bias attribute shifts the range of the filter. After applying the
kernelMatrix of the
<feConvolveMatrix> element to the input image to yield a number and applied the
divisor attribute, the
bias attribute is added to each component. This allows representation of values that would otherwise be clamped to 0 or 1.
You can use this attribute with the following SVG elements:
One application of bias is when it is desirable to have 0.5 gray value be the zero response of the filter.
|Filter Effects Module Level 2 |
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