| 摘要 |
<P>PROBLEM TO BE SOLVED: To easily and excellently extract only an imaged area on the basis of a low imaging image picked up in a time zone in which an imaging effect is relatively low and a high imaging image picked up in a time zone in which the imaging effect is relatively high. <P>SOLUTION: An dilation processing for multilevel images is executed to the low imaging image 11, and an image 13 after the dilation processing in which a bony part area 15 is dilated is obtained. By obtaining a difference image 14 by executing the subtraction processing of the obtained image 13 after the dilation processing and the high imaging image 12, a cerebrovascular area 17 is extracted. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
