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Thread: Looking for optimized jpeg encoder/compressor

  1. #1
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    Looking for optimized jpeg encoder/compressor

    I'm about to scan some stuff.
    ussual i swear by png because its mostly black/white stuff i scan. and png is manageable size wize after proper preprocessing.

    However I am now going to color/photo stuff and need jpeg so im really not wanting to use the 15+ year old jpeg compresson in the software im using and want something that are more Quality focussed.
    I am willing to use a good amount of time and CPU power on the jpeg conversion phase 30 min for a file on a ryzen 1700 core would be considere towards the fast end.

    Any recommendations to squeeze max quality out of a given bit usage?

    system: Windows 7 64 bit

    -- edit --
    corrected a "not" to "now"
    Last edited by SvenBent; 29th August 2019 at 03:57.

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    Administrator Shelwien's Avatar
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    Member SolidComp's Avatar
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    JPEG Archive is outstanding: https://github.com/danielgtaylor/jpeg-archive

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    Quote Originally Posted by Shelwien View Post
    My guesswork is that half of guetzli's savings come from color modeling. For black-and-white images encoded with a single channel those savings are not available. It can still pay off, particularly in the high end quality.

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    Quote Originally Posted by Jyrki Alakuijala View Post
    My guesswork is that half of guetzli's savings come from color modeling. For black-and-white images encoded with a single channel those savings are not available. It can still pay off, particularly in the high end quality.
    My bad i mistyped "However I am noT going to color/photo " should have been "However I am now going to color/photo "


    Testing Gueztli right. Looks to hit the time frame requirements lol

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    im seeign a unexpected ehaviero with gueztli

    quality 99 is smaller than quality 90.
    I would assume the pictures with less quality would take less space or am i reversing the quality parameters ?

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    Quote Originally Posted by SvenBent View Post
    im seeign a unexpected ehaviero with gueztli

    quality 99 is smaller than quality 90.
    I would assume the pictures with less quality would take less space or am i reversing the quality parameters ?
    Post an issue to the GitHub repository with the example data if possible. We will look at it and at minimum come up with a great sounding explanation why it happens.

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    SolidComp (31st August 2019)

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