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Ultrafast Streaming Camera Platform for Scientific Applications

IEEE TRANSACTIONS ON NUCLEAR SCIENCE 2013年第5期60卷 3669-3677页

作者： Caselle, Michele Chilingaryan, Suren Herth, Armin Kopmann, Andreas Stevanovic, Uros Vogelgesang, Matthias Balzer, Matthias Weber, Marc Karlsruhe Inst Technol Inst Inst Data Proc & Elect D-76021 Karlsruhe Germany

X-ray computer tomography is a powerful method for nondestructive investigations in many fields. Three-dimensional images of internal structure are reconstructed from a sequence of two-dimensional projections. The polychromatic high density photon flux of modern synchrotron light sources offer hard X-ray imaging with spatio-temporal resolution up to the micrometer and micrometers range. Existing indirect X-ray image detection systems can be adapted for fast image acquisition by high-speed visible-light cameras. In this paper, we present a platform for custom high-speed CMOS cameras with embedded field-programmable gate array (fpga) processing. This modular system is characterized by a high-throughput PCI Express (PCIe) interface and efficient communication blocks. It has been used to develop a novel architecture for a self-event trigger that increases the effective image frame rate and reduces the amount of received data. Thanks to a low-noise design, high frame rates in the kilohertz range, and high-throughput data transfer, this camera is well suited for ultrafast synchrotron-based X-ray radiography and tomography. The camera setup is accomplished by high-throughput Linux drivers and a seamless integration in our GPU computing framework.

关键词： CMOS-image sensor fpga real-time parallel data processing high-speed imaging

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Ultra-Fast Streaming Camera Platform for Scientific Applications

Ultra-Fast Streaming Camera Platform for Scientific Applicat...

引用

18th IEEE-NPSS real time Conference (RT)

作者： Caselle, Michele Chilingaryan, Suren Herth, Armin Kopmann, Andreas Stevanovic, Uros Vogelgesang, Matthias Balzer, Matthias Weber, Marc Karlsruhe Inst Technol Inst Data Proc & Elect D-76021 Karlsruhe Germany

ISBN: (纸本)9781467310826;9781467310833

X-ray computed tomography (CT) is a method for non-destructive investigation. Three-dimensional images of internal structure can be reconstructed using a two-dimensional detector. The poly-chromatic high density photon flux in the modern synchrotron light sources offers hard X-ray imaging with a spatio-temporal resolution up to the mu m-mu s range. Existing indirect X-ray image detectors can be adapted for fast image acquisition by employing CMOS-based digital high speed camera. In this paper, we propose a high-speed visible light camera based on commercial CMOS sensor with embedded processing implemented in fpga. This platform has been used to develop a novel architecture for a self-event trigger. This feature is able to increase the original frame rate of the CMOS sensor and reduce the amount of the received data. Thanks to a low noise design, high frame rate (kilohertz range) and high speed data transfer, this camera can be employed in modern synchrotron ultra-fast X-ray radiography and computed tomography. The camera setup is accomplished by high-throughput Linux drivers and a seamless integration in our GPU computing framework. Selected applications from life sciences and materials research underline the high potential of this high-speed camera in a hard X-ray micro-imaging approach.

关键词： high-speed imaging CMOS-image sensor fpga real-time parallel data processing

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