| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an image processing method and a device which detects a movable body or the like with high accuracy. <P>SOLUTION: With an effective area S1 as an object, a difference between an input image I(x, y) and a background image A(x, y) is acquired as a background difference image BG(x, y). With the entire area being an object, a difference between a current input image I(x, y) and the previous input image F(x, y) is acquired as a contour extraction image (differential image between frames) O(x, y). On the basis of the figure of a varying body (a part of a person Ma) in the background difference image BG(x, y), the contour of the varying body is extracted in the contour extraction image O(x, y) which continues to the figure. Consequently, a movable body contour image M(x, y) is acquired which includes the entire contour of the person Ma and has high reliability. Even if an ineffective area S2 is widened which is automatically determined, the person Ma is detected with high accuracy. <P>COPYRIGHT: (C)2004,JPO&NCIPI |
