CImCombine:MaskedMean

The MaskedMean method merges the pixel values excluding 0-value pixels from the distribution at each point. The value 0 is therefore a mask value.

Syntax

CImage = CImCombine:MaskedMean( CImageSet )

CImageSet contains the collection of images to be combined.
CImage is a new image created by this method.
On success, this method returns a new CImage.
On failure, this method returns nil.

Remarks

Each pixel in the output image is the mean value of all images except for those with a value of zero (0).

Example

Suppose a CImageSet named S exists. The following script fragment combines the images by the MaskedMean method. The images are normalized by the Median statistic computed inside the central 10% of the image:

C = CImCombine:new()	-- create a CImCombine object
R = CRect:new(10,50,10,50)	-- central 10% of the image
C:SetRelRect( R )	-- specify CImage and CRect to measure
C:SetNormStat("median")	-- use the MmClip as the normalization statistic
C:SetNormMethod("scale")	-- scale to normalize the image set
I = C:MaskedMean( S )	-- combine the image set and return a new image
I:Display()	-- show the new image
C:delete()	-- when done with S, remove it from memory