Natural images and also aerial photos have completely different characteristics compared to computer generated images. They usually use much more colors and large areas of exactly the same color are unnatural.
In case of artificial (computer) generated images you should use PNG instead.
Sometimes people don't know which file format they should use. That's why we will announce soon a new library, called libPPP. libPPP uses compression techniques of PNG and PGF and predicts the better format (higher compression ratio) in almost no time.
Chris
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Why this two types only?!
Natural images and also aerial photos have completely different characteristics compared to computer generated images. They usually use much more colors and large areas of exactly the same color are unnatural.
In case of artificial (computer) generated images you should use PNG instead.
Sometimes people don't know which file format they should use. That's why we will announce soon a new library, called libPPP. libPPP uses compression techniques of PNG and PGF and predicts the better format (higher compression ratio) in almost no time.
Chris