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how laplacien it calculated?

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bil bbil
bil bbil 2014-9-5
回答： Image Analyst 2014-9-6
hi guys,, i have question about filter laplacien,,
[0 -1 0 * [28 31 30 = [ 0 2 3
-1 4 -1 30 32 27 = 4 13 0
0 -1 0 ] 29 27 30 ] 7 0 1 ]..
so I know that 13 is sum of multiplication ..but how value is calculated other(0 2 3,4,7,0,1,0)??

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Image Analyst
Image Analyst 2014-9-6
I have no idea. It's not a Laplacian as if you convolve a kernel with an image. It's not a convolution, correlation, or normalized cross correlation. I don't know what it is. Where did you get it, and why do you think it might be correct?

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