PRECISION SHELL CHARACTERIZATION USING RADIAL AVERAGING OF X-RAY IMAGES

被引：16

作者：

STEPHENS, RB

机构：

[1] General Atomics, San Diego, California 92186-9784

来源：

JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A-VACUUM SURFACES AND FILMS | 1995年 / 13卷 / 03期

关键词：

D O I：

10.1116/1.579661

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Radially averaging the image of a circular object makes full use of structural information contained in the photograph and optimizes interface detection and location. Measurement of shell dimensions from x-radiograph plates are limited by film graininess and camera resolution. These noise sources make edge determination using single line-outs very uncertain. The radial average process, by coherently adding radial line-outs from the entire circumference, greatly reduces that noise. Our system can detect interfaces between plastic layers with only slight differences in x-ray opacity and locate surface radii with an uncertainty of ≈0.2μ;m. This capability has been created with a desktop computer and slight modification to a freeware image processing program, and careful system design. © 1995, American Vacuum Society. All rights reserved.

引用

页码：979 / 982

页数：4