Re: CSI demystified! - CSI

>Is it really possible to enhance the images on surveillance tapes the way
they do on the show?

A: This is possible, yes. Good photo "retouching" software does the same sort
of thing (increase/decrease contrast, increase sharpness) and more
specialized software can even convert small differences in color in the
original image to contrasting colors to provide the
effect of even more enhancement.

真的有可能像劇中那樣處理監視錄影帶嗎？

是的，這是有可能的。好的相片"重建"軟體可以做類似的工作〈增加/減少對比，
增加銳利度〉。更專門的軟體甚至可以微調原始照片的色調來做對比，由此達到
更好的佳化效果。

>How much can you enhance the images?

A: Again, it's not my field, but I suspect it's less than what they show on
CSI. I could be wrong, though - recall that many of the photo enhancement
techniques (software) were originally developed for military applications and
clandestine intelligence ("spy") operations, and those are quite
sophisticated. How much of that technology has filtered down to the law
enforcement/forensics community, I'm not sure. It's probably a safe bet that
the military/intelligence software is better than what's available to
forensic analysts, which is better than what's (usually) available to
joe-on-the-street.

有可能把影像佳化到什麼程度？

這也不是我專精的領域，不過我想大概沒有劇中那麼厲害，不過我可能是錯的。
大部分的影像處理技巧〈軟體〉原本都是為軍事還有間諜活動所設計的，那些軟
體都滿有能耐的。我不確定究竟有多少這種科技被下傳到執法/鑑識的領域裡。
不過應該可以這樣說，軍事/情報軟體會比鑑識好，而鑑識有的東西又比平常人
可以拿到的好。

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