RGB segmentation tool behaviour

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PablerasBCN
Posts: 284
Joined: Sat Jan 20, 2018 1:57 pm

RGB segmentation tool behaviour

Post by PablerasBCN »

Hi,

I'm not sure if this is an issue but usually I tendo to have issues cleanin up the blues.

I split the cloud based on the shown colours and on one side most of blue with some green is segmented yet on the other part of the cloud blues are still present.

Image

Image

I could understand if you max tolerance to some other colors fall in the first part but on the second part of the cloud there should not be blue-ish points left
PablerasBCN
Posts: 284
Joined: Sat Jan 20, 2018 1:57 pm

Re: RGB segmentation tool behaviour

Post by PablerasBCN »

I'm finding that I get better ressults if the two colors picked are not too far appart and chen increasing tolerance gives more desirable ressults
daniel
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Joined: Wed Oct 13, 2010 7:34 am
Location: Grenoble, France
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Re: RGB segmentation tool behaviour

Post by daniel »

Yes, looking at the code of this plugin, it seems the selection is done very simply within the min/max range defined by the 2 colors for each color component. So I guess it can give funny results if the range for some components is too wide.
Daniel, CloudCompare admin
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