Today, the extra information that links the separate JPEG images into a sequence so they can be shown in order must be stored separately from the JPEG files themselves. Part two of the JPEG2000 standard will contain built-in locations for storing the auxiliary information. That data will determine the order and speed at which separate JPEG2000 frames are to be displayed to create motion. We might end up just using QuickTime as a standard wrapper for motion JPEG2000, but these decisions will evolve to a conclusion during the committee meetings in 2000. JPEG2000 promises to compress images 200 times with better resulting quality than current JPEG images compressed fivefold.
Wavelets use complex base functions, with some coarse features akin to sine waves.
However, the mother wave would have to be sent along with the image data, thereby increasing the size of the compressed file. Instead, JPEG2000 picks a universal mother wave ahead of time, so that the receiver of a compressed file can assume which mother wave is being used, eliminating the need to send it along with the file. JPEG2000 also strives to overcome the worst effects of current JPEG compression, which processes images in 8 x 8-pixel blocks, leaving coarsely spaced artifacts that spoil fine details. LuraTech has patented a technique used by spy satellite cameras, which scan the surface below in the same way an audio disk spirals its single track onto the entire disk. Each image is taken in a single spiral scan that is 1 pixel high-starting in the upper left quadrant and proceeding to the lower right.