The Prime Illusion

2014 ◽  
pp. 233-263
Author(s):  
Martin Richardson
Keyword(s):  
Public Opinion ◽  
Three Dimensional ◽  
Three Dimensional Imaging ◽  
Wavefront Reconstruction ◽  
Three Dimensional Objects ◽  
Body Worlds ◽  
Royal Observatory ◽  
Maritime Museum

This final chapter focuses on the potential of three-dimensional imaging. In particular the medium’s ability to record three-dimensional objects, as with the holograms made of John Harrison’s famous fourth timekeeper “H4” for the Royal Observatory, National Maritime Museum in Greenwich, London, and the strange case of Professor Günter von Hagen and his “BODY WORLDS: The Anatomical Exhibition of Real Human Bodies,” who seriously explored its potential but relinquished its further exploration due to negative public opinion of his exhibitions at that time. Holographic stereograms are also discussed, in particular their ability to capture animation, as detailed in Case Study Three: Holograms of David Bowie. The text also explores some future applications of wavefront reconstruction.

Wavefront Reconstruction for Structured Light based Microscopic Three-dimensional Imaging

2020 ◽  
Author(s):  
Taichu Shi ◽  
Yang Qi ◽  
Haoshuo Chen ◽  
Nicolas K. Fontaine ◽  
Roland Ryf ◽  
...  
Keyword(s):  
Structured Light ◽  
Three Dimensional ◽  
Three Dimensional Imaging ◽  
Wavefront Reconstruction

Image processing of conventional TEM images: a catalyst case study

1995 ◽  
Vol 53 ◽  
pp. 118-119
Author(s):  
J. M. Briceño-Valero ◽  
L. Martinez ◽  
K. Moore ◽  
V. Grassian
Keyword(s):  
Image Processing ◽  
Supported Catalysts ◽  
Three Dimensional ◽  
Particle Characterization ◽  
Flatbed Scanner ◽  
Three Dimensional Objects ◽  
Transmission Electron ◽  
Platinum Particles ◽  
Inherent Problem

Particle characterization with the Transmission Electron Microscope (TEM) has the inherent problem of interpreting three dimensional objects from two-dimensional projections. Relevant questions when measuring small particles include how projection of the image will distort measurement of crystallite size, and how will the image distort the morphology of the particle Another difficulty is the effect of overlapping images from two or more particles. In the case of supported catalysts, an additional problem may be termed "differential contrast" which interferes with distinguishing between the supported metal crystallites and the support itself. While these situations may appear to be quite different, the is a shared concern of how the general appearance of the particle image related to its real shape. Image processing technology can be used to extract and display hidden information from conventional TEM micrographs. In this study, platinum particles supported on silica were examines.TEM images were taken at 80,000X magnification with a Hitachi H-600 at 100 kV, digitally acquired using an Imapro QCS 3200 flatbed scanner at 3200 dots per inch.

Three-dimensional computational holographic imaging and recognition using independent component analysis

2007 ◽  
Vol 464 (2090) ◽  
pp. 409-422 ◽  
Author(s):  
Cuong Manh Do ◽  
Bahram Javidi
Keyword(s):  
Independent Component Analysis ◽  
Three Dimensional ◽  
Component Analysis ◽  
Independent Component ◽  
Phase Shifting ◽  
Three Dimensional Imaging ◽  
Three Dimensional Objects ◽  
Holographic Imaging ◽  
Components Analysis ◽  
Kurtosis Maximization

We present computational holographic three-dimensional imaging and automated object recognition based on independent component analysis (ICA). Three-dimensional sensing of the scene is performed by computational holographic imaging of the objects using phase-shifting digital holography. We used principal components analysis to reduce data dimension and ICA to recognize the three-dimensional objects. In this paper, kurtosis maximization-based algorithm is used. To the best of our knowledge, this paper is the first to report using ICA in three-dimensional imaging technology.

Construction of plastic contact deformation maps on ceramics: a case study on aluminum nitride

1996 ◽  
Vol 54 ◽  
pp. 636-637
Author(s):  
D. L. Callahan
Keyword(s):  
Plastic Deformation ◽  
Aluminum Nitride ◽  
Mechanical Response ◽  
Three Dimensional ◽  
Bright Field Image ◽  
Perfectly Plastic ◽  
Contrast Analysis ◽  
Deformation Patterns

Modern polishing, precision machining and microindentation techniques allow the processing and mechanical characterization of ceramics at nanometric scales and within entirely plastic deformation regimes. The mechanical response of most ceramics to such highly constrained contact is not predictable from macroscopic properties and the microstructural deformation patterns have proven difficult to characterize by the application of any individual technique. In this study, TEM techniques of contrast analysis and CBED are combined with stereographic analysis to construct a three-dimensional microstructure deformation map of the surface of a perfectly plastic microindentation on macroscopically brittle aluminum nitride.The bright field image in Figure 1 shows a lg Vickers microindentation contained within a single AlN grain far from any boundaries. High densities of dislocations are evident, particularly near facet edges but are not individually resolvable. The prominent bend contours also indicate the severity of plastic deformation. Figure 2 is a selected area diffraction pattern covering the entire indentation area.

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