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Improve downscale #720

Merged
merged 7 commits into from
Apr 17, 2018
Merged

Improve downscale #720

merged 7 commits into from
Apr 17, 2018

Commits on Jan 27, 2018

  1. Add an example for testing downscaling

    @kaj
    kaj committed Jan 27, 2018
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Commits on Jan 28, 2018

  1. Fix size of sample when scaling. 

    The floating point "size" used for nearest should be 0, not 0.5.  Fix
clamping so at least one source pixel is used sampled for each output
pixel, but also so the floating point "size" applies to source size.

I'm not too sure of this for scaling UP, but for scaling _down_ it
seems more or less right.
    @kaj
    kaj committed Jan 28, 2018
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Commits on Feb 3, 2018

  1. Merge branch 'master' into improve-downscale

    @kaj
    kaj committed Feb 3, 2018
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  2. Add thumbnail methods. 

    Fast integer-only downscaling.
    @kaj
    kaj committed Feb 3, 2018
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Commits on Feb 4, 2018

  1. I think this math might be more sound.

    @kaj
    kaj committed Feb 4, 2018
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  2. Add scaleup example.

    @kaj
    kaj committed Feb 4, 2018
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  3. Minor codestyle / doc.

    @kaj
    kaj committed Feb 4, 2018
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