Grayscale (SLG) to HUE

[bmat]

Hello,

I have a really simple question: after processing the images coming from my camera, I get grayscale (SGL) images. I would like to colorize those images with a cyclic color palette (Type HUE woul be perfect!).

Any simple Ideas? 😉

Thank you in advance.

Regards,

mathias

[reschri]

I am not quite sure what you mean with "colorize". Do you want to transform a grey-white picture into a for example red-white picture?

[bmat]

Hello Reschri,

Thanks for your interest!

Colorize is not the right word, you are right. I have a picture (SLG values) that I would like to display pseudo-coloured. I would like the color palette to be cyclic (maximum value has the same color as minimum value).

[BruceAmmons]

A few of methods:

Have you tried changing the display palette?  There are a couple of nice color mappings, but neither cycle.

You can create a palette lookup table that contains a color for each level of grayscale.  That might take a little work, but you get exactly what you want.

Quick and dirty: create a couple of images the same size with the saturation and intensity levels you want, then combine them with your grayscale image (as hue) into a color image.  I would start with levels of 128, then adjust.

Bruce

[bmat]

Hello BruceAmmons,

Thank you for your answer. Indeed, there are some nice color palette alredy built-in, unfortunately neither cycle... It will come may be...

I will create my own color palette as you proposed, do you know if I can create a 16 bits one or if I am limited with Labview to 8 bits?

Mathias

ZHAW

[reschri · Accepted solution]

Unfortunately not, look at this:

http://digital.ni.com/public.nsf/allkb/1E2B138843AF58D9862579D4006E373A

[bmat]

I got it... Thank you very much!

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