[−][src]Function opencv::imgproc::connected_components

pub fn connected_components(
    image: &dyn ToInputArray, 
    labels: &mut dyn ToOutputArray, 
    connectivity: i32, 
    ltype: i32
) -> Result<i32>

computes the connected components labeled image of boolean image

image with 4 or 8 way connectivity - returns N, the total number of labels [0, N-1] where 0 represents the background label. ltype specifies the output label image type, an important consideration based on the total number of labels or alternatively the total number of pixels in the source image. ccltype specifies the connected components labeling algorithm to use, currently Grana (BBDT) and Wu's (SAUF) algorithms are supported, see the #ConnectedComponentsAlgorithmsTypes for details. Note that SAUF algorithm forces a row major ordering of labels while BBDT does not. This function uses parallel version of both Grana and Wu's algorithms if at least one allowed parallel framework is enabled and if the rows of the image are at least twice the number returned by #getNumberOfCPUs.

Parameters

  • image: the 8-bit single-channel image to be labeled
  • labels: destination labeled image
  • connectivity: 8 or 4 for 8-way or 4-way connectivity respectively
  • ltype: output image label type. Currently CV_32S and CV_16U are supported.
  • ccltype: connected components algorithm type (see the #ConnectedComponentsAlgorithmsTypes).

Overloaded parameters

  • image: the 8-bit single-channel image to be labeled
  • labels: destination labeled image
  • connectivity: 8 or 4 for 8-way or 4-way connectivity respectively
  • ltype: output image label type. Currently CV_32S and CV_16U are supported.

C++ default parameters

  • connectivity: 8
  • ltype: CV_32S