Super-Resolution Image with Estimated High Frequency Compensated algorithm

Author

Wang, Jong-Tzy ; Liang, Kai-Wen ; Chang, Shu-Fan ; Chang, Pao-Chi

Author_Institution

Dept. of Electron. Eng., Jinwen Univ. of Sci. & Technol., Shindian, Taiwan

fYear

2009

fDate

28-30 Sept. 2009

Firstpage

175

Lastpage

180

Abstract

In this paper, we propose an estimated high frequency compensated (EHFC) algorithm for super resolution images. It is based on iterative back projection (IBP) method combined with compensated high frequency models according to different applications. The proposed algorithm not only improves the quality of enlarged images produced by zero-order, bilinear, or bicubic interpolation methods, but also accelerates the convergence speed of IBP. In experiments with general tested images, EHFC method can increase the speed by 1 ~ 6.5 times and gets 0.4 ~ 0.7 dB PSNR gain. In text image tests, EHFC method can increase 1.5 ~ 6.5 times in speed and 1.2 ~ 8.3 dB improvement in PSNR.

Keywords

image resolution; iterative methods; EHFC method; estimated high frequency compensated algorithm; iterative back projection method; super-resolution image; Acceleration; Convergence; Frequency estimation; Gain; Image resolution; Interpolation; Iterative algorithms; Iterative methods; PSNR; Testing;

fLanguage

English

Publisher

ieee

Conference_Titel

Communications and Information Technology, 2009. ISCIT 2009. 9th International Symposium on

Conference_Location

Icheon

Print_ISBN

978-1-4244-4521-9

Electronic_ISBN

978-1-4244-4522-6

Type

conf

DOI

10.1109/ISCIT.2009.5341263

Filename

5341263