Re: Wand Tool mode for thresholded image
Posted by
Gabriel Landini on
Jul 30, 2014; 9:13am
URL: http://imagej.273.s1.nabble.com/Wand-Tool-mode-for-thresholded-image-tp5008918p5008956.html
On Tuesday 29 Jul 2014 21:59:48 you wrote:
> Thanks, Michael. I get it now. What I don't understand is why this precision
> mismatch only shows up occasionally. The two images I previously attached,
> were both very similar 32-bit images. The Wand Tool contour in one of them
> traced the thresholded region closely. In the other, the contour was a few
> pixels inside the thresholded region.
"Similar" does not imply that the LUT has the same boundaries in both images,
as these are perhaps determined from the image greyscale range.
You could go through the image pixel by pixel and threshold each one based on
the exact threshold value you require, without using the thresholder applet.
Hope it helps
Gabriel
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