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Published byEdwin Maxwell Modified over 9 years ago
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By: Luis Fuentes-Montero (Luiso) Esmeralda, program for treating Laue images
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What does ESMERALDA do? Image Visualizations Algorithms for finding peaks Tools for crystal orientation Intensity integration Saves files to be used at next stages
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Image Handling Different colour Palettes
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Image Handling Adjustable contrast
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Image Handling 3D view
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Image Handling Peak finding Tool
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Image Handling Peak finding Tool
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Image Handling Peak finding Tool
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Image Handling Peak finding Tool
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Three algorithms for orienting the crystal automatically Angular comparison The fastest one Almost completely automatic No need of starting point Almost always finds a solution All Possible rotations The Slowest one Completely automatic If there is a starting point becomes not so slow Always finds a solution Almost as fast as angular comparison Almost completely automatic No need of starting point Always finds a solution Scanning and successive approaches (Renninger rotations)
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Orienting with Esmeralda
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orienting the crystal
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Evolution and improvement in the peak integration algorithm
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Peak integration Background subtraction
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Peak integration Background Treatment I1
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Peak integration Background subtraction
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Peak integration Pixel treatment
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Peak integration Pixel treatment
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Peak integration Pixel treatment
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Peak integration d1 d2 Pixel treatment P I1 I2 (-312.6782, -50.82541 ) I= 373636.9 (-307.6769, -49.22461 ) I= 145032.8
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Integration along a curve
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Steps to follow (time to run Esmerlada) Edit cfl file with new cell Open cfl file Open image(s) Adjust contrast Find peaks Select nodal peaks View calculated spots and compare with the experimental ones (in quantity) Adjust wavelength parameters Try to orient a few times with automatic algorithms. Try to orient manually. Have a look at the symmetry and compare calculated- experimental
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peculiarities of stereographic projection
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How to contact Luiso: fuentes-montero@ill.fr luiso_cub@yahoo.com luicub@gmail.com
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