by: luis fuentes-montero (luiso)
DESCRIPTION
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. - PowerPoint PPT PresentationTRANSCRIPT
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
