| 摘要 |
<P>PROBLEM TO BE SOLVED: To improve edge detection in 2-dimensional image data such as ultrasonic image data that may be carried out automatically with minimal user involvement. <P>SOLUTION: A computer-assisted method for defining structures on images comprises the steps of: acquiring an image of a target structure; establishing a seed point within the structure on the image; detecting an edge in the image of the target structure so as to generate a partially processed image of the structure having a computed edge indicated thereon; extending a plurality of rays radially from the seed point to intersect the computed edge at respective intersection points; and connecting the intersection points to form an initial closed contour having respective segments connecting neighboring ones of the intersection points. <P>COPYRIGHT: (C)2009,JPO&INPIT |
