CImage:CreatePixelMaskLow

The CreatePixelMaskLow method creates a pixel mask file containing the coordinates of pixels having values below a threshold value.

Syntax

bSuccess = CImage:CreatePixelMaskLow( sMask, vLow, CRect=nil )

sMask is the name of the text file where the pixel mask will be saved.

vLow is the low threshold value.

CRect is the target rectangle; if nil, then the entire image is searched.

On success, this method returns true.

On failure, false is returned.

Remarks

This method produces a text file consisting of pixel coordinate pairs, one per line, in the form column, row. This format is described in the topic Pixel Mask File.

Example

The following script makes a pixel mask containing the coordinates of pixel values below -32000. The entire image is sampled because the CRect R is not specified:

I = new_image()	-- Create a CImage
I:Open( sPath )	-- Open the image from sPath.
I:CreatePixelMaskLow(sMaskFile,-32000)	-- create the pixel mask
I:delete()	-- delete the CImage from memory

Syntax

Remarks

Example

Related Topics