JPS62170809A - Measuring instrument for road surface - Google Patents
Measuring instrument for road surfaceInfo
- Publication number
- JPS62170809A JPS62170809A JP1103386A JP1103386A JPS62170809A JP S62170809 A JPS62170809 A JP S62170809A JP 1103386 A JP1103386 A JP 1103386A JP 1103386 A JP1103386 A JP 1103386A JP S62170809 A JPS62170809 A JP S62170809A
- Authority
- JP
- Japan
- Prior art keywords
- road surface
- video cameras
- lenses
- video camera
- laser
- Prior art date
- 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.)
- Granted
Links
- 238000005259 measurement Methods 0.000 claims description 13
- 238000004441 surface measurement Methods 0.000 claims description 6
- 238000003384 imaging method Methods 0.000 claims description 5
- 230000003287 optical effect Effects 0.000 abstract description 6
- 238000010586 diagram Methods 0.000 description 7
- 238000009434 installation Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 230000008676 import Effects 0.000 description 1
Landscapes
- Length Measuring Devices By Optical Means (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明はビデオカメラや、スチールカメラ等を用いた路
面計測装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a road surface measurement device using a video camera, still camera, or the like.
従来の技術
従来のこの種の路面計測装置として第６図（特願昭５５
−１５７８１８号公報）に示すように、路面１の凹凸量
を測定する際レーザチューブ２から発射されたレーザビ
ーム３をレーザスキャナー（回転多面鏝）４に拡げて路
面１上に照射し、そのレーザビーム３を４本のビデオカ
メラ５α、５ｂ 、５ｃ 、５ｄでとらえ測定するもの
であった。Conventional technology A conventional road surface measuring device of this type is shown in Fig. 6 (Japanese Patent Application No. 55
157818), when measuring the amount of unevenness of a road surface 1, a laser beam 3 emitted from a laser tube 2 is spread to a laser scanner (rotary polygon) 4 and irradiated onto the road surface 1. Beam 3 was captured and measured by four video cameras 5α, 5b, 5c, and 5d.
発明が解決しようとする間萌点
しかし実際測定する場合、ビデオカメラ５ａ〜５ｄの取
付位置が路面１に対して垂直な同じ高さにならずそれぞ
れが異なる取付位置になる。However, in actual measurement, the mounting positions of the video cameras 5a to 5d are not at the same height perpendicular to the road surface 1, but are at different mounting positions.
そもそも４本のビデオカメラ５ａ〜５ｄで測定する目的
は、通常１本のビデオカメラで測定するのを測定分解能
を上げる目的で４本にしたのである。In the first place, the purpose of measuring with four video cameras 5a to 5d was to increase the measurement resolution from the usual one video camera.
第７図に示すように、１本のビデオカメラ５で測定する
場合、レーザチューブ２から発射されたレーザビーム３
がレーザスキャナー４にて拡げられ、路面１上に照射さ
れたレーザビーム３をビデオカメラ５内のレンズ６を介
して撮像面７で写し出される。しかし、１横断プロフイ
ールの長が実際４７７！でビデオカメラ５の走査縁は通
常２４０本（Ｊ秒毎）となってしまうため、約１６．７
ｍ （４０００簡÷２４０本）おきのデータしか取シ
込めない。As shown in FIG. 7, when measuring with one video camera 5, the laser beam 3 emitted from the laser tube 2
is expanded by a laser scanner 4, and a laser beam 3 irradiated onto a road surface 1 is imaged on an imaging surface 7 via a lens 6 in a video camera 5. However, the length of one cross-sectional profile is actually 477! In this case, the scanning edge of the video camera 5 is normally 240 lines (every J seconds), so approximately 16.7 lines are scanned.
You can only import data every m (4000 lines ÷ 240 lines).
そのため、第９図に示すようにビデオカメラ５を１本か
ら複数にすることによシ測定分解能を上げることができ
る。しかし、ビデオカメラ５を複数にすることによシ第
１０図のモニタ８のように２つに分けて撮像させなけれ
ばならなず、そのためにはビデオカメラ５の撮像面７を
２分した面に、第１のビデオカメラ５ａは測定視野Ａ−
Ｂ間を写し出すようにセットし、第２のビデオカメラ５
ｂは測定視野Ｂ−Ｃ間を写し出すようにセットしなけれ
ばならない。Therefore, as shown in FIG. 9, the measurement resolution can be increased by increasing the number of video cameras 5 from one to a plurality. However, by using a plurality of video cameras 5, it is necessary to divide the image into two parts as shown in the monitor 8 in FIG. , the first video camera 5a has a measurement field of view A-
Set the second video camera 5 so that it shows the area between
b must be set so as to project the measurement field of view B-C.
しかし、実際光学特性上、路面１に対して垂直な位置に
取付ける場合、同じ高さの位置に取付かない。However, due to actual optical characteristics, when mounted at a position perpendicular to the road surface 1, they are not mounted at the same height.
