Extract RGB value

[shingy]

i was wondering if anyone know how to extract or analysis 

RGB value from an image.

i don't know how to start with this topic.

any help is much appreciated.

thanks

Shing

[Pnt]

Although i have not done it...

Have you try , the "Graphics and sound" > "Graphics Formats" functions?

You can read a file, unflatten pixmap and at "Picture Functions" convert it to RGB values with "Color to RGB"

[Ray.R]

Are you trying to get RGB values for pixels in an image (ie: jpg or png, etc)?

Or are you trying to get the RGB value of a solid color as in the color of a control or indicator?

[shingy]

thank you for your reply quickly Pnt and Joelabview !!

i want to grab the image from vision and get the RGB value

from it  and show in the front pannel .

i have try sound and grapic ,but i think it is not really work.

have any other method to do it ?

Thanks

Shing

[falkpl]

If you are doing vision using thw vision development module there is an extract color plane vi which will extract RGB or Hue, saturation, lum, value or intensity as well.

Paul

[shingy]

hi , thanks all of your help...paul , mike , Ravens Fan

now i can extract the RGB value from the image by vision

but i don't know how to  differentiate between different colour

 if those color are in the same image.

which icon that i can use for this application ?

or any other method ?

thanks

shing

[MikeS81]

Hi shingy,

you can use the "IMAQ RGB2Color 2" function to convert your RGB value to HSV. Then you can differentiate the color by the H value.

Mike

[shingy]

hi ,

thank you very much mike .

I know what you are talking about and get your idea

since within H can show which color by angle.

i go ahead to try it . thank you !!

shing