1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
|
.TH QCAM 1 "Qcam 0.8"
.SH NAME
qcam, xqcam \- get pictures from B&W Connectix QuickCam(tm)
.SH SYNOPSIS
.HP
.B sqcam
[
.BI \-B bpp
] [
.BI \-b brightness
] [
.BI \-c contrast
] [
.BI \-s scale
] [
.BI \-h
]
.SH DESCRIPTION
.B sqcam
is a program that displays the output of a QuickCam on a
system using svgalib.
.SS OPTIONS
.PP
.TP
.BI \-s scale
.I scale
can be 1, 2, or 4. It specifies what fraction of the QuickCam data
should be discarded.
.I scale
of 1 indicates that all the data should be sent.
.I scale
of 2 indicates that half of the pixels on each line and half of the
lines should be discarded, resulting in 1/4 as much data being
transferred.
.I scale
of 4 likewise means a fourfold shrinking in each direction.
.TP
.BI \-B bpp
Bits per pixel. Valid values are 4 (giving sixteen shades of
gray) and 6 (giving 64 shades of gray).
.TP
.BI \-b brightness
Exposure time. Useful values are 1-254, with low numbers indicating
short exposures (for use in bright light) and high numbers indicating
long exposures (dim light).
.I brightness
of 255 puts the Cam in "bulb mode", which is not useful with
.B qcam
and
.BR xqcam .
.TP
.BI \-c contrast
.I contrast
is normally set at 104. Low numbers indicate low contrast. Valid
values are 0-255.
.TP
.B -h
Print usage information.
.SH FILES
/etc/qcam.conf Configuration file
.SH SEE ALSO
The QuickCam Third Party Developers web page at
.BR http://www.crynwr.com/qcpc .
.SH BUGS
Autodetection is very brittle.
.PP
The new Color QuickCam is not handled with this software, although
there are Color Cam drivers available from the web site.
.PP
The wide-angle lens of the QuickCam gives an ugly barrel distortion.
Michael Herf has written
.BR warp (1)
to fix this, but since
.BR warp (1)
doesn't know what part of the CCD is in the image, it only works on
images whose center is the center of the CCD.
.SH AUTHORS
Scott Laird (original code), Brian Scearce (bidirectional
and dark current modifications),
.B xqcam
window scaling, edge detection), Ed Orcutt (autoexposure modifications),
Dave Plonka (locking code).
|
