Method and system for generating real-time simulator database from a plurality of input formats

• US 8,195,699 B1
• Filed: 11/30/2009
• Issued: 06/05/2012
• Est. Priority Date: 12/01/2008
• Status: Active Grant

• Current Assignee: Diamond Visionics, LLC
• Original Assignee: Diamond Visionics, LLC
• Inventors: Woodard, Timothy A.
• Primary Examiner(s): Lu, Kuen
• Application Number:
  US12/627,402
• Time in Patent Office: 918 Days
• Field of Search: 707/793, 707/803
• US Class Current: 707/793
• CPC Class Codes: G06F 16/29 Geographical information databases

Abstract

A method and system to provide visualization of high resolution terrain for use in real-time simulation for digital image displays that is derived directly from source data including imagery, classification, elevation and vector data at run-time with little or no off-line manipulation of the source data. The fidelity of the visualization is scaled while based on the graphic system'"'"'s capability readily available worldwide data exists for elevation vector and import runway data. System provides for facilitating run-time processing of source data utilizing a project file which lists each source file, desired attribute mapping and whether the source is enabled or disabled. For each source file a source proxy object is created in memory which references the target source file. The source proxy objects are stored in a vector manager in a spatial index to quickly determine which data sources intersect a given area. A spatial index can be queried for the proxies covering a requested geographical location. The resulting proxies are then accessed for the data within the query boundary. The system determines how attributes should be mapped from the source into what the internal algorithms need to process the data. The system defines how the data can be processed using a plurality of filter chains with a terminating filter which produces a result which is added to the scene imagery.

Claims

1. In a method of database generation for generating data images in a display in real-time, the method to facilitate one-time processing of source data including the steps of:

(a) providing a project file which lists each source file, desired attributes mapping and whether or not a source is enabled or disabled;

(b) providing for each source file listed in the project file a source proxy object in memory referencing the target source file and access thereto;

(c) storing the source proxy objects in a vector management in the spatial index to quickly determine which data sources intersect a given area;

(d) determining how attributes should be mapped once a source proxy has been created for a given source file into what internal algorithms need to process the data;

(e) providing attribute maps to support several common mapping schemes that can be configured to allow a user to define a custom attribute map; and

(f) defining how the data can be processed using filter chains comprising one or more filters when the first filter in the filter chain takes a record from a vector source as an input, performs the filters function and sends the output to the next filter in the chain, which is continued until the filter chain ends with a terminating filter which produces a result which is added to the scene imagery.

2. The method of claim 1 that includes the following steps of:

(a) providing an input from a parent application that sends latitude, longitude and observer location information for the image to be generated;

(b) providing a simulator display having an advanced graphic card connected to the display for producing real-time terrain images on the display;

(c) providing a software library that is connected to the output of the parent application to provide current latitude, longitude and observer view orientation to the software library using function calls;

(d) connecting the output of the software library to graphics API to communicate with the graphics card to display terrain images in a region of interest;

(e) using and including a worldwide data set derived from freely available sources for terrain visualization in said software library, said data including imagery, elevation, and vector data; and

(f) organizing user data in said library into a data hierarchy that includes user data derived from imagery data, elevation data and vector data.