feImage Filter Element¶
This filter primitive refers to a graphic external to this filter element, which is loaded or rendered into an RGBA raster and becomes the result of the filter primitive.
This filter primitive can refer to an external image or can be a reference to
another piece of SVG. It produces an image similar to the built-in image source
'SourceGraphic' except that the graphic comes from an external source.
If the xlink:href references a stand-alone image resource such as a JPEG, PNG or SVG file, then the image resource is rendered according to the behavior of the image element; otherwise, the referenced resource is rendered according to the behavior of the use element. In either case, the current user coordinate system depends on the value of attribute primitiveUnits on the filter element. The processing of the preserveAspectRatio attribute on the feImage element is identical to that of the image element.
When the referenced image must be resampled to match the device coordinate system, it is recommended that high quality viewers make use of appropriate interpolation techniques, for example bilinear or bicubic. Depending on the speed of the available interpolents, this choice may be affected by the image-rendering property setting.
For common properties see: Filter Primitives Overview
xlink:href – <iri>
A IRI reference to the image source.
'[defer] <align> [<meetOrSlice>]'
If attribute preserveAspectRatio is not specified, then the effect is as if a value of
'xMidYMid'meet were specified.