Thursday, 2 April 2009

Perspective Correction in Photoshop

Here is a step by step guide on how to correct perspective in Photoshop. Again, this was found by searching on Google. I take no credit for this information, or any information taken from any website for that matter. The link, as always, will be posted at the bottom of the quote. And just so ya know, I will also be posting a bibliography (which will include all quotes and research sites) when this project has finished.

Anyway, here is the guide.

Part 1: Simple Perspective correction

  • The Photo has to be in 8bit mode.
  • Resize the photo that you have plenty of gray space surrounding it
  • Select all (CTRL+'A')
  • Menu: Edit->Transform->Perspective
  • Drag the upper left handle and move it to the left until the image looks good for you (this photo was intentionally a bit under corrected)
  • Photoshop renders a preview pretty fast. Don't be afraid of the quality the final rendering will do much better
  • Once the photo is ok hit "Enter" and Photoshop does the final rendering
  • Deselect the image (CTRL + 'D')
  • Ready!

Part 2: Refined Perspective Correction

  • Again prepare your image as you would usually and perform steps 1-6 as above. You get the following result (don't hit "Enter" yet).
  • Menu: Edit->Transform->Skew
  • Drag the the upper right handle to the right to get the right part better in parallel
  • Drag the upper right handle now up that you get the top better aligned
  • Hit "Enter" and Photoshop does the final rendering
  • Deselect
  • Crop the photo

http://www.outbackphoto.com/workshop/PSPerspectiveCorrection/PhotoshopPerspectiveCorrection.html

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