ImFusion C++ SDK 4.5.0
ImFusion::BilateralFilterAlgorithm Class Reference

#include <ImFusion/GL/BilateralFilterAlgorithm.h>

Algorithm for edge-preserving image smoothening using the Bilateral filter. More...

Inheritance diagram for ImFusion::BilateralFilterAlgorithm:

Detailed Description

Algorithm for edge-preserving image smoothening using the Bilateral filter.

Guide for general algorithm can be found in Szeliski's Computer Vision or at http://people.csail.mit.edu/sparis/bf_course/

Public Types

enum  ComputationMethod { CPU , OpenGL , OpenCL , NrMethods }
 Specify how to perform computation.
enum  AdaptiveMode { None , Linear , Exponential }
 Selects function on how to compute adaptive intensity weights in shader.
Public Types inherited from ImFusion::Algorithm
enum  Status {
  Unknown = -1 , Success = 0 , Error = 1 , InvalidInput ,
  IncompleteInput , OutOfMemoryHost , OutOfMemoryGPU , UnsupportedGPU ,
  UnknownAction , AbortedByUser , User = 1000
}
 Status codes. More...

Public Member Functions

 BilateralFilterAlgorithm (SharedImageSet &imgIn, SharedImageSet *imgGuide)
 Creates glPrograms and output and sets defaults.
 ~BilateralFilterAlgorithm () override
 Destroy glPrograms and output.
void setParameters (double sigmaPosition, double sigmaIntensity, int computationMethod, bool inPlace, int adaptive=None)
 Set the parameters for the bilateral filter.
void setAdaptiveParameters (double offset, double incline)
 Set global parameters for adaptive computation.
bool setAdaptiveParameters (const std::vector< double > &offsets, const std::vector< double > &inclines)
 Set image-specific parameters for adaptive computation.
void setInPlace (bool inplace)
 Set whether the result should be computed in place.
void configure (const Properties *p) override
 Set one or multiple properties.
void configuration (Properties *p) const override
 Retrieve the properties of this object.
void compute () override
 Compute the result.
OwningDataList takeOutput () override
 If the algorithm creates new image data, it has to be transferred here.
SharedImageSetoutput ()
 Access the output SIS.
Public Member Functions inherited from ImFusion::Algorithm
 Algorithm ()
 Default constructor will registers a single "compute" action that calls compute() and returns status().
virtual void setProgress (Progress *progress)
 Sets a Progress interface the algorithm can use to notify observers about its computing progress.
Progressprogress () const
 Returns the progress interface if set.
virtual int status () const
 Indicates the status of the last call to compute().
virtual bool survivesDataDeletion (const Data *) const
 Indicates whether the algorithm can handle (partial) deletion of the specified data, by default this checks whether the data is in the input list.
const FactoryInfofactoryInfo () const
 Returns the record describing how this Algorithm was instantiated by the AlgorithmFactory.
void setFactoryInfo (const FactoryInfo &value)
 Sets the record describing how this Algorithm was instantiated by the AlgorithmFactory.
Status runAction (const std::string &id)
 Run the action with name id if it exists.
const std::vector< Action > & actions ()
 Get a mapping from Action id to Action as registered in this algorithm.
Public Member Functions inherited from ImFusion::Configurable
virtual void configureDefaults ()
 Retrieve the properties of this object, replaces values with their defaults and sets it again.
void registerParameter (ParameterBase *param)
 Register the given Parameter or SubProperty, so that it will be configured during configure()/configuration().
void unregisterParameter (const ParameterBase *param)
 Remove the given Parameter or SubProperty from the list of registered parameters.
 Configurable (const Configurable &rhs)
 Configurable (Configurable &&rhs) noexcept
Configurable & operator= (const Configurable &)
Configurable & operator= (Configurable &&) noexcept

Static Public Member Functions

static bool createCompatible (const DataList &data, Algorithm **a)
 If data is compatible with algorithm return true. If a is not zero, create algorithm with input data.
Static Public Member Functions inherited from ImFusion::Algorithm
static bool createCompatible (const DataList &data, Algorithm **a=nullptr)
 Factory function to check algorithm compatibility with input data and optionally instantiate it.

