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Note: This system did not become a product and therefore is not offered for sale--Sorry.-

System Setup

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Introduction 
Range or target shooting usually requires the shooter or a patient "spotter" to score each round; each shot groups. Often the shooter must stop and look through a spotting scope to see his last shot or shots; then reposition himself and fire again, and so on...

We have developed an inexpensive, accurate, and reliable method of instantaneously determining a shooter's score.

The shooter takes aim, and fires. Close to the target, a shielded (bullet resistant), low cost CCD TV camera that is monitoring the target at 60 images per second, transmits (via a low-power RF link) these images to a small notebook or laptop personal computer located at the shooter's position. When the PC's microphone "hears" the shot: a Delay is started (delay < TOF, Time-of-Flight*), at the end of that delay the last image from the camera freezes; then a much shorter second delay times out, and a second image is captured (total delay > TOF*). 

The PC then subtracts the two images--the first image before the bullet hits, and the image immediately after the bullet hits, interpreting the resultant video data. This interpretation takes the form of looking for the largest change, or difference between the two images: yielding the latest round's entry point.

After the round hits the target, the detection & scoring process takes about 300 milliseconds, and the information is instantly conveyed to the shooter via the system's graphics display; also--at the shooter's option--the PC's sound output "tells" the shooter the score via wireless earphones inside his hearing protectors. These earphones being wireless can be part of one's clam-shell hearing protectors, or earplugs. The voice is real recorded/sampled speech (the shooter's or whomever) using whatever terminology the shooter desires, e.g., "Ring Six, Seven O'Clock," or "Ring Six, Outer Edge, Seven O'Clock."

The graphical presentation (GUI) can be the PC's small Color LCD screen (and/or TV/VCR), showing the target and indicating the latest hit by a colored blinking red dot. The earlier hits can also be displayed and would be color coded relative to their arrival order, e.g.,* * * * * * *.

* Note: Adjustment for Time-of-Flight will vary with type of Rounds & Distances.
 
 


Features:
Indoor & Outdoor operation. 

User selectable System Output: 
       LCD Display Small Colo
         Aural Score Announcment is "spoken" into the shooter's Wireless Hearing Protectors.
         Heads-Up-Display (HUD) on a scoped rifle

The system Recalibrates 60 times per second, on the real target's rings. 

Super Accurate: It NEVER misses. (See Fluke

Score is presented in less than 300 milliseconds after round "Hits" Target.

The time interval between the "Before" and "After" images ~ 15-30 milliseconds

Scores Individual Rounds & Groups.

Scoring is Continuous; and Immediate Totals at the end of a session or tournament. 

System Recognizes allStandard & Custom Targets

Paper Targets need replacing Less Often. 

Impervious to Wind  & Lighting conditions 

The Computer Records all Shooting rounds, allowing video  RePlay

Built-in Chronograph 
 

It gives the shooter an aural score: "Ring Six, Seven O'Clock," as well as, a visual score--in under 3 tenths of a second (0.3sec). It never misses, and it is super accurate--it continually acquires the real target's rings and constantly updates the system calibration--on the fly. 

It works as follows:
1) A video camera/camera capture card is continuously acquiring images (~ 60/sec). 
2) The gun is fired. 
3) The sound is detected by a microphone near the shooter. 
4) A delay is started, (delay < TOF*). 
5) After this delay the most recent image is frozen. 
6) Then after a second--shorter--delay (delay > TOF*), a second image is captured. 
5) The two images are then compared for differences exceeding some threshold. 
6) The scoring info is immediately displayed graphically (within 0.3 sec). 
7) Concurrent with the display, the score is "spoken" to the shooter: "Ring Six, Seven O'Clock"

* Note: Adjustment for Time-of-Flight will vary with Rounds & Distances.

Who will Benefit from the Automated Target Scoring & Reporting System
Gun clubs; Commercial in-door ranges, Private security guard companies; Police departments, Police academies, Highway patrol, Sheriffs departments, Swat teams; the U.S. Military, National guard units, Military reserve units, R.O.T.C., Special forces; Third-world countries.
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Platforms:  IBM Compatible PC (WinTel)

Versions:  MS-DOS, MS-DOS 32, Windows 3.1, Windows95, Windows98, and Windows NT 

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Adaptations:

  Networked shooting stations:
Will enable better supervision and evaluation of shooters, as well as, facilitate competitive shooting.

Networked ranges
Use of the Internet or Intranets for simultaneous competition between disparate shooting ranges and organizations. 

Replays
Each session is recorded as /~.avi movies for replay and evaluation.

"Hogan's Alley," type combat shooting coverage
Scoring and recording an individual's progress through a combat course.  Use of multimedia to record multiple views (pictures in a picture) while "keeping score." Among the attributes scored, one is reaction time after presentation of one of the Hogan's Alley characters.

Shooting Style:
Use of Multimedia to record an individual's stance, positioning, coordination and reflexes while shooting; it's akin to  making a movie of a golfer's swing.

Scoped Rifle w/HUD:
Another adaptation could be the installation of a special form of a Heads-Up-Display (HUD) on a Scoped Rifle. 
This could be in the form of a Binocular style eyepiece arrangement where, in addition to the scope, there is a Video Viewfinder Display. To avoid confusion, the shooter would press a button located conveniently on the rifle to view the presentation in the left eye.

A kind of Chronograph:
Can be created by the use of two microphones: one located at the shooter's position and the second located near the target--the "bang mic" & the "thud mic." By timing the delay between the mics (and compensating for the distance of the "thud mic" from the target), a very accurate measure of each round's Time of Flight can be made.
 

 * * * * * *

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            2 Rounds, 1 Hole    (Read below)
One day during testing, we were trying to force an error. 
The target, already having about a dozen holes in it, was tilted at about 15 to 20 degrees such that the sun angle caused a varying gradient shadow on its face.

One shot was fired and the system scored it as a "hit." We looked at the target video (real captured image) and didn't see a new hole. Then we examined the actual target looking for an elongated or larger hole: there was none. Then we noticed the back of the target, which was made of corrugated cardboard, and there it was: one hole where the shredded edges of the cardboard had a different angle from all the rest.

The entrance hole was indistinguishable from the rest, but the exit hole was unmistakable: two rounds through one hole. Even more remarkable was that we were using a rimfire .22 cal rifle, firing longrifle ammo.


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Shooting Range Ballistics

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Velocity verses Range

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Scoped Rifle with "HUD"
Video Viewfinder Display as "Heads-Up-Display"
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TIMING

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Real Target Video

    Project Designer, Rob Burgun 
    Web Author, Glen Williamson 
Note: This system did not become a product and therefore is not offered for sale--Sorry.


 
 

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