maskimage - Mask an Image with Another Image
Masks a source image to this image using the average pixel color. A completely black pixel on the mask will make a pixel in the image completely transparent.
x
number
The horizontal position from the top left corner. Defaults to 0.
Example:
100
y
number
The vertical position from the top left corner. Defaults to 0.
Example:
200
file1
binary
Image to be masked.
file2
binary
Image to be used as mask.