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CImage:Log
The Log method computes the base e logarithm of the pixel values.
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bResult = CImage:Log() |
On success,
this method returns true
On failure,
this method returns false.
The Log operation can produce a log of a negative number error if the pixel values are 0 or less. Mira traps this case and assigns a resultant value to the pixel as defined by the SetMathErrVal method.
The following script fragment loads an image from the file sPath, computes the log-e of all the pixels, and saves the result back to the file:
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I = CImage:new() |
-- create a new CImage |
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I:Open(sPath) |
-- load the image from a file named sPath |
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I:Log() |
-- perform the operation |
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I:Save() |
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