[FFmpeg-user] scaling algorithms

[Michael Koch]

Am 21.09.2021 um 08:57 schrieb Paul B Mahol:
>>> See  new morpho filter, that gonna be in master soon.
>>>
>>> It is much faster than current filters and allow custom definition of
>>> structure/mask (rectangle/circle/etc) by using 2nd stream.

I'd like to test it. Please push it.

>> What's the meaning of "open" and "close"?
>> Please add some examples for the structure in the 2nd stream.
>>
>>
> Use google. and learn something about morphological transforms.
> FFmpeg can not also educate an uneducated.

In such cases it would be useful to find in the filter's documentation a 
link to a site where it's explained, for example:
https://en.wikipedia.org/wiki/Mathematical_morphology

Michael