Left Toolbar > Compose Nodes >
Curve Sample Image
The Point Sample Image node allows you to extract the rgbo value of an image selected position.
input
Img 1
output
Position 0, 0. rgbo: r: 0.77, g:0.07, b:0.04, o:1
On the left toolbar choose Compose Nodes > Curve Sample Image
Drag the Curve Sample Image icon into the Node Graph.
Connect the output of an image node into the image input.
image
curve
rgbo
Sample
Radius Select the radious of the area to be analized. Default: 1 px.