Advances in Visual Data Compression and Communication

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10.3 Edge Extraction and Exemplar Selection 205

(a) (b)

Figure 10.5 An example of necessary exemplar selection in which curves denote edges and black

blocks denote skipped regions. (a) Textural exemplar selection in which white blocks are necessary

textural exemplars; (b) structural exemplar selection in which white blocks are necessary structural

exemplars, four types of edges are also distinguished in (b). Also see Figure 10.4 for a practical

example.

by inner samples. In addition, propagation of these blocks, from outer to inner, can

reconstruct the related textural regions.

To further improve visual quality of reconstructed images, additional ...