blind-colour-srgb.1 (1865B)
1 .TH BLIND-COLOUR-SRGB 1 blind 2 .SH NAME 3 blind-colour-srgb - Convert sRGB for use with blind-single-colour(1) and blind-colour-matrix(1) 4 .SH SYNOPSIS 5 .B blind-colour-srgb 6 [-% 7 .IR format ] 8 [-d 9 .IR depth ] 10 [-l] 11 .I red 12 .I green 13 .I blue 14 .SH DESCRIPTION 15 .B blind-colour-srgb 16 converts the sRGB colour with the specified 17 .IR red , 18 .IR green , 19 and 20 .I blue 21 values to CIE XYZ and prints the result to stdout 22 in plain text, such that it can be used with 23 .BR blind-single-colour (1). 24 If 25 .BR blind-single-colour (1) 26 is modified in the future to use another colour 27 model than CIE XYZ, 28 .B blind-colour-srgb 29 will be modified to convert the values into 30 that colour model. 31 .P 32 .IR red , 33 .IR green , 34 and 35 .I blue 36 may be floating-point values and may be negative 37 or beyond the maximum value encodable in an 38 unsigned integer with 39 .I depth 40 bits. 41 .SH OPTIONS 42 .TP 43 .BR -% \ \fIformat\fP 44 Selects in what format parameters are printed. 45 .I format 46 may include the prefix 47 .B + 48 that specified that non-negative values should be prefixed with a 49 .BR + . 50 After any prefix, there may be a positive number specifying 51 the percision of the output, optionally followed by either of 52 the letters 53 .BR a , 54 .BR e , 55 .BR f , 56 other 57 .B g 58 (other their synonymous uppercases), 59 at most once, with the same semantics as in 60 .BR printf (3). 61 .B f 62 is used if this letter is omitted. 63 64 If ommited, 65 .B 25f 66 is used. This default is selected for ease of 67 interoperability with other software, however, 68 .B a 69 is recommeded to improve performance and remove 70 truncation error. 71 .TP 72 .BR -d " "\fIdepth\fP 73 If all three parameters are 74 .RI 2^ depth -1, 75 the colour is 100 %. (default: 8) 76 .TP 77 .BR -l 78 The values are encoded linearly instead of with 79 the sRGB transfer function. 80 .SH SEE ALSO 81 .BR blind (7), 82 .BR blind-single-colour (1), 83 .BR blind-colour-matrix (1), 84 .BR blind-colour-ciexyz (1) 85 .SH AUTHORS 86 Mattias Andrée 87 .RI < maandree@kth.se >