Vectorize within Rastermask module

Software darktable
1

Hi folks … I just have a question regarding the raster mask module and its behavior .
When I load a subject mask , created with PS and saved as pfm or png , into the module … then press the vectorize button I do get randomly various amounts of paths created . They do show up in the mask manager , as expected … but the number of those created paths is enormous . Varying from 15 right up to 90 , per image !!!
I found out how to get the correct path immediately … and then deleting the others that are not really actual paths !!! At least none of the others do show any sign of being a path .
Anyone an idea … why that is ?

Running on macOS Tahoe M1 and the latest DT nightly build

Andreas

2

Well, they are two different techniques. If you want to approach a raster with a vector you often need lot of nodes unless the raster image has a lot of squares, triangles and circles.

What you could do to see it darktable is the issues (which I highly doubt). Is load your mask in Inkscape and vectorize in it that program and compare that with darktable.

I find 15-90 actually very low.

3

THX for the answer …
you might have got my question wrong !!!
It´s not about nodes , it is about why are so many paths created within DT mask manager instead of one from a single mask created outside and imported into Raster Mask module ?

Andreas

4

Something to do with the mask, please post a PNG/PFM mask.