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751bc02 @riaanvddool Initial commit.
authored Oct 4, 2011
1 .\" Process this file with
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4 .TH MTF_mapper 1 "SEPT 2011" Linux "User Manuals"
5 .SH NAME
6 mtf_generate_test_chart \- generate test charts for evaluating lens sharpness
7 .SH SYNOPSIS
8 .B mtf_generate_test_chart [-o
9 .I <filename>
10 .B ] [-s
11 .I <a4|A4|a3|A3|a2|A2>
12 .B ] [-t
13 .I <perspective|grid>
14 .B ] [-d
15 .I <distance>
16 .B ]
17 .SH DESCRIPTION
18 .B mtf_generate_test_chart
19 generates scalable vector graphics (SVG) files containing test charts for
20 evaluating digital camera lens performance (sharpness) as well as autofocus
21 accuracy / fine-tuning.
22 .B mtf_generate_test_chart
23 should be used to generate suitable test charts of use with the
24 .BR mtf_mapper (1)
25 tool.
26
27 .SH OPTIONS
28 .IP "-o <filename>"
29 Specify output file name
30 .IP "-s <a4|A4|a3|A3|a2|A2>"
31 Specify page size of the chart
32 .IP "-c <perspective|grid>"
33 Specify chart type. The "perspective" chart is for evaluating autofocus
34 behaviour, and is intended to be photographed at an angle, typically 45
35 degrees. The "grid" chart is intended to evaluate lens sharpness across the
36 focal plane, and should be photographed perpendiculary.
37 .IP "-d <distance>"
38 Specify the desired viewing distance from the chart for perspective mode.
39 Distance is in mm, measured from the reference edge on the chart, to the
40 camera focal plane.
41 .IP -h
42 Displays usage information
43 .SH BUGS
44 In theory, the perspective chart can be corrected so that the perspective
45 distortion is cancelled perfectly when the chart is photographed from the
46 correct distance. This ensures that all the rectanles appear as squares in
47 the photograph; however, this is not required for
48 .BR mtf_mapper (1)
49 to work correctly. Currently, the perspective distortion and optimal
50 distance is fixed in the source code.
51 .SH AUTHOR
52 Frans van den Bergh <fvdbergh at gmail dot com>
53 .SH "SEE ALSO"
54 .BR mtf_generate_rectangle (1),
55 .BR mtf_mapper (1),
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