System and method for rendering high-resolution critical items

• US 6,809,731 B2
• Filed: 01/08/2002
• Issued: 10/26/2004
• Est. Priority Date: 01/08/2002
• Status: Expired due to Term

• Current Assignee: Rockwell Collins Simulation and Training Solutions, LLC (Rtx Corporation)
• Original Assignee: Evans & Sutherland Computer Corp. (Elevate Entertainment, Inc.)
• Inventors: Gardiner, Harold Dee, Muffler, Ronald J.
• Primary Examiner(s): Wong, Don
• Assistant Examiner(s): MANCUSO, HUEDUNG XUAN CAO
• Application Number:
  US10/042,540
• Publication Number:
  US 20030128210A1
• Time in Patent Office: 1,022 Days
• Field of Search: 345/428, 345/419
• US Class Current: 345/428
• CPC Class Codes: G06T 15/20 Perspective computation

Abstract

A device is provided for rendering computer graphic images with a database and geometric processor to process a plurality of polygons. The device includes a background rendering engine to render the polygons received from the geometric processor. A critical item detector is configured to identify polygons received from the geometric processor that have at least a portion of the polygon within a critical item region. In addition, a critical item rendering engine is included to render polygons identified by the critical item detector. The identified polygons in the critical item engine are rendered at a higher resolution than the polygons rendered by the background rendering engine. A critical item load manager is coupled to the critical item rendering engine to increase or decrease a critical item load being rendered by the critical item rendering engine, and to match a deterministic processing time allowed.

Claims

1. A device for rendering computer graphic images, including a database and geometric processor to process a plurality of polygons, comprising:

(a) a background rendering engine to render the polygons received from the geometric processor;

(b) a critical item detector configured to identify polygons received from the geometric processor that have at least a portion of the polygon within a critical item region;

(c) a critical item rendering engine to render polygons identified by the critical item detector, wherein the identified polygons are rendered at a higher resolution than the polygons rendered by the background rendering engine; and

(d) a critical item load manager, coupled to the critical item rendering engine, to increase or decrease a critical item load being rendered by the critical item rendering engine and to match a deterministic processing time allowed.

2. A device as in claim 1, wherein the critical item load is increased or decreased by increasing or decreasing resolution of the critical items to conform to the deterministic processing time allowed for the critical rendering engine.

3. A device as in claim 1, wherein the critical item load is increased or decreased by increasing or decreasing critical item region sizes to conform to the deterministic processing time allowed for the critical rendering engine.

4. A device as in claim 1, wherein the critical item load is increased or decreased by increasing or decreasing the number of critical items rendered to conform to the deterministic processing time allowed in the critical rendering engine.

5. A device as in claim 1, further comprising a critical item combiner to combine polygons from the background rendering engine and the critical item rendering engine by using a critical item flag to identify and copy the pixels from the critical item rendering engine over the corresponding pixels rendered by the background rendering engine.

6. A device as in claim 5, further comprising a high-resolution display to receive and display a completed output from the critical item combiner.

7. A device as in claim 5, wherein the polygons with a critical item flag are rendered at low-resolution in the background rendering engine and at high-resolution in the critical item rendering engine and then the critical item combiner copies high-resolution polygons over corresponding low resolution polygons.

8. A device as in claim 5, wherein the polygons with a critical item flag are only rendered in the critical item rendering engine at high-resolution and then copied into the low-resolution background using the critical item combiner.

9. A device as in claim 1, wherein the critical item load manager further comprises a critical item rendering processor sensor to measure a length of time the critical item rendering engine takes to render a current list of polygons.

10. A device for rendering a high-resolution computer graphic image using polygons, comprising:

(a) a database having polygons which form an environment model, wherein every polygon in the environment model is able to be defined as a critical item;

(b) a critical item detector to detect critical item polygons associated with a critical item region to be rendered at a higher resolution;

(c) a rendering engine to render critical item polygons at a higher resolution than a rendered background; and

(d) a critical item combiner to expand the rendered background and inset higher resolution critical item polygons into the rendered background for simultaneous display.

11. A device as in claim 10, wherein the critical item combiner further comprises a background expander to expand a low-resolution background image into the high-resolution output format needed for display.

12. A device as in claim 11, wherein the critical item combiner further comprises an image blender configured to replace the expanded low-resolution background image with high-resolution critical item polygons where high-resolution critical item polygons have been rendered.

13. A device for rendering a high-resolution graphic image, comprising:

(a) a database of polygons where each polygon is enabled to be associated with a critical item flag and a critical item priority;

(b) a geometric processor to geometrically transform polygons from the database;

(c) a critical item detector configured to identify polygons received from the geometric processor, which are associated with a critical item region;

(d) a critical item rendering engine configured to receive polygons identified by the critical item detector using the critical item region, and to render the polygons in a higher resolution than background polygons; and

(e) a critical item load manager, coupled to the critical item rendering engine, to determine the number of critical items to be rendered for a frame based on a processing time available for rendering of critical items and the critical item priority of the polygons.

14. A device as in claim 13, wherein the polygons are arranged based on critical item priority and polygons with the highest critical item priority are rendered first based on the processing time available.

15. A method for rendering critical objects in a computer graphic image at a higher resolution than background objects in order to provide high-resolution output items for a viewer, comprising:

(a) associating a critical item flag with the critical objects stored in a database that models an environment;

(b) detecting critical objects based on a critical item region;

(c) rendering the detected critical objects at a higher resolution than background objects; and

(d) combining a lower resolution background with higher resolution critical objects.

16. A method as in claim 15, further comprising the step of expanding the lower resolution background to fill a display resolution.

17. A method as in claim 16, further comprising the step of insetting higher resolution critical objects into the lower resolution background to create a single frame.

18. A method as in claim 17, further comprising the step of allowing the high-resolution critical objects to be displayed together with the lower resolution background.

19. A method as in claim 15, further comprising the step of defining objects as at least one polygon.

20. A device for rendering computer graphic images, including a database of a plurality of polygons, comprising:

(a) a background rendering engine to render the polygons received from the database in lower resolution;

(b) a critical item detector configured to identify critical items received from database;

(c) a critical item rendering engine to render polygons identified by the critical item detector, wherein the identified polygons are rendered at a higher resolution than the polygons rendered by the background rendering engine; and

(d) a critical item combiner to expand the rendered background and copy higher resolution critical item polygons over corresponding background polygons in a

(e) display frame.