JP2001167288A - Three-dimensional map display device - Google Patents

Three-dimensional map display device

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Publication number
JP2001167288A
JP2001167288A JP34846099A JP34846099A JP2001167288A JP 2001167288 A JP2001167288 A JP 2001167288A JP 34846099 A JP34846099 A JP 34846099A JP 34846099 A JP34846099 A JP 34846099A JP 2001167288 A JP2001167288 A JP 2001167288A
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JP
Japan
Prior art keywords
object
data
viewpoint
distance
map
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP34846099A
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Japanese (ja)
Inventor
Nobuhiko Wakayama
順彦 若山
Original Assignee
Matsushita Electric Ind Co Ltd
松下電器産業株式会社
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Application filed by Matsushita Electric Ind Co Ltd, 松下電器産業株式会社 filed Critical Matsushita Electric Ind Co Ltd
Priority to JP34846099A priority Critical patent/JP2001167288A/en
Publication of JP2001167288A publication Critical patent/JP2001167288A/en
Application status is Pending legal-status Critical

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Abstract

PROBLEM TO BE SOLVED: To solve a problem that a car navigation system requires high plotting ability for plotting a three-dimensional map at the point of view watched from a driver.
SOLUTION: On the basis of 'height of object to be displayed' and 'distance between the relevant object and the position of the viewpoint', it is previously judged whether or not the relevant object is to be displayed. Namely, concerning all buildings 25 belonging to the range from a present car position 21 to an inner circle 22, only buildings higher than middle rise among buildings 26 belonging to the range between the inner circle 22 and a middle circle 23 and only buildings higher than high rise among buildings 27 belonging to the range between the middle circle 23 and an outer circle 24, data are sent to a display device 16.
COPYRIGHT: (C)2001,JPO

Description

【発明の詳細な説明】 DETAILED DESCRIPTION OF THE INVENTION

【0001】 [0001]

【発明の属する技術分野】本発明は、車を経路案内するカーナビゲーション装置の表示装置のうち、3次元立体を用いて建物を表示するものに関する。 The present invention relates, among the display device of the car navigation device that guides the path of the car, about what to display the building by using a three-dimensional.

【0002】 [0002]

【従来の技術】従来のカーナビゲーションの表示装置は、本などで出版されている地図を電子的に置き換えたものに現在位置を表示したり、目的地までの経路を地図上に重ね合わせ描画し、経路案内する。 BACKGROUND OF THE INVENTION display device of a conventional car navigation, a map has been published book, such as to view the current position to that replaced electronically, for a route to a destination and draw superimposed on the map , the route guidance. この地図を画面上に表示する際に、進行方向を上方にしたり、2次元の地図を斜め上方からの視点で眺めた鳥瞰表示するなどの工夫がされている。 When displaying the map on the screen to the traveling direction upward and a two-dimensional map to be equipped with bird's eye view as viewed from the perspective of obliquely upward.

【0003】更には、鳥瞰表示ではなく、車の視点からの映像を作るために、ビルなどの建物を立体表示し、画面と車のフロントウインドウからみた視界とをなるべく同じにするような新しいナビゲーション画像を提供するカーナビゲーション装置が出てきている。 [0003] Furthermore, instead of a bird's eye display, in order to make the video from the car point of view, the three-dimensional display of the building such as a building, new navigation, such as that in as much as possible the same and the field of view as seen from the front window of the screen and the car car navigation devices are coming out to provide an image.

【0004】 [0004]

【発明が解決しようとする課題】しかし、このような3 The object of the invention is to be Solved However, such 3
次元立体で建物を表示する際、都会のようにビルが重なり合うように立っている中に相当遠方にいたるまでの建物を表示しなければならない場合には、膨大な描画性能が必要となってしまう。 When displaying the buildings dimensions solid, when it is necessary to view the building up to the equivalent far in standing as buildings overlap as urban is enormous drawing performance becomes necessary . 3次元グラフィックスの画像表示には平均で1画面の3倍の表示能力を要するが、街中の建物を車の視点で描画するためには、1画面の20倍から30倍の描画性能を持つものでなければ表示することが不可能であった。 The three-dimensional graphics image display requires three times the display capability of one screen on average, but in order to render the building in the city in a car viewpoint has a drawing performance of 30 times 20 times for one screen it was not possible to display long as it does not.

【0005】本発明はこのような課題を解決するものであり、通常の3次元グラフィックスの描画性能でも、ビルが立ち並ぶ中の3次元地図表示を行うことができる。 [0005] The present invention has been made to solve such a problem, in conventional three-dimensional graphics rendering performance, it is possible to perform three-dimensional map display in the building lined.

