Time-coded aperture for x-ray imaging
- Resource Type
- Authors
- Dog A. Gürsoy; Daniel Ching; Viktor Nikitin; Selin Aslan
- Source
- Optics Letters. 44:2803
- Subject
- Deblurring
Image quality
Computer science
business.industry
Motion blur
Detector
ComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISION
02 engineering and technology
021001 nanoscience & nanotechnology
01 natural sciences
Atomic and Molecular Physics, and Optics
Photon counting
010309 optics
Optics
Kernel (image processing)
Computer Science::Computer Vision and Pattern Recognition
Shutter
0103 physical sciences
Computer vision
Artificial intelligence
Coded aperture
0210 nano-technology
business
ComputingMethodologies_COMPUTERGRAPHICS
- Language
- ISSN
- 1539-4794
0146-9592
We describe a computational imaging system for x-ray tomography, where image capture and post-processing are co-designed to improve final image quality when relative motion of an experiment’s components during a single exposure causes motion blur. The idea is based on temporally encoding the motion during each exposure by fluttering the detector shutter open and closed with a known sequence for guaranteeing an invertible motion blur kernel. While generally applicable, we demonstrate our approach by simulating blurry data acquisition for transmission x-ray tomography and deblurring the reconstructed images. The results suggest that optimized pseudo-random binary time-coded apertures can yield successful reconstructions independent of the size of the blur kernel. This Letter is especially relevant to high-speed x-ray tomography applications where time-resolution is limited by the detector or available photon flux.