SVGFEConvolveMatrixElement: bias property

The bias read-only property of the SVGFEConvolveMatrixElement interface reflects the bias attribute of the given <feConvolveMatrix> element.

Value

An SVGAnimatedNumber object.

Examples

undefined

Access the bias property

The bias property is used to adjust the brightness of the output.

html
<svg viewBox="0 0 200 200" xmlns="http://www.w3.org/2000/svg">
  <defs>
    <filter id="convolveFilterWithBias">
      <feConvolveMatrix
        in="SourceGraphic"
        order="3"
        kernelMatrix="0 -1 0 -1 5 -1 0 -1 0"
        bias="0.25" />
    </filter>
  </defs>
  <rect
    x="20"
    y="20"
    width="100"
    height="100"
    fill="lightblue"
    filter="url(#convolveFilterWithBias)" />
</svg>
js
const convolveMatrix = document.querySelector("feConvolveMatrix");

console.log(convolveMatrix.bias.baseVal); // Output: 0.25

Specifications

See also