"radius: value too small" error invalidates UniformBlur handler

[sctanf]

I use a UniformBlur handler with a variable, so I want to be able to disable blur by setting the radius to 0. Instead of continuing with blur disabled, the handler stops working and I get no output.

In addition, UniformBlur was changed in version 2.0.0, what would be the equivalent values compared to the old UniformBlur?

[LI7XI]

Hello @sctanf

Afaik setting Radius parameter to 1 will disable blur.
About changes, in v2.0 RadiusAdaptation parameter was removed.

[sctanf]

Thanks @LI7XI

[d-uzlov]

In addition, UniformBlur was changed in version 2.0.0, what would be the equivalent values compared to the old UniformBlur?

Well, previously UniformBlur had a 0.25 coefficient applied to the specified radius. I don't really remember why, but I considered it a bug and removed it. So, if you had radius specified as 8, then now an equivalent radius should be 2. Unless I messed something up.

Afaik setting Radius parameter to 1 will disable blur.

It doesn't. Radius in the UniformBlur is not an integer value. Radius 1 and radius 1.1 will actually give you slightly different results because UniformBlur doesn't just average neighbour values.

Actually, right now UniformBlur actively prevents user from disabling blur completely. If some value would disable blur (like, 0.1 for sure would be equivalent to not having blur at all), then UniformBlur complains into log and plugin shuts off.

I want to be able to disable blur by setting the radius to 0

Well, it's not an ideal way to disable blur. A better solution would be to remove blur from the handlers suboption in unit- option.
I understand that this may be not so convenient. Next release will treat 0 as a special value to disable blur.

[sctanf]

Ok, thanks. In the meantime I won't use blur. Also, I noticed that blur attenuates high frequencies, and the way I use the output values, this causes some issues.