Error-free computation of Daubechies wavelets for image compression applications
Khan A. Wahid, Vassil S. Dimitrov, GRAHAM A. JULLIEN, Wael Maged Badawy · Electronics Letters · 2003
A novel encoding scheme for Daubechies wavelets is proposed. The technique eliminates the requirements to approximate the transformation matrix elements; rather, by using algebraic integers, it is possible to obtain exact representations for them. As a result, error-free calculations up to the final reconstruction step can be achieved, which provides considerable improvement in image reconstruction accuracy.