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CStats:MinClipMean
The MinClipMean method computes the minimum-clipped mean value inside a rectangular region of the image. The rectangle and image must have been previously initialized for the CStats object.
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nMean = CStats:MinClipMean() |
On success,
returns the min-clipped mean value as a number.
On failure,
returns 0.
Suppose a CImage named I and a CRect named R exist. The following script fragment returns the mean value inside a rectangle on the image, discarding the 1 lowest pixel value:
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S = CStats:new() |
-- create a CStats object |
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S:Init( I, R ) |
-- specify CImage and CRect to measure |
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nVal = S:MinClipMean() |
-- returns the mean value for this CImage and CRect |
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Printf("mean=%lg\n", nVal) |
-- list the results |
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S:delete() |
-- when done with S, remove it from memory |
The calculated statistic excludes the lowest (minimum value) pixel inside the region. Use this method to avoid a biased result when the region is known to contain one deviant, low pixel value.