Abstract: A technique for controlling the quality of one or more compressed images. The technique allows, for example, the selection of a target quality metric(s) and the compression of the image(s) such the compressed image(s) meets the metric(s). Alternatively, a target quality metric can be specified, and the image(s) compressed using parameters estimated to achieve the target quality. Optionally, the quality metric can also be made available to, for example, a user on an image processing system. The quality metrics can be, for example, for one or more layers, one or more images and/or one or more image sequences.

Abstract: An iterative technique for performing adapting compression parameters on one or more images is provided, where each image in a sequence of images is compressed using, for example, Part 1 of the JPEG2000 Standard. Subsequent images in the sequence of images are then processed using an adapted value of the parameter(s) determined for a previous image.