| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an image processing device that extracts feature amounts from an image in an easier and quicker manner. <P>SOLUTION: Respective base filters constituting a Gaussian steerable filter that can be separated in the xy direction is approximated with a rectangular filter. A filter R1x, which is the rectangular filter obtained by the approximation, is linearly combined with a filter R1y, and then a Gaussian steerable filter is approximately obtained, which is to be recorded. In extracting feature amounts, an integral image is generated from an image to be a feature amount extraction target, and the filter R1x and the filter R1y are calculated in reference to the integral image. The calculation result of the filters are linearly combined, and then an output of the filter processing by the approximately obtained Gaussian steerable filter is obtained. The present invention is applicable to an image processing device. <P>COPYRIGHT: (C)2012,JPO&INPIT |
