JP4472423B2 - Navigation device - Google Patents

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JP4472423B2
JP4472423B2 JP2004146014A JP2004146014A JP4472423B2 JP 4472423 B2 JP4472423 B2 JP 4472423B2 JP 2004146014 A JP2004146014 A JP 2004146014A JP 2004146014 A JP2004146014 A JP 2004146014A JP 4472423 B2 JP4472423 B2 JP 4472423B2
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building
polygon
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display
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JP2005326716A (en
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和昭 高橋
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Alpine Electronics Inc
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Description

本発明はナビゲーション装置に係わり、特に、建物の底面ポリゴン形状、建物の高さを含む建物データを地図情報に含ませておき、該建物データを用いて建物を三次元立体表示するナビゲーション装置に関する。 The present invention relates to a navigation device, in particular, the bottom surface polygon shape of the building, building data including the height of the building were allowed included in the map information, a navigation device for three-dimensional view the building using該建product data.

ナビゲーション装置には所定の視点位置からみた時の車両前方の風景を三次元立体表示する機能がある(たとえば特許文献1参照)。視点位置は、例えば車両後方所定の高さ位置、あるいは運転者の目の位置である。図9はかかる三次元立体表示例であり、車両後方所定の高さ位置を視点として眺めた場合である。建物の立体表示の方法は、図10(A)に示すように、建物データBLDTで、建物の底面ポリゴンPLの中心位置(例えば重心)、ポリゴン形状、建物高さ、ポリゴン/ラインの種別、色等を特定し、これらのデータを用いて図10(B)に示すようにポリゴン形状を建物高さ分立ち上げることにより行なう。
立体表示する建物は、車両位置マークCMKで示される車両位置と建物中心位置間の進行方向の距離が設定値以上の建物であり、該距離が設定値より小さくなれば、図11に示すように図9で表示していた建物BLDの立体表示を終了し、代わって建物底面図BLD′を表示する。これは、建物が車両に接近しすぎると地図、特に道路や誘導経路が該建物に隠れてしまうのを回避するためである。
The navigation device has a function of three-dimensionally displaying a landscape in front of the vehicle when viewed from a predetermined viewpoint position (see, for example, Patent Document 1). The viewpoint position is, for example, a predetermined height position behind the vehicle or the position of the driver's eyes. FIG. 9 shows an example of such a three-dimensional stereoscopic display, in which the vehicle is viewed from a predetermined height position behind the vehicle. As shown in FIG. 10A, the three-dimensional display method of the building is the building data BLDT, the center position (for example, the center of gravity) of the bottom polygon PL of the building, the polygon shape, the building height, the polygon / line type, the color. Etc., and by using these data, the polygon shape is raised by the height of the building as shown in FIG.
The three-dimensionally displayed building is a building in which the distance in the traveling direction between the vehicle position indicated by the vehicle position mark CMK and the building center position is equal to or larger than a set value, and if the distance becomes smaller than the set value, as shown in FIG. The three-dimensional display of the building BLD displayed in FIG. 9 is terminated, and the building bottom view BLD ′ is displayed instead. This is to avoid hiding a map, particularly a road or a guide route, if the building is too close to the vehicle.

ところで、図12に示すように建物の底面ポリゴン形状が複数の図葉(メッシュ)MPL1、MPL2に跨ることがある。かかる場合、該底面ポリゴンPLを図葉境界線MBLで分割し、各図葉の建物データで、分割ポリゴンPL1,PL2の形状、建物の高さ、各分割ポリゴンの中心位置C1,C2を特定し、これら各図葉の建物データを用いて各ポリゴン形状を建物高さ分立ち上げることにより立体表示を行なう。
特開平9−171348号公報
By the way, as shown in FIG. 12, the bottom polygon shape of a building may straddle a plurality of leaf (mesh) MPL1 and MPL2. In such a case, the bottom polygon PL is divided by the leaf boundary MBL, and the shape of the divided polygons PL1 and PL2, the height of the building, and the center positions C1 and C2 of the divided polygons are specified by the building data of each leaf. The three-dimensional display is performed by raising each polygon shape by the height of the building using the building data of each figure.
JP-A-9-171348

