Object based graphics system for rasterizing images in real-time

Details Object based graphics system for rasterizing images in real-time Object based graphics system for rasterizing images in real-time

1993-04-28

1995-08-22

Nguyen, Phu K.

G06F 1572

Patent

active

054448395

ABSTRACT:
An object based graphics processor includes an input device for receiving object outlines of an image intended for rasterized display, each of the outline comprising at least one object fragment, a sorter for sorting the object fragments into a rasterization sequence corresponding to a scan line in a raster format for rasterized display, and a storage having a first storage area and a second storage area connected to the sorter for storing the rasterization sequence in one of the storage areas. A reading device connected to the storage reads a previously stored rasterization sequence in real-time and calculates object edges in a respective scan line, and prioritizing device assigns pixel data values within each of the scan lines based upon priority levels assigned to the object edges. The pixel data values are output from the processor for rasterized display.

REFERENCES:
patent: 4837447 (1989-06-01), Pierce et al.
patent: 5305432 (1994-04-01), Kubota
patent: 5313573 (1994-05-01), Takahama
"A Monolithic Scan-Line Bit Producer For Real-Time Image Rasterization", Kanopoulos, et al., Microprocessing And Microprogramming, vol. 21, No. 1-5, Aug. 1987, pp. 57-64.
"Computer Graphics: Principles 1-23 And Practice (Second Edition)", Foley, et al., 1990, (Chapter 15, Section 15.6), pp. 680-686.
"Automatic Curve Fitting with Quadratic B-Spline Functions And Its Applications to Computer-Assisted Animation", Yang, et al., Computer Vision, Graphics And Image Processing, vol. 33, 1986, pp. 346-363.

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