feGaussianBlur element | SVGFEGaussianBlurElement object

Performs a Gaussian blur on the input image.

Scalable Vector Graphics: Filter Effects, Section 15.25.19

Syntax


<feGaussianBlur in="SourceAlpha" 
                stdDeviationX="4" 
                stdDeviationY="4" 
                result="blur"/>

DOM Information

Inheritance Hierarchy

Node

Element

SVGElement

SVGFEGaussianBlurElement

Members

The SVGFEGaussianBlurElement object has these types of members:

Methods
Properties

Methods

The SVGFEGaussianBlurElement object has these methods.

Method	Description
setStdDeviation	Sets the standard deviation values used in calculating a Gaussian blur.

Properties

The SVGFEGaussianBlurElement object has these properties.

Property	Access type	Description
height		Gets or sets the height of an element.
in1	Read-only	Identifies input for the given filter primitive.
result	Read-only	Provides a reference for the output result of a filter.
stdDeviationX	Read-only	Gets a value that indicates the standard deviation in the x-direction, used in calculating a Gaussian blur.
stdDeviationY	Read-only	Gets a value that indicates the standard deviation in the y-direction, used in calculating a Gaussian blur.
width		Defines the width of an element.
x		Gets or sets the x-coordinate value.
y		Gets or sets the y-coordinate value.

Standards information

Scalable Vector Graphics: Filter Effects, Section 15.25.19

Remarks

The Gaussian blur kernel is an approximation of the normalized convolution G(x,y) = H(x)I(y), where H(x) = exp(-x²/ (2s²)) / sqrt(2* pi*s²) and I(y) = exp(-y²/ (2t²)) / sqrt(2* pi*t²) with 's' being the standard deviation in the x direction and 't' being the standard deviation in the y direction, as specified by the stdDeviationX and stdDeviationY properties.