how can i use imdistline to calculate the pixel in the image?

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norfaizayu 2012-2-2

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评论： Varian Adisuryo 2016-8-18

any one has example about the imdistline? i need the example to view and will apply in my project.

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Razvan 2012-2-2

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Here is an example:

 % load an image
 load flujet
 imagesc(X);
 % set up the measuring tool
 h = imdistline(gca);
 api = iptgetapi(h);
 api.setLabelVisible(false);
 % pause -- you can move the edges of the segment and then press  a key to continue
 pause();
 % get the distance
 dist = api.getDistance();
 % print the result
 fprintf('The length of the segment is: %0.2f pixels \n', dist)

I never knew there was a built-in imdistline - I've always used improfile(). But anyway, in your own personal overridden version of imdistline - you know the one where for some reason you did not take Walter's advice to rename it - you're missing "function imdistline(handleToFigure)" as the first line of your m-file. Of course you know that must replace the word "handleToFigure" with whatever handle name you're using to refer to the figures with.