Heuristic optimization in penumbral image for high resolution reconstructed image

Journal Article · Fri Oct 15 00:00:00 EDT 2010 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.3483211· OSTI ID:22055892

Azuma, R; Nozaki, S ^[1]; Fujioka, S ^[2]; Chen, Y W ^[3]; Namihira, Y ^[4]

---

1. Transdisciplinary Research Organization for Subtropics and Island Studies, University of the Ryukyus, Okinawa 903-0213 (Japan)
2. Institute of Laser Engineering, Osaka University, Osaka 565-0871 (Japan)
3. College of Information Science and Engineering, Ritsumeikan University, Shiga 525-8577 (Japan)
4. Faculty of Engineering, University of the Ryukyus, Okinawa 903-0213 (Japan)

Penumbral imaging is a technique which uses the fact that spatial information can be recovered from the shadow or penumbra that an unknown source casts through a simple large circular aperture. The size of the penumbral image on the detector can be mathematically determined as its aperture size, object size, and magnification. Conventional reconstruction methods are very sensitive to noise. On the other hand, the heuristic reconstruction method is very tolerant of noise. However, the aperture size influences the accuracy and resolution of the reconstructed image. In this article, we propose the optimization of the aperture size for the neutron penumbral imaging.

• OSTI ID: 22055892
• Journal Information: Review of Scientific Instruments, Vol. 81, Issue 10; Other Information: (c) 2010 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0034-6748
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
ACCURACY
APERTURES
IMAGE PROCESSING
IMAGES
NEUTRONS
NOISE
OPTIMIZATION
RESOLUTION