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EMAN::ClampingProcessor Class Reference

f(x) = maxval if f(x) > maxval; f(x) = minval if f(x) < minval More...

#include <processor.h>

Inheritance diagram for EMAN::ClampingProcessor:

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List of all members.

Public Member Functions

 ClampingProcessor ()
string get_name () const
 Get the processor's name.
void process_inplace (EMData *image)
 To process an image in-place.
TypeDict get_param_types () const
 Get processor parameter information in a dictionary.
string get_desc () const
 Get the descrition of this specific processor.

Static Public Member Functions

static ProcessorNEW ()

Static Public Attributes

static const string NAME = "threshold.clampminmax"

Protected Attributes

float default_max
float default_min

Detailed Description

f(x) = maxval if f(x) > maxval; f(x) = minval if f(x) < minval

Parameters:
minval the minimum value to clamp to
maxval the maximum value to clamp to Replace outlying pixels values with the mean pixel value instead

Definition at line 1659 of file processor.h.


Constructor & Destructor Documentation

EMAN::ClampingProcessor::ClampingProcessor  )  [inline]
 

Definition at line 1662 of file processor.h.

Referenced by NEW().

01662 : default_max(1.0), default_min(0.0) {}


Member Function Documentation

string EMAN::ClampingProcessor::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.

Implements EMAN::Processor.

Reimplemented in EMAN::NSigmaClampingProcessor.

Definition at line 1684 of file processor.h.

01685                 {
01686                         return "This function clamps the min and max vals in the image at minval and maxval, respectively. In a sense this a bi-truncation of the data.";
01687                 }

string EMAN::ClampingProcessor::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.

Reimplemented in EMAN::NSigmaClampingProcessor.

Definition at line 1664 of file processor.h.

References NAME.

01665                 {
01666                         return NAME;
01667                 }

TypeDict EMAN::ClampingProcessor::get_param_types  )  const [inline, virtual]
 

Get processor parameter information in a dictionary.

Each parameter has one record in the dictionary. Each record contains its name, data-type, and description.

Returns:
A dictionary containing the parameter info.

Reimplemented from EMAN::Processor.

Reimplemented in EMAN::NSigmaClampingProcessor.

Definition at line 1675 of file processor.h.

References EMAN::EMObject::BOOL, EMAN::EMObject::FLOAT, and EMAN::TypeDict::put().

01676                 {
01677                         TypeDict d;
01678                         d.put("minval", EMObject::FLOAT, "The pixel values that bounds the smallest pixel value in the output image" );
01679                         d.put("maxval", EMObject::FLOAT, "The pixel values that bounds the largest pixel value in the output image" );
01680                         d.put("tomean", EMObject::BOOL, "Replace outlying pixels values with the mean pixel value instead" );
01681                         return d;
01682                 }

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

Reimplemented in EMAN::NSigmaClampingProcessor.

Definition at line 1668 of file processor.h.

References ClampingProcessor().

01669                 {
01670                         return new ClampingProcessor();
01671                 }

void ClampingProcessor::process_inplace EMData image  )  [virtual]
 

To process an image in-place.

For those processors which can only be processed out-of-place, override this function to just print out some error message to remind user call the out-of-place version.

Parameters:
image The image to be processed.

Implements EMAN::Processor.

Reimplemented in EMAN::NSigmaClampingProcessor.

Definition at line 8647 of file processor.cpp.

References default_max, default_min, EMAN::EMData::get_attr(), EMAN::EMData::get_data(), EMAN::EMData::get_size(), ImageFormatException, InvalidParameterException, EMAN::EMData::is_complex(), max, min, EMAN::Processor::params, EMAN::Dict::set_default(), and EMAN::EMData::update().

08648 {
08649 
08650         if ( image->is_complex() ) throw ImageFormatException("Error: clamping processor does not work on complex images");
08651 
08652         float min = params.set_default("minval",default_min);
08653         float max = params.set_default("maxval",default_max);
08654         bool tomean = params.set_default("tomean",false);
08655         float new_min_vals = min;
08656         float new_max_vals = max;
08657         if (tomean){
08658 
08659                 new_min_vals = image->get_attr("mean");
08660                 new_max_vals = image->get_attr("mean");
08661         }
08662 
08663         // Okay, throwing such an error is probably overkill - but atleast the user will get a loud message
08664         // saying what went wrong.
08665         if ( max < min ) throw InvalidParameterException("Error: minval was greater than maxval, aborting");
08666 
08667         size_t size = image->get_size();
08668         for(size_t i = 0; i < size; ++i )
08669         {
08670                 float * data = &image->get_data()[i];
08671                 if ( *data < min ) *data = new_min_vals;
08672                 else if ( *data > max ) *data = new_max_vals;
08673         }
08674         image->update();
08675 }


Member Data Documentation

float EMAN::ClampingProcessor::default_max [protected]
 

Definition at line 1692 of file processor.h.

Referenced by process_inplace().

float EMAN::ClampingProcessor::default_min [protected]
 

Definition at line 1692 of file processor.h.

Referenced by process_inplace().

const string ClampingProcessor::NAME = "threshold.clampminmax" [static]
 

Reimplemented in EMAN::NSigmaClampingProcessor.

Definition at line 1689 of file processor.h.

Referenced by get_name().


The documentation for this class was generated from the following files:
Generated on Tue May 25 17:37:01 2010 for EMAN2 by  doxygen 1.4.4