| <svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> | |
| <defs> <filter id="foo"> <feConvolveMatrix kernelMatrix="0 0 0 0 1 0 0 0 -1"/> </filter> </defs> | |
| <image width="2" height="3" xlink:href="bar" filter="url(#foo)" /> | |
| <rect x="10" y="10" width="100" height="100" fill="green"/> | |
| </svg> |
