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M
maïlysb33891061
Participant
December 29, 2019
Answered

create transparent background

  • December 29, 2019
  • 2 replies
  • 562 views

Hello,

I took a picture of a foot print on a white paper. I would like to turn this grey/white paper into a transparent background. 

How can I do it ? 

Thanks for your help.

M.

This topic has been closed for replies.
Correct answer Chuck Uebele

Select the red channel and duplicate it. Use levels to brighten the background and darken the foot print. Use a brush to clean up the white BG maybe in overlay mode. Invert the channel ctrl/cmd-i, then make a selection to apply to your main layer. Make sure your main layer isn't the background layer.

2 replies

Chuck Uebele
Community Expert
Chuck UebeleCommunity ExpertCorrect answer
Community Expert
December 29, 2019

Select the red channel and duplicate it. Use levels to brighten the background and darken the foot print. Use a brush to clean up the white BG maybe in overlay mode. Invert the channel ctrl/cmd-i, then make a selection to apply to your main layer. Make sure your main layer isn't the background layer.

    Ares Hovhannesyan
    Community Expert
    Ares HovhannesyanCommunity Expert
    Community Expert
    December 29, 2019

    You can use Magic Wand Tool for selecting gray pixels and then delete that pixel with Delete Command  For right selection of all gray pixels please use Magic Wand Tool "Tolerance" settings on Option bar. Tolerance  

     

    Also there is possibility to use Background Eraser Tool.https://helpx.adobe.com/photoshop/using/erasing-parts-image.html

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