Left Toolbar > Compose Nodes > Image Map
The Image Map evaluates the ximage and yimage images at each pixel and generates a normalized image position that is used to evaluate the image to extract the final color.
For best results all input images should have the same position and size.
On the left toolbar choose Compose Nodes > Image Map
Drag the Image Map icon into the Node Graph.
Connect the output of an image node into the Image input in the Map node.
The image from which the colors are going to be extracted.
The image that provides the x coordinate to map image.
The image that provides the y coordinate to map image.
The modified image.
point linear cubic
Number of samples per pixel.