Facts

The core technology is a discrete wavelet transform and a very fast and efficient compression technique. Some parts of the used technology are similar to JPEG 2000, but other parts are simpler and therefore, much faster. Both technologies, JPEG 2000 and PGF, have been developed at the same time at different places.

Due to the hierarchical structure of wavelet transforms PGF is best suited for progressive enhancing image resolution and quality during loading and visualization. This feature of progressive resolution enhancing cannot be achieved by the old JPEG standard. So, it isn't necessary anymore to store extra thumbnail images for quick access, because reading only a few bytes of a PGF image allows visualizing such a thumbnail image very quickly. This is also an advantage for visualizing PGF images on a website.

PGF is completely integer based. This makes a hardware implementation easier. PGF is able to fully support the 12 bit color depth of common CCD chips.

Please have a look to the facts sheet to get more information about PGF.