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Not getting correct vein pattern from image after mophological operation

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Balaji M. Sontakke
Balaji M. Sontakke on 12 Apr 2018
Sir, in attached image is output of some morphological operation but still some unwanted region is present how to remove this.
clc; close all; %% myFolder = 'E:\MATLAB\R2016b\bin\img\PCA\my_PhD_Programs\Jermanfilter\db\Train'; roiFolder = 'E:\MATLAB\R2016b\bin\img\PCA\my_PhD_Programs\Jermanfilter\dbROI'; filePattern = fullfile(myFolder, '*.bmp'); dataFiles = dir(filePattern);
for k=1:length(dataFiles), [pathstr,name,ext] = fileparts(dataFiles(k).name); fullFileName = fullfile(myFolder,name); currFile = fullfile(myFolder,name); currFile1 = fullfile(roiFolder,name); fname1 = sprintf('%s.bmp',currFile); fname2 = sprintf('%s.bmp',currFile1); I=imread(fname1); %I = imread('201.bmp');
% preprocess the input a little bit Ip = single(I); thr = prctile(Ip(Ip(:)>0),1) * 0.9; Ip(Ip<=thr) = thr; Ip = Ip - min(Ip(:)); Ip = Ip ./ max(Ip(:));
% compute enhancement for two different tau values %V1 = vesselness2D(Ip, 0.5:0.5:2.5, [1;1], 1, false); V2 = vesselness2D(Ip, 0.5:0.5:2.5, [1;1], 0.5, false);
subplot(2,2,1);
imshow(V2);
title ('Jerman filter');
skel = bwmorph(V2,'thin',Inf);
subplot(2,2,2);
imshow(skel);
title ('thin');
B = bwmorph(skel, 'branchpoints'); E = bwmorph(skel, 'endpoints');
[y,x] = find(E); B_loc = find(B);
Dmask = false(size(skel)); for k = 1:numel(x) D = bwdistgeodesic(skel,x(k),y(k)); distanceToBranchPt = min(D(B_loc)); Dmask(D < distanceToBranchPt) =true; end skelD = skel - Dmask;
subplot(2,2,3); imshow(skelD);
hold all; [y,x] = find(B); %plot(x,y,'ro')

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