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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 operands from right-hand-stream, and perform the choosen operation over the read values and prints the resulting video to stdout. The opera- tion 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 Andre <maandree@kth.se> blind 1.1 BLIND-ARITHM(1)
NAME | SYNOPSIS | DESCRIPTION | OPERATIONS | OPTIONS | SEE ALSO | AUTHORS
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