Replace One Color With Another in Color Table

[DonRoth]

Hello - I've written a simple VI that when one moves the cursor, it grabs the 'color' value at that location and allows one to replace it and all locations of similar color value with a replacement color.  I first normalize the image to between 0 and 255 to correspond with 256 values in an 8-bit image.   For a simple image, I have just a 2-color (binary) image composed of 0 and 255.

I move the cursor, which indexes the image and grabs the value corresponding to a gray value between 0 and 255.  I then use this as the index to the new color, and replace the color at that index with the replacement color.

When I move the cursor, it indicates to me whether I am on a '0' or '255' but the color replacement is not made properly (although the color ramp does seem to indicate it should be).

This would seem to be a simple task.  What am I doing improperly?

Thanks,

Don

[Mark_Yedinak]

Your example is missing subVIs and won't open.

[DonRoth]

Hi Mark

I used LabVIEW 2009 64-bit to create the LLB which appears to have caused the problem with missing subVIs.  I redid the save with LabVIEW 2010 32-bit.   See if this works.

Don

[Mark_Yedinak]

I don't have LV 2010 insatlled yet. We generally don't make the transition right away.

These are realtively small VIs so just attach them individually saved for 2009.

[DonRoth]

Here are the 3 subVIs (I guess the forum only allows 3 attachments).  Next message contains the top level VI to run....Don

[DonRoth]

Here is the top-level VI.  Tell Doug Fox I said hello.

Thanks for looking.

Don

[DonRoth]

Wait - these are still LabVIEW 2010.  Let me repost as LabVIEW 2009 in a bit.....Don

[DonRoth]

This LLB should open in LabVIEW 2009....Don

[Mark_Yedinak]

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@DonRoth wrote:

Tell Doug Fox I said hello.

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I don't really run into him. Most people like to stay clear of engineering.

[DonRoth]

Doug, even as a CFO, actually loves science and is a great DIYer.  He has read more Scientific America articles than I have and has carpenter ancestry.  Sorry folks to get off topic....Don