[image segmentation] vein segmentation based on directional valley detection with matlab code

1 Content introduction

A digital vein image segmentation method and its system based on directional valley detection , terminal , It includes the following steps : step 1, Receive the finger vein image collected by the image acquisition module ; step 2, Perform ridgelet transform on the intercepted finger vein image for image enhancement ; step 3, The valley region is extracted from the enhanced vein image ; step 4, The obtained vein image is divided into three areas : Background area , Fuzzy area , Foreground area , And the three regions are divided by threshold three times ; step 5, Perform edge detection on the obtained segmented image , Output the processed segmented image . The system and method of the invention are based on some internal information contained in the vein image, such as shape , Step property , An algorithm based on the characteristics of direction , It can accurately extract the vein features of interest in the image , Reduce extraction error features .​

2 Simulation code

function shuchutuxiang=caijian(shurutuxiang,caijianshu)%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% Input parameters shurutuxiang and caijianshu Represents the number of points on the branch to be trimmed according to the input binary image % Input parameters indicate shuchutuxiang Trimmed image % The idea is that every iteration removes the end point, and if there is an intersection, it stops .[m,n]=size(shurutuxiang);shurutuxiang=shurutuxiang;hh=zeros(m+2,n+2);canzhao=zeros(m+2,n+2);canzhao(2:m+1,2:n+1)=shurutuxiang(:,:);hh(2:m+1,2:n+1)=shurutuxiang(:,:);for l=1:caijianshufor i=2:m+1    for j=2:n+1        if hh(i,j)~=0&sum(sum(hh(i-1:i+1,j-1:j+1)))==2&sum(sum(canzhao(i-1:i+1,j-1:j+1)))<4          shurutuxiang(i-1,j-1)=0;        end    endendhh(2:m+1,2:n+1)=shurutuxiang(:,:);endshuchutuxiang=shurutuxiang;​​​​

3 Running results

4 reference

[1] Long Anchuan , Tang Min , Zeng Yao , etc. . Digital vein image segmentation method and system based on directional valley detection , terminal :, CN108010035A[P]. 2018.

[2] Zhangsuoping . Wave direction detection based on mathematical morphology image segmentation [J]. Marine technology , 2007, 26(4):6.

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