Read Computer Processing of Electron Microscope Images (Topics in Current Physics)

[Free.mOKL] Computer Processing of Electron Microscope Images (Topics in Current Physics)

[Free.mOKL] Computer Processing of Electron Microscope Images (Topics in Current Physics)

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Book Details :
Published on: 1980-01-01
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Original language: English

Towards the end of the 1960s, a number of quite different circumstances combined to launch a period of intense activity in the digital processing of electron micro­ graphs. First, many years of work on correcting the resolution-limiting aberrations of electron microscope objectives had shown that these optical impediments to very high resolution could indeed be overcome, but only at the cost of immense exper­ imental difficulty; thanks largely to the theoretical work of K. -J. Hanszen and his colleagues and to the experimental work of F. Thon, the notions of transfer func­ tions were beginning to supplant or complement the concepts of geometrical optics in electron optical thinking; and finally, large fast computers, capable of manipu­ lating big image matrices in a reasonable time, were widely accessible. Thus the idea that recorded electron microscope images could be improved in some way or rendered more informative by subsequent computer processing gradually gained ground. At first, most effort was concentrated on three-dimensional reconstruction, particu­ larly of specimens with natural symmetry that could be exploited, and on linear operations on weakly scattering specimens (Chap. l). In 1973, however, R. W. Gerchberg and W. O. Saxton described an iterative algorithm that in principle yielded the phase and amplitude of the electron wave emerging from a strongly scattering speci­ men. ScienceDaily: Your source for the latest research news ScienceDaily features breaking news about the latest discoveries in science health the environment technology and more -- from major news services and ... Resolve a DOI Name Type or paste a DOI name into the text box. Click Go. Your browser will take you to a Web page (URL) associated with that DOI name. Send questions or comments to doi ... Molecular Expressions: Images from the Microscope Welcome to the Molecular Expressions website featuring our acclaimed photo galleries that explore the fascinating world of optical microscopy. Technology and Science News - ABC News Get the latest science news and technology news read tech reviews and more at ABC News. University of Georgia The major in Accounting at UGA is designed to give students an understanding of the theory of accounting as it is used in our society: accounting standards financial ... Wizkids Dedicated to creating games driven by imagination Prepare to do fearsome battle in the Regional Championships for HeroClix and Dice Masters as well as many other amazing side events in the Winter 2017 WizKids Open. Search Content Science News An enduring source of magma on Mars fueled volcanic eruptions for billions of years clues inside a rock flung from the Red Planet reveal. The newfound rock belongs ... Conferences and Meetings on Condensed Matter Physics and ... Scientific Conference Calendar of Conferences and Meetings on Condensed Matter Physics and Materials X-ray - Wikipedia X-ray detectors vary in shape and function depending on their purpose. Imaging detectors such as those used for radiography were originally based on photographic ... Holography - Wikipedia Holography is the science and practice of making holograms. Typically a hologram is a photographic recording of a light field rather than of an image formed by a ...
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