1FVVIEWER(1)                      Fawkes Manual                     FVVIEWER(1)
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NAME

6       fvviewer - View FireVision images from various sources
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SYNOPSIS

9       fvviewer [options] -s shmem_id
10       fvviewer [options] -n host[:port]/image_id
11       fvviewer [options] -f file
12       fvviewer [options] camera argument string
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DESCRIPTION

15       Retrieve images via FireVision and display them in a X11 window.
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17       In the first form the image is read from a shared memory image segment
18       with the given shmem_id on the local host. The second form retrieves
19       the image via the network and FireVision Fountain connecting to the
20       given host (and optionally port) and reading the image for image_id.
21       The third format allows for reading an image from the given file.
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23       The last form is the most flexible as it allows you to pass in an
24       arbitrary camera argument string to open any camera supported by
25       FireVision.
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27       All forms share common options described below. Additionally there are
28       keys that can be pressed in the window to influence the behavior. By
29       default the viewer will start with continuous mode disabled, that means
30       that the user needs to press the space button to retrieve the next
31       image.
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OPTIONS

34       -h
35           Show usage instructions.
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37       -c
38           Start in continuous mode.
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40       -s shmem_id
41           Open image from local shared memory segment with ID shmem_id.
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43       -n host[:port]]/image_id
44           Open image via the network. The argument defines the host and
45           optionally port to connect to, and the image_id to retrieve.
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47       -j
48           Retrieve images JPEG compressed (network retrieval only). This
49           conserves bandwidth but also lowers the image quality.
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51       -d delay
52           Delay in ms to wait before a new image is captured after the
53           previous one has been received. This is especially useful for
54           continuous local shared memory display.
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56       -f file
57           Read image from 'file.
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59       -o shmem_id
60           Write the incoming image into a local shared memory segment with
61           the given ID. This can be used for quickly relaying images for
62           debugging.
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64       -v
65           Verbose console output.
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KEYS

68       c
69           Toggle continuous mode.
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71       r
72           Rectify image. Asks for a rectification info file and will show the
73           rectified image. The rectification is performed locally.
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75       +/-
76           Increase or decrease the delay by 5 ms respectively.
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78       Shift-R
79           Rectify image, but use the already loaded rectification file and do
80           not query again. Only useful after r has already been used, for
81           example to quickly toggle between the rectified and non-rectified
82           versions.
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84       Space
85           Refresh the image (in non-continuous mode).
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87       q/Esc
88           Quit the viewer.
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EXAMPLES

91       fvviewer -n myrobot/my_image
92           Read the image with the the ID my_image via the network from the
93           host myrobot.
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SEE ALSO

96       fawkes(8), fvnet(1), fvshmem(1)
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AUTHOR

99       Written by Tim Niemueller <niemueller@kbsg.rwth-aachen.de>
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DOCUMENTATION

102       Documentation by Tim Niemueller <niemueller@kbsg.rwth-aachen.de>
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FAWKES

105       Part of the Fawkes Robot Software Framework. Project website is at
106       http://www.fawkesrobotics.org
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110Fawkes 1.3.0                      06/21/2022                       FVVIEWER(1)
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