< 

 Lazy View and Handle 

  

 

 

full orientations

 

flat grains

 

 

INTRODUCTION

The Lazy View and Handle macro is designed to performa few calculations and/or corrections on the primary orientation images AZI (azimuth) and INC (inclination).

The macro also allows the preparation of 'flat' orientation images (OGI) for comparison with EBSD images. Flat OGIs display only one orientation per grain and have sharp grain boundaries, as shown on the left.

 

 

   

 

GETTING STARTED

Load View and Handle macro.

The macros are grouped as follows:

  • import RAW images and set LUTs
  • calculate and manipulate AZI images
  • correct INC file
  • make flat grains

 

 


Angle of maximum brightness (FMAX)

 

 

FMAX with LUT for conversion to AZI

 

Azimuth image

 

 

CONVERTING FMAX TO AZI

Using [F], a LUT is invoked which converts the phase angle ρ(max) of the brightness function G(ρ) to azimuth
 

 


Inclination image

 

[G] 10° gaps closed

 

[W] 10° wrapped

 

[X] 10° reflected

 

 

MODIFYING INCLINATIONS

  • [W] stretches inclination values from lower to upper limit between 0° and 180° - the cut-off values are wrapped across the center of the pole figure.
  • [X] stretches inclination values from lower to upper limit between 0° and 180° - the cut-off values are reflected at the center of the pole figure.
  • [G] stretches inclination values from lower to upper limit between 0° and 90° and between 90° and 180° - the cut-off values are set to 0° 90° and 180°, respectively.
     

 

 

Detail of flat inclination image [1]

 

Same site with flat grains expanded and Median filtered [2],[3]

 
 

C-axis orientation image with pole figure
(Pole figure max = 5.2)

 

 

Same, converted to flat grains with pole figure (Pole figure max = 9.2)

 

 

 

FLAT GRAINS


  • [1] uses a stack with 5 slices:
    1. azimuth image
    2. inclination image
    3. grain map
    4. empty image for flat azimuth
    5. empty image for flat inclination
    for each grain an average orientation is calculated and the whole grain is set to this value
  • [2] expands the grains such that they touch each other
  • [3] Median filter is applied to remove 'empty' pixels