Title :
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
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;
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
DOI :
10.1109/ISCIT.2009.5341263
