bias setting in generalconvolution

[Wilbert]

Does someone know what the bias setting is generalconvolution is doing? Is it optional?

[Richard Berg]

If I recall, the general technique is to perform the convolution, divide by the divisor, and then add the bias.

Looking at the code, apparently a divisor isn't implemented. That's a shame considering the matrix elements have to be integers. I can add that to the to-do list.

[Wilbert]

If I recall, the general technique is to perform the convolution, divide by the divisor, and then add the bias.
Could you say a little bit more, because it still sounds vague? Why would you use a different bias as zero?

[Richard Berg]

It's nothing more than "turning up the volume." This is often used when a convolution will result in both negative and positive values, and you want to see the full range before it's clamped at 0. Emboss filters work this way.