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speed up image processing [message #67437]

Thu, 23 July 2009 05:53

Klemen
Messages: 80
Registered: July 2009

Member

Hi, I quite new to IDL, I know its basics, and I have recently found
out that using the right approach can significant speed up the
processing. My problem is, I have a 2D array and I would like to
compute a minimum and some additional stuff for each input image pixel
from the predefined vector that stretches out of each pixel.
Currently, I use simply 2 for loops. Is there a way to do this faster
- removing for loops?

Thank you, Klemen

vector_indx = [ncols+1, 2*ncols+2, 3*ncols+3]

for j = 0,nrows do begin
for i = 0,ncols do begin
x = image(i,j) ;read the current pixel data
indx = j*ncols + i ;convert to 1D index
image_out(i,j) = min(image[vector_indx+indx])
...
endfor
endfor

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speed up image processing

By: Klemen on Thu, 23 July 2009 05:53

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