Adam7 Algorithm - Passes

Passes

The pixels included in each pass, and the total pixels encoded at that point are as follows:

  • Pass 1, 1/64 = 1.5625%

  • Pass 2, 1/32 = 3.125%

  • Pass 3, 1/16 = 6.25%

  • Pass 4, 1/8 = 12.5%

  • Pass 5, 1/4 = 25%

  • Pass 6, 1/2 = 50%

  • Pass 7, 1/1 = 100%

When rendering, the image will generally be interpolated at earlier stages, rather than just these pixels being rendered.

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