Method and system for generating a raster display having expandable graphic representations

• US 5,487,139 A
• Filed: 09/10/1991
• Issued: 01/23/1996
• Est. Priority Date: 09/10/1991
• Status: Expired due to Fees

• Current Assignee: Niagara Mohawk Power Corporation (National Grid PLC)
• Original Assignee: Niagara Mohawk Power Corporation (National Grid PLC)
• Inventors: Saylor, Charles H. M., Piszcz, Alan T., Cavo, Vincent N., Riccardi, James A. Jr.
• Primary Examiner(s): Nguyen, Phu K.
• Application Number:
  US07/758,875
• Time in Patent Office: 1,596 Days
• Field of Search: 395/133, 395/135, 395/155, 395/161, 340/747, 340/750, 340/732, 340/734, 345/114, 345/120, 345/121, 345/118
• US Class Current: 345/629
• CPC Class Codes: G06T 11/00 2D [Two Dimensional] image generation

Abstract

A vector database is used to create a vector map which is aligned with a raster map produced from an existing hand-drawn map. The aligned maps provide an X,Y coordinate basis for the locating of specific addresses within the territory represented by the raster map. The technique is particularly applicable to use by a utility company wherein the addresses identified are customer residences, each residence being coded with specific X,Y coordinates relative to the vector database. Relevant additional customer information is indexed through a graphical representation of the address which when displayed appears on the raster map at the appropriate X,Y coordinates relative to the vector map. Additional specific details of the method and system are presented.

Claims

1. A method for generating a raster display map having expandable graphic representations, said generating method employing an existing map and an object database containing information on addresses located within the territory represented by the existing map, said generating method comprising the steps of:

(a) obtaining and displaying a raster map corresponding to said existing map;

(b) providing a preexisting vector database having information characteristic to the territory represented by the raster map;

(c) displaying a vector map from said vector database, said displayed vector map containing said information characteristic to the territory depicted in said raster map;

(d) aligning corresponding areas of said raster map and said vector map;

(e) geocoding said object database information with X,Y coordinates relative to said vector database, at least some of said X,Y coordinates identifying addresses within the areas depicted by said aligned raster and vector maps; and

(f) displaying said raster map and a graphical representation of an address located within the area represented by the raster map, said graphical representation being expandable to provide object database information on said address.

2. The generating method of claim 1, wherein said object database information includes an address identification for each address represented therein, and wherein said geocoding step (e) includes assigning X,Y coordinates to said object database information using said address identifications.

3. The generating method of claim 2, wherein each of said address identifications includes a name identification and a number identification and wherein said geocoding step (e) includes the steps of:

(i) separating each of said addresses by name identification and number identification;

(ii) selecting one of the name identifications and searching said vector database for vector matches with said selected name; and

(iii) locating a selected address relative to the vectors identified as corresponding to said name identification match using said address number identification.

4. The generating method of claim 3, wherein said vector database comprises a TIGER vector database and said locating step (iii) includes:

searching said TIGER vector database to identify the particular vector having said name identification match and having said corresponding number identification disposed thereon; and

locating said selected address along said identified vector.

5. The generating method of claim 4, further comprising the step of converting said TIGER vector database information from Lat/Lon coordinates into X,Y coordinates prior to said geocoding step (e).

6. The generating method of claim 3, further comprising the step of repeating steps (i)-(iii) for each address identification in said object database.

7. The generating method of claim 1, further comprising the step of repeating steps (a)-(f) for a plurality of existing maps.

8. The generating method of claim 1, wherein said existing map comprises a network distribution map for a utility company and said addresses represented in said object database include customer locations, each customer location having an address identification associated therewith.

9. The generating method of claim 1, wherein said obtaining step (a) includes the step of rasterizing said existing map to obtain said raster map.

10. The generating method of claim 1, wherein said displaying step (f) includes displaying said aligned raster and vector maps and a graphical representation of at least one of said addresses located within the areas depicted by said aligned maps.

11. The generating method of claim 10, further comprising the step of removing said vector map from the display of aligned maps such that only the raster map and said graphical representation located therein appear in said display.

12. The generating method of claim 1, further comprising the step of:

(g) saving said raster map and said X,Y object database coordinates in a database for subsequent selective display.

13. The generating method of claim 12, wherein said method is utilized by a utility company for displaying a serviceable event on a rasterized image of a network distribution map, said method further including the steps of:

(h) accomplishing steps (a)-(e) and (g) prior to receiving a customer call on a serviceable event for display;

(i) receiving a customer service call and identifying an address associated with a serviceable event;

(j) identifying from said database the X,Y coordinates of said address associated with said serviceable event; and

(k) displaying said raster map and a graphical representation of said serviceable event using the X,Y coordinates of the event address.

14. The generating method of claim 13, wherein said steps (a)-(e) and (g) are accomplished for a plurality of existing maps, and wherein said method includes the step of selecting the appropriate raster map for display, said appropriate raster map having said X,Y coordinates of the event address located thereon.

15. The generating method of claim 13, further comprising the step of expanding said graphical representation of said serviceable event to obtain relevant information thereon from said database saved in step (g).

16. The generating method of claim 13, wherein said displaying step (k) includes displaying said raster map and said graphical representation of said serviceable event on a workstation monitor.

17. The generating method of claim 13, wherein said displaying step (k) includes displaying through a projector said raster map and said graphical representation of said serviceable event.

18. A system for generating a raster display map having expandable graphic representations, said generating system employing an existing territorial map and an object database containing information on addresses located within the territory represented by the existing map, said generating system comprising:

means for rasterizing said existing map to obtain a computerized raster map;

first computer storage means for containing an existing vector database having information characteristic to the territory represented by the rasterized map;

means for displaying a vector map from said vector database, said vector map containing said information characteristic to the territory depicted in the raster map;

means for aligning corresponding territories depicted in said raster map and said vector map;

means for assigning X,Y coordinates to said object database information using said vector database, wherein at least some of said X,Y coordinates assigned to said object database information identify addresses within the territory depicted by said aligned raster and vector maps; and

means for displaying said raster map with an appropriately positioned graphical representation of an address located within the territory represented by the raster map.

19. The generating system of claim 18, wherein said object database information includes an address identification for each address represented therein, and wherein said X,Y coordinate assigning means includes means for assigning X,Y coordinates to said object database information using said address address identifications.

20. The generating system of claim 19, wherein each of said address identifications includes a name identification and a number identification and wherein said X,Y coordinate assigning means includes:

means for separating each of said facility addresses by name identification and number identification;

means for selecting one of the name identifications and searching said vector database for vector matches with said selected name; and

means for locating the selected address relative to the vectors identified as corresponding to said name identification match using said address number identification.

21. The generating system of claim 20, wherein said existing map comprises a network distribution for a utility company and said addresses represented in said object database comprise customer locations, each customer location having an address identification associated therewith.