| 摘要 |
PROBLEM TO BE SOLVED: To accurately generate key information by determining a contour area related to the contour of object, calculating a gradient vector and generating two inner and outer boundary curves along with a contour area edge. SOLUTION: Based on estimated contour information S2 from an estimated contour calculating part 5, a contour candidate area determining part 6 determines contour candidate area information s3 and inputs it to a gradient vector calculating part 7. Here, an edge strength image G is calculated and sent to a contour path search part 8 and a contour extracting part 9. The search part 8 sends a contour coordinate list D of pixels which passed through the center of contour to a curve generating part 10, and at this part 10, contour curve information C is prepared and sent to the contour extracting part 9. On the other hand, a motion vector estimating part 11 estimates movement from information C of the current image and preceding image and feeds it back to the determining part 6. Based on the image G and the information C, the contour extracting part 9 generates two boundary curves surrounding an area corresponding to the contour of the object and sends them to a soft key generating part 3. |
