mask

Use an image as a mask for another image.

Given these input images:

var i1 = g.import('butterfly.jpg');
var i2 = g.import('butterfly-mask.jpg');
[i1, i2];

The darker pixels in the source image (the mask) will make the pixels in the destination image become more transparent.

var i1 = g.import('butterfly.jpg');
var i2 = g.import('butterfly-mask.jpg');
g.mask(i1, i2);

The reverse can be achieved by inverting the masking image:

var i1 = g.import('butterfly.jpg');
var i2 = g.import('butterfly-mask.jpg');
g.mask(i1, g.invert(i2));

Parameters

• image: The input image (the destination).
• mask: The masking image (the source).

Related Guides

• Imaging