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> why camera maker do not use it already. What the problem ? Or it's just a question of time ?

Well, I guess it's like always: the price. While jpeg coders get produced thousands a day a jpeg2000 chip is really rare. My example just shows that it is technically possible to create a system on a chip for it, not that it's done regularily for customer electronics. That's why they are still way too expensive to be used in cameras. As long as they can still fool their customers with megapixels there won't be no change. Perhaps if prices stabilize and people learn that other characteristics are more important. But guessing from the bad quality the resampling in compact cameras has ("digital zoom") or how bad the color balancing sometimes is, I doubt it at the moment. Also why don't cameras offer other filetypes? They don't seem to care.

I think another problem with Jasper is the lacking Documentation (on markers or coding options for example).