Gaussian Blurring Filter

Filter

RIF_IMAGE_FILTER_GAUSSIAN_BLUR

Description

Gaussian blur (also known as Gaussian smoothing) is the result of blurring an image by a Gaussian function.

Parameters

Parameter	Type	Input/Output	Description
radius	uint	input	The radius of the region that is used for blurring. For an exact correspondence to the Gaussian blur, the window must be large enough that the Gaussian function falls on the edges of this window at almost 0. The larger the `sigma` parameter, the larger the window should be. Value range is [1, 50], default value is 1.
sigma	float	input	Parameter of the decrease of the Gaussian function. The larger the value, the slower the Gaussian function decreases, and the more the blur. Default value is 1.
tiling	uint	input	Enables use of local memory. Using of the local video memory can increase performance for large radii. Values are `RIF_FALSE` (default) and `RIF_TRUE`.

Usage Example

rif_image_filter filter = nullptr;
rifContextCreateImageFilter(context, RIF_IMAGE_FILTER_GAUSSIAN_BLUR, &filter);
rifImageFilterSetParameter1f(filter, "sigma", 3.0f);
rifImageFilterSetParameter1u(filter, "radius", 5);
rifCommandQueueAttachImageFilter(queue, filter, inputImage, outputImage);
rifContextExecuteCommandQueue(context, queue, nullptr, nullptr, nullptr);

Results

Input image

Output image