| 摘要 |
<p>Machine analysis of an image to segment (106) the image for subsequent processing is guided by input (102) from a human operator. A convenient drawing tool allows the user to select an object in an image. Machine image segmentation processing is constrained to a region of interest indicated by the operator using the drawing tool. Through the combination of opeator input and machine analysis, including edge detection, the object's boundaries are detected accurately. A resulting key signal may be manipulated by the operator in a number of respects and outputted for use in subsequent processing of the image, including color correction (104). Automatic segmentation is also applied to each image in a video clip based on a region of interest indicated by the operator on a first image of the clip. The region of interest is repositioned from image to image on the basis of detected motion of the object indicated by the region of interest.</p> |
