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Can i avoid the loop,help me speed up,thanks [message #61892]

Mon, 04 August 2008 06:29

Rongchang Chen
Messages: 12
Registered: August 2008

Junior Member

I wrote a procedure to create sinograms from projections in
tomography,the main part of procedure please see below.
For large size and number projections,it's very very slow.
Can i avoid the loop(one is OK) to speed up,or another way to create
sinograms?
Thank you very much!!

************
n_sinogra:number of sinogram
n_projection:number of projection
files_projection:a string vector contain Directory and name of
projection
files_sino:a string vector contain Directory and name of sinogram

for jj = 0,n_sinogram-1 do begin
print,'now creating',jj+1,'th sinogram'
sino = fltarr(sizepro[0],n_projection)

for ii=0, n_projection-1 do begin
image = float(read_image(files_projection[ii]))
some processing of image
sino(*,ii) = image(*,jj)
endfor

write_tiff,files_sino(jj),sino,/short,/float
endfor
*****************

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[Message index]

		Can i avoid the loop,help me speed up,thanks By: Rongchang Chen on Mon, 04 August 2008 06:29
		Re: Can i avoid the loop,help me speed up,thanks By: Rongchang Chen on Tue, 12 August 2008 05:47
		Re: Can i avoid the loop,help me speed up,thanks By: Jean H. on Mon, 11 August 2008 10:20

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