blind-affine-colour.1 (1663B)

1 .TH BLIND-AFFINE-COLOUR 1 blind 2 .SH NAME 3 blind-affine-colour - Apply an affine transformation to the colours in a video 4 .SH SYNOPSIS 5 .B blind-affine-colour 6 [-alp] 7 .I matrix-stream 8 .SH DESCRIPTION 9 .B blind-affine-colour 10 reads a video from stdin and a matrix video from 11 .I matrix-stream 12 and multiplies colours from stdin with matrices from 13 .I matrix-stream 14 and prints the resulting video to stdout. 15 .P 16 Each frame in 17 .I matrix-stream 18 is a matrix and shall have the width and height 5. 19 Each pixel in a frame is a cell in the matrix, 20 the pixels luma is multiples by its alpha value 21 to determine the value of the matrix cell. 22 .SH OPTIONS 23 .TP 24 .B -a 25 The width and height of the matrix shall be 4 26 instead of 5 (reduced by 1) and the alpha values 27 of the pixels shall not be modified. 28 .TP 29 .B -l 30 The width and height of the matrix shall be 4 31 instead of 5 (reduced by 1) making the transformation 32 linear instead of affine. 33 .TP 34 .B -p 35 Each frame in 36 .I matrix-stream 37 shall contain one matrix per pixel in a frame in 38 stdin. The video in 39 .I matrix-stream 40 shall be 5, 4, or 3, depending on whether 41 .B -a 42 and 43 .B -l 44 are specified, times are wide and tall as the 45 video in stdin. 46 .SH NOTES 47 If both 48 .B -a 49 and 50 .B -l 51 are specified, the matrices shall have the 52 width and height 3 instead of 5. 53 .SH REQUIREMENTS 54 .B blind-affine-colour 55 requires enough free memory to load 5, 4, or 3, 56 depending on whether 57 .B -a 58 and 59 .B -l 60 are specified, full rows from 61 .I matrix-stream 62 into memory. A frame requires 32 bytes per pixel 63 it contains. 64 .SH SEE ALSO 65 .BR blind (7), 66 .BR blind-arithm (1), 67 .BR blind-invert-matrix (1), 68 .BR blind-multiply-matrice (1) 69 .SH AUTHORS 70 Mattias AndrĂ©e 71 .RI < maandree@kth.se >