| 摘要 |
There are provided an image processing method, and an image processing system, an image processor, and a computer program in which the fringe position of a detection object, e.g. the width of outline of the face of a driver, can be detected with high precision even when illuminance varies locally in a system employing a on-vehicle camera for imaging the face of the driver. Luminance of pixels arranged in the first direction of an image, e.g. the horizontal direction, is subjected to quadric differential, data based on the results of quadratic differential is integrated in the second direction, e.g. the vertical direction, and the position in the first direction of the detection object in the image is detected based on the integration results.
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