しかし、従来の立体表示方法では、複数の図葉にまたがる建物ポリゴンPL1,PL2が存在する場合、分割された各々の建物ポリゴンの中心点C1,C2は互いに異なる。このため、ポリゴン毎に立体表示を消去するタイミングが異なる。その結果、図13に示すように矢印A方向から建物に接近すると、手前の建物ポリゴンPL1に応じた立体表示が底面図表示に切り替わり、建物ポリゴンPL2に応じた立体表示だけが残って表示される。すなわち、従来方法では、建物の一部が表示されたり、一部だけが消えたりする現象が発生する問題がある。図14は実際の表示例であり、建物BLDの底面ポリゴンが2つの図葉に跨っている場合であり、建物BLDから車両が離れている場合には、(A)に示すように建物BLDの全体が立体表示されている。しかし、車両が建物BLDに接近すると、(B)に示すように建物BLDの一部手前部分の立体表示が消え、残りの部分BLD2が立体表示され続ける。(C)に消えた一部建物部分BLD1の外形示す。   However, in the conventional stereoscopic display method, when there are building polygons PL1 and PL2 extending over a plurality of figure leaves, the center points C1 and C2 of the divided building polygons are different from each other. For this reason, the timing for erasing the stereoscopic display is different for each polygon. As a result, when approaching the building from the direction of arrow A as shown in FIG. 13, the stereoscopic display corresponding to the building polygon PL1 in front is switched to the bottom view display, and only the stereoscopic display corresponding to the building polygon PL2 remains and is displayed. . That is, the conventional method has a problem that a part of the building is displayed or a part of the building disappears. FIG. 14 is an actual display example, in which the bottom polygon of the building BLD straddles two map leaves. When the vehicle is away from the building BLD, as shown in FIG. The whole is displayed in 3D. However, when the vehicle approaches the building BLD, as shown in (B), the three-dimensional display of the front part of the building BLD disappears and the remaining part BLD2 continues to be three-dimensionally displayed. (C) shows the outline of the part of the building BLD1 that disappeared.

以上の従来技術の表示方法では、立体表示されている建物部分BLD2は実在しない形状であるため不自然であり、しかも、実際の風景と異なるためナビゲーションする上で好ましくない問題がある。
この問題を回避するためには、各々の建物ポリゴンが分割されたものかどうかの判断処理と、もしも分割された建物ポリゴンであるなら分断された他の建物ポリゴンを検索する処理、及び、分断された全ての建物ポリゴンを合わせて中心点を求める処理等煩雑な処理が必要となり、地図描画速度が低下する。
以上から本発明の目的は、建物の一部立体表示が消え、残りの部分が立体表示されるという不具合を解決することである。
本発明の別の目的は、簡単な処理で、且つ、高速に、上記不具合をなくせるようにすることである。
本発明の別の目的は、建物の底面ポリゴンが複数の図葉に跨って存在する場合の立体表示において、図葉境界線に応じた建物分割線が表示されないようにすることである。
In the above conventional display methods, the three-dimensionally displayed building part BLD2 is unnatural because it has a nonexistent shape, and it is not preferable for navigation because it differs from the actual landscape.
In order to avoid this problem, it is possible to determine whether each building polygon is divided, to search for another divided building polygon if it is a divided building polygon, and to be divided. In addition, complicated processing such as processing for obtaining the center point by combining all building polygons is required, and the map drawing speed is reduced.
From the above, an object of the present invention is to solve the problem that a part of a building is displayed in three dimensions and the remaining part is displayed in three dimensions.
Another object of the present invention is to eliminate the above-mentioned problems with a simple process and at a high speed.
Another object of the present invention is to prevent a building dividing line corresponding to a leaf boundary line from being displayed in a three-dimensional display in a case where a bottom polygon of a building exists across a plurality of leaf leaves.

