METHOD AND SYSTEM FOR EXTRACTING IMAGE CHARACTERISTIC CURVE

摘要

Provided is a method for extracting an image salient curve. The method comprises the following steps: drawing an approximate curve along a salient edge of an image from which a salient curve is to be extracted; obtaining short edges in the image; calculating a harmonic vector field by using the drawn curve as a boundary condition; filtering the short edges in the image by using the harmonic vector field; updating the vector field by using the short edges left in the image as boundary conditions; and obtaining an optimal salient curve of the image by using the energy of a minimized spline curve in the vector field. Also provided is a system for extracting an image salient curve. The image salient curve can ensure the smoothness and a bending characteristic.

主权项

1. A method for extracting image salient curve, comprising steps of:
a. drawing a curve on an image from which a salient curve is to be extracted along a salient edge thereof; b. obtaining short edges in the image; c. calculating a harmonic vector field by using the drawn curve as a boundary condition; d. filtering the short edges in the image by using the harmonic vector field; e. updating the vector field by using the short edges left in the image as boundary conditions; and f. obtaining an optimal salient curve of the image by minimizing energy of a spline curve in the vector field.