Apply adaptive histogram equalization at the bottom part of the image

Question

SS 2021-4-21

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/808820-apply-adaptive-histogram-equalization-at-the-bottom-part-of-the-image

编辑： SS 2021-4-25

Hi. I have a set of 2000 tif images of size 1024 X 1024 pixels in a folder and I want to apply histogram equalization only at the bottom part of the image. Say from y = 800 px to y = 1024 px, and make the rest (top part) of the image black. How can I incorporate this in the below code?

% Location of the original files
d = 'D:\Raw_Images\';
% Location of the new files
drive1='D:\New Imagews\';
for i=1:2000
    num=sprintf('%03.0f\n',i);
    name=strcat(d,'B_',num,'.tif');
    I=imread(name);
    J=adapthisteq(I,'NumTiles',[8 8],'clipLimit',0.1,'Distribution','uniform');
  
   imwrite(J,strcat(drive1,'B_',num,'.tif'),'Compression','none');
 
end

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

DGM 2021-4-21

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/808820-apply-adaptive-histogram-equalization-at-the-bottom-part-of-the-image#answer_681230

在 MATLAB Online 中打开

Something like this.

inpict=imread('someparticularimage.tiff');
tophalf=zeros([799 size(inpict,2) size(inpict,3)],class(inpict));
bothalf=inpict(800:end,:,:);
for c=1:size(inpict,3)
	bothalf(:,:,c)=adapthisteq(bothalf(:,:,c),allmyfavoriteargumentsgohere);
end
outpict=cat(1,tophalf,bothalf);