【0006】 [0006]

【課題を解決するための手段】上記課題を解決するために、本発明は、「表示する物体の高さ」と、「当該物体と視点位置との距離」とに基づき画像として当該物体を表示するしないを予め判断し、表示装置を制御することによって、無駄な描画を止めることで高速に描画することができる。 In order to solve the above problems SUMMARY OF THE INVENTION The present invention includes a "height of the object to be displayed", the object as an image on the basis of the "distance between the object and the viewpoint position" display not previously determined to, by controlling the display device, it can be drawn at high speed by stopping the useless drawing.

【0007】 [0007]

【発明の実施の形態】以下に、本発明の一実施形態について図面を参照して説明する。 DETAILED DESCRIPTION OF THE INVENTION Hereinafter, will be described with reference to the accompanying drawings, an embodiment of the present invention. なお、以下では、物体として建物を想定した説明を行う。 In the following, a description on the assumption building as an object.

【0008】図1は、本発明の一実施形態の構成を示す図である。 [0008] Figure 1 is a diagram showing a configuration of an embodiment of the present invention. 11は建物毎に位置、形状、高さのデータ、 11 position for each building, shape, height data,
道路の位置、形状のデータなどを持っている地図データ記憶装置である。 Position of the road, a map data storage device to have such shape data. また、建物や道路データには、各々常時表示すべきものであることを示す、常時表示フラグデータを有する。 Moreover, the buildings and road data, indicating that those to be displayed each always have a constant display flag data.

【0009】12は表示のための視点位置を算出する位置情報出力手段で、カーナビゲーション装置ではGPS [0009] 12 is a position information output means for calculating a viewpoint position for display, GPS is a navigation device
から現在位置を算出することができ、他には、マニュアルで位置情報を入力するようにも構成できる。 From it is possible to calculate the current position, the other can also be configured to enter the location information manually.

【0010】13は位置情報出力手段12から得られる視点位置から事実上見ることができる範囲の建物や道路のデータを地図データ記憶装置11から取得する地図データ読みだし装置である。 [0010] 13 is a device reading the map data to get the range of buildings and road data that can be seen virtually from the viewpoint position obtained from the position information output section 12 from the map data storage device 11. 例えば、所定距離以上遠方の建物は事実上見ることができないものとして、読み出し範囲外となる。 For example, the predetermined distance or more distant buildings as you can not see virtually the read range.

【0011】14は地図データ読み出し装置13で読み出された建物の位置データと位置情報出力手段12からの視点の位置データから相互の距離を計算する距離算出装置である。 [0011] 14 is the distance calculation device for calculating a distance from the position data of the mutual point of view from the map data reading device location data and the position information output section 12 of the building read 13. 例えば、両二次元座標値からその間の直線距離を算出して求めれば良い。 For example, from both the two-dimensional coordinates may be determined by calculating the meantime linear distance.

【0012】15は距離算出装置14で算出された建物と視点との距離と、建物自体の高さのデータから、まず距離に基づき、建物が視点から近傍にあるかどうかを判定し、近傍の建物はすべて表示するために後述する表示装置16に建物データを送り、一方遠方の場合には、更に高さに基づき遠方の建物は高さと視点からの距離に応じて表示するしないを判定し、表示する物体だけを表示装置16に指定する建物選択装置である。 [0012] 15 and the distance between the building and the viewpoint calculated by the distance calculation unit 14, from the height data of the building itself, based firstly on the distance, the building is determined whether a proximity from the point of view, in the vicinity building sends building data to the display device 16 to be described later to display all, whereas in the case of distant, determines a city to be displayed in accordance with the distance from the height and viewpoint distant buildings based on further height, a building selector specified only on the display device 16 an object to be displayed. 詳細は後述するが、視点からの距離区分によって表示対象とする建物の高さを指定することができる。 Although details will be described later, it is possible to specify the height of the building to be displayed by the distance segment from the viewpoint.

【0013】16は建物選択装置15で表示するように選択された建物データを表示する表示装置である。 [0013] 16 indicates a display unit for displaying the selected building data to be displayed in buildings selector 15.