上記課題は本発明によれば、建物の底面ポリゴン形状、建物の高さ、建物全体の位置を示す代表点位置を含む建物データを地図情報に含ませておき、該建物データを用いて建物を三次元立体表示すると共に、車両位置と代表点位置間の距離が設定距離以下になった建物の立体表示を終了するナビゲーション装置において、建物の底面ポリゴン形状が複数の図葉に跨る場合、該ポリゴン形状を図葉境界線で分割してなる分割ポリゴンの形状、建物の高さ、建物全体の位置を示す代表点位置を含む建物データで各図葉に属する建物部分を特定してなる地図情報を保持する手段、車両位置を検出する手段、車両位置と各建物部分の代表点位置間の距離が設定距離以下になったか監視する監視手段、前記各図葉の建物部分の建物データを用いて複数の図葉に跨る建物を立体表示している時、車両位置と代表点位置間の距離が設定距離以下になった建物部分の立体表示を終了することにより、建物全体の立体表示を終了する表示制御手段を備えたナビゲーション装置により達成される。According to the present invention, according to the present invention, building data including a bottom polygon shape of a building, a height of the building, and a representative point position indicating the position of the entire building is included in the map information, and the building is created using the building data. In a navigation device that displays a three-dimensional display and ends the three-dimensional display of the building in which the distance between the vehicle position and the representative point position is equal to or less than the set distance, when the bottom polygon shape of the building spans multiple leaves, the polygon Map information that identifies the building part belonging to each leaf with building data that includes the shape of the polygon that is divided by the leaf boundary, the height of the building, and the representative point position that indicates the position of the entire building. A means for holding, a means for detecting the vehicle position, a monitoring means for monitoring whether the distance between the vehicle position and the representative point position of each building part is equal to or less than a set distance, and a plurality of data using the building data of the building parts in each of the figures of Display control means for ending the three-dimensional display of the entire building by ending the three-dimensional display of the building portion where the distance between the vehicle position and the representative point position is equal to or less than the set distance when three-dimensionally displaying the building straddling the leaves This is achieved by a navigation device equipped with

本発明によれば、建物の底面ポリゴン形状が複数の図葉に跨る場合、該ポリゴン形状を図葉境界線で分割してなる分割ポリゴン形状、建物の高さ、建物全体の位置を示す代表点位置を含む建物データで各図葉に属する建物部分を特定し、車両が建物に接近して車両位置と前記代表点位置との関係が予め設定されている関係になったとき、該建物全体の立体表示を終了するようにしたから、建物の一部立体表示が消え、残りの部分が立体表示され続けるという不具合がなくせ、しかも、簡単な処理で、且つ、高速に、不具合をなくすことができる。
また、本発明によれば、建物の底面ポリゴンが複数の図葉に跨って存在する場合の立体表示において、図葉境界線に応じた建物分割線を消去することができる。
According to the present invention, when the bottom polygon shape of a building extends over a plurality of leaves, the divided polygon shape obtained by dividing the polygon shape by a leaf boundary line, the height of the building, and the representative points indicating the position of the entire building When the building data that includes the position identifies the building part belonging to each leaf and the vehicle approaches the building and the relationship between the vehicle position and the representative point position is set in advance, the entire building Since the 3D display is finished, it is possible to eliminate the problem that the 3D display of a part of the building disappears and the remaining part continues to be displayed in 3D, and the problem can be eliminated with simple processing and at high speed. .
Further, according to the present invention, in the stereoscopic display in the case where the bottom polygon of the building exists across a plurality of leaflets, the building dividing line corresponding to the leafline boundary can be deleted.

地図データベースに格納された全ての建物ポリゴンデータに、分割される前の建造物ポリゴンの中心点座標を付加する。ナビゲーション装置は地図データベースに格納された分割される前の建造物ポリゴンの中心点座標を用いて、その建物を消去すべきかどうか判断する。   The center point coordinates of the building polygons before being divided are added to all building polygon data stored in the map database. The navigation device determines whether or not the building should be deleted using the center point coordinates of the building polygons before being divided stored in the map database.

