{namespace i=TYPO3\CMS\Install\ViewHelpers}

Combining images

This verifies that the ImageMagick tool, 'combine'/'composite', is able to combine two images through a grayscale mask.

If the masking seems to work but inverted, that just means you'll have to make sure the invert flag is set (some combination of im_negate_mask/im_imvMaskState)

Combining images