A method for rectifying grid junctions in grid-coded images using cross ratio

Author

Chia, Tsorng-lin ; Chen, Zen ; Yueh, Chaur-Jou

Author_Institution

Dept. of Electr. Eng., Chung Cheng Inst. of Technol., Taoyuan, Taiwan

Volume

5

Issue

8

fYear

1996

fDate

8/1/1996 12:00:00 AM

Firstpage

1276

Lastpage

1281

Abstract

In the grid-coding technique, the accurate grid junction locations are vital to the surface computation. Noise arising from the imaging formation and processing processes will jeopardize the computation accuracy. The objective of this study is to make use of the geometric property of cross ratio to improve the accuracy of grid junction locations in grid-coded images. A method is devised to regenerate grid junctions from the original (i.e. raw) junction data of an image. Through a statistical error analysis, we show that the regenerated junction data are generally more accurate than the old ones in the image taken from a wide range of viewing angles

Keywords

computational geometry; edge detection; error analysis; image coding; statistical analysis; accurate grid junction locations; cross ratio; geometric property; grid junctions regeneration; grid-coded images; grid-coding technique; image coding; regenerated junction data; statistical error analysis; surface computation; viewing angles; Computer science; Councils; Error analysis; Grid computing; Laser beams; Noise reduction; Optical collimators; Surface emitting lasers; Surface reconstruction; Three dimensional displays;

fLanguage

English

Journal_Title

Image Processing, IEEE Transactions on

Publisher

ieee

ISSN

1057-7149

Type

jour

DOI

10.1109/83.506763

Filename

506763