図1は本発明の説明図である。建物の底面ポリゴンPLが複数の図葉MPL1,MPL2に跨る場合、該ポリゴン形状を図葉境界線MBLで分割してなる分割ポリゴンPL1,PL2の形状、建物の高さ、建物の代表点Cを含む建物ポリゴンデータPDT1,PDT2で各図葉に属する建物部分を特定する。なお、建物の代表点Cは、建物の底面ポリゴンPLの中心、例えば重心である。
すなわち、図2(A)に示すように、図葉MPL1の建物ポリゴンデータPDT1は、分割ポリゴンPL1の形状、建物の高さ、底面ポリゴンPLの中心Cの位置データを含むが、分割ポリゴンPL1の中心Aの位置データは含まない。また、建物ポリゴンデータPDT1は、上記データの他に、ポリゴン/ラインの種別、色等の属性データを含んでいる。一方、図葉MPL2の建物ポリゴンデータPDT2は、分割ポリゴンPL2の形状、建物の高さ、底面ポリゴンPLの中心Cの位置データを含むが、分割ポリゴンPL2の中心Bの位置データは含まない。また、建物ポリゴンデータPDT2は、上記データの他に、ポリゴン/ラインの種別、色等の属性データを含んでいる。
FIG. 1 is an explanatory diagram of the present invention. When the bottom polygon PL of a building extends over multiple leaf MPL1 and MPL2, the shape of the divided polygons PL1 and PL2, the height of the building, and the representative point C of the building obtained by dividing the polygon shape by the leaf boundary MBL The building part belonging to each leaf is specified by the building polygon data PDT1 and PDT2 to be included. The representative point C of the building is the center of the bottom polygon PL of the building, for example, the center of gravity.
That is, as shown in FIG. 2A, the building polygon data PDT1 of the leaf MPL1 includes the shape of the divided polygon PL1, the height of the building, and the position data of the center C of the bottom polygon PL. The position data of the center A is not included. In addition to the above data, the building polygon data PDT1 includes attribute data such as polygon / line type and color. On the other hand, the building polygon data PDT2 of the figure MPL2 includes the shape of the divided polygon PL2, the height of the building, and the position data of the center C of the bottom polygon PL, but does not include the position data of the center B of the divided polygon PL2. The building polygon data PDT2 includes attribute data such as polygon / line type and color in addition to the above data.

図3は、本発明の立体表示説明図であり、建物BLDの底面ポリゴン形状が図1に示すように2つの図葉MPL1,MPL2に跨る場合である。(A)に示す状態から車両が建物BLDに接近して車両位置とポリゴンデータPDT1,PDT2に含まれる建物底面ポリゴンPLの中心点Cとの間の距離が設定距離以下になると、(A)から(B)に表示が変化し、分割ポリゴンPL1,PL2に応じた立体表示が終了し、すなわち、建物BLDの立体表示が終了し、立体表示から平面形状BLDAの表示に切り替わる。   FIG. 3 is an explanatory diagram of stereoscopic display according to the present invention, and shows a case where the bottom polygon shape of the building BLD extends over two map leaves MPL1 and MPL2 as shown in FIG. When the vehicle approaches the building BLD from the state shown in (A) and the distance between the vehicle position and the center point C of the building bottom polygon PL included in the polygon data PDT1 and PDT2 is equal to or less than the set distance, from (A) The display changes to (B), and the three-dimensional display corresponding to the divided polygons PL1 and PL2 is finished, that is, the three-dimensional display of the building BLD is finished, and the display is switched from the three-dimensional display to the display of the planar shape BLDA.

