High resolution image formation from low resolution frames using Delaunay triangulation

Author

Lertrattanapanich, S. ; Bose, N.K.

Author_Institution

Dept. of Electr. Eng., Pennsylvania State Univ., University Park, PA, USA

Volume

11

Issue

12

fYear

2002

fDate

12/1/2002 12:00:00 AM

Firstpage

1427

Lastpage

1441

Abstract

An algorithm based on spatial tessellation and approximation of each triangle patch in the Delaunay (1934) triangulation (with smoothness constraints) by a bivariate polynomial is advanced to construct a high resolution (HR) high quality image from a set of low resolution (LR) frames. The high resolution algorithm is accompanied by a site-insertion algorithm for update of the initial HR image with the availability of more LR frames till the desired image quality is attained. This algorithm, followed by post filtering, is suitable for real-time image sequence processing because of the fast expected (average) time construction of Delaunay triangulation and the local update feature.

Keywords

approximation theory; filtering theory; image resolution; image sequences; polynomials; reviews; Delaunay triangulation; bivariate polynomial; high quality image; high resolution algorithm; high resolution image formation; image quality; local update surface fitting; low resolution frames; post filtering; real-time image sequence processing; site-insertion algorithm; smoothness constraints; spatial tessellation; triangle patch approximation; Degradation; Filtering; Image resolution; Image sequences; Interpolation; Optical diffraction; Pixel; Signal resolution; Spatial resolution; Surface fitting;

fLanguage

English

Journal_Title

Image Processing, IEEE Transactions on

Publisher

ieee

ISSN

1057-7149

Type

jour

DOI

10.1109/TIP.2002.806234

Filename

1176931