image processing device according to claim 1 , wherein said processing unit controls said face detector to detect motion in the entire image region and detect a face within only a region where the motion occurs as an object.

8. The image processing device according to claim 3 , wherein said processing unit controls said face detector to detect motion in the entire image region and detect a face within only a region where the motion occurs as an object.

9. The image processing device according to claim 4 , wherein said processing unit controls said face detector to detect motion in the entire image region and detect a face within only a region where the motion occurs as an object.

10. A camera device comprising:

an image pickup element;

an optical system for forming an image of a subject on said image pickup element; and

an image processing device capable of subjecting an original image picked up with a wide-angle lens by said image pickup element to distortion correction using a distortion correcting parameter, wherein said image processing device includes a face detector configured to detect a face from an image given on a basis of detection information, and

a processing unit configured to set the detection information of said face detector, receive at least an input image before distortion correction of the image before the distortion correction and an image after the distortion correction, divide an entire image region of the input image, and supply each of the divided images to said face detector on a time-division basis, and

said face detector detects faces from a face of a maximum size to a face of a minimum size in the entire image in a detectable range.

11. The camera device according to claim 10 , wherein said processing unit divides said entire image region so as to have an image overlap region on a division boundary line.

12. The camera device according to claim 10 , wherein said processing unit sets said detection information including face sizes in said face detector such that detected face sizes are prevented from coinciding with each other between divided and reduced images.

13. The camera device according to claim 10 , wherein said processing unit performs control for a detected face so as to detect only a peripheral image region of the face on a basis of face detection result information obtained by said face detector.

14. The camera device according to claim 13 , wherein said processing unit has a function of setting a region for detecting a face to a range proportional to size of the face.

15. The camera device according to claim 13 , wherein said processing unit has a function of setting a region for said face detector to detect a face to a range in consideration of an amount of movement estimated from a positional relation of the face in a past.

16. The camera device according to claim 10 , wherein said processing unit controls said face detector to detect motion in the entire image region and detect a face within only a region where the motion occurs as an object.

17. The camera device according to claim 12 , wherein said processing unit controls said face detector to detect motion in the entire image region and detect a face within only a region where the motion occurs as an object.

18. The camera device according to claim 13 , wherein said processing unit controls said face detector to detect motion in the entire image region and detect a face within only a region where the motion occurs as an object.

19. An image processing method for detecting a face from an image given on a basis of detection information set in a face detector, said image processing method comprising the steps of:

setting said detection information;

dividing at least an entire image region before distortion correction of images before the distortion correction and after the distortion correction; and

supplying each of the divided images to said face detector on a time-division basis, wherein said face detector detects faces from a face of a maximum size to a face of a minimum size in the entire image in a detectable range.

20. A non-transitory computer readable medium having stored thereon computer executable image processing instructions for detecting a face from an image given on a basis of detection information set in a face detector, said image processing instructions comprising:

setting said detection information;

dividing at least an entire image region before distortion correction of images before the distortion correction and after the distortion correction; and

supplying each of the divided images to said face detector on a time-division basis,

wherein said face detector detects faces from a face of a maximum size to a face of a minimum size in the entire image in a detectable range.