Apparatus and method for smoothing the lines drawn by a user at

Details Apparatus and method for smoothing the lines drawn by a user at Apparatus and method for smoothing the lines drawn by a user at

1994-11-23

1999-12-07

Johns, Andrew W.

Image analysis

Image enhancement or restoration

Edge or contour enhancement

382299, G06K 960

Patent

active

059996595

ABSTRACT:
A pen-based computer in which the lines drawn by a user are anti-aliased incrementally by applying a smoothing filter to the relatively high resolution pen sensor image and subsampling the result to provide a relatively low resolution image which is displayed using greyscale.

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Foley et al. `computer graphics:principles and practice` 1990, Addison Wesley, USA pp. 628-647; figure 14, 32*.
SID. International Syposium.Digest of Techn ical Papers May 12, 1987, USA -pp. 398-401 Oakley et al. Turbo Convolution: a fast antialiasing algorithm for dejaggin raster graphics displays.
Computer Design vol. 25, No. 11, Jun. 1986, USA--pp. 25-30 Tom Williams `board level image processors enter destop arena`.

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