| US 7,477,761 B2 | ||
| Image processing apparatus and method, and image-capturing apparatus | ||
| Tetsujiro Kondo, Tokyo (Japan); Seiji Wada, Kanagawa (Japan); Junichi Ishibashi, Saitama (Japan); Takashi Sawao, Tokyo (Japan); Naoki Fujiwara, Tokyo (Japan); Takahiro Nagano, Kanagawa (Japan); and Toru Miyake, Tokyo (Japan) | ||
| Assigned to Sony Corporation, Tokyo (Japan) | ||
| Appl. No. 10/362,354 PCT Filed Jun. 20, 2002, PCT No. PCT/JP02/06178 § 371(c)(1), (2), (4) Date Aug. 07, 2003, PCT Pub. No. WO03/001453, PCT Pub. Date Jan. 03, 2003. |
||
| Claims priority of application No. 2001-191004 (JP), filed on Jun. 25, 2001. | ||
| Prior Publication US 2004/0057602 A1, Mar. 25, 2004 | ||
| Int. Cl. G06K 9/00 (2006.01); G06K 9/34 (2006.01); G06K 9/66 (2006.01); G06K 9/40 (2006.01) | ||
| U.S. Cl. 382—107 [382/173; 382/190; 382/255] | 4 Claims |
| 1. An image processing apparatus for performing image-processing on image data which is formed of a predetermined number of
pixel data obtained by an image-capturing device having a time integrating function, said image processing apparatus comprising:
an area specifying unit configured to store three consecutively input frames and specify areas in a designated frame,
wherein the area specifying unit specifies, in a first period of time, a first area in the designated frame as an uncovered
background area when a first determination result of a first frame that is two frames before the designated frame and a second
frame that is one frame before the designated frame is and when a second determination result of the second frame and the
designated frame is stationary,
wherein said area specifying unit specifies, in a second period of time, a second area in the designated frame as the foreground
area when the second determination result is moving and when a third determination result of the designated frame and a third
frame that is one frame after the designated frame is moving,
wherein said area specifying unit further specifies, in the second period of time, a third area in the designated frame as
the background area when the second determination result and the third determination result are both stationary, and
wherein said area specifying unit specifies, in a third period of time, a fourth area in the designated frame as the covered
background area when the third determination result is stationary and when a fourth determination result of the third frame
and a fourth frame that is two frames after the designated frame is moving;
a mixture-ratio detection unit configured to detect a mixture ratio indicating a ratio of foreground object components and
background object components in the uncovered background area and in the covered background area; and
a foreground/background separation unit configured to separate pixel data of pixels belonging to the uncovered background
area and to the covered background area into the foreground object components and the background object components based on
the mixture ratio, and to generate a foreground component image consisting of only the foreground object components and a
background component image consisting of only the background component image in the designated frame.
|