Super-resolution based on region-matching motion estimation

Osama A. Omer; Toshihisa Tanaka

doi:10.1117/12.703476

29 January 2007 Super-resolution based on region-matching motion estimation

Osama A. Omer, Toshihisa Tanaka

Proceedings Volume 6508, Visual Communications and Image Processing 2007; 65081O (2007) https://doi.org/10.1117/12.703476
Event: Electronic Imaging 2007, 2007, San Jose, CA, United States

Abstract

We consider the problem of recovering a high-resolution (HR) frame from a sequence of low-resolution (LR) frames. It is challenging to design a super-resolution (SR) algorithm for arbitrary video sequences. Video frames in general cannot be related through global parametric transformation due to the arbitrary individual pixel movement between frame pairs. Hence a local motion model needs to be used for frame alignment. An accurate alignment is the key to success of reconstruction-based super-resolution algorithms. Motivated by this challenge we propose to employ region-matching technique for image registration in this paper. The proposed algorithm consists of the alignment step to produce a blurred version of the HR frame and the restoration step to estimate the HR frame. The experimental results of the proposed algorithm are compared with the results of using affine, block matching, and optical flow motion models. It is shown that the use of region matching for SR is very promising in producing higher quality images.

Citation Download Citation

Osama A. Omer and Toshihisa Tanaka "Super-resolution based on region-matching motion estimation", Proc. SPIE 6508, Visual Communications and Image Processing 2007, 65081O (29 January 2007); https://doi.org/10.1117/12.703476

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