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Any image processing nerds?

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Old 09-20-2006, 05:15 PM
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Red X
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Default Any image processing nerds?
This is a long-shot - but anyone in here familiar with Matlab and/or image processing techniques:

specifically - Filters (Gaussian, Laplacian), Edge detection ?
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Old 09-20-2006, 06:22 PM
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ReVenGe
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well.... not a nerd.... but i've done some filter things..... what you lookin for?
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Old 09-20-2006, 07:19 PM
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I need to implement a derivative of Gaussian function for a 2d image. I'm returning the derivative in the x and y directions.. My question is, do the arrays have to be the same size after I convolute the kernel with the matrice in the x and then in the y?

Convoluting the x and y just means convoluting each individual row with the kernel for x, and column for y?
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Old 09-20-2006, 07:23 PM
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uhhh.. ??
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Old 09-20-2006, 07:25 PM
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Originally Posted by Red X
I need to implement a derivative of Gaussian function for a 2d image. I'm returning the derivative in the x and y directions.. My question is, do the arrays have to be the same size after I convolute the kernel with the matrice in the x and then in the y?

Convoluting the x and y just means convoluting each individual row with the kernel for x, and column for y?
And I just had an aneurism.
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Old 09-20-2006, 07:27 PM
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i dont think so :hsdunno:

that seems like a realy complicated way to use a blur.... are you just trying to mask it?
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Old 09-20-2006, 07:48 PM
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Originally Posted by ReVenGe
i dont think so :hsdunno:

that seems like a realy complicated way to use a blur.... are you just trying to mask it?
No I need to soften the image before I can do edge detection.
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Old 09-20-2006, 07:55 PM
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Originally Posted by Red X
I need to implement a derivative of Gaussian function for a 2d image. I'm returning the derivative in the x and y directions.. My question is, do the arrays have to be the same size after I convolute the kernel with the matrice in the x and then in the y?

Convoluting the x and y just means convoluting each individual row with the kernel for x, and column for y?

i think if that had been written in mandarin chinesse, i would have almost the same comprehension level of all that

sefl-wned:

LOL
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Old 09-20-2006, 08:33 PM
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Draconius
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Originally Posted by Red X
I need to implement a derivative of Gaussian function for a 2d image. I'm returning the derivative in the x and y directions.. My question is, do the arrays have to be the same size after I convolute the kernel with the matrice in the x and then in the y?

Convoluting the x and y just means convoluting each individual row with the kernel for x, and column for y?
You are definately in need of a nerd bigger than yourself...
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Old 09-20-2006, 08:42 PM
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You an EE major or somethin?
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