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<< Click to display Table of content >> Z Accuracy |
  
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<< Click to display Table of content >> Z Accuracy |
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More and more ground are grids (ASC Format) with millions of points. A new parameter was added to optimize MithraREM ground creation. This new Z accuracy parameter reduces the number of ground points with a very limited lack of precision.
It reduces points considering a maximum tolerated gap between the initial data and MithraREM ground. An altitude comparison is done for each point between a complete data triangulation and an approximate triangulation while remaining inside the tolerance.
The result thus obtained represents the ground feature points: thalwegs, crests (mounds), summits, hollows, break points (banks).
Tolerance |
None |
20cm |
1m |
Number of Ground points |
4.000.000 |
14.881 |
1.495 |
Visualization of Ground points |
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Operating principle
Ground section (pixels => points) without tolerance |
Ground section (pixels => points) with tolerance |
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