A Study on a Filter Bank Structure With Rational Scaling Factors and Its Applications
Fumio Itami · InTech eBooks · 2013
For example, image recognition accuracy is improved with sub-band processing. A water‐ mark is typically embedded into a middle frequency band in order to make the scheme not only robust to compression but also secure against attacks on the watermark. Thus, it is highly desirable that analysis filters have excellent frequency characteristics to appropriately decompose signals in such applications.