Image processing method and apparatus

Details Image processing method and apparatus Image processing method and apparatus

2005-03-03

2008-10-21

Nugyen, Phu K (Department: 2628)

Computer graphics processing and selective visual display system

Computer graphics display memory system

C345S531000, C345S619000, C345S640000, C345S443000

Reexamination Certificate

active

07439980

ABSTRACT:
In image processing adapted to a display apparatus using a plurality of line buffers for storing data regarding dots aligned on scanning lines on the screen, when a line having a prescribed width and a prescribed length is drawn on the screen, a line drawing range is calculated with reference to start-point coordinates and end-point coordinates as well as the width of line, thus selecting dots on the screen with reference to coordinates of intersections between the scanning lines and the boundaries of the line drawing range, wherein data regarding the selected dots are written into at least one of the line buffers. In line terminating processing, a virtual circle whose diameter matches the width of the line is imaginarily drawn at one end of the line, so that data regarding dots belonging to the virtual circle are written into at least one of the line buffers.

REFERENCES:
patent: 5029106 (1991-07-01), Kai et al.
patent: 5625764 (1997-04-01), Tsujimoto et al.
patent: 6720976 (2004-04-01), Shimizu et al.
patent: 62-285188 (1987-12-01), None
patent: 04-175887 (1992-06-01), None

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