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I have just joined the list and would be very grateful for some help.
I am processing some head axial CT slices and extracting image objects by thresholding and using the Analyze Particles routine. The program seems to work fine on a stack of 512x512x512 images. However, when I look at the x,y coords for the particles they do not seem to match where I would expect them to be.
The problem is that in the results table particle #1, which is the head outline, has a Centroid of X=96 and Y=117. However, if I place my cursor over the center of the head outline X=237, Y=287 which seems perfectly reasonable. Can you please explain this discrepancy?
1 04:ID001122264 266 255 0 255 255 96 117 96 117 575 16 30 148 163 0 67738 255 NaN 100 264 230 80
2 04:ID001122264 29 255 0 255 255 93 53 93 53 49 90 43 7 20 0 7394 255 NaN 100 264 243 114
3 04:ID001122264 13 255 0 255 255 85 49 85 49 27 81 43 6 11 0 3407 255 NaN 100 264 227 115
4 04:ID001122264 7 255 0 255 255 86 61 86 61 17 85 57 3 7 0 1812 255 NaN 100 264 225 152
Thanks very much.
Douglas Benn
Dr. Douglas K. Benn BDS MPhil PhD DDR (RCR London)
Professor Emeritus
University of Florida
Apdo 189-4013
Atenas - 20501
Costa Rica
US toll free 1-888-609-6686
Tel/voice/fax: +506 2 446-6121 [country code is 506]
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