VTK
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Compares images for regression tests. More...
#include <vtkImageDifference.h>
Inherits vtkThreadedImageAlgorithm.
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typedef vtkThreadedImageAlgorithm | Superclass |
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virtual int | IsA (const char *type) |
vtkImageDifference * | NewInstance () const |
void | PrintSelf (ostream &os, vtkIndent indent) |
void | SetImageConnection (vtkAlgorithmOutput *output) |
void | SetImageData (vtkDataObject *image) |
vtkImageData * | GetImage () |
double | GetError (void) |
void | GetError (double *e) |
double | GetThresholdedError (void) |
void | GetThresholdedError (double *e) |
virtual void | SetThreshold (int) |
virtual int | GetThreshold () |
virtual void | SetAllowShift (int) |
virtual int | GetAllowShift () |
virtual void | AllowShiftOn () |
virtual void | AllowShiftOff () |
virtual void | SetAveraging (int) |
virtual int | GetAveraging () |
virtual void | AveragingOn () |
virtual void | AveragingOff () |
Static Public Member Functions | |
static vtkImageDifference * | New () |
static int | IsTypeOf (const char *type) |
static vtkImageDifference * | SafeDownCast (vtkObjectBase *o) |
Protected Member Functions | |
virtual vtkObjectBase * | NewInstanceInternal () const |
vtkImageDifference () | |
~vtkImageDifference () | |
virtual int | RequestInformation (vtkInformation *, vtkInformationVector **, vtkInformationVector *) |
virtual int | RequestUpdateExtent (vtkInformation *, vtkInformationVector **, vtkInformationVector *) |
virtual void | ThreadedRequestData (vtkInformation *request, vtkInformationVector **inputVector, vtkInformationVector *outputVector, vtkImageData ***inData, vtkImageData **outData, int extent[6], int threadId) |
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double | ErrorPerThread [VTK_MAX_THREADS] |
double | ThresholdedErrorPerThread [VTK_MAX_THREADS] |
int | AllowShift |
int | Threshold |
int | Averaging |
Compares images for regression tests.
vtkImageDifference takes two rgb unsigned char images and compares them. It allows the images to be slightly different. If AllowShift is on, then each pixel can be shifted by one pixel. Threshold is the allowable error for each pixel.
This is not a symetric filter and the difference computed is not symetric when AllowShift is on. Specifically in that case a pixel in SetImage input will be compared to the matching pixel in the input as well as to the input's eight connected neighbors. BUT... the opposite is not true. So for example if a valid image (SetImage) has a single white pixel in it, it will not find a match in the input image if the input image is black (because none of the nine suspect pixels are white). In contrast, if there is a single white pixel in the input image and the valid image (SetImage) is all black it will match with no error because all it has to do is find black pixels and even though the input image has a white pixel, its neighbors are not white.
Definition at line 45 of file vtkImageDifference.h.
typedef vtkThreadedImageAlgorithm vtkImageDifference::Superclass |
Definition at line 49 of file vtkImageDifference.h.
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Definition at line 105 of file vtkImageDifference.h.
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vtkImageDifference* vtkImageDifference::NewInstance | ( | ) | const |
void vtkImageDifference::PrintSelf | ( | ostream & | os, |
vtkIndent | indent | ||
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Specify the Image to compare the input to.
Definition at line 54 of file vtkImageDifference.h.
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Specify the Image to compare the input to.
Definition at line 58 of file vtkImageDifference.h.
vtkImageData* vtkImageDifference::GetImage | ( | ) |
Specify the Image to compare the input to.
double vtkImageDifference::GetError | ( | void | ) |
Return the total error in comparing the two images.
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Return the total error in comparing the two images.
Definition at line 65 of file vtkImageDifference.h.
double vtkImageDifference::GetThresholdedError | ( | void | ) |
Return the total thresholded error in comparing the two images. The thresholded error is the error for a given pixel minus the threshold and clamped at a minimum of zero.
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Return the total thresholded error in comparing the two images. The thresholded error is the error for a given pixel minus the threshold and clamped at a minimum of zero.
Definition at line 73 of file vtkImageDifference.h.
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Specify a threshold tolerance for pixel differences.
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Specify a threshold tolerance for pixel differences.
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Specify whether the comparison will allow a shift of one pixel between the images. If set, then the minimum difference between input images will be used to determine the difference. Otherwise, the difference is computed directly between pixels of identical row/column values.
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Specify whether the comparison will allow a shift of one pixel between the images. If set, then the minimum difference between input images will be used to determine the difference. Otherwise, the difference is computed directly between pixels of identical row/column values.
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Specify whether the comparison will allow a shift of one pixel between the images. If set, then the minimum difference between input images will be used to determine the difference. Otherwise, the difference is computed directly between pixels of identical row/column values.
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Specify whether the comparison will allow a shift of one pixel between the images. If set, then the minimum difference between input images will be used to determine the difference. Otherwise, the difference is computed directly between pixels of identical row/column values.
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Specify whether the comparison will include comparison of averaged 3x3 data between the images. For graphics renderings you normally would leave this on. For imaging operations it should be off.
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Specify whether the comparison will include comparison of averaged 3x3 data between the images. For graphics renderings you normally would leave this on. For imaging operations it should be off.
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Specify whether the comparison will include comparison of averaged 3x3 data between the images. For graphics renderings you normally would leave this on. For imaging operations it should be off.
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Specify whether the comparison will include comparison of averaged 3x3 data between the images. For graphics renderings you normally would leave this on. For imaging operations it should be off.
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Definition at line 105 of file vtkImageDifference.h.
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Definition at line 108 of file vtkImageDifference.h.
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Definition at line 109 of file vtkImageDifference.h.
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Definition at line 110 of file vtkImageDifference.h.
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Definition at line 111 of file vtkImageDifference.h.