Monday, August 22, 2011

Singing sad songs in Motown

Here's an article from Government Video:

"The timing could not be worse, digital video surveillance cameras and recorders are popping up everywhere, providing police with an unprecedented volume of video evidence.

But at the same time, falling tax revenues have clamped police departments in a budget crunch vise. As a result, many departments cannot afford professional-quality video forensics technology to properly handle that evidence, not to mention pay to train officers on how to use it.

Instead, money-poor police departments are trying to manage digital video evidence using available computer technology, free programs downloaded from the Internet, and whoever can be spared to run the system.

Unfortunately, the nature of digital video creates lots of opportunities for untrained analysts to make mistakes, says Grant Fredericks, a police video expert and analyst with Forensic Video Solutions in Spokane, Wash.

“All digital video is compressed to some degree,” said Fredericks, who added, that means that each frame viewed is actually a montage of digital video taken at different times and is not a single integrated image captured using uncompressed analog video. “I’ve seen a digital video of a suspect in the distance, where the legs were actually from a frame shot four seconds earlier,” he said. “The video did not accurately show what took place, but it certainly looked like it did.”

Nonetheless, trained police professionals can perform digital video forensics on a shoestring budget, but to succeed police departments must have personnel who know what they are doing, and have decent, if inexpensive, tools to work with.

Click here to read the whole article.


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