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Graphics Interchange Format  |  1997-01-13  |  32KB  |  376x271  |  4-bit (16 colors)

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OCR: (a) ZW)-P 20.00-1-3)') (b) L2(x)=L0(x)+C1(x)-C2(x) Figure 7: (a) Parabola that closely approximates this residual error; (b) twice-corrected approximation.

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