図4は本発明のナビゲーション装置の要部構成図であり、地図記憶メモリ51には車両位置周辺の複数の図葉データ(地図データ)が図示しないDVD等の地図データべース手段から読み出されて記憶されている。誘導経路メモリ52にはナビゲーション装置の経路探索機能により探索された目的地までの誘導経路情報が保存されている。自車位置検出部53はGPSなどにより自車位置を検出して出力する。三次元地図描画部54は、地図記憶メモリ51に読み出されている図葉データ及び誘導経路情報に基づいて三次元地図を発生し、車両マーク発生部55は車両位置マークを発生し、合成部56は三次元地図画像と車両位置マークを合成してモニター57に表示する。   FIG. 4 is a block diagram of the main part of the navigation apparatus according to the present invention. A plurality of map data (map data) around the vehicle position is read from a map data base means such as a DVD (not shown) in the map storage memory 51. Has been remembered. The guide route memory 52 stores guide route information to the destination searched by the route search function of the navigation device. The own vehicle position detection unit 53 detects and outputs the own vehicle position by GPS or the like. The three-dimensional map drawing unit 54 generates a three-dimensional map based on the leaf data and the guidance route information read out to the map storage memory 51, the vehicle mark generation unit 55 generates a vehicle position mark, and a combining unit 56 synthesizes the 3D map image and the vehicle position mark and displays them on the monitor 57.

図5は三次元地図描画部54の三次元地図描画処理フローである。
三次元地図描画部54は、地図情報を用いて三次元立体画像を発生してモニターに表示する(ステップ101)。ついで、各建物ポリゴンデータに含まれるポリゴン中心位置と車両位置間の距離を計算し(ステップ102)、建物までの距離が設定距離以下になったか、すなわち、建物に接近したかチェックし(ステップ103)、設定距離以下にならなければステップ101以降の処理を繰返す。しかし、所定の建物のポリゴン中心と車両位置間の距離が設定距離以下になれば、該ポリゴンに応じた立体表示を終了し、底面図表示に切り替える。すなわち、建物ポリゴンデータに立体非表示フラグを追加する(ステップ104)。
ついで、始めに戻り、以後、立体非表示フラグが付加されているポリゴンは立体表示せず、底面図表示する。
以上により、建物の底面ポリゴンPLが図1に示すように複数の図葉に存在する場合でも、各図葉の建物ポリゴンデータPDT1,PDT2に含まれるポリゴン中心位置データは建物全体の底面ポリゴンPLの中心Cを示しているため、同時に各分割ポリゴンPL1,PL2に応じた立体表示が終了するから、従来のように、建物の一部の立体表示が消え、残りの部分が立体表示され続けるという不具合をなくすことが可能となる。
FIG. 5 is a 3D map drawing process flow of the 3D map drawing unit 54.
The three-dimensional map drawing unit 54 generates a three-dimensional stereoscopic image using the map information and displays it on the monitor (step 101). Next, the distance between the polygon center position included in each building polygon data and the vehicle position is calculated (step 102), and it is checked whether the distance to the building is equal to or smaller than the set distance, that is, whether the building is approached (step 103). ) If the distance is not less than the set distance, the processing from step 101 is repeated. However, when the distance between the polygon center of the predetermined building and the vehicle position is equal to or less than the set distance, the stereoscopic display corresponding to the polygon is terminated and switched to the bottom view display. That is, a solid non-display flag is added to the building polygon data (step 104).
Subsequently, the process returns to the beginning, and thereafter, the polygon to which the stereoscopic non-display flag is added is not displayed stereoscopically but is displayed in a bottom view.
As described above, even when the bottom polygon PL of the building exists in a plurality of leaves as shown in FIG. 1, the polygon center position data included in the building polygon data PDT1, PDT2 of each leaf is the bottom polygon PL of the entire building. Since the center C is shown, the stereoscopic display corresponding to each of the divided polygons PL1 and PL2 is finished at the same time, so that the stereoscopic display of a part of the building disappears and the remaining part continues to be stereoscopically displayed as in the past. Can be eliminated.

