Title :
Image Interpolation Exploiting Phase Diversity
Author :
Lettsome, Clyde A. ; Smith, Mark J T
Author_Institution :
Sch. of Electr. & Comput. Eng., Georgia Inst. of Technol., Atlanta, GA
Abstract :
In this paper we present an analysis-synthesis system with adaptive synthesis filters. The general formulation can be employed for image compression applications, but can also be used for image size enlargement. The synthesis section is constructed to contain a multiplicity of outputs with different phase characteristics. By exploiting phase diversity in synthesis, improvement in both PSNR and subjective interpolation quality are possible relative to conventional bilinear and bicubic interpolation methods.
Keywords :
adaptive filters; data compression; image coding; interpolation; adaptive synthesis filters; analysis-synthesis system; bicubic interpolation methods; bilinear interpolation methods; image interpolation; image size enlargement; phase diversity; Adaptive filters; Adaptive systems; Filter bank; Finite impulse response filter; Frequency; Image analysis; Image reconstruction; Interpolation; Nonlinear filters; Speech synthesis;
Conference_Titel :
Digital Signal Processing Workshop and 5th IEEE Signal Processing Education Workshop, 2009. DSP/SPE 2009. IEEE 13th
Conference_Location :
Marco Island, FL
Print_ISBN :
978-1-4244-3677-4
Electronic_ISBN :
978-1-4244-3677-4
DOI :
10.1109/DSP.2009.4785902
