Example
<svg width="900px" height="400px" viewBox="900 400">
<defs>
<filter id="GaussianHardEdge" >
<feConvolveMatrix order="3" kernelMatrix=" 1 1 1
1 1 1
1 1 1"/>
</filter>
</defs>
<image xlink:href="https://upload.wikimedia.org/wikipedia/commons/a/af/Fruit_Stall_in_Barcelona_Market.jpg" x="20px" y="20px" width="300px" height="200px" preserveAspectRatio="xMinYMin meet" />
<image filter="url(#GaussianHardEdge)" xlink:href="https://upload.wikimedia.org/wikipedia/commons/a/af/Fruit_Stall_in_Barcelona_Market.jpg" x="340px" y="20px" width="300px" height="200px" preserveAspectRatio="xMinYMin meet"/>
</svg>
(Source image by Daderot at Wikimedia Commons)
