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Kind of odd IR image effect
In article
, RichA writes Notice the image in this Time Magazine spread. A heat-sensitive IR image. Now, below (bottom link) the image inverted. IMO, it looks less like a photographic negative inverted than uninverted. It almost looks like they printed it that way for effect. http://www.time.com/time/photogaller...191489,00.html http://www.pbase.com/image/128971231 Common practice. Almost all thermal imaging cameras have a black/white hot option. If you are using thermal imaging for search and rescue then it is a lot easier to find the warm body if you are using white-hot, so the cold background is black rather than glaring white. On the other hand, if you are using thermal imaging for seat of the pants fast jet night flying then you often set black hot, because the cold sky is brighter, as it would in daylight, and you are less likely to be disoriented. Formal test procedures for measuring the sensitivity of thermal images permit the user to toggle between black and white hot during the test to establish optimum performance. -- Kennedy Yes, Socrates himself is particularly missed; A lovely little thinker, but a bugger when he's ****ed. Python Philosophers (replace 'nospam' with 'kennedym' when replying) |
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