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Image compression exagerated in renders. [Solved]

lukon100lukon100 Posts: 761
edited July 2019 in Technical Help (nuts n bolts)

When I render (iray) a .jpg or .png of a picture that is UV mapped to a plane, the image compression flaws get exagerated.

See my attached screenshot. In that screenshot, notice how white blotches bleed outward from the black lines into the blue background.

Is there a way to fix this?

Image Compression Exagerated In Renders.jpg
1280 x 1024 - 506K
Post edited by lukon100 on

Comments

  • Richard HaseltineRichard Haseltine Posts: 96,850

    You can adjust the compression thresholds in the Advanced tab of Render Settings.

  • lukon100lukon100 Posts: 761
    edited July 2019

    Thanks, Richard. That fixes it.

    The way to use the compression thresholds is apparently this:

    Set the value of the "High Threshold" equal to the largest pixle dimention of the image. E.g., if using a 1000 by 1676 image, set the High Threshold to 1676.

    The "Medium Threshold" that controls when medium compression kicks in, is of little consequence to my particular render here. So It could be set lower than 1676, making it kick in, and the render still looks ok to me.

     

     

    Post edited by lukon100 on
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