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Bresenham's algorithm with Grey scale

By M. L. V. Pitteway, D. J. Watkinson

Communications of the ACM, Vol. 23 No. 11, Pages 625-626

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The control parameter in Bresenham's algorithm, when interpreted as a measure of distance from a straight line boundary, gives a weighted average of the intensities on each side of the line. This can be used to produce an aesthetically pleasing visual effect with modern display devices.

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