mojave man page for mpsimageerode

MPSImageErode(3)					 MetalPerformanceShaders.framework					  MPSImageErode(3)

NAME
       MPSImageErode

SYNOPSIS
       #import <MPSImageMorphology.h>

       Inherits MPSImageDilate.

   Additional Inherited Members
Detailed Description
       The MPSImageErode filter finds the minimum pixel value in a rectangular region centered around each pixel in the source image. It is like
       the MPSImageAreaMin, except that the intensity at each position is calculated relative to a different value before determining which is the
       maximum pixel value, allowing for shaped, non-rectangular morphological probes.

       for each pixel in the filter window:
	   value =  pixel[filterY][filterX] + filter[filterY*filter_width+filterX]
	   if( value < bestValue ){
		result = value
		bestValue = value;
	   }

	A filter that contains all zeros is identical to a MPSImageAreaMin filter. The center filter element is assumed to be 0, to avoid causing
       a general lightening of the image.

       The definition of the filter for MPSImageErode is different from vImage. (MPSErode_filter_value = 1.0f-vImageErode_filter_value.) This
       allows MPSImageDilate and MPSImageErode to use the same filter, making open and close operators easier to write. The edgeMode property is
       assumed to always be MPSImageEdgeModeClamp for this filter.

Author
       Generated automatically by Doxygen for MetalPerformanceShaders.framework from the source code.

Version MetalPerformanceShaders-100				  Thu Feb 8 2018						  MPSImageErode(3)