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Karthik A

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09 Jun 2004 Gaussian Pyramid - Expand and Reduce routines This contains set of routines, for the 'expand' and 'reduce' operations of Gaussian Image Pyramids. Author: Karthik A expand, gaussian pyramid, transforms, reduce 16 12
  • 3.11111
3.1 | 9 ratings
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28 Jun 2010 Gaussian Pyramid - Expand and Reduce routines This contains set of routines, for the 'expand' and 'reduce' operations of Gaussian Image Pyramids. Author: Karthik A Rachel

Bad MATLAB implementation.

10 Sep 2008 Gaussian Pyramid - Expand and Reduce routines This contains set of routines, for the 'expand' and 'reduce' operations of Gaussian Image Pyramids. Author: Karthik A sharif, ss

i could not undrestant what does means ?
21 Mar 2007 Gaussian Pyramid - Expand and Reduce routines This contains set of routines, for the 'expand' and 'reduce' operations of Gaussian Image Pyramids. Author: Karthik A Badshah, Amirzeb

it helped me a lot
23 Aug 2006 Gaussian Pyramid - Expand and Reduce routines This contains set of routines, for the 'expand' and 'reduce' operations of Gaussian Image Pyramids. Author: Karthik A Yang, Deshan

There are an error with the 'expand' function.

The most inner loop should be as:

                if ( (floor(pixeli) == pixeli) & (floor(pixelj) == pixelj ) )
                    pixeli = pixeli + 2;
                    pixelj = pixelj + 2;
                    tmpval = I (pixeli, pixelj) * Wt(m + 3) * Wt(n + 3);
                    A = [A, tmpval] ;
                end

Otherwise, the expanded image will have 1 pixel shifting to right and down.
01 Aug 2006 Gaussian Pyramid - Expand and Reduce routines This contains set of routines, for the 'expand' and 'reduce' operations of Gaussian Image Pyramids. Author: Karthik A S., P.

Changing the line "A = [A, tmpval] ;" to "A = A + sum(tmpval);" highly increases speed because memory has not to be allocated in each loop.
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expand, gaussian pyramid, reduce, transforms
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(last 30 days) 		Comments Rating
09 Jun 2004 Gaussian Pyramid - Expand and Reduce routines This contains set of routines, for the 'expand' and 'reduce' operations of Gaussian Image Pyramids. Author: Karthik A expand, gaussian pyramid, transforms, reduce 16 12
  • 3.11111
3.1 | 9 ratings

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