feGaussianBlur filter primitive

parameters:

stdDeviation: two positives integer for x and y

in: picture to modify

Example of code:

<defs>
   <filter id="MyFilter" filterUnits="userSpaceOnUse" x="0" y="0" width="400" height="400">
      <feImage xlink:href='pie.svgz' result='image1'/>
      <feGaussianBlur in='image1' stdDeviation='2,2' />
   </filter>
</defs>
<use filter="url(#MyFilter)" x='0' y='0'/>

Figure 1: feGaussianBlur apply to SVG objects, SourceAlpha and JPEG picture

Tool: you can modify x and y for stdDeviation and see effect on JPEG or SVG picture
Using feGaussianBlur, feOffset, feSpecularLighting and feComposite to create 3D effect lighting

FrontPage feColorMatrix feComponentTransfer feSpecularLightning feDiffuseLightning feSpotLight feDistantLight fePointLight feFlood feImage feTurbulence feTile feMerge feBlend feComposite feGaussianBlur feMorphology feConvolveMatrix feDisplacementMap feOffset