Hints and tips - Solver setup
Hough Settings
Filter Size
The Hough filter size needs to be adjusted to match the size of the peaks found in the transform.
Normally, the default setting (9) can be used as shown in the diffraction patterns below
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Diffraction pattern from nickel collected at 30 kV accelerating voltage |
Hough transform of this diffraction pattern with the peaks marked in the same color as the corresponding Kikuchi band. |
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If the bands are wider - because the accelerating voltage is reduced or the material has small d-spacings - the filter size must changed.
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Diffraction pattern from nickel collected at 10 kV accelerating voltage using filter size 9. Not all the Kikuchi bands have been found |
Hough transform of this diffraction pattern. The peaks are broader. | Same diffraction pattern using filter size 15. The Kikuchi bands are now found (The broadest bands are omitted, but sufficient bands are found to calculate an orientation.) | The corresponding Hough transform. |
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