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220 10 Edge-Based Inpainting
Further improvements of the current scheme are still promising. First, the assistant
information as well as the selected exemplars can be described and compressed into
bitstream in a more compact fashion. Second, extraction of the distinctive features
can be more flexible and adaptable. In addition to edge information, there are other
candidates, such as sketch [196] and epitome [220, 221], which could be derived
from source images to assist the vision technologies and the compression methods
as well. Furthermore, image inpainting is still a challenging problem when some
kinds of assistant information are provided, into which we need to put more effort in
the future.