Discussion in 'Chit Chat' started by nitro, Jan 30, 2011.

  1. nitro


    I have the dumbest question. I took some pictures with my iPhone, and a couple of them came out blurry. I downloaded Photoshop hoping to deblur them a bit. I expected to be able to hit a button and presto, but no such feature exists. In retrospect, when I thought about it, I realized that the mathematics of deblurring an image is straightforward, but in order to be able to choose the myriad of choices to deblur an image, it would not be obvious to an algorithm how to proceed, hence the lack of a one-click-solution.

    Anyway, my question is, does someone have clear instructions as to how to use Photoshop to deblur an image? I tried some instructions from the internet, but man I must be stupid or something :(
  2. I came across this fwiw.

    "Unfortunately, blur is one thing that cannot be corrected in photo editing software. NO software can do this, regardless of what anyone may tell you. A blurred digital photo is comprised of pixels that have captured and recorded this off focus information as correct. Software cannot make something out of nothing. It all thinks this is a perfect photo. There is no "hidden" sharpness there to "find". Software cannot focus your camera for you. It would be the same as taking a photo of a person with a piece of cardboard over their face, then expecting photo editing software to be able to remove the cardboard and display the face. It just does not work that way. The photo is what it is. Remove the cardboard and there is nothing there... there is no face hiding behind the cardboard in the photo. Same with a blurred photo... there is no sharpness data there, and software is not going to magically create it."

  3. nitro


    Thanks for the response.

    Right, you have to give up something to deblur, perhaps brightness, or you get graininess, etc. But I am willing to give up on those things. Given that you understand that you know you will be giving up something in the image, it can be done to some extent.

    For example, I tried to follow this, but I am doing something wrong:


  4. Pekelo


    Do what they do on CSI:

    "Enhance, enhance!!!"