JP4669659B2 - 地図データの編成方法 - Google Patents
地図データの編成方法 Download PDFInfo
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- JP4669659B2 JP4669659B2 JP2003395089A JP2003395089A JP4669659B2 JP 4669659 B2 JP4669659 B2 JP 4669659B2 JP 2003395089 A JP2003395089 A JP 2003395089A JP 2003395089 A JP2003395089 A JP 2003395089A JP 4669659 B2 JP4669659 B2 JP 4669659B2
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C21/00—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00
- G01C21/38—Electronic maps specially adapted for navigation; Updating thereof
- G01C21/3863—Structures of map data
- G01C21/387—Organisation of map data, e.g. version management or database structures
- G01C21/3881—Tile-based structures
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S707/00—Data processing: database and file management or data structures
- Y10S707/99941—Database schema or data structure
- Y10S707/99943—Generating database or data structure, e.g. via user interface
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- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Databases & Information Systems (AREA)
- Automation & Control Theory (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
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Description
24 タイル
26 境界(格子線)
28 原点
30 稠密タイル
32、34、36 大面積パーセル
38 1つの地理領域
52 小面積パーセル
54 サブタイルの格子
56 サブタイル
58 サブタイル格子の原点
Claims (6)
- ある地理領域内に位置する複数の地理的特色を表す地図データを、物理的記憶媒体上に編成する方法で、コンピュータと物理的記憶媒体を有する計算プラットフォームにより遂行される方法であって、
前記地理領域を重なり合わないタイルの格子に編成するステップと、
前記地理領域内の全ての稠密タイルを識別するステップと、を備え、あるタイルのメトリック値があるパーセルのための最大メトリック値よりも大きければ、そのタイルは稠密タイルとして識別され、ここに、前記メトリック値はそのタイル内の地図データのデータサイズの推定であり、
全ての稠密タイルを識別するステップの後、各パーセルに含まれる地図データの部分をパーセルのための所定の最大メトリック値より小さくするように、稠密タイル内の地理的特色を表す地図データを複数のパーセルに細分するステップと、
前記識別された稠密タイル内に位置する地理的特色を表す地図データを除いて、各パーセル内に含まれる地図データの部分をパーセルのための所定の最大メトリック値より小さくするように、前記地理領域内に位置する前記地理的特色を表すもとの地図データを複数のパーセルに細分するステップと、を備え、
前記もとの地図データをパーセルに細分するステップは、矩形の地理領域全体から開始され、
(a) 前記矩形のメトリック値を計算するステップを含み、前記メトリック値は、前記矩形内に含まれる前記地図データのデータサイズの推定から、前記矩形内の稠密タイルのメトリック値を引いたものであり、
(b) 前記矩形内の稠密タイル内に位置する地理的特色を表す地図データを除いて、計算されたメトリック値があるパーセルための所定の最大メトリック値より小さければ、前記矩形に含まれる地図データからパーセルを形成するステップと、
(c) 前記計算されたメトリック値が、あるパーセルのための最大メトリック値より小さくなければ、前記矩形を2つの別の矩形に分割するステップとを含み、
各々の別の矩形についてステップ(a)、(b)、(c)を繰り返し、
更に、前記各パーセル内の地図データを一緒に前記物理的記憶媒体上に記憶するステップ、を備えることを特徴とする方法。 - 前記稠密タイルは、大都市エリアであることを特徴とする請求項1に記載の方法。
- 前記稠密タイルを複数のパーセルに細分するステップは、前記稠密タイル内の地理的特色を表す地図データをサブタイルの格子に編成するステップを含み、前記各サブタイルは格子境界線によって限定される地理エリアを取り囲み、前記稠密タイルをパーセルに細分するステップは前記格子境界線に沿って遂行されることを特徴とする請求項1に記載の方法。
- 前記物理的記憶媒体はCD−ROMディスクであることを特徴とする請求項1に記載の方法。
- 前記物理的記憶媒体はDVD−ROMディスクであることを特徴とする請求項1に記載の方法。
- 前記物理的記憶媒体はハードディスクであることを特徴とする請求項1に記載の方法。
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/304,229 US6782319B1 (en) | 2002-11-26 | 2002-11-26 | Method for organizing map data |
Publications (2)
Publication Number | Publication Date |
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JP2004177959A JP2004177959A (ja) | 2004-06-24 |
JP4669659B2 true JP4669659B2 (ja) | 2011-04-13 |
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Application Number | Title | Priority Date | Filing Date |
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JP2003395089A Expired - Fee Related JP4669659B2 (ja) | 2002-11-26 | 2003-11-26 | 地図データの編成方法 |
Country Status (5)
Country | Link |
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US (3) | US6782319B1 (ja) |
EP (1) | EP1429263B1 (ja) |
JP (1) | JP4669659B2 (ja) |
AT (1) | ATE424585T1 (ja) |
DE (1) | DE60326426D1 (ja) |
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EP1429263B1 (en) | 2009-03-04 |
US7058504B2 (en) | 2006-06-06 |
US20050027445A1 (en) | 2005-02-03 |
US7062377B2 (en) | 2006-06-13 |
EP1429263A1 (en) | 2004-06-16 |
ATE424585T1 (de) | 2009-03-15 |
DE60326426D1 (de) | 2009-04-16 |
US20060004515A1 (en) | 2006-01-05 |
US6782319B1 (en) | 2004-08-24 |
JP2004177959A (ja) | 2004-06-24 |
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