A method for digital image compression of a raster image is disclosed which uses different compression methods for selected parts of the image and which dynamically adjusts compression and segmentation parameters to control tradeoff of image quality and compression. The image is encoded into a single...http://www.google.de/patents/US6804401?utm_source=gb-gplus-sharePatent US6804401 - Method for compressing digital documents with control of image quality subject to multiple compression rate constraints
