| Image correction for human perception? [message #50457] |
Sat, 30 September 2006 13:09 |
maye
Messages: 29
Registered: June 2006
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Junior Member |
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Hi!
We have an interesting discussion going on here about the need of
correcting intensities of remote sensing data in red, green and blue
filters for the perception of the human eye to create a 'TRUE' color
image.
Basically, at the moment we tend to believe it's not necessary, because
we have a good linear detection system (a CCD),
so all we need to correct is the filter absorption (plus the usual CCD
tralala of course).
But after we have our calibrated images in the 3 colours and put this
together to a colour image, why would we have to correct for the human
eye spectral sensitivity, if looking at the image at the screen
(provided my display system works ideal) will automatically involve the
eye's sensitivity?
Would the best way to display remote sensing data to the human eye not
be, to try to show the exact same relative intensities like detected at
the place of observation?
What makes us doubt is the amount of publications one can find
mentioning a "correction for human eye perception" and we fear, that
they cannot ALL be wrong! :)
So what do we miss? Is the problem maybe, that we only have data of 3
filters and there's of course more? But the television works like that
and can create quite realistic images, so it shouldn't be the problem?
Thanks for your enlightenment!
Regards,
Michael
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