Extract image 2d values

Doubles =	extractImg2dValues (inImg,inCoords2dColl)
Doubles =	extractImg2dValues (inImg,inCoords2dColl,inOptInterpolationPolicy)
Doubles =	extractImg2dValues (inImg,inCoords2dColl,inOptInterpolationPolicy,inOptImageValueExtractionMethod)

Detailed Description

extract values at specific coordinates from a 2d image

This algorithm allows to extract grey level values from an input 2d image.

If input image is a multi plane image (ie. 3d, sequence or color image), each plane is processed separatly.

Given a collection of input 2d coordinates , algorithm extracts an associated collection of grey level values from input image . User can specify an optional interpolation policy (see enumerate ipsdk::imaproc::attr::eInterpolationPolicy) used to extract values from image.

Example of Python code :

Example imports

import PyIPSDK
import PyIPSDK.IPSDKIPLUtility as util

Code Example

    # opening of input image
    inImg = PyIPSDK.loadTiffImageFile(inputImgPath)
    
    # create a coordinates collection
    inCoordsColl = PyIPSDK.createCoords2dColl()
    inCoordsColl.addCoords(100.3, 100.2)
    inCoordsColl.addCoords(200.4, 150.1)
    inCoordsColl.addCoords(300.7, 200.3)
    
    # retrieve associated grey values into image with default interpolation policy
    outGreyValues1 = util.extractImg2dValues(inImg, inCoordsColl)
    for i in range(0, len(inCoordsColl.coll)):
        print("Grey value at {" + str(inCoordsColl.coll[i].x) + ", " +
                                  str(inCoordsColl.coll[i].y) + "} = " +
                                  str(outGreyValues1.coll[i]))
                                  
    # retrieve associated grey values into image with cubic interpolation policy
    outGreyValues2 = util.extractImg2dValues(inImg, inCoordsColl, PyIPSDK.eInterpolationPolicy.eIP_Cubic)
    for i in range(0, len(inCoordsColl.coll)):
        print("Grey value at {" + str(inCoordsColl.coll[i].x) + ", " +
                                  str(inCoordsColl.coll[i].y) + "} = " +
                                  str(outGreyValues2.coll[i]))

Example of C++ code :

Example informations

Header file

#include <IPSDKIPL/IPSDKIPLUtility/Processor/ExtractImg2dValues/ExtractImg2dValues.h>

Code Example

    // Load the input image
    ImagePtr pInImg = loadTiffImageFile(inImgFilePath);

    // definition of a coordinates collection
    Coords2dCollPtr pInCoordsColl(boost::make_shared<Coords2dColl>());
    pInCoordsColl->addCoords(100.3, 100.2);
    pInCoordsColl->addCoords(200.4, 150.1);
    pInCoordsColl->addCoords(300.7, 200.3);

    // retrieve associated grey values into image with default interpolation policy
    DoublesPtr outGreyValues1 = extractImg2dValues(pInImg, pInCoordsColl);

    // retrieve associated grey values into image with cubic interpolation policy
    DoublesPtr outGreyValues2 = extractImg2dValues(pInImg, pInCoordsColl, eInterpolationPolicy::eIP_Cubic);