図6は図1に示すように建物の底面ポリゴンPLが複数の図葉MPL1,MPL2に跨る場合、立体表示において図7(A)に示す建物分割線Lが表示されないようにする、すなわち、(B)に示すように立体表示する三次元描画処理フローである。なお、図葉MPL1,MPL2の建物ポリゴンデータPDT1,PDT2はそれぞれ図8(A)、(B)に示すように、図2(A)、(B)に示す情報の他に、分割ポリゴンであるかを示す分割フラグ、ポリゴン形状のどこが分割線(図葉境界線)であるかを特定する分割線特定データを有している。   FIG. 6 shows that the building dividing line L shown in FIG. 7A is not displayed in the three-dimensional display when the bottom polygon PL of the building straddles a plurality of leaf MPL1 and MPL2 as shown in FIG. It is a three-dimensional drawing process flow for stereoscopic display as shown in B). Note that the building polygon data PDT1 and PDT2 of the leaves MPL1 and MPL2 are divided polygons in addition to the information shown in FIGS. 2A and 2B, respectively, as shown in FIGS. And a dividing line specifying data for specifying which part of the polygon shape is a dividing line (foliage boundary line).

三次元地図描画部54は、三次元表示に際して、立体非表示フラグが付いていないポリゴンを検索し(ステップ101a)、該ポリゴンが分割ポリゴンであるか判別する(ステップ101b)。分割ポリゴンでなければポリゴンデータを用いて建物の立体表示をする(ステップ101c)。しかし、分割ポリゴンの場合には、分割線特定データを参照して、建物分割線を削除して建物の立体表示をする(ステップ101d)。以上では、立体表示において建物分割線を削除した場合であるが、底面ポリゴン形状を表示する場合も同様に建物分割線を削除して表示する。
以上本発明によれば、建物の一部立体表示が消え、残りの部分が立体表示され続けるという不具合をなくせ、しかも、簡単な処理で、且つ、高速に、不具合をなくすことができる。また、本発明によれば、建物の底面ポリゴンが複数の図葉に跨って存在する場合の立体表示において、図葉境界線に応じた建物分割線を消去することができる。
The three-dimensional map drawing unit 54 searches for a polygon without a three-dimensional non-display flag in three-dimensional display (step 101a) and determines whether the polygon is a divided polygon (step 101b). If it is not a divided polygon, the building is stereoscopically displayed using polygon data (step 101c). However, in the case of a divided polygon, the building dividing line is deleted with reference to the dividing line specifying data, and the building is displayed three-dimensionally (step 101d). In the above, the building dividing line is deleted in the stereoscopic display, but the building dividing line is deleted and displayed in the same manner when the bottom polygon shape is displayed.
As described above, according to the present invention, it is possible to eliminate the inconvenience that a part of the building is displayed in 3D and the remaining part is continuously displayed in 3D, and it is possible to eliminate the problem with a simple process and at high speed. Further, according to the present invention, in the stereoscopic display in the case where the bottom polygon of the building exists across a plurality of leaflets, the building dividing line corresponding to the leafline boundary can be deleted.

本発明の説明図である。It is explanatory drawing of this invention. 建物の底面ポリゴンPLが複数の図葉MPL1,MPL2に跨る場合における建物ポリゴンデータPDT1,PDT2の説明図である。It is explanatory drawing of the building polygon data PDT1 and PDT2 in case the bottom face polygon PL of a building straddles several figure leaf MPL1, MPL2. 本発明の立体表示説明図である。It is a three-dimensional display explanatory drawing of this invention. 本発明のナビゲーション装置の要部構成図である。It is a principal part block diagram of the navigation apparatus of this invention. 三次元地図描画部の三次元地図描画処理フローである。It is a 3D map drawing process flow of a 3D map drawing part. 建物分割線Lが表示されないように立体表示する三次元描画処理フローである。It is a three-dimensional drawing process flow for stereoscopic display so that the building dividing line L is not displayed. 図6の処理説明図である。FIG. 7 is a process explanatory diagram of FIG. 6. 建物分割線Lが表示されないように立体表示するためのポリゴンデータ説明図である。It is polygon data explanatory drawing for carrying out a three-dimensional display so that the building dividing line L may not be displayed. 三次元立体表示例である。It is an example of a three-dimensional solid display. 建物の立体表示の方法説明図である。It is explanatory drawing of the method of the three-dimensional display of a building. 建物の立体表示を終了し、代わって建物底面図を表示した場合の表示例である。It is a display example when the three-dimensional display of the building is terminated and a bottom view of the building is displayed instead. 建物の底面ポリゴン形状が複数の図葉(メッシュ)MPL1、MPL2に跨る場合の説明図である。It is explanatory drawing in case the bottom face polygon shape of a building straddles several figure leaf (mesh) MPL1, MPL2. 従来の建物立体表示の問題点説明図である。It is explanatory drawing of the problem of the conventional building solid display. 従来の実際の立体表示例である。It is the example of the conventional actual three-dimensional display.

