Grow first stream into second stream by connecting components. This makes it possible to build more robust edge masks.

This filter accepts the following options:

planes

Set which planes will be processed as bitmap, unprocessed planes will be copied from first stream. By default value 0xf, all planes will be processed.

threshold

Set threshold which is used in filtering. If pixel component value is higher than this value filter algorithm for connecting components is activated. By default value is 0.

The hysteresis filter also supports the framesync options.