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By: Luis Fuentes-Montero (Luiso)

Esmeralda, program for treating Laue images. By: Luis Fuentes-Montero (Luiso). Image Visualizations Algorithms for finding peaks Tools for crystal orientation Intensity integration Saves files to be used at next stages. What does ESMERALDA do?. Image Handling. Different colour Palettes.

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By: Luis Fuentes-Montero (Luiso)

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  1. Esmeralda, program for treating Laue images By: Luis Fuentes-Montero (Luiso)

  2. Image Visualizations • Algorithms for finding peaks • Tools for crystal orientation • Intensity integration • Saves files to be used at next stages What does ESMERALDA do?

  3. Image Handling Different colour Palettes

  4. Image Handling Adjustable contrast

  5. Image Handling • 3D view

  6. Image Handling Peak finding Tool

  7. Image Handling Peak finding Tool

  8. Image Handling Peak finding Tool

  9. Image Handling Peak finding Tool

  10. Three algorithms for orienting the crystal automatically Angular comparison All Possible rotations The Slowest one Completely automatic If there is a starting point becomes not so slow Always finds a solution Scanning and successive approaches (Renninger rotations) • The fastest one • Almost completely automatic • No need of starting point • Almost always finds a solution • Almost as fast as angular comparison • Almost completely automatic • No need of starting point • Always finds a solution

  11. Orienting with Esmeralda

  12. orienting the crystal

  13. orienting the crystal

  14. Evolution and improvement in the peak integration algorithm

  15. Background subtraction Peak integration

  16. Peak integration I1 Background Treatment

  17. Background subtraction Peak integration

  18. Pixel treatment Peak integration

  19. Pixel treatment Peak integration

  20. Pixel treatment Peak integration

  21. Pixel treatment Peak integration P d1 I1 d2 I2 (-312.6782 , -50.82541 ) I= 373636.9 (-307.6769 , -49.22461 ) I= 145032.8

  22. Integration along a curve

  23. 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

  24. peculiarities of stereographic projection

  25. peculiarities of stereographic projection

  26. peculiarities of stereographic projection

  27. peculiarities of stereographic projection

  28. How to contact Luiso: fuentes-montero@ill.fr luiso_cub@yahoo.com luicub@gmail.com

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