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

pub fn laplacian(
    src: &dyn ToInputArray, 
    dst: &mut dyn ToOutputArray, 
    ddepth: i32, 
    ksize: i32, 
    scale: f64, 
    delta: f64, 
    border_type: i32
) -> Result<()>

Calculates the Laplacian of an image.

The function calculates the Laplacian of the source image by adding up the second x and y derivatives calculated using the Sobel operator:

block formula

This is done when ksize > 1. When ksize == 1, the Laplacian is computed by filtering the image with the following inline formula aperture:

block formula

Parameters

  • src: Source image.
  • dst: Destination image of the same size and the same number of channels as src .
  • ddepth: Desired depth of the destination image.
  • ksize: Aperture size used to compute the second-derivative filters. See #getDerivKernels for details. The size must be positive and odd.
  • scale: Optional scale factor for the computed Laplacian values. By default, no scaling is applied. See #getDerivKernels for details.
  • delta: Optional delta value that is added to the results prior to storing them in dst .
  • borderType: Pixel extrapolation method, see #BorderTypes

See also

Sobel, Scharr

C++ default parameters

  • ksize: 1
  • scale: 1
  • delta: 0
  • border_type: BORDER_DEFAULT