【0014】図2は、本発明の一実施形態における処理概要を説明する概念図である。 [0014] Figure 2 is a conceptual diagram illustrating the processing outline of an embodiment of the present invention. 図2において、視点となるべき自車位置が21であるとき、自車位置21からの距離に応じてこの距離以下ならばすべての建物を表示する内円22、ある程度離れるため内円22よりも遠くこの距離以下なら中層以上の建物を表示する中円23、これ以上遠くならば建物を表示しないがこの距離以下で中円以上なら高層ビルのみ表示する外円24である。 2, when the vehicle position to the viewpoint is 21, among the circle 22 for displaying all of the building if the distance below according to the distance from the vehicle position 21, than the inner circle 22 to leave some extent far Chuen 23 to display the distance less than if the middle class more than a building, but does not display the building if the more distant is the outer circle 24 to display only high-rise buildings if more than medium-yen less than this distance. また、内円22内には建物25が属し、内円22と中円2 In addition, building 25 belong to the inner circle in the 22, middle and inner circle 22 circle 2
3の間には建物26が属し、外円24と中円23の間には建物27が属するものとする。 3 Building 26 belongs between, between the outer circle 24 and the middle circle 23 it is assumed that the building 27 belongs.

【0015】図3は、一実施形態の動作を説明するフローチャートである。 [0015] Figure 3 is a flowchart for explaining the operation of an embodiment.

【0016】以上の図1、図2、図3を用いて一実施形態を説明する。 The above Figure 1, Figure 2, describing one embodiment with reference to FIG. 自車が図2のように存在する際に、3次元立体で町の中を表示するために、自車位置21のデータを位置情報出力手段12を用いて計測し、地図読みだし装置13に位置データとして出力する(301)と、 When the vehicle is present as in Figure 2, in order to display in the city with three-dimensional, the data of the vehicle position 21 is measured by using the position information output section 12, the device 13 reads map and outputs it as position data and (301),
地図読みだし装置13は自車位置21から外円24までの建物25、建物26、建物27のデータを地図データ記憶装置11から読み出してくる(302)。 Map readout device 13 building 25 from the vehicle position 21 to the outer circle 24, building 26, the data of the building 27 come read from the map data storage device 11 (302).

【0017】読み出された建物データは距離算出装置1 [0017] The building data read out the distance calculating device 1
4に送られ建物データの位置データから、自車位置21 From the position data sent building data to 4, the vehicle position 21
と建物間の距離を算出する(303)。 And calculates the distance between buildings (303). 常時表示フラグが立っている場合には、無条件で当該建物は表示対象として選択される(304)。 If the constant display flag is set, the building unconditionally is selected for viewing (304).

【0018】次に建物データと自車位置21建物の距離のデータは建物選択装置15に送られ、建物データの高さデータと自車位置21建物間の距離から(305)、 [0018] Then the data of the distance of the building data and vehicle position 21 the building is sent to building selection device 15, the distance between the building data height data and vehicle position 21 building (305),
内円22内に属する建物25は全て表示装置16に送られ(308)、内円22と中円23の間に属する建物2 Building 25 belonging to the inner circle 22 is sent to all the display device 16 (308), belongs to between the middle circle 23 and inner circle 22 Building 2
6は中層以上の建物のみ(306)データが送られ、中円23と外円24の間に属する建物27は高層以上の建物のみ(307)データが表示装置16に送られる。 6 is sent only (306) data over a building middle layer building 27 belonging between middle circle 23 and outer circle 24 rise above the building only (307) data is sent to the display device 16. 表示装置16では建物を視点からみた3次元立体表示を行いより車のドライバーから見た目に近い画像を表示することができる。 Image close to the eye from a more car drivers carried out a three-dimensional display as seen from the point of view of the building in the display device 16 can be displayed.

【0019】なお、図3の303以下の処理は、各建物毎に処理するように制御される。 [0019] Incidentally, 303 and thereafter in FIG. 3 is controlled so as to process each building.

【0020】 [0020]

【発明の効果】以上のように本発明では、建物の高さと、視点と建物の距離を使い、表示する建物を選択して描画することにより、ナビゲーションに必要な建物を描画しかつ近傍をも詳細に表示することができる。 In the present invention as described above, according to the present invention, the building height, using the distance of the viewpoint and the building, by drawing by selecting the building to be displayed, also drawn and near buildings necessary for navigation it can be displayed in detail.

【0021】特に、現実に自動車を運転する際に目視確認し易いために目印となることの多い「高さが際立って高い建造物」については、視点からの距離が相当に遠い場合であっても表示をさせるように制御することができ、カーナビゲーションの用途に促した自然かつ有効な表示が行える。 [0021] Particularly, in reality about which often serves as a mark for easily visually confirm when driving a car "height strikingly high buildings" is the case is considerably long distance from the view point can also be controlled to the display, enabling a natural and effective display urged car navigation applications.

