2 Replies Latest reply on Feb 6, 2008 7:17 AM by Newsgroup_User

    Resize / Scaling an image

    immi_immi
      Hi there,

      When I resize a jpeg or a bitmap to a smaller size, the image actually becomes less clear. I am wondering why this happens and how I can retain the crispness/ sharpness of the original image, which in itself is a relatively large file.

      Thank
        • 1. Re: Resize / Scaling an image
          pixlor Level 4
          It depends on the method you use and by how much you are resizing. Also, factors of 2 generally resize better.

          Can you post an example of what you're starting with an how small you want to make it?
          • 2. Re: Resize / Scaling an image
            Level 7
            On Mon, 04 Feb 2008 19:20:48 +0300, immi immi
            <webforumsuser@macromedia.com> wrote:

            > Hi there, When I resize a jpeg or a bitmap to a smaller size, the image
            > actually becomes less clear. I am wondering why this happens

            This happens because you remove part of the pixels from your image.
            Obviously, if you resize your image down to 1 * 1 pixel image, you
            wouldn't see any detail at all.

            > and how I can
            > retain the crispness/ sharpness of the original image, which in itself
            > is a
            > relatively large file. Thank

            First, check out that you are not using "Nearest neighbour" resizing (it
            is good only for specific cases, like decreasing GIF file two times
            exactly maintaining palette). Second, try using Unsharp Mask on the
            resulting images. In some cases it's good to resize image in several
            smaller steps, running USM between them.

            --
            Ilya Razmanov
            http://photoshop.msk.ru - Photoshop plug-in filters