Is it possible to resize image without changing its total number of pixels?
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Image Analyst on 19 Apr 2022
Edited: Image Analyst on 19 Apr 2022
@Abdul Hannan Qureshi if you resize the image matrix variable, it will have a different number of elements, not the same.
You can display the tick marks in real world units, such as cm or m, if you use the 'XData' and 'YData' options for imshow().
However regionprops() always measures in pixels so to get from pixels into cm you'd have to multiply by a cmPerPixel scaling/calibration factor that you computer. The attached demo walks you through that process.
More Answers (1)
DGM on 19 Apr 2022
Edited: DGM on 19 Apr 2022
Maybe something like:
A = imread('cameraman.tif');
[h w] = size(A); % [256 256]
imshow(A,'xdata',[1 w]/2,'ydata',[1 h]/2)
plot(64,64,'yo','linewidth',2) % just for demonstration
Note that while the image is still 256x256, the image is plotted on a half-size grid. The NW pixel is now at [0.5 0.5] instead of [1 1], and the center of the image is now at [64 64]. The same can be done with image()/imagesc(). I can't really demonstrate imdistline() in the forum editor, but you should be able to use it just fine.