Introduction - If you have any usage issues, please Google them yourself
As an example to demonstrate its potential, we apply the
HSF as a post-processing step for reducing the artifacts in
JPEG-encoded document images. A document image typically
consists of text, graphics, and natural images in a complex layout.
Each type of content is distorted differently by the JPEG
artifacts due to its unique characteristics. In this application,
we use four image filters in the HSF. The image filters are
selected