符号の説明Explanation of symbols

PL 建物の底面ポリゴン
MPL1,MPL2 図葉
MBL 図葉境界線
PL1,PL2 分割ポリゴン
C 建物の代表点
PL Building bottom polygon
MPL1, MPL2 Figure leaf
MBL map leaf border
PL1, PL2 Split polygon C Building representative point

Claims (1)

建物の底面ポリゴン形状、建物の高さ、建物全体の位置を示す代表点位置を含む建物データを地図情報に含ませておき、該建物データを用いて建物を三次元立体表示すると共に、車両位置と代表点位置間の距離が設定距離以下になった建物の立体表示を終了するナビゲーション装置において、
建物の底面ポリゴン形状が複数の図葉に跨る場合、該ポリゴン形状を図葉境界線で分割してなる分割ポリゴンの形状、建物の高さ、建物全体の位置を示す代表点位置を含む建物データで各図葉に属する建物部分を特定してなる地図情報を保持する手段、
車両位置を検出する手段、
車両位置と各建物部分の代表点位置間の距離が設定距離以下になったか監視する監視手段、
前記各図葉の建物部分の建物データを用いて複数の図葉に跨る建物を立体表示している時、車両位置と代表点位置間の距離が設定距離以下になった建物部分の立体表示を終了することにより、建物全体の立体表示を終了する表示制御手段、
を備えたことを特徴とするナビゲーション装置。
The building data including the polygonal shape of the bottom of the building, the height of the building, and the representative point position indicating the position of the entire building is included in the map information, and the building is displayed in 3D using the building data, and the vehicle position In the navigation device that terminates the stereoscopic display of the building in which the distance between the representative point position is less than the set distance,
When the bottom polygon shape of a building spans multiple leaves, the building data includes the shape of a divided polygon that is obtained by dividing the polygon shape along the boundary of the leaves, the height of the building, and the representative point position that indicates the position of the entire building. Means for holding map information that identifies the building part belonging to each map leaf,
Means for detecting the vehicle position;
Monitoring means for monitoring whether the distance between the vehicle position and the representative point position of each building part is less than or equal to the set distance;
3D display of the building part where the distance between the vehicle position and the representative point position is equal to or less than the set distance when the building straddling a plurality of leaves is displayed in 3D using the building data of the building part of each figure leaf Display control means for ending the stereoscopic display of the entire building by ending,
A navigation device characterized by comprising:
JP2004146014A 2004-05-17 2004-05-17 Navigation device Expired - Lifetime JP4472423B2 (en)

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CN105339763A (en) * 2013-06-25 2016-02-17 罗伯特·博世有限公司 Method for representing objects and navigation system for carrying out the method

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JP5165851B2 (en) * 2006-04-07 2013-03-21 クラリオン株式会社 3D map display method, 3D map display device, and navigation device
JP2007292566A (en) * 2006-04-24 2007-11-08 Onepass:Kk Weather forecast display system
JP5340900B2 (en) * 2009-12-03 2013-11-13 株式会社エヌ・ティ・ティ・ドコモ Object management apparatus and object management method

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CN105339763A (en) * 2013-06-25 2016-02-17 罗伯特·博世有限公司 Method for representing objects and navigation system for carrying out the method

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