MaxFeretOrientationTheta3d

Returns the theta orientation (angle between the z axis and the in the x-y plan) of the maximum 3D Feret diameter. More...

Classes
class	ipsdk::imaproc::shape::analysis::MaxFeretOrientationTheta3dMsr
	Measurement object for measure MaxFeretOrientationTheta3d. More...
class	ipsdk::imaproc::shape::analysis::MaxFeretOrientationTheta3dMsrInfo
	Information object for measure MaxFeretOrientationTheta3d. More...
class	ipsdk::imaproc::shape::analysis::MaxFeretOrientationTheta3dMsrParams
	Parameter object for measure MaxFeretOrientationTheta3d. More...

Detailed Description

Returns the theta orientation (angle between the z axis and the in the x-y plan) of the maximum 3D Feret diameter.

Considering a (phi-theta 3D angle representation), this measure returns the theta component of the maximum Feret 3D diameter orientation.

Here is an example of orientation measurement :

Author

R. Abbal

Date

2021/04/30

Copyright

2021 ReactivIP, all right reserved.

Returns the theta orientation (angle between the z axis and the in the x-y plan) of the maximum 3D Feret diameter

Measure synthesis :

Measure Type	Measure Unit Type	Parameter Type	Result Type	Shape Requirements
Generic	Angle	MaxFeretOrientationTheta3dMsrParams	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 3d case

Measure Unit Type:

Measure MaxFeretOrientationTheta3d is associated to an angular (radians) measurement unit [ipsdk::shape::analysis::eMsrUnitFormat::eMUF_RadianUnit]

Measure Parameter Type :

Measure MaxFeretOrientationTheta3d is associated to MaxFeretOrientationTheta3dMsrParams parameters

Measure Result Type :

Measure MaxFeretOrientationTheta3d is associated to ipsdk::shape::analysis::ValueMeasureResult<ipsdk::ipReal64> results

Measure Shape Requirements :

Measure MaxFeretOrientationTheta3d requires boundary approximation from shape data

Measure Dependencies :

Measure MaxFeretOrientationTheta3d depends on following measures :

Measure Mode	Measure Name	Measure Type	Measure Parameters
eMVP_3d	ConvexHull3d	ConvexHull3d

Note

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

Example of Python code :

Generic example in 3d case :

import PyIPSDK
import PyIPSDK.IPSDKIPLShapeAnalysis as shapeanalysis

    # Create the infoset
    inMeasureInfoSet3d = PyIPSDK.createMeasureInfoSet3d()
    PyIPSDK.createMeasureInfo(inMeasureInfoSet3d, "MaxFeretOrientationTheta3dMsr")
    
    #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("MaxFeretOrientationTheta3dMsr")
    
    # 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::create3dInstance();
    createMeasureInfo(pMeasureInfoSet, "MaxFeretOrientationTheta3dMsr");

    // compute measure
    MeasureSetPtr pOutMeasureSet = labelAnalysis3d(pLabelImg, pLabelImg, pMeasureInfoSet);

    // retrieve associated results
    const MeasureConstPtr& pMaxFeretOrientationTheta3dOutMsr = pOutMeasureSet->getMeasure("MaxFeretOrientationTheta3dMsr");
    const ipsdk::shape::analysis::ValueMeasureResult<ipsdk::ipReal64>& outResults = static_cast<const ipsdk::shape::analysis::ValueMeasureResult<ipsdk::ipReal64>&>(pMaxFeretOrientationTheta3dOutMsr->getMeasureResult());