How to fix negative numbers in u16 images

[imageproblems]

Hello,

I have a 2d array that is u16 (0-65K) and trying to subtract a "dark" from it. The problem is that it sometimes yields to negative numbers and it does a wrap around and shows the values as 65K. Is there a truncate function or something to make them zero. Sorry if this is a simple question. I have only been doing labview for a couple of weeks.

Thanks

[cirrusio · Accepted solution]

imageproblems,

Have you considered casting the U16 to I32, making your subtraction, coercing the value such that it does not fall below zero and finally casting it back to U16? 

I don't know but this might work for you...

Cheers, Matt 

Message Edited by mtat76 on 05-17-2010 11:08 PM

[imageproblems]

Thank you. That works.

[imageproblems]

Sorry, I meant to click the solution on your post and clicked it on mine. Wheres the undo button. Thanks again.

[Ben]

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imageproblems wrote:
Sorry, I meant to click the solution on your post and clicked it on mine. Wheres the undo button. Thanks again.

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THe Options drop-down (top right) has a option to remove the solution marking.

Ben

[imageproblems]

Sorry. I dont see it. I see an options menu on each reply but that has nothing about clearing it. Looking at the screen, i see a thread option on the left but that has nothing about clearing the solution either.

[cirrusio]

Haha...Ben's the master!  Thanks, Ben.

[RavensFan]

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imageproblems wrote:

Sorry. I dont see it. I see an options menu on each reply but that has nothing about clearing it. Looking at the screen, i see a thread option on the left but that has nothing about clearing the solution either.

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The options menu to the upper right of the message that you incorrectly marked.

[imageproblems]

Got it.

Thanks sorry for the hassle.

[muks]

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Huh????