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

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Presentation on theme: "By: Luis Fuentes-Montero (Luiso) Esmeralda, program for treating Laue images."— Presentation transcript:

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

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

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 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)

11 Orienting with Esmeralda

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14 orienting the crystal

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16 Evolution and improvement in the peak integration algorithm

17 Peak integration Background subtraction

18 Peak integration Background Treatment I1

19 Peak integration Background subtraction

20 Peak integration Pixel treatment

21 Peak integration Pixel treatment

22 Peak integration Pixel treatment

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

24 Integration along a curve

25 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

26 peculiarities of stereographic projection

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

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