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diff --git a/man/blind-invert-luma.1 b/man/blind-invert-luma.1 new file mode 100644 index 0000000..2963c11 --- /dev/null +++ b/man/blind-invert-luma.1 @@ -0,0 +1,43 @@ +.TH BLIND-INVERT-LUMA 1 blind +.SH NAME +blind-invert-luma - Invert the luminosity of a video +.SH SYNOPSIS +.B blind-invert-luma +[-iw] +.I mask-stream +.SH DESCRIPTION +.B blind-invert-luma +reads a video from stdin and a mask video from +.IR mask-stream . +The video is printed to stdout, with the luminosity +inverted where, in +.IR 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. +.P +If stdin is longer than +.IR mask-stream , +the remainder or stdin is printed without any changes. +If stdin is shorter than +.IR mask-stream , +the remainder of +.I mask-stream +is ignored but may be partially read. +.SH OPTIONS +.TP +.B -i +Invert the luminosity in +.I mask-stream +before calculating the product of the luminosity and +the alpha value. +.TP +.B -w +Instead of using CIE Standard Illuminant D65 as the +whitepoint, use the X and Z from each pixel in +.I mask-stream +for the whitepoint. +.SH AUTHORS +Mattias Andree +.RI < maandree@kth.se > |