Read x,y coordinates from txt file and orient images

Question

Stelios Fanourakis 2018-5-2

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https://ww2.mathworks.cn/matlabcentral/answers/398541-read-x-y-coordinates-from-txt-file-and-orient-images

回答： Stelios Fanourakis 2018-5-2

Hi I have a txt file with rowsxcolumns of x,y values. It's 15x2, for 15 images. I want to read from that txt file the x,y positions that my images will have. Already, I tried this.

filePatternu = fullfile(destinationFolder, '*.dcm');
allFiles = dir(filePatternu);
for k= 2: 1: length(allFiles)
   baseFileName = allFiles(k).name; % e.g. "1.png"
   fullFileName = fullfile(destinationFolder, baseFileName); 
   I = dicomread(fullFileName); % img respresents input image.
   pause(2)
   [x, y] = textread('imgpositions.txt', '%f , %f');
   figure
   imshow(I, [x y])
   drawnow;
end

Although, I get no error, still I get no outcome. imshow is not working and no image is being seen.

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Ameer Hamza 2018-5-2

imshow(I, [x y]) will only specify the display range of image I (i.e. calculation of pixel intensity). Are you trying to draw the points on the image?

Stelios Fanourakis 2018-5-2

No. Txt file contains x,y values that the images will have. I need to link the txt with the images, and if I change a value to the txt then the images will have other position

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