By: Luis Fuentes-Montero (Luiso) Esmeralda, program 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 Handling Different colour Palettes
Image Handling Adjustable 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
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 ( , ) I= ( , ) I=
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
How to contact Luiso: