Realizing increased sub-pixel spatial resolution in X-ray imaging using displaced multiple images
✍ Scribed by Jan Thim; Börje Norlin; Mattias O’Nils; Suliman Abdalla; Bengt Oelmann
- Publisher
- Elsevier Science
- Year
- 2011
- Tongue
- English
- Weight
- 408 KB
- Volume
- 633
- Category
- Article
- ISSN
- 0168-9002
No coin nor oath required. For personal study only.
✦ Synopsis
A method, generally called oversampling, to reach sub-pixel resolution by taking slightly displaced images of an object is investigated for X-ray applications. By mounting the sensor on a high precision step motor table it is possible to increase the spatial resolution from 55 mm  55 mm to at least 20 mm  20 mm, which is required for quality assurance measurements in several industry processes.
The performance compared to physically smaller pixels is shown, and the effects of charge sharing on the method are investigated. The suggested method is relatively cost effective compared to using X-ray microscopy.