MinFeretOrientation2d

Returns the orientation of the minimum 2D Feret diameter. More...

Classes
class	ipsdk::imaproc::shape::analysis::MinFeretOrientation2dMsr
	Measurement object for measure MinFeretOrientation2d. More...
class	ipsdk::imaproc::shape::analysis::MinFeretOrientation2dMsrInfo
	Information object for measure MinFeretOrientation2d. More...
class	ipsdk::imaproc::shape::analysis::MinFeretOrientation2dMsrParams
	Parameter object for measure MinFeretOrientation2d. More...

Detailed Description

Returns the orientation of the minimum 2D Feret diameter.

This measure returns the inximum Feret 2D diameter orientation.

Here is an example of orientation measurement :

Author

R. Abbal

Date

2021/05/10

Copyright

2021 ReactivIP, all right reserved.

Returns the orientation of the minimum 2D Feret diameter

Measure synthesis :

Measure Type	Measure Unit Type	Parameter Type	Result Type	Shape Requirements
Generic	Angle	MinFeretOrientation2dMsrParams	Value (ipsdk::ipReal64)	Boundary Approximation

See Shape measurement for additional information on these pictograms

Measure Type :

This is a generic measure

• it does not directly use shape or image data
• it can use dependencies to other measures to compute a result (see Measure Dependencies section)

This measure can only be used in 2d case

Measure Unit Type:

Measure MinFeretOrientation2d is associated to an angular (radians) measurement unit [ipsdk::shape::analysis::eMsrUnitFormat::eMUF_RadianUnit]

Measure Parameter Type :

Measure MinFeretOrientation2d is associated to MinFeretOrientation2dMsrParams parameters

Measure Result Type :

Measure MinFeretOrientation2d is associated to ipsdk::shape::analysis::ValueMeasureResult<ipsdk::ipReal64> results

Measure Shape Requirements :

Measure MinFeretOrientation2d requires boundary approximation from shape data

Measure Dependencies :

Measure MinFeretOrientation2d depends on following measures :

Measure Mode	Measure Name	Measure Type	Measure Parameters
eMVP_2d	ConvexHull2d	ConvexHull2d

Note

See Shape Analysis 2d for more information on general shape 2d 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, "MinFeretOrientation2dMsr")
    
    #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("MinFeretOrientation2dMsr")
    
    # 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

    // define a measure info set
    MeasureInfoSetPtr pMeasureInfoSet = MeasureInfoSet::create2dInstance();
    createMeasureInfo(pMeasureInfoSet, "MinFeretOrientation2dMsr");

    // compute measure on shape 3d collection
    MeasureSetPtr pOutMeasureSet = labelAnalysis2d(pLabelImg, pLabelImg, pMeasureInfoSet);

    // retrieve associated results
    const MeasureConstPtr& pMinFeretOrientation2dOutMsr = pOutMeasureSet->getMeasure("MinFeretOrientation2dMsr");
    const ipsdk::shape::analysis::ValueMeasureResult<ipsdk::ipReal64>& outResults = static_cast<const ipsdk::shape::analysis::ValueMeasureResult<ipsdk::ipReal64>&>(pMinFeretOrientation2dOutMsr->getMeasureResult());