Digital Image Compression
Images are perhaps the most influential of media that we encounter on a daily basis. This chapter will apply 2-D statistical signal processing to their compression for both efficient transmission and storage. We consider a generic model consisting of first transformation, then quantization, and then entropy coding. We cover the popular DCT-based image coding as well as SWT-based scalable image coders such as JPEG 2000. Finally, we present some current ideas for improving image compression.
9.1 Introduction
With reference to Figure 9.1–1, we see a universal diagram for the transmission or storage of digital images. On the extreme left, we have the input image file. We consider the case where the input image ...
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