Topic
Imaging technology
About: Imaging technology is a research topic. Over the lifetime, 1450 publications have been published within this topic receiving 26186 citations.
Papers published on a yearly basis
Papers
More filters
••
6 citations
••
TL;DR: The physical nature and characteristics of the image ranging technology are examined, the potential for further system characterization and calibration to compensate for the range determination and other errors are discussed, which could possibly lead to three-dimensional measurement precision approaching that of photogrammetry.
Abstract: Solid-state full-field range imaging technology, capable of determining the distance to objects in a scene simultaneously for every pixel in an image, has recently achieved sub-millimeter distance measurement precision. With this level of precision, it is becoming practical to use this technology for high precision three-dimensional metrology applications. Compared to photogrammetry, range imaging has the advantages of requiring only one viewing angle, a relatively short measurement time, and simplistic fast data processing. In this paper we fist review the range imaging technology, then describe an experiment comparing both photogrammetric and range imaging measurements of a calibration block with attached retro-reflective targets. The results show that the range imaging approach exhibits errors of approximately 0.5 mm in-plane and almost 5 mm out-of-plane; however, these errors appear to be mostly systematic. We then proceed to examine the physical nature and characteristics of the image ranging technology and discuss the possible causes of these systematic errors. Also discussed is the potential for further system characterization and calibration to compensate for the range determination and other errors, which could possibly lead to three-dimensional measurement precision approaching that of photogrammetry.
6 citations
••
01 Dec 2013
TL;DR: The results show that hyper-spectral video endoscopy exhibits a large potential to become an important imaging technology for medical imaging devices that provide additional diagnostic information about the tissue under investigation.
Abstract: Video endoscopy systems give physicians the ability to inspect internal structures of the human body by using a camera with attached endoscope optics. This technology has become a routine in clinics all over the world. Moreover, video endoscopy systems recently performed a technological change from PAL/NTSC image resolution to HDTV. There is a vast of literature on in-vivo and in-vitro experiments with multi-spectral point and imaging instruments that document that the spectral information can be a valuable diagnostic decision support. Due to the fact that spectral imaging equipment was too slow to acquire hyper-spectral image stacks at reasonable video rates, intra-surgery hyper-spectral measurements were limited to point measurements in the past. But the availability of fast and versatile acousto optical tunable filters with switching times in the microsecond range made the application of a hyper-spectral video endoscope technically feasible. This paper describes a demonstrator of a hyper-spectral video endoscope, the data analysis and the results of the first clinical studies. The results show that hyper-spectral video endoscopy exhibits a large potential to become an important imaging technology for medical imaging devices that provide additional diagnostic information about the tissue under investigation.
6 citations
••
TL;DR: Making films of atomic-scale processes as they happen makes huge demands on any imaging system, so one approach combines the advantages of pulsed laser harmonics and computerized image reconstruction.
Abstract: Making films of atomic-scale processes as they happen makes huge demands on any imaging system. One approach combines the advantages of pulsed laser harmonics and computerized image reconstruction.
6 citations
••
TL;DR: Researchers develop a high-sensitivity, label-free imaging technology based on stimulated Raman scattering that reduces the need for label-based labeling in the future.
Abstract: Researchers develop a high-sensitivity, label-free imaging technology based on stimulated Raman scattering.
6 citations