Title :
Spatially-varying super-resolution for HDTV
Author :
Chih-Tsung Shen ; Hung-Hsun Liu ; Ming-Sui Lee ; Yi-Ping Hung ; Soo-Chang Pei
Author_Institution :
Grad. Inst. of Networking & Multimedia, Nat. Taiwan Univ., Taipei, Taiwan
Abstract :
We propose a system to up-sample visual signals for high definition televisions (HDTVs). Although the original visual signals are degraded and limited, we still try to solve these problems by using super-resolution. First, we interpolate the visual signals with a edge taper to the desired size. Then, we combine L1 data term, L2 data term, Tikhonov-like regularizer and total variation regularizer with a saliency weighting for our L12TTV deblurring method. Adopting our L12TTV deblurring, we can remove the spatially-varying blurry conditions of the interpolated signals. Experimental results show that our system outperforms than comparisons in both image and video cases.
Keywords :
high definition television; video signal processing; HDTV; L1 data term; L12TTV deblurring method; L2 data term; Tikhonov-like regularizer; high definition television; interpolated signal; spatially-varying blurry condition; spatially-varying super-resolution; total variation regularizer; visual signal; Interpolation; Minimization; Noise; Signal resolution; Spatial resolution; Visualization;
Conference_Titel :
Circuits and Systems (ISCAS), 2013 IEEE International Symposium on
Conference_Location :
Beijing
Print_ISBN :
978-1-4673-5760-9
DOI :
10.1109/ISCAS.2013.6572066