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BLIND-ARITHM(1)		    General Commands Manual	       BLIND-ARITHM(1)

NAME
       blind-arithm - Perform simple arithmetic	on a video

SYNOPSIS
       blind-arithm [-axyz] operation right-hand-stream

DESCRIPTION
       blind-arithm  reads left-hand operands from stdin, and right-hand oper-
       ands from right-hand-stream, and	perform	the choosen operation over the
       read  values  and  prints the resulting video to	stdout.	 The operation
       with operands from the same colour parameters on	the  sames  pixels  on
       the same	frames on the two videos.

       If  stdin  is  longer than right-hand-stream, the remainder of stdin is
       printed without any changes.  If	 stdin	is  shorter  than  right-hand-
       stream,	the  remainder of right-hand-stream is ignored but may be par-
       tially read.

OPERATIONS
       add    Calculate	the sum	of the operands.

       sub    Subtract the right-hand operand from the left-hand operand.

       mul    Calculate	the product of the operands.

       div    Divide the left-hand operand by the right-hand operand.

       exp    Raise the	left-hand operand to the nth operand, where n  is  the
	      value of the right-hand operand.

       log    Calculate	 the  logarithm	of the left-hand operand and divide it
	      by the logarithm of the rigth-hand operand.

       min    Select the lowest	operand.

       max    Select the highest operand.

       abs    Calculate	the the	sum of absolute	value of the left-hand operand
	      subtracted by the	right-hand operand, and	the right-hand operand

OPTIONS
       -a     Do not modify the	alpha channel (the fourth channel).

       -x     Do not modify the	X channel (the first channel).

       -y     Do not modify the	Y channel (the second channel).

       -z     Do not modify the	Z channel (the third channel).

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

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

				   blind 1.1		       BLIND-ARITHM(1)

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

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