Adobe Photoshop CS3 Tutorials - Extract Complex Shapes

Written by Gino on 03-10-2008 - 28 Responses

Adobe Photoshop CS3 Tutorials - Quick & Effective Way to Extract Complex Shapes

Tutorial by Markus

Ever tried to extract a model’s hair with the pen tool? Well, I gave up after a few minutes and eventually came up with another way to do that, which I’d like to share with you here in this Adobe Photoshop CS3 tutorial.

Step 1

Start with the image of your choice, I chose this one.

Step 2

Go to your Channels Palette and figure out which of these channels has the highest contrast between the object you want to extract and the background. Usually it’s the blue channel. Make a copy of that layer and make sure the layer is not hidden.

Step 3

Press CTRL+L to open up the Levels Window and drag the controllers to raise the contrast between background and the object which shall be extracted. Be careful, don’t overdo it. If the contrast is too high, we won’t be able to extract the smaller objects.

Step 4

Now use the Lasso Tool (M) to trace around remaining bright parts of the object you want to extract. In my picture for example, I made a selection of the model’s face.

Step 5

Fill the selection with black.

Step 6

CTRL+Click the channel in your Channels Palette to make a selection. Click on the main RGB Channel and now you can copy&paste the selection into a new file.

Final Image

Now you can start using your object for any kind of design project you want. This is how it looks when put on a simple white background:

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  1. Peter Stein | March 10th, 2008

    wow! this was very helpful! thank you so much, gotta try this one now :)

  2. MediaMisfit | March 10th, 2008

    Quick, simple and affective. I forget about the channels pallet all too often when working in Photoshop.

  3. Jeff Namnum | March 10th, 2008

    wow, you are the best!!! Like MM above I always forget the channels palette and wow this is a lot easier than zooming in to 4000% magnification ;)
    Thank you.

  4. sol | March 10th, 2008

    I totally needed this a second ago on a project I spent way too much time on. I’ll do this next time. Thanks!

  5. surferJ | March 10th, 2008

    This is a fantastic technique, but nothing new. It is admirable that you discovered it for yourself, which is of potentially more value, since it will help you see even more ways of “getting there”.

    Also consider additional tools, like dodge/burn around edges to increase contrast, curves, luminosity selections, etc.

  6. Gino | March 10th, 2008

    Yes, I wish I had known how to do this a long time ago!

    SurferJ - good idea using the other tools as well

  7. JPOG | March 11th, 2008

    Oh Thank You so much for posting that. It’s really helpful.

  8. GregE | March 11th, 2008

    This is one of the oldest Photoshop techniques on the books. I recall using this technique frequently as far back as Photoshop 3.X.

  9. Anna Cruz | March 11th, 2008

    sheesh… why didnt i think of that! photoshop has so many features that sometimes one can forget about the simplest techniques. thanks for this post! itll save me hours! :)

  10. N3 | March 11th, 2008

    I’m sorry to argue about this, but you have a really simple background, wich actually it’s quite easy to get rid of, with that technique
    why not give us one with a hard background? like a girl with that type of hair in the woods?

    still, nice tutorial mate, simple and noob proof

  11. Scott Williams | March 11th, 2008

    Wow! Old School! I was trained way back on PS 2.5 (no layers, no history). Everything had to be done in channels. Thanks for the effective quick method. Now I have to go shake off the flashback jittererererers.

  12. Mai | March 12th, 2008

    Nice alpha channels… Very nice.. I also stumbled upon this rather sexy clipping path tutorial and they also have this tutorial on Image Masking

  13. shital jethva | March 19th, 2008

    wow its very nice and easy trick.. i was searching for this type of solution and at last i got it.
    Thanks buddy.
    good job.
    keep it up!!!

  14. Asa | March 26th, 2008

    Is this possible to do if you’re only using the trial version of CS3?

  15. danny | March 27th, 2008

    my photo blog is http://www.djingen.blogspot.com be my guest. Danny thnx again great idea great work!!

  16. Fozz2k | April 5th, 2008

    Brilliant!! More like this please! Keep ‘em coming!

  17. Tashina | April 29th, 2008

    I must be retarded or something I get as far as putting everything in black and then im stuck I cannot get it to allow me to copy and paste nor does it show the outline is this because im using the trial??

  18. flashy | May 7th, 2008

    Amazing design technique! Do you plan offering Flash tutorials next? Keep up the good work!

  19. Harry Roberts | May 9th, 2008

    Wow, pretty nifty! Cheers.

  20. adnai | May 19th, 2008

    i am off to trying it.i hope it works. i will get back to you. for the record…..your choice of image couldnt have been better.

  21. Geoserv | June 2nd, 2008

    STUMBLED!

    Im still learning how to create banners, this is beyond me, thanks for posting though.

  22. Wisanggeni | June 5th, 2008

    Bloody works!
    …and it’s simple too!!

  23. kulpi | June 20th, 2008

    it easy extract subject when background have one colour, do you know how extract with difficult background? i mean something like this
    http://i193.photobucket.com/albums/z73/kulpi/Untitled-1.jpg

  24. jrey | July 9th, 2008

    thanks of idea.. astig ka!

  25. zark | July 10th, 2008

    hey…..can any one tell me plz that after selection how to make fill that selection with black ?????plz help me

  26. Diane UHLS | July 29th, 2008

    How do I subscribe to your feed. I am new to this so I have no idea what that means.

  27. Understanding RGB Channels to Extract Complex Shapes | Make Light Real | August 2nd, 2008

    [...] Adobe Photoshop CS3 Tutorials - Extract Complex Shapes | You the Designer Go to your Channels Palette and figure out which of these channels has the highest contrast between the object you want to extract and the background. Usually it’s the blue channel. Make a copy of that layer and make sure the layer is not hidden. [...]

  28. Extraer figuras compejas | PDreamz | October 12th, 2008

    [...] +link:Extract Complex Shapes Archivado en: photoshop, recursos [...]

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