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claraty::Gamma_Op

claraty::Gamma_Op Class Reference

#include <gamma_op.h>

List of all members.

Public Member Functions

 Gamma_Op ()
template<class TS, class TD>
void gamma_correct (Image< TS > &src_image, Image< TD > &dest_image, double gamma)

Detailed Description

An operation to apply gamma correction to an Image with the specified gamma value.

Definition at line 39 of file gamma_op.h.

Constructor & Destructor Documentation

claraty::Gamma_Op::Gamma_Op (  )  [inline]

Creates a rescaling operation that rescales an Image to values between min and max (if a value is not specified, zero is used).

Definition at line 48 of file gamma_op.h.

00048 {};

Member Function Documentation

template<class TS, class TD>
void claraty::Gamma_Op::gamma_correct ( Image< TS > &  src_image,
Image< TD > &  dest_image,
double  gamma 
)

Applies the gamma correction value on the source image pixels and writes them to the dest image

Parameters:
src_image the image to be apply gamma to
dest_image the image to be save the gamma corrected image
gamma the gamma correction value std::cout << "max_pix_val_src: " << max_pix_val_src << std::endl; std::cout << "max_pix_val_dest: " << max_pix_val_dest << std::endl;

Definition at line 65 of file gamma_op.h.

References claraty::Image< T >::get_height(), claraty::Image< T >::get_width(), and claraty::N_2D_Array< T >::resize().

00065                                                                                      {
00066         
00067 //   std::cout << "sizeof(TS): " << sizeof(TS) << std::endl;
00068 //   std::cout << "sizeof(TD): " << sizeof(TD) << std::endl;
00069 
00070   // get the size of source and dest images in bits
00071   unsigned int size_of_src = sizeof(TS) * 8;
00072   unsigned int size_of_dest = sizeof(TD) * 8;  
00073   // get the max range value of the source and dest image
00074   double max_pix_val_src = pow((double)2,(double)size_of_src);
00075   double max_pix_val_dest = pow((double)2,(double)size_of_dest);
00076 
00077 //   std::cout << "max_pix_val_src: " << max_pix_val_src << std::endl;
00078 //   std::cout << "max_pix_val_dest: " << max_pix_val_dest << std::endl;
00079 
00080   dest_image.resize(src_image.get_height(), src_image.get_width());
00081 
00082   for(int r=0; r<src_image.get_height(); r++) {
00083     for(int c=0; c<src_image.get_width(); c++) {
00084       dest_image(r,c) = (TD) (max_pix_val_dest * pow((double)(src_image(r,c)/max_pix_val_src), (double)(1/gamma)));
00085     }
00086   }
00087   
00088 }

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