ossimOpenCVLaplaceFilter Class Reference

OpenCV Laplace Filter. More...

Public Member Functions
	ossimOpenCVLaplaceFilter (ossimObject *owner=NULL)
	ossimOpenCVLaplaceFilter (ossimImageSource *inputSource, int aperture_size=3)
	ossimOpenCVLaplaceFilter (ossimObject owner, ossimImageSource inputSource, int aperture_size=3)
ossimString	getShortName () const
ossimString	getLongName () const
virtual ossimRefPtr < ossimImageData >	getTile (const ossimIrect &tileRect, ossim_uint32 resLevel=0)
virtual void	initialize ()
virtual ossimScalarType	getOutputScalarType () const
ossim_uint32	getNumberOfOutputBands () const
virtual bool	saveState (ossimKeywordlist &kwl, const char *prefix=0) const
virtual bool	loadState (const ossimKeywordlist &kwl, const char *prefix=0)
Protected Member Functions
void	runUcharTransformation (ossimImageData *tile)
Protected Attributes
ossimRefPtr< ossimImageData >	theTile
	Output tile.
int	theApertureSize
	Size of the extended Laplace kernel, must be 1, 3, 5 or 7.

Detailed Description

OpenCV Laplace Filter.

Calculates the Laplacian of an image.

Parameters:

aperture_size

Aperture size (it has the same meaning as Sobel)

The function calculates the Laplacian of the source image by adding up the second x and y derivatives calculated using the Sobel operator:

$\texttt{dst}(x,y) = \frac{d^2 \texttt{src}}{dx^2} + \frac{d^2 \texttt{src}}{dy^2}$

Setting apertureSize = 1 gives the fastest variant that is equal to convolving the image with the following kernel:

$\left[ \begin{array}{ccc} 0 & 1 & 0 \\ 1 & -4 & 1 \\ 0 & 1 & 0 \\ \end{array} \right]$

Similar to the Sobel function, no scaling is done and the same combinations of input and output formats are supported.

bool ossimOpenCVLaplaceFilter::loadState	(	const ossimKeywordlist &	kwl,
		const char *	prefix = `0`
	)			`[virtual]`

Method to the load (recreate) the state of an object from a keyword list. Return true if ok or false on error.

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