Protected Attributes

SharedImageSetm_img
 Input, to be filtered.
SharedImageSetm_guide
 optional guide
std::unique_ptr< SharedImageSetm_output
 Output.
std::unique_ptr< TypedImage< float > > m_inImage
 The currently processed image.
GL::ImageProgramm_glProgram
 Program for filtering with OpenGL.
GlImagem_spatialGpuKernel
 Precomputed spatial kernel on the GPU.
std::vector< float > m_spatialCpuKernel
 Precomputed spatial kernel in memory (optional in GPU mode).
std::vector< double > m_offsets
 Offset coefficients for computing adaptive intensity weights in shader.
std::vector< double > m_inclines
 Incline coefficients.
double m_sigmaPosition
 Defines width of spatial Gaussian [mm].
double m_sigmaIntensity
 Defines width of intensity Gaussian.
double m_kernelRadiusScaling
 Defines how to scale the spatial kernel radius with respect to sigmaPosition.
bool m_inPlace
 True: replace input image with filtered image.
int m_adaptiveMode
 Apply adaptive computation of sigmaIntensity in shader if != 0.
double m_adaptiveIncline
 Defines global incline of linear sigmaSq-vs-mean relation.
double m_adaptiveOffset
 Defines global y-offset of linear sigmaSq-vs-mean relation.
bool m_precomputeSpatialKernel
 True: precompute spatial kernel on CPU.
int m_computationMethod
 Defines method/device to compute algorithm.
Protected Attributes inherited from ImFusion::Algorithm
std::string m_name
 Algorithm name.
Progressm_progress = nullptr
 Non-owing pointer to a progress interface. May be a nullptr.
FactoryInfo m_factoryInfo = {}
 Record describing how this algorithm was instantiated by the AlgorithmFactory.
int m_status = Status::Unknown
 Algorithm status after last call to compute().
std::vector< Actionm_actions
 Map of key given by the id of the action, of the available actions of this algorithm.
Protected Attributes inherited from ImFusion::Configurable
std::vector< Paramm_params
 List of all registered Parameter and SubProperty instances.

Parameters of ROI for intensity sigma computation

int m_roiCornerX
 top front left corner coordinate of square/cubic ROI
int m_roiCornerY
int m_roiCornerZ
 Zero for single image.
int m_roiWidth
 Width of ROI. If zero, m_sigmaIntensity will be used.
int m_roiHeight
 Height of ROI. Set equal to width if zero.
int m_roiDepth
 Depth of ROI. Set equal to width if zero and if the imageset contains multiple images.

OpenCL-specific members

ClEnvironmentm_env
bool m_ownEnv
ClProgramm_clProgram
 ClProgram holding two kernels for different computation methods.
ClKernelm_clKernel
 ClKernel used for computation.
ClSampler * m_clSampler
 ClSampler instance for ClImage::IMAGE types. Only required for global computation method.
bool m_clUseLocalMem
 True: perform caching to local memory before filtering. False: use global memory only.
unsigned int m_gws [3]
 Global number of workitems.
unsigned int m_lws [3]
 Local workgroup size.

Additional Inherited Members

Public Attributes inherited from ImFusion::Algorithm
Signal signalOutputChanged
 Signal should be emitted by Algorithms when their output/result has changed.
Signal signalParametersChanged
 Signal should be emitted by Algorithms when their parameter configuration has changed.
Public Attributes inherited from ImFusion::Configurable
Signal signalParametersChanged
 Emitted whenever one of the registered Parameters' or SubPropertys' signalValueChanged signal was emitted.
Protected Member Functions inherited from ImFusion::Algorithm
void loadDefaults ()
void registerAction (const std::string &id, const std::string &guiName, const std::function< Algorithm::Status(void)> &action)
 Register an action to be run via runAction.
template<typename D>
void registerAction (const std::string &id, const std::string &guiName, Algorithm::Status(D::*action)(void))
 Template version of runAction that can be used with a pointer to a member function.
void registerAction (const Action &action)
 Register an action.

Member Function Documentation

◆ setParameters()

void ImFusion::BilateralFilterAlgorithm::setParameters ( double sigmaPosition,
double sigmaIntensity,
int computationMethod,
bool inPlace,
int adaptive = None )

Set the parameters for the bilateral filter.

Note
See the documentation of GlBilateralFilter for more information on how to set parameters.

◆ setAdaptiveParameters()

bool ImFusion::BilateralFilterAlgorithm::setAdaptiveParameters ( const std::vector< double > & offsets,
const std::vector< double > & inclines )

Set image-specific parameters for adaptive computation.

Returns
True on success, i.e. vector sizes match the input image set size.

◆ configure()

void ImFusion::BilateralFilterAlgorithm::configure ( const Properties * p)
overridevirtual

Set one or multiple properties.

Reimplemented from ImFusion::Configurable.

◆ configuration()

void ImFusion::BilateralFilterAlgorithm::configuration ( Properties * p) const
overridevirtual

Retrieve the properties of this object.

Reimplemented from ImFusion::Configurable.

◆ compute()

void ImFusion::BilateralFilterAlgorithm::compute ( )
overridevirtual

Compute the result.

Implements ImFusion::Algorithm.

◆ takeOutput()

OwningDataList ImFusion::BilateralFilterAlgorithm::takeOutput ( )
overridevirtual

If the algorithm creates new image data, it has to be transferred here.

Reimplemented from ImFusion::Algorithm.

Member Data Documentation

◆ m_clKernel

ClKernel* ImFusion::BilateralFilterAlgorithm::m_clKernel
protected

ClKernel used for computation.

'computeFilter' uses only global GPU memory, 'computeFilterUsingLocalMem' caches an image patch into local workgroup memory before filtering


The documentation for this class was generated from the following file:
  • ImFusion/GL/BilateralFilterAlgorithm.h
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