Function erode_def

pub fn erode_def(
    src: &impl GMatTraitConst,
    kernel: &impl MatTraitConst,
) -> Result<GMat>

Erodes an image by using a specific structuring element.

The function erodes the source image using the specified structuring element that determines the shape of a pixel neighborhood over which the minimum is taken:

Erosion can be applied several (iterations) times. In case of multi-channel images, each channel is processed independently. Supported input matrix data types are [CV_8UC1], [CV_8UC3], [CV_16UC1], [CV_16SC1], and [CV_32FC1]. Output image must have the same type, size, and number of channels as the input image.

Note:

• Rounding to nearest even is procedeed if hardware supports it, if not - to nearest.
• Function textual ID is “org.opencv.imgproc.filters.erode”

Parameters

• src: input image
• kernel: structuring element used for erosion; if element=Mat(), a 3 x 3 rectangular structuring element is used. Kernel can be created using getStructuringElement.
• anchor: position of the anchor within the element; default value (-1, -1) means that the anchor is at the element center.
• iterations: number of times erosion is applied.
• borderType: pixel extrapolation method, see cv::BorderTypes
• borderValue: border value in case of a constant border

See also

dilate, morphologyEx

Note

This alternative version of erode function uses the following default values for its arguments:

• anchor: Point(-1,-1)
• iterations: 1
• border_type: BORDER_CONSTANT
• border_value: morphologyDefaultBorderValue()