"We have done a lot in the way of putting bad guys in jail," said investigator Aldon Helmert, as he showed off some high tech software.
The Biloxi Police investigator uses special video software in his police work. A program called "detective" can enhance or clarify images. He's able to find details in the video image of a vehicle with its headlights pointed toward the camera.
"Gives us the ability to take that image and put a little bit more light in it," he explains, "This is the original, raw footage on the right."
In one case, the software helped investigators focus on a simple detail that led to an arrest: A car air freshener.
"And based on that air freshener, it narrowed down the vehicles we were focused on. So, essentially we found the vehicle based on that air freshener," he said.
Images of the Wal Mart attacker were captured by the store surveillance video. But the image was rather grainy, until Biloxi Police used the special equipment to enhance and clarify.
That clearer picture quickly led to the arrest of Jess Green.
"The video they had, we were able to work with and give them back something they could use," said investigator Darrin Peterson.
Law enforcement's use of video today extends far beyond store surveillance tapes or home video cameras. These days most police cars come equipped with portable video cameras to record traffic stops or crime scenes.
"We see that now a lot of private people have access to video recordings. A lot of commercial businesses are able to afford to put video systems in. So now when crimes occur in those places, it's a good chance we're able to capture some type of video," said Peterson.
The enhanced video of the suspect in the Wal Mart attacks is being held as evidence in the case against him.
Green is charged with two counts of armed robbery and one sexual assault.