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EMAN::LaplacianProcessor Class Reference

Discrete approximation to Laplacian. More...

#include <processor.h>

Inheritance diagram for EMAN::LaplacianProcessor:

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Collaboration diagram for EMAN::LaplacianProcessor:

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List of all members.

Public Member Functions

string get_name () const
 Get the processor's name.
string get_desc () const
 Get the descrition of this specific processor.

Static Public Member Functions

ProcessorNEW ()

Static Public Attributes

const string NAME = "math.laplacian"

Protected Member Functions

void create_kernel () const

Detailed Description

Discrete approximation to Laplacian.

Edge enchancement, but works poorly in the presence of noise. Laplacian processor (x -> d^2/dx^2 + d^2/dy^2 + d^2/dz^2).

Definition at line 2778 of file processor.h.


Member Function Documentation

void LaplacianProcessor::create_kernel  )  const [protected, virtual]
 

Implements EMAN::AreaProcessor.

Definition at line 1648 of file processor.cpp.

01649 {
01650         if (nz == 1) {
01651                 memset(kernel, 0, areasize * areasize);
01652                 kernel[1] = -0.25f;
01653                 kernel[3] = -0.25f;
01654                 kernel[5] = -0.25f;
01655                 kernel[7] = -0.25f;
01656                 kernel[4] = 1;
01657         }
01658         else {
01659                 memset(kernel, 0, (size_t)areasize * areasize * areasize);
01660                 kernel[4] = -1.0f / 6.0f;
01661                 kernel[10] = -1.0f / 6.0f;
01662                 kernel[12] = -1.0f / 6.0f;
01663                 kernel[14] = -1.0f / 6.0f;
01664                 kernel[16] = -1.0f / 6.0f;
01665                 kernel[22] = -1.0f / 6.0f;
01666                 kernel[13] = 1;
01667         }
01668 }

string EMAN::LaplacianProcessor::get_desc  )  const [inline, virtual]
 

Get the descrition of this specific processor.

This function must be overwritten by a subclass.

Returns:
The description of this processor.

Reimplemented from EMAN::AreaProcessor.

Definition at line 2790 of file processor.h.

02791                 {
02792                         return "Discrete approximation to Laplacian. Edge enchancement, but works poorly in the presence of noise. Laplacian processor (x -> d^2/dx^2 + d^2/dy^2 + d^2/dz^2).";
02793                 }

string EMAN::LaplacianProcessor::get_name  )  const [inline, virtual]
 

Get the processor's name.

Each processor is identified by a unique name.

Returns:
The processor's name.

Implements EMAN::Processor.

Definition at line 2781 of file processor.h.

02782                 {
02783                         return NAME;
02784                 }

Processor* EMAN::LaplacianProcessor::NEW  )  [inline, static]
 

Definition at line 2785 of file processor.h.

02786                 {
02787                         return new LaplacianProcessor();
02788                 }


Member Data Documentation

const string LaplacianProcessor::NAME = "math.laplacian" [static]
 

Definition at line 112 of file processor.cpp.


The documentation for this class was generated from the following files:
Generated on Thu Mar 10 23:00:32 2011 for EMAN2 by  doxygen 1.3.9.1