| 摘要 |
The present invention provides a method for detecting a moving object and apparatus for the same. The image data [ DELTA ij (k)] outputted by subtracter 4 are alternatively contained in image buffers 21 and 22. In subtracter 24, the image data [ DELTA ij(k-1)] of one timing beforehand is removed from the image data [ DELTA ij(k)] of the present time point. In addition, the image data [ DELTA ij(k-1)] of one timing beforehand and the image data [ DELTA ij(k)] of the present time point are compared using comparator 25. In this case, if image data [ DELTA ij(k)] and image data [ DELTA ij(k-1)] differ, the image data [ DELTA ij(k-1)] of one timing beforehand is supplied to subtracter 26. The initial moving object image is excluded by subtracter 26. Consequently, it is possible to precisely distinguish the shape, size, etc. of a moving object without traces (afterimage) of the moving object at the present time point remaining in the final image data [+E,uns DELTA +EE ij (k)] R. According to another method also proposed in the present invention, the image data [ DELTA ij(k-1)] of the moving object are obtained by subtracting the image data [Dij(k-1)] of one timing beforehand or the average image data [Mij(k-1)] of one timing beforehand from the present image data [Dij(k)], and the image data [ DELTA ij(k-2)] of the moving object are obtained by subtracting the image data [Dij(k-2)] of two timings beforehand or the average image data [Mij(k-2)] of two timings beforehand from the present image data [Dij(k)]. The traces (afterimage) of a moving object is erased by obtaining theoretical product of the image data [ DELTA ij(k-1)] and [ DELTA ij(k-2)].
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