Histogram

measure of intensity histogram for shape More...

Classes
class	ipsdk::imaproc::shape::analysis::HistogramMsr
	Measurement object for measure Histogram. More...
class	ipsdk::imaproc::shape::analysis::HistogramMsrInfo
	Information object for measure Histogram. More...
class	ipsdk::imaproc::shape::analysis::HistogramMsrParams
	Parameter object for measure Histogram. More...
class	ipsdk::imaproc::shape::analysis::HistogramMsrResults
	Measurement results object for measure Histogram. More...
IPSDKIPLSHAPEANALYSIS_API HistogramMsrParamsPtr	ipsdk::imaproc::shape::analysis::createHistogramMsrParams (const HistogramMsrParams &histoMsrParams)
	function allowing to create a new parameter object for Histogram measure
IPSDKIPLSHAPEANALYSIS_API HistogramMsrParamsPtr	ipsdk::imaproc::shape::analysis::createHistogramMsrParamsMinMaxShapeBinWidth (const ipReal64 binWidth)
	function allowing to create a new parameter object for Histogram measure
IPSDKIPLSHAPEANALYSIS_API HistogramMsrParamsPtr	ipsdk::imaproc::shape::analysis::createHistogramMsrParamsMinMaxImgBinWidth (const ipReal64 binWidth)
	function allowing to create a new parameter object for Histogram measure
IPSDKIPLSHAPEANALYSIS_API HistogramMsrParamsPtr	ipsdk::imaproc::shape::analysis::createHistogramMsrParamsBinWidth (const ipReal64 binWidth, const ipReal64 histoMin, const ipReal64 histoMax)
	function allowing to create a new parameter object for Histogram measure
IPSDKIPLSHAPEANALYSIS_API HistogramMsrParamsPtr	ipsdk::imaproc::shape::analysis::createHistogramMsrParamsMinMaxShapeNbClasses (const ipUInt32 &nbClasses)
	function allowing to create a new parameter object for Histogram measure
IPSDKIPLSHAPEANALYSIS_API HistogramMsrParamsPtr	ipsdk::imaproc::shape::analysis::createHistogramMsrParamsMinMaxImgNbClasses (const ipUInt32 &nbClasses)
	function allowing to create a new parameter object for Histogram measure
IPSDKIPLSHAPEANALYSIS_API HistogramMsrParamsPtr	ipsdk::imaproc::shape::analysis::createHistogramMsrParamsNbClasses (const ipUInt32 nbClasses, const ipReal64 histoMin, const ipReal64 histoMax)
	function allowing to create a new parameter object for Histogram measure

Detailed Description

measure of intensity histogram for shape

Histogram measure computes the histogram of intensities for the shape, given the following parameters:

• histogram minimum and maximum; there are 3 ways to define them:
  • the user specifies minimum and maximum of his choice
  • they are initialized with the minimal and maximal intensities of the image
  • they are initialized with the minimal and maximal intensities of the shape
• the bin width, or the number of classes of the histogram

Here is an example of histogram measurement:

Author

H. Delestre

Date

2015/07/08

Copyright

2015 Reactiv'IP, all right reserved.

measure of intensity histogram for shape

Measure synthesis :

Measure Type	Measure Unit Type	Parameter Type	Result Type	Shape Requirements
Intensity	None	HistogramMsrParams	Custom	Row Intersections

See Shape measurement for additional information on these pictograms

Measure Type :

This is an intensity measure

• it use image data to compute a result
• it optionally can use dependencies to other measures to compute a result (see Measure Dependencies section)

This measure can be used in 2d and 3d case

Measure Unit Type:

Measure Histogram is not associated to any unit [ipsdk::shape::analysis::eMsrUnitFormat::eMUF_NoUnit]

Measure Parameter Type :

Measure Histogram is associated to HistogramMsrParams parameters

Measure Result Type :

Measure Histogram is associated to HistogramMsrResults results

Measure Shape Requirements :

Measure Histogram requires row intersections from shape data

Measure Dependencies :

Measure Histogram has no dependency

Note

See Shape Analysis 2d for more information on general shape 2d analysis and measurement usage.

