converting U8 image into RGB

[guilio_2008]

I have a pixelink camera that when I run through the IMAQdx vi's, it produces a BW image.  When I view the image, I can select from the palette bar when I right click on the image out display and select rainbow, temperature, etc....but I can't save these colored images.  I'm guessing that the image out viewer converts the U8 image into a RGB image for display.  I would expect that there would of been a VI (or maybe there is and I haven't seen it) that would do this task and allow you to save the image as a RGB.  Is there a VI to do this?

Thanks,

guilio_2008

[Julien_31]

There's a function in LV to convert color (U32) into RGB : "Color to RGB.vi"

You can find this VI in the function palette : Programming > Graphics & Sound > Picture Functions > Color to RGB.vi

Best,

J.

[10Degree]

guilio,

It sounds like you would like to save a bitmap of the image rendered in the control when viewing one of the mappings - temperature, rainbow, etc? 

If you have access to the NI Vision Development module, you can use IMAQ GetPalett.vi to generate the R, G, and B lookup tables to remap pixel values to render temperature or rainbow.  You can then use IMAQ ReplaceColorPlane.vi to combine your R, G, & B planes into an RGB image, and IMAQ Write File 2.vi to write your file as a bitmap.

-cb

[10Degree]

The IMAQ UserLookup.vi will re-map pixel values.

[guilio_2008]

I tried doing just the pallette, but it doesn't change the image when I have on front panel.  I'm guessing you need to use the open image window to get this working?  Any examples? 

Thanks,

guilio

[Root_Canal]

Do you have the NI Vision Development Module? If so, this sloppy little bit of code will let you change an image palette on the fly, then save out a copy of the color image you see. You can also choose a user defined palette and create your own palette with the color ramp next to the window.

 

-root

Message Edited by Root Canal on 05-05-2009 11:11 AM