How to extract (R,G,B) value from an image?

[Hussain]

Sir, I need to extract the (R,G,B) components from the center of the image attached here and show the R, G and B value on the screen. Is this possible with app inventor?? If possible please give me the process flow how to do it.. 

[ScottFerguson]

You would likely need the canvas GetBackgroundPixelColor block for this to get the MITAI color value.

Then you would use the color SplitColor block to get the RGB values into a list.

Here is an example app:

note: the last set of blocks gets the Green value, not the Blue value as indicated in the comment :(

[Abraham Getzler]

(Added to my FAQ)

ABG