By: Luis Fuentes-Montero(Luiso)

Esmeralda,Esmeralda,program for treating Laue imagesprogram for treating Laue images

What does ESMERALDA do?

• Image Visualizations• Algorithms for finding peaks• Tools for crystal orientation• Intensity integration• Saves files to be used at next stages

Image HandlingDifferent colour Palettes

Image HandlingAdjustable contrast

Image Handling• 3D view

Image Handling

Peak finding Tool

Image Handling

Peak finding Tool

Image Handling Peak finding Tool

Image Handling Peak finding Tool

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)

Orienting with Esmeralda

orienting the crystal

orienting the crystal

Evolution and improvement in the peak integration algorithm

Peak integration Background subtraction

Peak integration

Background Treatment

I1

Peak integration Background subtraction

Peak integration Pixel treatment

Peak integration Pixel treatment

Peak integration Pixel treatment

Peak integration

d1

d2

Pixel treatment

P

I1

I2(-312.6782 , -50.82541 ) I= 373636.9 (-307.6769 , -49.22461 ) I= 145032.8

Integration along a curve

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

peculiarities of stereographic projection

peculiarities of stereographic projection

peculiarities of stereographic projection

peculiarities of stereographic projection

How to contact Luiso:

fuentes-montero@ill.frluiso_cub@yahoo.comluicub@gmail.com