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BLIND-INVERT-LUMA(1)	    General Commands Manual	  BLIND-INVERT-LUMA(1)

NAME
       blind-invert-luma - Invert the luminosity of a video

SYNOPSIS
       blind-invert-luma [-iw] mask-stream

DESCRIPTION
       blind-invert-luma  reads	a video	from stdin and a mask video from mask-
       stream.	The video is printed to	stdout,	with the  luminosity  inverted
       where,  in  mask-stream,	 the  product  of the luminosity and the alpha
       value is	1, and unchanged where the product is 0. For  other  products,
       the result is linearly interpolated or linearly extrapolated.

       If  stdin is longer than	mask-stream, the remainder of stdin is printed
       without any changes.  If	stdin is shorter than mask-stream, the remain-
       der of mask-stream is ignored but may be	partially read.

OPTIONS
       -i     Invert  the  luminosity  in  mask-stream	before calculating the
	      product of the luminosity	and the	alpha value.

       -w     Instead of using CIE Standard Illuminant D65 as the  whitepoint,
	      use  the	X  and Z from each pixel in mask-stream	for the	white-
	      point.

SEE ALSO
       blind(7), blind-single-colour(1), blind-arithm(1),  blind-set-alpha(1),
       blind-set-luma(1), blind-set-saturation(1)

AUTHORS
       Mattias AndrA(C)e <maandree@kth.se>

				   blind 1.1		  BLIND-INVERT-LUMA(1)

NAME | SYNOPSIS | DESCRIPTION | OPTIONS | SEE ALSO | AUTHORS

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