OBBHeight

Measure allowing to get the height of the minimal oriented bounding box of a shape. More...

Classes
class	ipsdk::imaproc::shape::analysis::OBBHeightMsr
	Measurement object for measure OBBHeight. More...
class	ipsdk::imaproc::shape::analysis::OBBHeightMsrInfo
	Information object for measure OBBHeight. More...
class	ipsdk::imaproc::shape::analysis::OBBHeightMsrParams
	Parameter object for measure OBBHeight. More...

Functions
IPSDKIPLSHAPEANALYSIS_API OBBHeightMsrParamsPtr	ipsdk::imaproc::shape::analysis::createOBBHeightMsrParams (ipUInt32 nbOrientations=36)
	function allowing to create a new parameter object for OBBHeight measure

Detailed Description

Measure allowing to get the height of the minimal oriented bounding box of a shape.

This measure computes the height of the oriented minimal bounding box for each shape. The height is lower than the shape length and width.

Note that without any rotation, the height is the shape size along the z-axis.

Here is an example of height oriented bounding box measurement :

See OrientedBoundingBox3d for more details about the oriented bounding box calculation.

Author

H. Delestre

Date

2016/05/09

Copyright

2016 Reactiv'IP, all right reserved.

Measure allowing to get the height of the minimal oriented bounding box of a shape

Measure synthesis :

Measure Type	Measure Unit Type	Parameter Type	Result Type	Shape Requirements
Generic	Length	OBBHeightMsrParams	Value (ipsdk::ipReal64)	Both

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 OBBHeight is associated to a length measurement unit [ipsdk::shape::analysis::eMsrUnitFormat::eMUF_LengthUnit]

Measure Parameter Type :

Measure OBBHeight is associated to OBBHeightMsrParams parameters

Measure Result Type :

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

Measure Shape Requirements :

Measure OBBHeight requires row intersections and boundary approximation from shape data

Measure Dependencies :

Measure OBBHeight depends on following measures :

Measure Mode	Measure Name	Measure Type	Measure Parameters
eMVP_3d	OrientedBoundingBox	OrientedBoundingBox3d	createOrientedBoundingBox3dMsrParams(_pMsrParams->getValue<OBBHeightMsrParams::NbOrientations>())

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, "OBBHeightMsr")
    
    #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("OBBHeightMsr")
    
    # 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 pInGreyImg3d = loadTiffImageFile(inputGreyImgPath, eTiffDirectoryMode::eTDM_Volume);

    // read entity shape 3d collection used for processing
    Shape3dCollPtr pShape3dColl = boost::make_shared<Shape3dColl>();
    readFromBinaryFile(inputShape3dCollPath, *pShape3dColl);

    // define a measure info set
    MeasureInfoSetPtr pMeasureInfoSet = MeasureInfoSet::create3dInstance();
    createMeasureInfo(pMeasureInfoSet, "OBBHeightMsr", createOBBHeightMsrParams(1));
    
    // compute measure on shape 3d collection
    MeasureSetPtr pOutMeasureSet = shapeAnalysis3d(pInGreyImg3d, pShape3dColl, pMeasureInfoSet);

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