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Proceedings Paper

Resolution enhancement of low-quality videos using a high-resolution frame
Author(s): Tuan Q. Pham; Lucas J. van Vliet; Klamer Schutte
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Paper Abstract

This paper proposes an example-based Super-Resolution (SR) algorithm of compressed videos in the Discrete Cosine Transform (DCT) domain. Input to the system is a Low-Resolution (LR) compressed video together with a High-Resolution (HR) still image of similar content. Using a training set of corresponding LR-HR pairs of image patches from the HR still image, high-frequency details are transferred from the HR source to the LR video. The DCT-domain algorithm is much faster than example-based SR in spatial domain6 because of a reduction in search dimensionality, which is a direct result of the compact and uncorrelated DCT representation. Fast searching techniques like tree-structure vector quantization16 and coherence search1 are also key to the improved efficiency. Preliminary results on MJPEG sequence show promising result of the DCT-domain SR synthesis approach.

Paper Details

Date Published: 19 January 2006
PDF: 10 pages
Proc. SPIE 6077, Visual Communications and Image Processing 2006, 607708 (19 January 2006); doi: 10.1117/12.643489
Show Author Affiliations
Tuan Q. Pham, Delft Univ. of Technology (Netherlands)
Lucas J. van Vliet, Delft Univ. of Technology (Netherlands)
Klamer Schutte, TNO Physics and Electronics Lab. (Netherlands)

Published in SPIE Proceedings Vol. 6077:
Visual Communications and Image Processing 2006
John G. Apostolopoulos; Amir Said, Editor(s)

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