このようにビデオカメラの取付位置がそれぞれ違うので
取付スペースが多く必要になっていたし、またそれぞれ
のテレビカメラの測定精度が異なるものになっていた。The mounting positions of the video cameras are thus different, requiring a large amount of mounting space, and the measurement accuracy of each television camera is also different.
発明の目的
本発明は上記の事情に鑑みなされたもので、複数本のビ
デオカメラを、路面に対して垂直な高さにそれぞれが異
なることなく取付けることができて取付スペースを少な
くすることができるはかシか、測定視野をとらえる際、
ビデオテレビ内のレンズの光軸でとらえることが可ＭＫ
なって測定精度を向上させることができる路面測定装置
を提供することを目的とする。Purpose of the Invention The present invention has been made in view of the above circumstances, and allows multiple video cameras to be installed at the same height perpendicular to the road surface, thereby reducing the installation space. When capturing the measurement field of view,
MK that can be captured by the optical axis of the lens in a video TV
An object of the present invention is to provide a road surface measuring device that can improve measurement accuracy.
間卸点を解決するための手段及び作用
上記の目的を達成するために本発明は、レーザチューブ
１１から発射したレーザビームをレーザスキャナー１２
で拡げて路面１０上に照射してビデオカメラで撮像する
ようにした路面測定装置において、現像面をビデオカメ
ラの台数程に区分した面に測定範囲を入れるようにビデ
オカメラ内のレンズ１６のレンズ主点を移動させる構成
にしである。Means and operation for solving the intermittent point
In the road surface measuring device which is configured to spread the light onto the road surface 10 and capture the image with a video camera, the lens 16 in the video camera is set so that the measurement range is placed on a surface that divides the developing surface into sections approximately equal to the number of video cameras. This is a configuration that moves the principal point.
実 施 例
以下、本発明の実施例を第１図乃至第５図に基いて説明
する。第１図中ＩＱは凹凸面を有する路面であり、１１
はレーザチューブ、１２はレーザスキャナー、１３は第
１のビデオカメラ、１４は第２のビデオカメラである。Embodiments Hereinafter, embodiments of the present invention will be explained based on FIGS. 1 to 5. In Figure 1, IQ is a road surface with uneven surfaces, and 11
is a laser tube, 12 is a laser scanner, 13 is a first video camera, and 14 is a second video camera.
路面１０の凹凸量を測定する際、レーザチューブ１１か
ら発射したレーザビーム１５をレーザスキャナー１２で
拡げ、これを路面 ＩＯ上に照射し、第１・第２のビデ
オカメラ１３．１４内のレンズ１６を介して撮像する。When measuring the amount of unevenness on the road surface 10, the laser beam 15 emitted from the laser tube 11 is expanded by the laser scanner 12, and is irradiated onto the road surface IO. image via.
通常ビデオカメラ等を使用する場合、第３図ａに示すよ
うに撮像面１７の中心にレンズ１６の光軸１８が位置す
るようにして使用されている。Normally, when a video camera or the like is used, the optical axis 18 of the lens 16 is positioned at the center of the imaging surface 17, as shown in FIG. 3a.
しかし、撮像面１７を２分したｌ ７ ａ、ｌ ７ ｈ
に測定範囲を入れるようにレンズ１６をそれぞれ移動（
オフセット）させてレンズ接点す、Ｃをずらせ、撮像面
１７に写し出すことによシモニタ１９にて２分し７た映
像をとらえることができる。However, l 7 a and l 7 h which divided the imaging plane 17 into two
Move each lens 16 so that the measurement range is included in (
By shifting the lens contacts (S, C) and projecting the image onto the imaging surface 17, it is possible to capture an image divided into two parts on the monitor 19.
なおビデオカメラを３本、４本と増した場合も同様に構
成すればよい。Note that the same configuration may be used when the number of video cameras is increased to three or four.
実際には第５図に示すように車輌２０の前側上部に支持
部材２１を前方に突出させて設けて、この支持部材２１
にレーザチューブ１１とレーザスキャナー１２とを設け
、車輛２０の前側下部に保持部材２２を設けて、この保
持部材２２に受光手段２３（受光素子、ビデオカメラ）
を設け、レーザチューブ１１から発射したレーザビーム
１５をレーザスキャナー１２で拡け、これを路面１０上
に照射し、受光手段２３で受光して行う。Actually, as shown in FIG. 5, a support member 21 is provided at the upper front side of the vehicle 20 so as to project forward.
A laser tube 11 and a laser scanner 12 are provided, a holding member 22 is provided at the lower front side of the vehicle 20, and a light receiving means 23 (light receiving element, video camera) is provided on this holding member 22.
A laser beam 15 emitted from a laser tube 11 is expanded by a laser scanner 12, irradiated onto the road surface 10, and received by a light receiving means 23.