See Shape Analysis 3d for more information on general shape 3d analysis and measurement usage.

Example of Python code :

Generic example in 2d case :

import PyIPSDK
import PyIPSDK.IPSDKIPLShapeAnalysis as shapeanalysis

    # Create the infoset
    inMeasureInfoSet2d = PyIPSDK.createMeasureInfoSet2d()
    PyIPSDK.createMeasureInfo(inMeasureInfoSet2d, "HistogramMsr")
    
    #Perform the analysis
    outMeasureSet = shapeanalysis.labelAnalysis2d(inGreyImg, inLabelImg2d, inMeasureInfoSet2d)
    
    # save results to csv format
    PyIPSDK.saveCsvMeasureFile(os.path.join(tmpPath,  "shape_analysis_results.csv"), outMeasureSet)
    
    # retrieve measure results
    outMsr = outMeasureSet.getMeasure("HistogramMsr")
    
    # retrieve measure values
    outMsrValues = outMsr.getMeasureResult().getColl(0)
    print("First label measurement equal " + str(outMsrValues[1]))

Generic example in 3d case :

import PyIPSDK
import PyIPSDK.IPSDKIPLShapeAnalysis as shapeanalysis

    # Create the infoset
    inMeasureInfoSet3d = PyIPSDK.createMeasureInfoSet3d()
    PyIPSDK.createMeasureInfo(inMeasureInfoSet3d, "HistogramMsr")
    
    #Perform the analysis
    outMeasureSet = shapeanalysis.labelAnalysis3d(inGreyImg, inLabelImg, inMeasureInfoSet3d)
    
    # save results to csv format
    PyIPSDK.saveCsvMeasureFile(os.path.join(tmpPath,  "shape_analysis_results.csv"), outMeasureSet)
    
    # retrieve measure results
    outMsr = outMeasureSet.getMeasure("HistogramMsr")
    
    # retrieve measure values
    outMsrValues = outMsr.getMeasureResult().getColl(0)
    print("First label measurement equal " + str(outMsrValues[1]))

Example of C++ code :

Example informations

Associated library

IPSDKIPLShapeAnalysis

Code Example

    // opening grey level input image
    ImagePtr pInGreyImg2d = loadTiffImageFile(inputGreyImgPath);

    // read entity shape 2d collection used for processing
    Shape2dCollPtr pShape2dColl = boost::make_shared<Shape2dColl>();
    readFromXmlFile(inputShape2dCollPath, *pShape2dColl);

    // define a measure info set
    MeasureInfoSetPtr pMeasureInfoSet = MeasureInfoSet::create2dInstance();

    HistogramMsrParamsPtr pHistoMsrParams;
    switch(minMaxDef.value()) {
    case eMinMaxDefinition::eMMD_ImgMinMax:
        pHistoMsrParams = createHistogramMsrParamsMinMaxImgBinWidth(1.0);
        break;
    case eMinMaxDefinition::eMMD_ShapeMinMax:
        pHistoMsrParams = createHistogramMsrParamsMinMaxShapeBinWidth(1.0);
        break;
    case eMinMaxDefinition::eMMD_UserDefinedMinMax:
        pHistoMsrParams = createHistogramMsrParamsBinWidth(1.0, fMin.get(), fMax.get());

    }
    createMeasureInfo(pMeasureInfoSet, "HistogramMsr", pHistoMsrParams);

    // compute measure on shape 2d collection
    MeasureSetPtr pOutMeasureSet = shapeAnalysis2d(pInGreyImg2d, pShape2dColl, pMeasureInfoSet);

    // retrieve associated results
    const MeasureConstPtr& pHistogramOutMsr = pOutMeasureSet->getMeasure("HistogramMsr");
    const HistogramMsrResults& outResults = static_cast<const HistogramMsrResults&>(pHistogramOutMsr->getMeasureResult());