| 摘要 |
<P>PROBLEM TO BE SOLVED: To identify an image region of an identification target in an imaged image with high accuracy even under a situation where it is difficult to identify the image region of the identification target in the imaged image using a differential polarization degree. <P>SOLUTION: A P-polarization image and an S-polarization image in an imaged region are imaged with a polarization camera 10, and for each pixel, a luminance sum value (monochrome luminance) between the P-polarization image and the S-polarization image and a differential polarization degree indicating a ratio of a luminance difference value between the P-polarization image and the S-polarization image to the luminance sum value are calculated. Then, if the differential polarization degree is greater than or equal to a predetermined differential polarization degree threshold, a road-edge edge part that is an identification target is identified using the differential polarization degree calculated by a differential polarization degree image processing unit 15, or otherwise, the road-edge edge part is identified using the monochrome luminance calculated by a monochrome image processing unit 13. <P>COPYRIGHT: (C)2012,JPO&INPIT |
