ImageDiff Class Reference

Image difference checker. More...

#include <fvutils/statistical/imagediff.h>

List of all members.


Public Member Functions

 ImageDiff (ScanlineModel *scanline_model)
 Constructor.
 ImageDiff ()
 Constructor.
 ~ImageDiff ()
 Destructor.
void setBufferA (unsigned char *yuv422planar_buffer, unsigned int width, unsigned int height)
 Set first buffer.
void setBufferB (unsigned char *yuv422planar_buffer, unsigned int width, unsigned int height)
 Set second buffer.
bool different ()
 Check if images are different.
unsigned int numDifferingPixels ()
 Number of differing pixels.

Detailed Description

Image difference checker.

Author:
Tim Niemueller

Definition at line 30 of file imagediff.h.

Constructor & Destructor Documentation

ImageDiff::ImageDiff ( ScanlineModel *  scanline_model  ) 

Constructor.

Parameters:
scanline_model scanlinemodel to use, if null all pixels are compared.

Definition at line 38 of file imagediff.cpp.

ImageDiff::ImageDiff (  ) 

Constructor.

Use this constructor to compare all pixels.

Definition at line 47 of file imagediff.cpp.

ImageDiff::~ImageDiff (  ) 

Destructor.

Definition at line 54 of file imagediff.cpp.

Member Function Documentation

bool ImageDiff::different (  ) 

Check if images are different.

This method will compare the two images. If any pixel marked by the scanline or any pixel at all if no scanline model is given differ the images are considered to be different. The same applies if any buffer is unset or the widths or heights are not the same.

Returns:
true if images are different, false otherwise

Definition at line 97 of file imagediff.cpp.

References ScanlineModel::finished(), and ScanlineModel::reset().

Referenced by FilterGeodesicErosion::apply(), and FilterGeodesicDilation::apply().

unsigned int ImageDiff::numDifferingPixels (  ) 

Number of differing pixels.

Executes the same routine as different(). But instead of just saying that the images are different will tell how many pixels differ.

Returns:
number of different pixels

Definition at line 147 of file imagediff.cpp.

References ScanlineModel::finished(), and ScanlineModel::reset().

void ImageDiff::setBufferA ( unsigned char *  yuv422planar_buffer,
unsigned int  width,
unsigned int  height 
)

Set first buffer.

Parameters:
yuv422planar_buffer buffer
width image width in pixels
height image height in pixels

Definition at line 65 of file imagediff.cpp.

Referenced by FilterGeodesicErosion::apply(), and FilterGeodesicDilation::apply().

void ImageDiff::setBufferB ( unsigned char *  yuv422planar_buffer,
unsigned int  width,
unsigned int  height 
)

Set second buffer.

Parameters:
yuv422planar_buffer buffer
width image width in pixels
height image height in pixels

Definition at line 80 of file imagediff.cpp.

Referenced by FilterGeodesicErosion::apply(), and FilterGeodesicDilation::apply().

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