如何在matlab上删除图像的阴影？ [英] How to remove shadow of image on matlab?

问题描述

正如你在图像中看到的那样，我使用Otsu方法隔离对象，但是阴影会使结果变得无效。如何隔离没有阴影的物体？

As you can see in image, I isolate objects using Otsu method, but shadows make the result innacurate. How to isolate object without shadow?

推荐答案

I = imread('YgmAf.jpg');  % your original image
imagesc(I)

I=rgb2hsv(I);
I1=I(:,:,2);   % change to hsv and select the channel with most clear contrast between object and shadow

thresholded = I1 > 0.23; %% Threshold to isolate lungs
thresholded = bwareaopen(thresholded,100);  % remove too small pixels
I2=thresholded.*I1;
I3=edge(I2,'canny',graythresh(I2));  % ostu method
I3 = imfill(I3,'hole');
figure,imagesc(I3)  %object binary image

结果图片：

Result image:

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