I can't do region of interest sharping of image why ?

Question

Ali Zulfikaroglu 2021-1-12

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/715068-i-can-t-do-region-of-interest-sharping-of-image-why

评论： Ali Zulfikaroglu 2021-1-16

在 MATLAB Online 中打开

I have a mammogram image. In Left side image, I used roipoly command and drawed that polygon .

and then I sharpened that polygon inside region but image blurred instead of sharpen

What's my mistake in my codes ?

I need that polygon inside region sharpened.

img=imread('image.jpg');
if(size(img,3)>1)
img=rgb2gray(img);
end
mask=roipoly(img);   
filt=fspecial('unsharp');
filt_img=roifilt2(filt,img,mask);
figure, imshow(filt_img);

0 个评论
显示 -2更早的评论隐藏 -2更早的评论

请先登录，再进行评论。

请先登录，再回答此问题。

Answer 1

Nitin Kapgate 2021-1-15

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/715068-i-can-t-do-region-of-interest-sharping-of-image-why#answer_598485

You can use the imsharpen function to sharpen a ROI in your image as illustrated here.

1 个评论
显示 -1更早的评论隐藏 -1更早的评论

Ali Zulfikaroglu 2021-1-16

在 MATLAB Online 中打开

I tried but I got still same image.

My code is in here which is applied your solution way with imsharpen.

I drawed my circle with roipoly function

and then filtered. But it looks crystallized which is showen above ,not sharpened.

img=imread('image.jpg');
if(size(img,3)>1)
img=rgb2gray(img);
end
mask=roipoly(img);   
f = @(x)imsharpen(x,'Amount',3)
filt_img=roifilt2(img,mask,f);
figure, imshow(filt_img);