【図面の簡単な説明】 BRIEF DESCRIPTION OF THE DRAWINGS

【図1】本発明の一実施形態における構成図 Configuration diagram of an embodiment of the invention; FIG

【図2】本発明の一実施形態を説明する概念図 Conceptual view illustrating an embodiment of the present invention; FIG

【図3】本発明の一実施形態の動作を説明するフローチャート Flowchart illustrating operation of one embodiment of the present invention; FIG

【符号の説明】 DESCRIPTION OF SYMBOLS

11 地図データ記憶装置 12 位置情報出力装置 13 地図データ読みだし装置 14 距離算出装置 15 建物選択装置 16 表示装置 21 自車位置 22 内円 23 中円 24 外円 25,26,27 建物 11 map data storage unit 12 the position information output device 13 the map data readout device 14 distance calculation unit 15 buildings selector 16 display device 21 the vehicle position 22 in the £ 23 in £ 24 outer circle 25, 26, 27 building

Claims (5)

    【特許請求の範囲】 [The claims]
  1. 【請求項1】物体の位置データと高さデータとを対応付けた地図データを記憶する地図データ記憶装置と、 前記地図データ上の視点座標を出力する位置情報出力装置と、 前記位置情報出力装置が出力した視点座標から地図データを取り出す地図データ読み出し装置と、 前記地図データ読み出し装置から得られた物体の位置データと視点座標の距離を算出する距離算出装置と、 前記読み出した物体の高さデータと、前記算出した距離に基づき表示する物体を選択する物体選択手段と、 前記選択された物体を表示する表示装置を有する3次元地図表示装置。 1. A map data storage device for storing map data which associates the position data and height data of the object, and positional information output device for outputting the viewpoint coordinates on the map data, the position information output device the map data reading device and, a distance calculating device which calculates the distance of the position data and the viewpoint coordinates of the object obtained from said map data reading device, the read object height data but to retrieve the map data from the output to the viewpoint coordinate When, three-dimensional map display device having an object selection means for selecting an object to be displayed based on the distance that the calculated, a display device for displaying the selected object.
  2. 【請求項2】前記物体選択手段は物体と視点との距離を数段階に分けその段階と距離に応じて物体を選択する請求項1記載の3次元地図表示装置。 Wherein said object selecting means three-dimensional map display device according to claim 1, wherein selecting an object in accordance with the steps and the distance divided distance between the object and the viewpoint in several stages.
  3. 【請求項3】地図データ記憶装置に記憶させる地図の物体の高さデータを予め数段階に場合分けしたデータを記憶しておく請求項1又は2記載の3次元地図表示装置。 3. A map data storage device three-dimensional map display device according to claim 1 or 2, wherein storing the divided data if the advance number step height data of the object map to be stored in.
  4. 【請求項4】地図データ記憶装置に記憶させる地図の物体データに常時表示フラグを持ち、そのフラグが立っている場合には視点との距離や高さに関係せず常に表示させる請求項3記載の3次元地図表示装置。 4. have a constant display flag on the object data of the map to be stored in the map data storage device, according to claim 3, wherein the to always appear not related to the distance and height of the viewpoint if the flag is set 3-dimensional map display device.
  5. 【請求項5】距離算出装置は視点と物体の距離だけでなく視点からみた建物ベクトルをも算出し、物体選択装置では物体と視点との距離、建物の高さ、視点ベクトルと視点建物ベクトルから表示する建物を選択する請求項1 5. The distance calculating apparatus also calculates a building vector from the viewpoint not only the distance of the viewpoint and the object, the distance between the object and the viewpoint in the object selecting device, the building height, the viewpoint vector and the viewpoint buildings vector claim 1 for selecting the building to be displayed
    記載の3次元地図表示装置。 3-dimensional map display device as claimed.
JP34846099A 1999-12-08 1999-12-08 Three-dimensional map display device Pending JP2001167288A (en)

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US8645826B2 (en) 2001-10-15 2014-02-04 Apple Inc. Graphical multidimensional file management system and method
US8893046B2 (en) 2001-10-15 2014-11-18 Apple Inc. Method of managing user-selectable elements in a plurality of directions
US8904281B2 (en) 2001-10-15 2014-12-02 Apple Inc. Method and system for managing multi-user user-selectable elements
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JP2007132972A (en) * 2005-11-08 2007-05-31 Sony Corp Information processor, information processing method, and program
US7974781B2 (en) 2006-06-30 2011-07-05 Aisin Aw Co., Ltd. Navigation apparatuses, methods, and programs for generation of a 3D movie
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