Method and apparatus for extracting edge of target

Abstract

The invention discloses a method and a device for extracting target edges, and belongs to the field of computer image processing. The method comprises the following steps: receiving the initial anchor point and the terminal anchor point input on target edges of an input image; converting the input image into an edge image; and extracting target edges between the initial anchor point and the terminal anchor point according to the edge image and the preset heuristic evaluation function extraction algorithm. The device comprises a receiving module, a conversion module and an extraction module. The invention which calculates the trace between the two anchor points input on target edges by applying the heuristic evaluation function extraction algorithm has the advantage that the trace of target edges can be obtained exactly, thereby improving the accuracy of the extraction of target edges; and the invention can further obtain the trace of the target edges under the circumstance that the distance between the two anchor points input on the target edges is far, thereby, reducing the workload of the extraction of target edges.

Description

A method and device for extracting object edges technical field The invention relates to the field of computer image processing, in particular to a method and device for extracting object edges. Background technique With the rapid development of computer technology, computer image processing technology is also becoming more and more mature. In computer image processing, it is often necessary to extract an object from an image, for example, extract a person in a photo, and then place it on another background to form a new photo. When extracting an object from an image, how to quickly and accurately extract the edge of the object is a problem worthy of further study. In the prior art, the edge of the object is extracted from an image mainly by using tools such as the path tool and the magic wand in the Photoshop image processing software; in addition, the edge of the object can also be extracted from an image by the intelligent scissors algorithm , the principle of the sm...

AI Technical Summary

Problems solved by technology

3) For the intelligent scissors algorithm, when extracting the edge of the object, multiple iterative calculations are required to extract the edge of the object, which takes a long time; moreover, the intelligent scissors algorithm, like the magic wand tool, cannot extract objects with rich color changes

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