GABOR WAVELET-FUSED MULTI-SCALE LOCAL LEVEL SET ULTRASONIC IMAGE SEGMENTATION METHOD

摘要

A Gabor wavelet-fused multi-scale local level set ultrasonic image segmentation method. In said method, non-uniformity of the gray scale of an ultrasonic image is taken as a texture having cluttered directions, the multi-directional property of Gabor wavelets are used to process the image, and intermediate images in different filtering directions are fused by taking a maximum value, so as to obtain an intermediate image having a weakened texture effect and an enhanced difference between a foreground and a background. For the feature of a weak edge of an ultrasonic image, a concept of multi-scale is used to improve the traditional LIC method, Gaussian convolution kernels having different variances are set, and a final edge is obtained by means of average fusion.