ImageDev

KillBorder2d

Removes the objects connected to the borders of a segmented 2D image.

Access to parameter description

For an introduction: This algorithm removes all the objects touching the borders of the 2D image.
Objects connected to the label image borders are identified using a numerical reconstruction from markers made of pixels of the image frame. Then we remove these objects from the input image with a logical subtraction.

To reorder labels use ReorderLabels algorithm

<b> Figure 1. </b> Illustration of the BorderKill algorithm
Figure 1. Illustration of the BorderKill algorithm

See also
See related examples

Function Syntax

This function returns outputObjectImage. 
// Function prototype
std::shared_ptr< iolink::ImageView >
killBorder2d( std::shared_ptr< iolink::ImageView > inputObjectImage,
              KillBorder2d::Neighborhood neighborhood,
              std::shared_ptr< iolink::ImageView > outputObjectImage = NULL );

Class Syntax

Parameters

Parameter Name Description Type Supported Values Default Value
input
inputObjectImage
The input binary or label image. Image Binary or Label nullptr
input
neighborhood
The 2D neighborhood configuration.
CONNECTIVITY_4 Morphological reconstruction is performed with a 4-neighbor connectivity.
CONNECTIVITY_8 Morphological reconstruction is performed with a 8-neighbor connectivity.
Enumeration CONNECTIVITY_8
output
outputObjectImage
The output binary or label image. Its dimensions and type are forced to the same values as the input. Image nullptr

Object Examples

auto polystyrene_lab_seq = readVipImage( std::string( IMAGEDEVDATA_IMAGES_FOLDER ) + "polystyrene_lab_seq.vip" );

KillBorder2d killBorder2dAlgo;
killBorder2dAlgo.setInputObjectImage( polystyrene_lab_seq );
killBorder2dAlgo.setNeighborhood( KillBorder2d::Neighborhood::CONNECTIVITY_8 );
killBorder2dAlgo.execute();

std::cout << "outputObjectImage:" << killBorder2dAlgo.outputObjectImage()->toString();

Function Examples

auto polystyrene_lab_seq = readVipImage( std::string( IMAGEDEVDATA_IMAGES_FOLDER ) + "polystyrene_lab_seq.vip" );

auto result = killBorder2d( polystyrene_lab_seq, KillBorder2d::Neighborhood::CONNECTIVITY_8 );

std::cout << "outputObjectImage:" << result->toString();