発明の効果
以上詳述したように、本発明に係る路面測定装置は、レ
ーザチューブ１１から発射したレーザビームをレーザス
キャナー１２で拡けて路面１０上に照射してビデオカメ
ラで撮像するようにした路面測定装置において、現像面
をビデオカメラの台数程に区分した面に測定範囲を入れ
るようにビデオカメラ内のレンズ１６のレンズ主点を移
動させたことを特徴とするものである。Effects of the Invention As detailed above, the road surface measuring device according to the present invention is configured such that the laser beam emitted from the laser tube 11 is expanded by the laser scanner 12, irradiated onto the road surface 10, and imaged by the video camera. This road surface measuring device is characterized in that the principal point of the lens 16 in the video camera is moved so that the measurement range is included in a surface that is divided into as many areas as there are video cameras on the developing surface.
したがって、複数本のビデオカメラを、路面１０に対し
て垂直な高さにそれぞれが異なることなく取付けること
ができて取付スペースを少なくすることができるし、測
定視野をとらえる際、ビデオテレビ内のレンズ１６の光
軸でトラえることができて測定精度を向上させることが
できる。Therefore, a plurality of video cameras can be installed at the same height perpendicular to the road surface 10, and the installation space can be reduced. It is possible to measure with 16 optical axes, improving measurement accuracy.
第１図は本発明に係る路面測定装置による路面測定の説
明図、第２図はビデオカメラにおけるレンズのオフセッ
トの説明図、第３図はビデオカメラにおけるレンズのオ
フセットの場合の光学系統の説明図、第４図はモニタの
説明図、第５図は路面性状測定車の斜視図、第６図は従
来の路面測定装置による路面測定の説明図、第７因は１
台のビデオカメラを用いた路面測定の説明図、第８図は
同側面図、第９因は２台のビデオカメラを用いた路面測
定の説明図、第１０図は同側面図である。
１１はレーザチューブ、１２はレーザスキャナー、１６
はレンズ。FIG. 1 is an explanatory diagram of road surface measurement by the road surface measuring device according to the present invention, FIG. 2 is an explanatory diagram of lens offset in a video camera, and FIG. 3 is an explanatory diagram of the optical system in case of lens offset in a video camera. , Fig. 4 is an explanatory diagram of the monitor, Fig. 5 is a perspective view of a road surface quality measuring vehicle, Fig. 6 is an explanatory diagram of road surface measurement using a conventional road surface measuring device, and the seventh factor is 1.
An explanatory diagram of road surface measurement using one video camera, FIG. 8 is a side view of the same, and the ninth factor is an explanatory diagram of road surface measurement using two video cameras, and FIG. 10 is a same side view. 11 is a laser tube, 12 is a laser scanner, 16
is a lens.
Claims (1)
スキャナー１２で拡げて路面１０上に照射してビデオカ
メラで撮像するようにした路面測定装置において撮像面
をビデオカメラの台数程に区分した面に測定範囲を入れ
るようにビデオカメラ内のレンズ１６のレンズ主点を移
動させたことを特徴とする路面計測装置。In a road surface measurement device in which a laser beam emitted from a laser tube 11 is spread by a laser scanner 12 and irradiated onto a road surface 10 and then imaged by a video camera, the measurement range is divided into an imaging surface divided into sections approximately equal to the number of video cameras. A road surface measuring device characterized in that the lens principal point of a lens 16 in a video camera is moved so that the video camera can be inserted into the camera.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1103386A JPH0731057B2 (en) | 1986-01-23 | 1986-01-23 | Road surface measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1103386A JPH0731057B2 (en) | 1986-01-23 | 1986-01-23 | Road surface measuring device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62170809A true JPS62170809A (en) | 1987-07-27 |
| JPH0731057B2 JPH0731057B2 (en) | 1995-04-10 |
Family
ID=11766755
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1103386A Expired - Fee Related JPH0731057B2 (en) | 1986-01-23 | 1986-01-23 | Road surface measuring device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0731057B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006021756A (en) * | 2004-07-07 | 2006-01-26 | Cwa Constructions Sa | Aerial cable cabin |
| JP2020027086A (en) * | 2018-08-17 | 2020-02-20 | 西日本高速道路エンジニアリング四国株式会社 | Measuring device of height of vehicle mount road surface |
| WO2020026917A3 (en) * | 2018-07-30 | 2020-03-19 | Ricoh Company, Ltd. | Measurement apparatus, movable apparatus, and vehicle |
-
1986
- 1986-01-23 JP JP1103386A patent/JPH0731057B2/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006021756A (en) * | 2004-07-07 | 2006-01-26 | Cwa Constructions Sa | Aerial cable cabin |
| WO2020026917A3 (en) * | 2018-07-30 | 2020-03-19 | Ricoh Company, Ltd. | Measurement apparatus, movable apparatus, and vehicle |
| US11265485B2 (en) | 2018-07-30 | 2022-03-01 | Ricoh Company, Ltd. | Measurement apparatus, movable apparatus, and vehicle |
| US11856304B2 (en) | 2018-07-30 | 2023-12-26 | Ricoh Company, Ltd. | Measurement apparatus, movable apparatus, and vehicle |
| JP2020027086A (en) * | 2018-08-17 | 2020-02-20 | 西日本高速道路エンジニアリング四国株式会社 | Measuring device of height of vehicle mount road surface |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0731057B2 (en) | 1995-04-10 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |