Title :
A fast algorithm of video super-resolution using dimensionality reduction by DCT and example selection
Author :
Watanabe, Kiyotaka ; Iwai, Yoshio ; Haga, Tetsuji ; Yachida, Masahiko
Author_Institution :
Mitsubishi Electr. Corp., Amagasaki
Abstract :
In this paper, we propose a novel learning-based video super resolution algorithm with less memory requirements and computational cost. To this end, we adopt discrete cosine transform (DCT) coefficients for feature vector components. Moreover, we design an example selection procedure to construct a compact database. We conducted evaluative experiments using MPEG test sequences to synthesize a high resolution video. Experimental results show that our method can improve effectiveness of super-resolution algorithm, while preserving the quality of synthesized image.
Keywords :
discrete cosine transforms; image resolution; video signal processing; DCT; compact database; dimensionality reduction; feature vector components; high resolution video; learning-based video super resolution algorithm; synthesized image quality; video super-resolution; Cameras; Computational efficiency; Discrete cosine transforms; Image databases; Image resolution; Nearest neighbor searches; Principal component analysis; Spatial databases; Strontium; Video sequences;
Conference_Titel :
Pattern Recognition, 2008. ICPR 2008. 19th International Conference on
Conference_Location :
Tampa, FL
Print_ISBN :
978-1-4244-2174-9
Electronic_ISBN :
1051-4651
DOI :
10.1109/ICPR.2008.4761399