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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 2872 of file processor.h.


Member Function Documentation

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

Implements EMAN::AreaProcessor.

Definition at line 1707 of file processor.cpp.

01708 {
01709         if (nz == 1) {
01710                 memset(kernel, 0, areasize * areasize);
01711                 kernel[1] = -0.25f;
01712                 kernel[3] = -0.25f;
01713                 kernel[5] = -0.25f;
01714                 kernel[7] = -0.25f;
01715                 kernel[4] = 1;
01716         }
01717         else {
01718                 memset(kernel, 0, (size_t)areasize * areasize * areasize);
01719                 kernel[4] = -1.0f / 6.0f;
01720                 kernel[10] = -1.0f / 6.0f;
01721                 kernel[12] = -1.0f / 6.0f;
01722                 kernel[14] = -1.0f / 6.0f;
01723                 kernel[16] = -1.0f / 6.0f;
01724                 kernel[22] = -1.0f / 6.0f;
01725                 kernel[13] = 1;
01726         }
01727 }

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 2884 of file processor.h.

02885                 {
02886                         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).";
02887                 }

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 2875 of file processor.h.

02876                 {
02877                         return NAME;
02878                 }

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

Definition at line 2879 of file processor.h.

02880                 {
02881                         return new LaplacianProcessor();
02882                 }


Member Data Documentation

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

Definition at line 120 of file processor.cpp.


The documentation for this class was generated from the following files:
Generated on Tue Jul 12 13:52:05 2011 for EMAN2 by  doxygen 1.3.9.1