Posted by
Abdulelah on
URL: http://imagej.273.s1.nabble.com/Problem-with-ImageJ-and-Matlab-image-analysis-tp5019978p5019985.html
Sorry for the delayed response
As Alex request, here a full details and example of points I did before:
I have a data set (CT scan images) of 430 slices. I import it to imageJ and also have it open in Matlab:
Examples:
Point 1
on ImageJ
x=180, y=424, z=243 (Slice # 244, as it shown in the top left corner on the window of the image)
on Matlab
Y(181, 425, 244), The reason I add 1 to all value because x, y, z starts from zero in imageJ but from 1 in Matlab as it should have a real positive value. Also, will explain what I also did be the end.
Pixel size= 1
Matlab ans= -214, ImageJ Value= -416(584) Difference= 202
---------------------------------------------------------------------------
Point 2
on ImageJ x=358, y=509, z=261 (Slice 262)
on Matlab Y(359, 510, 262)
Pixel size= 1
ans= -154, ImageJ value= -127(873) Difference= 30
---------------------------------------------------------------------------
Point 3
on ImageJ x=390, y=360, z=261 (Slice 274)
on Matlab Y(391, 361, 274)
Pixel size= 1
Y ans= -398, ImageJ value= -507(493) Difference= 109
----------------------------------------------------------------------------
When I saw there was some difference in the grey values between the 2 softwares I tried in ImageJ to change the x or y or even the slice (all around the point I measured before and even one to two slices up and one to two slices down) just to get the same number (ans) I have in Matlab but unfortunately I didn't find any match.
Thank you.
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