algorithm allowing to invert 2d image intensity More...

IPSDKIPLINTENSITYTRANSFORM_API image::ImagePtr	ipsdk::imaproc::itrans::invert2dImg (const image::ImageConstPtr &pInImg)
	wrapper function for algorithm allowing to invert 2d image intensity More...

IPSDKIPLINTENSITYTRANSFORM_API void	ipsdk::imaproc::itrans::invert2dImg (const image::ImageConstPtr &pInImg, const image::ImagePtr &pOutImg)
	wrapper function for algorithm allowing to invert 2d image intensity More...

Detailed Description

algorithm allowing to invert 2d image intensity

Given an input image $InImg$ , output image $OutImg$ as follow :

$OutImg[i] = K - InImg[i]$

where $K = \min\{InImg\} + \max\{InImg\}$ is defined from input image extrema.

This transformation allows to preserve image range since :

$\min\{InImg\} = \min\{OutImg\}$
$\max\{InImg\} = \max\{OutImg\}$

Here is an example of 2d image greyscale inversion applied to a 8-bits grey level image :

During this transformation, image histogram is mirrored around mean input range $\frac{\min\{InImg\} + \max\{InImg\}}{2}$ :

In this case algorithm is independently applied plan by plan (ie image extrema are computed and applied plan by plan), for a 3d version of this algorithm see Greyscale inversion of 3d image.

Attributes description

Attribute description for algorithm :

Name	ToolTip	Default Initializer
ipsdk::imaproc::attr::InImg	[Input] image for processing operation	X
ipsdk::imaproc::attr::OutImg	[Output] image for processing operation	duplicateInOut (_pOutImg, _pInImg)

Global Rule description

Global rule description for algorithm :
ipsdk::imaproc::matchSizeAndType (_pInImg,_pOutImg)

Example of Python code :

Example imports

import PyIPSDK

import PyIPSDK.IPSDKIPLIntensityTransform as itrans

Code Example

    # opening of input images
    inImg = PyIPSDK.loadTiffImageFile(inputImgPath)
    
    # greyscale inversion of input image
    outImg = itrans.invert2dImg(inImg)

Example of C++ code :

Example informations

Associated library

IPSDKIPLIntensityTransform

Header file

#include <IPSDKIPL/IPSDKIPLIntensityTransform/Processor/Invert2dImg/Invert2dImg.h>

Code Example

    // opening of input image
    ImagePtr pInImg = loadTiffImageFile(inputGreyImgPath);
    // greyscale inversion of input image
    ImagePtr pOutImg = invert2dImg(pInImg);

See also: Invert2dImgLvl1; Invert2dImgLvl2

Function Documentation

◆ invert2dImg() [1/2]

IPSDKIPLINTENSITYTRANSFORM_API image::ImagePtr ipsdk::imaproc::itrans::invert2dImg ( const image::ImageConstPtr & pInImg )

wrapper function for algorithm allowing to invert 2d image intensity

Exceptions

ipsdk::processor::IPSDKBaseProcessingException on failure

◆ invert2dImg() [2/2]

IPSDKIPLINTENSITYTRANSFORM_API void ipsdk::imaproc::itrans::invert2dImg	(	const image::ImageConstPtr &	pInImg,
		const image::ImagePtr &	pOutImg
	)

wrapper function for algorithm allowing to invert 2d image intensity

Exceptions

ipsdk::processor::IPSDKBaseProcessingException on failure