Press escape to exit fullscreen

{{sketch.instructions}}

CC {{sketch.licenseObject.short}}

Archived Sketch

This sketch is created with an older version of Processing,
and doesn't work on browsers anymore.

View Source Code

Capture Screenshot

Summed Area Table

{{$t('general.by')}}
Carl
Dixon
A Summed Area Table is used to apply a box filter to an image. The benefit of using a SAT is that the processing time is independent of the size of the filter kernel. Move the mouse to change the kernel size. The algorithm is entirely stolen from this paper, although any flaws in the implementation are entirely my own: Crow, Franklin (1984). "Summed-area tables for texture mapping". SIGGRAPH '84: Proceedings of the 11th annual conference on Computer graphics and interactive techniques: 207-212.
We recovered an unsaved version of this sketch. Please review your changes below.

As a Plus+ Member feature, this source code is hidden by the owner.

  • {{co.title}}
    •
    {{$t('sketch.mode-pjs')}} {{$t('general.learnMore')}}
    Select mode or a template
    {{liveCodeLink}}
    • {{l.url.substr(l.url.lastIndexOf('/') + 1)}}
    {{$t('sketch.layoutDescription')}}

    {{k.category}}
    {{k.label}}
    {{k.description}}

    {{$t('sketch.seeMoreShortcuts')}}

    Versions are only kept for 7 days.
    Join Plus+ to keep versions indefinitely!

    {{$t('general.joinPlus')}}

    {{$t('sketch.versionsSummarized')}}

    {{ $t('general.joinPlus') }}