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CImage:SetMaskedValue
The SetMaskedValue method assigns a new value to pixels at coordinates stored in a pixel mask file. One application of this method is for repairing small small defects in the form of points and single-pixel wide lines.
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bResult = CImage:SetMaskedValue( value, sMaskFile, CRect=nil ) |
value is a number or string specifying the
replacement value.
sMaskFile is the name of the text file containing
the pixel
mask.
The rectangular
region to repair is specified by a CRect, with 1-based coordinates. If omitted, the
entire image is repaired.
On success,
this method returns true.
On failure,
false is returned.
This method replaces pixels with a new value specified by the value argument. The target coordinates are loaded from a Pixel Mask File. The related ApplyPixelMask method replaces pixels with a locally computed neighborhood value rather than a fixed value.
Assume that a pixel mask file named sMaskFile exists. The following script fragment sets pixel values to -1000 at coordinates listed in the pixel mask file. The CRect argument is not used so that the entire image is available. Note: The entire image could also be used with the CRect argument after calling CRect:SetToImage:
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I = CImage:new() |
-- Create a CImage |
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I:Open( sPath ) |
-- Open the image from sPath. |
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I:SetMaskedValue(-1000,sMaskFile) |
-- apply the pixel mask |
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I:Save() |
-- save the image |
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I:delete() |
-- delete the CImage from memory |