Binary threshold - U16 Image

I have a simple example which I have attached (Vision 2013 but can save for previous if need be) in which I would like to apply binary thresholding to a range of values (minimum --> mean) in a U16 image. This example is based on the particle analysis binary threshold example included with Vision for U8 images. The thresholding does not appear to be working properly (to hilte the range of values red) and areas outside of the range appear to be getting thresholded as well. Ultimately, what I would like to be able to do is actually display the gray scale (rather than binary) image and have the thresholded range show in red against the gray scale image.
Any thoughts.
Solved!
Go to Solution.
Attachments:
U16 Threshold Example.llb ‏4 KB

Bruce -
Thanks for taking the time to reply. The first question that needs to be answered is if the binary thresholding VI is properly working to hilite in red the range of values I have specified (non-zero min --> mean) for a U16 image. The U8 version of this example VI works just fine. I wanted someone to run my VI and see that what is getting hilited does not seem to match up with the non-zero min --> mean range.
In terms of thresholding on top of an actual gray scale image, another idea is to just find the pixels that fall within the range I have specified, and draw an overlay of points on top of the image. That should work fine. However, this is mainly for visualization purposes.
I really need the thresholding itself to work properly for 16-bit images in order to do a particle analysis. So I needed a sanity check to see if somehow I am doing something wrong in the thresholding (this is a pretty simple VI, not sure what could be going wrong, so am wondering if it is not properly operating on U16 data).
Sincerely,
Don

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Last edited by wankel (2009-04-24 21:15:46)

Binary threshold - U16 Image

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