image = absImg (inImg)

Detailed Description

computation of the absolute value of an image, pixel by pixel algorithm

On output image values are given by:

$OutImg[i] = \lvert InImg[i]\rvert$

, with

$\lvert InImg[i]\rvert = \begin{cases} InImg[i], & \text{if }InImg[i] \geq 0 \\ -InImg[i], & \text{otherwise} \end{cases}$

Input and output images must have same size.

Example of Python code :

Example imports

import PyIPSDK

import PyIPSDK.IPSDKIPLArithmetic as arithm

Code Example

    # opening of input image
    geometry = PyIPSDK.geometry2d(PyIPSDK.eImageBufferType.eIBT_Int8, 510, 509)
    inImg = PyIPSDK.loadRawImageFile(inputImgPath, geometry)
    
    # computation of image absolute value
    outImg = arithm.absImg(inImg)

Example of C++ code :

Example informations

Header file

#include <IPSDKIPL/IPSDKIPLArithmetic/Processor/AbsImg/AbsImg.h>

Code Example

        // open input image
        ImageGeometryPtr pInputImageGeometry = geometry2d(inType, sizeX, sizeY);
        ImagePtr pInImg = loadRawImageFile(inPath, *pInputImageGeometry);
        // Sample with a generated output image
        // ------------------------------------
        // compute absolute value of input image
        ImagePtr pAutoOutImg = absImg(pInImg);
        // Sample with a provided output image
        // -----------------------------------
        // create output image
        ImageGeometryPtr pOutputImageGeometry = geometry2d(outType, sizeX, sizeY);
        boost::shared_ptr<MemoryImage> pOutImg(boost::make_shared<MemoryImage>());
        pOutImg->init(*pOutputImageGeometry);
        // compute absolute value of input image
        absImg(pInImg, pOutImg);