- Call to Loan or Buy Security/Motion demonstration board.
1. You provide the Black & White or Color Video Camera Input.
2. Connect the output to any video monitor and let VPI do the rest !!
3. You control Threshold, Tolerance and Mode of Operation (Edge or Change).
- Please, feel free to download, view and print this Operators Manual of our Security Demonstration board.
Click for Operators Manual of Demonstration Board.
INTRODUCTION.
- The Image PreProcessor(IPP), operating in the intrusion mode, can make a determination of degree of intrusion without the assistance of other processing devices. It can alert personnel observing a video monitor of probable hostile intrusion. Under some operating scenarios, it may be desirable to provide additional tracking data of intrusions to determine if the intrusion is to be considered an actual threat. These digital data may be multiplexed into the video data from the intrusion detecting video camera to substantially reduce the task of follow on processing. An additional advantage of the approach is that the viewed video data would have objects in motion highlighted for easy detection.
PURPOSE OF THE SECURITY DEMO BOARD
- The Security Demo Board provides a means of visualizing the performance of
the IPP3000 in an operating system. It displays a super-imposed halo
around objects in motion (tracking data). The halo(s) and an alarm display
provide an immediate evaluation of the tracking data quality. The board
also demonstates the ease in which the tracking data could be transmitted
on the common video line; it can easily be stripped off on the receiving
end. An eight channel version, using only one IPP3000 and A/D Converter,
could be transmitted on a single coaxial line. This could not easily be
visually demonstrated; thus, the single channel version is provided for
the demonstration.
STRUCTURE OF THE SECURITY DEMO BOARD
- The board contains a Video A/D Converter (TMC22071), a Programmable Logic
Device (PLD - EPM7064SLC44), an IPP3000 (PLD and IPP3000R), two RAM to
support the IPP3000, a Video Multiplexer, and two timers.
1) The A/D Converter provides 6-bit digital video data to the IPP3000
and produces sync signals for timing controls.
2) The PLD converts the sync signals from the A/D to blanking signals
used by the IPP3000. It also generates a serial bit stream at power-
up to configure the A/D.
3) The IPP3000 produces the tracking data and controls the display of
these data as well as an alarm indication (when applicable).
4) The RAM chips store digitized video data and store a reference image
format which can be used to detect motion.
5) The Video Multiplexer operates under control of the IPP3000 to super-
impose digital tracking data onto the analog video signal.
6) The timers provide power-up timing and timing of refresh of the
reference image. This is provided every 12 seconds.
OVERVIEW OF THE SELECTIONS AVAILABLE
- The Security Demo Board provides for selection of the operating Mode, of
the Threshold, and of the Tolerance.
1) MODE - The mode selection is between the ANY CHANGE operation and the
NEW EDGE operation. A slide switch provides this selection.
a) ANY CHANGE - All cells from the reference image are compared
each frame to the real time image. Any change is counted and
also displayed as tracking data.
b) NEW EDGE - Only new conditions of edges of cells not containing
edges in the reference image are counted and displayed as track-
ing data. This occurs each frame.
2) THRESHOLD - The Threshold is the sensitivity to shades-of-gray con-
trast used while processing the image. The 3-bit DIP switch provides
eight selections as defined in Table I. This usually affects the
number of tracking data displayed; therefore it should be considered
when selecting Tolerance.
3) TOLERANCE - The Tolerance is the number of tracking cell indications
permitted before the alarm condition is displayed. The 4-bit DIP
switch provides 16 selections as defined in Table II. This switch
does not affect the tracking data display. It determines the alarm
detection sensitivity by size of the intrusion.
DESCRIPTION OF THE DISPLAYED RESULTS
- ALARM DISPLAY AREA - The top of the display area of the monitor/TV
contains a dark zone divided by a sharp horizontal line from what is
displayed below. If there is an alarm condition, there will be from
one to four wide horizontal white lines displayed in this dark zone.
This provides a very obvious alarm condition display.
- IMAGE DISPLAY AREA - All of the remaining display area (less the alarm
display area) is used for both the un-modified video image and the
tracking data displayed every eighth horizontal scan line instead of
the video. This provides a "Venition Blind" effect with spaced dark
horizontal lines displayed over the video image. When tracking data
appears, short horizontal white lines will appear on the black lines.
This will provide a halo effect around objects in motion. The tracking
data will be displaced below and to the right of an object in motion.
EXTERNAL CONNECTIONS TO THE BOARD
1) A power plug on the board provides for connection from a wall mounted
power supply with power cord. This power supply is provided.
2) A BNC connector on the board provides for connection to a video camera
(not supplied). An adapter is provided to the BNC connector to adapt
to an RCA connector. The video camera must conform to RS170; it may be
either monochrome or color.
3) A BNC connector on the board provides for connection to an output
monitor or TV. An adapter is provided to the BNC connector to adapt
to an RCA connector. The monitor must be compatible with the video
camera.
OPERATING PROCEDURES
1) With the power supply removed from the power source and the video
camera and the monitor/TV in the OFF mode, connected the video camera
and the monitor/TV to the board. Connect the power supply, the video
camera power cord, and the monitor/TV power cord to a common switched
(OFF initially) source of 115 VAC power. (Note: The monitor/TV may
be powered in advance of applying other power)
2) Set the Mode, Threshold, and Tolerance switches to the initial condi-
tions defined in Figure 1. (these should be pre-set)
3) Switch ON the power. Wait at least 12 seconds for stable black lines
to appear.
4) The display will now function as described. The selection switches
may be changed at any time (with or without power applied).
5) Consider the 12 second up-date interval of the reference image while
viewing the displayed results.
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