CCTV Camera Grid Solves Mystery
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Free PDF Download How to Combat Six Internet Video Challenges - By Edward Primeau |
I recently had a forensic video case that involved dozens of CCTV cameras. The immediate challenge was to identify the cameras’ placement and the number given to each camera because there were dozens of hours of footage to review to determine the series of events leading up to the details that needed to be investigated.
There was one camera in particular that was important to me in viewing a series of events. The other problem I had was that the CCTV system that was originally installed had been expanded and another system was added to cover some additional surveillance area. Whoever installed the additional CCTV cameras did not number the new cameras continuously. Instead, they began with camera one, which created redundancies because the camera I was most interested in was camera number twelve. I had two camera twelve’s to examine.
Whenever I am asked to review some CCTV system footage to help identify the activity and people in the footage, I begin by creating a camera grid. A CCTV camera grid is a layout of all closed circuit cameras with their location and proximity to the activity and people in the recording.
There are several types of CCTV cameras, one of which is a point tilt zoom camera. These PTZ cameras are made to follow the action as directed by their security (or loss prevention) operators.
In one case I was asked to review several cameras from a department store that covered a shop lifter. Several of the cameras were a type of extremely high quality PTZ camera and actually followed the suspect around the store. Since the CCTV system was digital, the footage looked amazing and needed very little clarification.
Although the footage was great, we did need a camera grid. Working for the defense in this case, we had a series of events to determine that would help negotiate a plea. I set off to draw the store layout on a piece of paper and to number the cameras as I went along the layout. We were able to determine which cameras were in what area of the store so when the suspect passed through those areas a second time, we knew to look at the previous cameras for any other activity that could be seen outside of the main coverage area.
Then two great breaks came when we found camera shots in unlikely places. The camera shots showed us a series of events as they actually occurred on other cameras in addition to the coverage of the main camera in that specific coverage area.
As you can see from my experience, by starting your video forensic examination with a camera grid, you can discover a lot more about your CCTV video footage than by simply relying on the obvious cameras for each series of events.
Lastly, keep in mind that nearby businesses like convenience stores and gas stations have exterior CCTV systems that may have video recordings that can help your case. A video forensic expert can enlarge and clarify distant footage that might help add evidence to support your case. Remember, it’s about the preponderance of the evidence. In any case, all we have to do is tip the scale slightly to address and establish a reasonable doubt.
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Referred by: http://www.rgrondeauenterprises.com
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Free PDF Download How to Combat Six Internet Video Challenges - By Edward Primeau |
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About the Author: Edward Primeau RSS for Edward's articles - Visit Edward's website (800) 647-4281 Ed Primeau began his career in multimedia in 1979. As an engineer in the music industry, Ed has worked with renowned recording artists like Anita Baker, Bob Seger and Barry Manilow. In the early 1980s, Mr. Primeau developed a music industry marketing niche, hosting album release parties for major label record companies. In 1984, Ed founded www.PrimeauProductions.com a full-service video production and Internet marketing company specializing in creative video and social media marketing campaigns. Ed volunteers for charities and organizations throughout the world including the national Speakers Association Foundation http://www.nsafoundation.org/ . Ed is also a presenter to Notre Dame University. In addition, Ed is also a respected audio visual forensics expert engaged in many law cases throughout the United States and Canada. Ed is the author of “The Art of Production †a book about multimedia production including techniques, pre to post production time and money saving ideas and techniques as well as packaging and marketing multimedia products. Ed is also a contributing author for "Advance Selling for Dummies". He has been published in many newspapers and magazines including the Wall Street Journal http://blogs.wsj.com/speakeasy/2009/08/11/pynchon-revealed/. Primeau Productions, LLC is working with The Napoleon Hill Foundation restoring films of Dr. Hill for future release. Primeau Productions, Inc is actively involved with production, publishing and promotion. Digital Internet campaigns for clients throughout the world. www.PrimeauProductions.com and blog www.VideoProductionPrimeau.com
Click here to visit Edward's website. Microphones Problems and Solutions Video SEOSearch Engine Optimization Using Video The Master Keys to Success Napoleon Hill Closed Circuit TV Problems and Solutions Eleven Tips for a Successful Internet Marketing Video Campaign By Ed Primeau |
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