2) Sharpen: And experiment with imfilter and fspecial Another sort of filter that can be applied to an images it a sharpening filter. More, or less, this will accentuate any differences in the image. The opposite of a blurring technique. The only problem with this process is that noise is also accentuated, possibly deteriorating the image. The results are hard to notice, you will need to zoom in on the output images to see the full effect.
Source Image

2) Sharpen: And experiment with imfilter and fspecial

Another sort of filter that can be applied to an images it a sharpening filter. More, or less, this will accentuate any differences in the image. The opposite of a blurring technique. The only problem with this process is that noise is also accentuated, possibly deteriorating the image. The results are hard to notice, you will need to zoom in on the output images to see the full effect.

Source Image

Type of filter	Output
Alpha: .1
Alpha: .2
Alpha: .4
Alpha: .8
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2) Sharpen: And experiment with imfilter and fspecial

Type of filter

Output