Context-base input/output system

Details Context-base input/output system Context-base input/output system

1988-12-29

1991-04-30

Moore, David K.

Image analysis

Histogram processing

For setting a threshold

340703, 382 13, 382 44, 382 57, 382 59, G06K 900

Patent

active

050125214

ABSTRACT:
When a pattern is manually drawn on a tablet with an electronic pen, a computer executes a graphic processing to display on a CRT a geometrically defined pattern which best resembles the manually drawn pattern. Moreover, a pattern element is erased, divided or copied by memorizing a graphic processing command in advance in a manner to correspond to a predetermined pattern or operator and by manually drawing this operator on the tablet with the electronic pen.
The pattern data can be inputted to the computer to display the pattern by the same operations as those for drawing on a paper with writing apparatus so that the pattern can be drawn on the basis of the human engineering without feeling any physical disorder.

REFERENCES:
patent: 3611291 (1971-10-01), Frank
patent: 3930237 (1975-12-01), Villers
patent: 4475239 (1984-10-01), van Raamsdonk
patent: 4525860 (1985-06-01), Boivie
patent: 4550438 (1985-10-01), Convis et al.
patent: 4553261 (1985-11-01), Froessl
patent: 4672677 (1987-06-01), Yamakawa
Mitchell, "Computer-Aided Architectural Design", pp. 329-332.

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