reduce Class Reference

50% down-sample filter

#include <image_reduce.hpp>

Inheritance diagram for reduce:

Public Member Functions
	reduce (image *L)
	Apply a 2-by-2 box-filtered down-sampling to image L. The height and width of the result will be exactly half that of the input. Reduction is often preferable to linear or even cubic downsampling as all samples of the input are guaranteed to have equal influence on the output.
virtual double	get (int i, int j, int k) const
	Return the value of the sample at row i, column j, channel k.
virtual int	get_height () const
	Return the height of this image.
virtual int	get_width () const
	Return the height of this image.
virtual void	doc (std::ostream &out) const
	Produce a string documenting the function of this object.
Public Member Functions inherited from image
	image (image *L=0, image *R=0)
	Create a new image object with left child L and right child R. The parents of L and R are set to this.
virtual	~image ()
	Finalize this image object by deleting any children.
virtual int	get_depth () const
	Return the depth of this image.
image *	getL ()
	Return the left child.
image *	getR ()
	Return the right child.
image *	getP ()
	Return the parent.
virtual void	tweak (int a, int v)
	Tweak image parameter a, changing the value by a factor of v.
virtual void	process ()
	Process all samples of both children.

Additional Inherited Members
Protected Attributes inherited from image
image *	L
	Left child.
image *	R
	Right child.
image *	P
	Parent.

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The documentation for this class was generated from the following file:

• image_reduce.hpp