blind-primary-key.1 (1618B)
1 .TH BLIND-PRIMARY-KEY 1 blind 2 .SH NAME 3 blind-primary-key - Replace a primary with transparency 4 .SH SYNOPSIS 5 .B blind-primary-key 6 [-1 | -2 | -3] [-gk] (-z 7 .I x1 8 .I y1 9 .I x2 10 .I y2 11 .I x3 12 .I y3 13 .RI [ white-x 14 .IR white-y ] 15 | 16 .I X1 17 .I Y1 18 .I Z1 19 .I X2 20 .I Y2 21 .I Z2 22 .I X3 23 .I Y3 24 .I Z3 25 .RI [ white-X 26 .I white-Y 27 .IR white-Z ]) 28 .SH DESCRIPTION 29 .B blind-primary-key 30 reads a video from stdin and replaces a primary 31 with transparency and prints the resulting video 32 to stdout. 33 .B blind-primary-key 34 internally converts colour space to the one 35 with the primaries whose CIE XYZ values are 36 .RI ( X1 37 .I Y1 38 .IR Z1 ), 39 .RI ( X2 40 .I Y2 41 .IR Z2 ), 42 and 43 .RI ( X3 44 .I Y3 45 .IR Z3 ) 46 and whose white point is the colour whose 47 CIE XYZ values are 48 .RI ( white-X 49 .I white-Y 50 .IR white-Z ), 51 and replaces the first primary with transparency. 52 If the white point is not specified, 53 CIE Standard Illuminant D65 is used. 54 .P 55 If the colour space is specified, no conversion 56 is done internally. 57 .SH OPTIONS 58 .TP 59 .B -1 60 Replace the the first primary with transparency. (Default.) 61 .TP 62 .B -2 63 Replace the the second primary, instead 64 of the first primary, with transparency. 65 .TP 66 .B -3 67 Replace the the third primary, instead 68 of the first primary, with transparency. 69 .TP 70 .B -k 71 Do not remove the keyed primary. 72 .TP 73 .B -g 74 The video is, with the exception of the keyed primary, 75 greyscale and the output video shall remain greyscale. 76 .TP 77 .B -z 78 Parse arguments as CIE XYY instead of CIE XYZ. 79 .SH SEE ALSO 80 .BR blind (7), 81 .BR blind-colour-ciexyz (1), 82 .BR blind-colour-srgb (1), 83 .BR blind-invert-matrix (1), 84 .BR blind-affine-colour (1) 85 .SH AUTHORS 86 Mattias Andrée 87 .RI < maandree@kth.se >