Dilate (Erode) Filter

Filter

RIF_IMAGE_FILTER_DILATE_ERODE

Description

This filter widens and enhances dark (bright) areas of the image.

For every image pixel, it brings the pixel value (luminosity) into line with the lowest (greatest) value of the 8 neighboring pixels (3x3 matrix). So, a dark (bright) pixel is added around dark (bright) areas. An isolated pixel on a brighter (darker) background will be changed to a big “pixel”, composed of 9 pixels, and that will create some noise in the image.

Parameters

Parameter

Type

Input/Output

Description

mode

uint

input

Operation mode. Supported modes:

RIF_DILATE (default)

RIF_ERODE

Usage Example

rif_image_filter filter = nullptr;
rifContextCreateImageFilter(context, RIF_IMAGE_FILTER_DILATE_ERODE, &filter);
rifImageFilterSetParameter1u(filter, "mode", RIF_DILATE);
rifCommandQueueAttachImageFilter(queue, filter, inputImage, outputImage);
rifContextExecuteCommandQueue(context, queue, nullptr, nullptr, nullptr);

Results

Dilate

Input image

Output image

Erode

Input image

Output image