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Threshold leaves grey pixels behind

Mar 31, 2013 7:51 PM

I am using the threshold tool to create a stencil. I first used the Quick Selection tool to cut out the objects I wanted and then tried to use the Threshold tool to create a black and White Only image.


However, for some reason, especially on the edges of the objects, the threshold tool left some grey marks, instead of black and white.


Does anyone know why this is and how I can fix it?


I tried using the threshold tool again, but not all of the grey marks were removed

  • Currently Being Moderated
    Mar 31, 2013 8:03 PM   in reply to Modulus365

    This is just a guess from past posts.  Go to edit/preference/general at the top click image interpolation and in dropdown box click "nearest neighbor".

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  • Noel Carboni
    23,514 posts
    Dec 23, 2006
    Currently Being Moderated
    Mar 31, 2013 8:09 PM   in reply to Modulus365

    Can you post before and after examples?  Small crops will be fine.


    Are you looking at the image at 100% zoom?  You need to be.



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  • Currently Being Moderated
    Apr 1, 2013 5:41 AM   in reply to Modulus365

    Threshold will have made pure black and white pixels, but some pixels will be semi-transparent because the Quick Selection made a soft edge.


    Do 'Layer > Layer Mask > From Transparency' then apply Threshold to the mask to give it a hard edge, too.

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