| Quadtree
compression |
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| n | Lossless
compression |
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| system |
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| n | Image
is successively |
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| divided
into 4 until all |
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| pixels
in a square are the |
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| same |
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| Subdivide |
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| more |
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| All same |
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| colour,
don’t |
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| subdivide |
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