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-
- ~4Dgifts/toolbox/src/exampleCode/video/security README
-
- This program is built with a number of optional libraries. If dps_dev is
- installed, then you will want to explicitly "setenv DPS" and/or if
- quicktime_dev is installed, then explicitly "setenv QT" before you run
- "make". By default, the Makefile is set to compile not expecting that
- dps_dev nor quicktime_dev is present on the system. In version 4.1 of the
- D.T., both of these settings were defined at the time security was compiled
- with the Makefile.
-
-
- security(l) UNIX System V security(l)
-
- NAME
- security - security camera for stopframe and motion
- detection
-
- SYNTAX
- security [-n device]
-
- DESCRIPTION
- security is a program that detects motion on a video source
- and outputs it to a movie file. You can select various movie
- formats and 3 different image sizes. The frames are added to
- the movie file as they are collected. This is different than
- capture(1). Hence, the collection frame rate is less than
- capture.
-
- When the Stop button is pressed, the movie is rewritten as
- an optimized movie. This requires copying the movie. If this
- operation fails (from not enough disk space, for example),
- the unoptimized movie is left.
-
- The Preferences panel allows the user to adjust the criteria
- for motion. If a stop-frame camera is desired, deselect 'Use
- Motion Threshold' and set 'Motion Threshold to -1. This will
- grab 'End Threshold' frames every and 'Time Threshold' to 15
- to collect a single frame every 15 seconds.
-
- The misc selection controls settings for various attributes.
-
- Audio
- Collect audio in addition to video.
-
- Monitor
- While collecting video, display the frames only the
- frames that are included in the movie.
-
- Saver
- When motion is detected, reset the screensaver. This
- allows you to walk into you office and have your screen
- unblank.
-
- Timestamp
- Add a date/time stamp to the first frame of every
- motion sequence.
-
- The algorithm for the motion detection is to difference two
- frames. The Luminance of the frames is compared on a per-
- pixel basis against a threshold. Then the sum of all
- motion-detected pixels is compared to the motion threshold.
-
- OPTIONS
- -n device
- This option specifies the device number. A default of 0
-
- Page 1 (printed 4/21/94)
-
- security(l) UNIX System V security(l)
-
- is used if not specified. This option is only needed if
- there are more than one video input device ( i.e. vino
- and Indy Video).
-
- SEE ALSO
- capture(1)
-
- AUTHOR
- Silicon Graphics Inc.
-
- BUGS
- If the program is aborted before the movie is optimized, the
- movie is useless. This should only happen if the program is
- killed. It will properly deal with disk full problems.
- Sometimes the Movie View will crash.
-
- Page 2 (printed 4/21/94)
-