Cropping an image in matlab -

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Is it possible to crop an image with a particular curve? For pre-I want to extract the finger image from this image, but I do not want to crop it with a rectangle Enter the image details

You need a binary mask and the mask is shown on the alpha map Here is how to apply it in the form of 

  s = 100; H = imagesc (rand (s));% Some garbage% shows a circular mask dummy = meshgrid (-s / 2: s / 2-1). ^ 2; Distance squared from center mask = sqrt (dummy + dummy ') & lt; 20;% 20 is the radius of your mask% that you go here, set the image horizontally (h, 'alphabeta', mask);   
 Exporting it to PGN will serve as a job.  
 So in your case, you need to make your own mask, that means your bitmap image or parameter space (as I did it with the above cycle).

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