Function laplacian

pub fn laplacian(
    src: &impl GMatTraitConst,
    ddepth: i32,
    ksize: i32,
    scale: f64,
    delta: f64,
    border_type: i32,
) -> Result<GMat>

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:

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

Note: Function textual ID is “org.opencv.imgproc.filters.laplacian”

Parameters

• src: Source image.
• ddepth: Desired depth of the destination image.
• ksize: Aperture size used to compute the second-derivative filters. See [get_deriv_kernels] 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 [get_deriv_kernels] for details.
• delta: Optional delta value that is added to the results prior to storing them in dst .
• borderType: Pixel extrapolation method, see #BorderTypes. [BORDER_WRAP] is not supported.

Returns

Destination image of the same size and the same number of channels as src.

See also

Sobel, Scharr

C++ default parameters

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