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Png Versus Jpeg Image Quality, When generated from a JPEG orginal
Tman
post May 14 2005, 06:33 PM
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QUOTE (NIX @ May 14 2005, 12:01 AM)
Here's an L257 view of Jibsheet. AwalkonMars Still working on the MI mosaic though... blink.gif
Nirgal, the difference in resolution is indeed an issue but overlapping the images can be a real pain..
Nico
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Hi Nico, I just enjoyed your full resolution PNG of east Methuselah (or Jibsheet cool.gif ). Exquisite such full resolution!
In respect of the size of 25MB I wonder about you generated a PNG-file of it. The orginal pics were sure JPEG - they must be JPEG smile.gif Are you sure there would be a visible difference in comparison to a high JPEG version?

Note: For the responses in this issue it was opened a new thread in "Imagery & Tech Issues": http://www.unmannedspaceflight.com/index.php?showtopic=1001

This post has been edited by Tman: May 16 2005, 07:55 PM


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Nix
post May 14 2005, 11:33 PM
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I think .png is better. Have not tested that extensively though. Anyone? Originals of course .jpg. I'm just used to convert fullres and 50% to .png and thumbnails to .jpg
There's some awesome stereo's in that pan too btw biggrin.gif
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djellison
post May 15 2005, 07:03 AM
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You could take that 20Mb down to 5 or less with no obvious loss of quality with a JPG

Doug
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