Jpeg lossless rotation

  • Gregt9

    Gregt9 - 2012-09-14


    Thanks for this great software.

    I have a lot of jpeg images and I tried to make a lossless rotation.
    With some images it works good but with many others i can't make a lossless rotation, images don't rotate at all.
    I attach one of them

  • Gregt9

    Gregt9 - 2012-09-14

    The image is here

  • Gregt9

    Gregt9 - 2012-09-14

    Sorry, I don't know how attach image

  • David Kleiner

    David Kleiner - 2012-09-28

    Lossless JPEG rotation only works when the width and height of the image (in pixels) are both dividable by 8.
    This is a restriction imposed by the JPEG compression itself and not an implementation issue.

  • Gregt9

    Gregt9 - 2012-10-02

    Is it possibile to apply a lossless crop to the picture to conform it to an image which width and height are both dividable by 8?


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