Jpeg lossless rotation

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Gregt9
2012-09-14
2012-12-08
  • Gregt9
    Gregt9
    2012-09-14

    Hi,

    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?