MATLAB: Get more from the borders of binary image…

Image Processing Toolboxmorphological operations

i obtained a binary image as shown in the first column…. i wanted to get more from the borders of image as shown in 2nd column… i used imdilate, but the edges i get is not smooth, how to get the edges more in shape as demonstrated in 2nd column…

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Use imresize() with the 'nearest' option, then crop. Figuring out where to crop to might be somewhat tricky.

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MATLAB: PCA OF AN IMAGE…

That is a dangerous way that you used size(). See Steve's blog: http://blogs.mathworks.com/steve/2011/03/29/even-more-information-about-the-size-function/

A common way to deal with your error is to just convert everything to double. But if you do then you need to use [] to see your images or else they will show up as all white because double images are expected to be in the range 0-1.

imshow(doubleImage, []);

The [] will adjust the display to handle whatever range your array may have, and not require it to be in the 0-1 range.

MATLAB: Recognise the test image…

This might be because the code must be finding the minimum distance between test images and images in database. And then outputting result according to the minimum distance found. It might have not been programmed for the kind of output u are expecting. Because for that, you have to specify some threshold value say, t. Then if Distance > t, it must output "Not Found" and if Distance < t, it must output the found image.

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MATLAB: PCA OF AN IMAGE…

MATLAB: Recognise the test image…

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