Title :
Multi-frame super resolution using edge directed interpolation and complex wavelet transform
Author :
Izadpanahi, S. ; Demirel, H.
Author_Institution :
Dept. of Electr. & Electron. Eng., Eastern Mediterranean Univ., Gazimagusa, Turkey
Abstract :
In this paper, a multi frame super resolution technique is proposed which uses edge directional interpolation (EDI) and dual-tree complex wavelet transform (DT-CWT). In the proposed technique a super resolution process is applied for each frame to generate the low frequency component. On the other hand, high frequency components are generated by DTCWT decomposition followed by EDI. Finally, the composition of the generated subbands using inverse DTCWT (IDT-CWT) reconstructs the super resolved output frame. Experimental results on a number of benchmark video sequences with respect to their PSNR measures confirm the superiority of the suggested method over the state of the art video resolution enhancement methods.
Keywords :
edge detection; image enhancement; image reconstruction; image resolution; image sequences; interpolation; trees (mathematics); video signal processing; wavelet transforms; DT-CWT decomposition; IDT-CWT; PSNR measures; dual-tree complex wavelet transform; edge directed interpolation; high frequency component generation; inverse DT-CWT; low frequency component generation; multiframe super resolution technique; super resolved output frame reconstruction; video resolution enhancement methods; video sequences; DT-CWT; interpolation; super resolution;
Conference_Titel :
Image Processing (IPR 2012), IET Conference on
Conference_Location :
London
Electronic_ISBN :
978-1-84919-632-1
DOI :
10.1049/cp.2012.0447
