JP3151652B2 - Measurement method and device for long objects - Google Patents
Measurement method and device for long objectsInfo
- Publication number
- JP3151652B2 JP3151652B2 JP20844895A JP20844895A JP3151652B2 JP 3151652 B2 JP3151652 B2 JP 3151652B2 JP 20844895 A JP20844895 A JP 20844895A JP 20844895 A JP20844895 A JP 20844895A JP 3151652 B2 JP3151652 B2 JP 3151652B2
- Authority
- JP
- Japan
- Prior art keywords
- data
- infrared camera
- line scan
- vehicle
- image
- 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.)
- Expired - Fee Related
Links
Landscapes
- Length Measuring Devices With Unspecified Measuring Means (AREA)
- Stereoscopic And Panoramic Photography (AREA)
- Length Measuring Devices By Optical Means (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】この発明は，道路などのよう
に長い対象物を測定することの出来る方法および装置に
関するもので，特に，路面の凍結状態を判定する場合に
利用することの出来る測定方法およびその装置に関する
ものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus capable of measuring a long object such as a road, and more particularly to a measuring method which can be used for determining the frozen state of a road surface. And its device.
【０００２】[0002]
【従来の技術】従来，道路等のように赤外線カメラの視
野角を越える長い対象物を測定する場合には，図３に示
すように，対象物１に沿って多数の赤外線カメラ２，２
ａ，２ｂ・・・が設置され，これらの赤外線カメラ２，
２ａ，２ｂ・・・の各視野角内で対象物１がそれぞれ撮
像され，得られた各熱画像を処理して対象物全体を測定
する方法や，あるいは，赤外線カメラ２を対象物１に沿
って段階的に移動させてそれぞれ測定点で次々と撮像
し，それぞれ得られた熱画像を画像処理する方法とがあ
る。2. Description of the Related Art Conventionally, when measuring a long object exceeding the viewing angle of an infrared camera, such as a road, as shown in FIG.
a, 2b, etc. are installed, and these infrared cameras 2,
The object 1 is imaged within each of the viewing angles 2a, 2b,..., And the obtained thermal images are processed to measure the entire object, or the infrared camera 2 is moved along the object 1 There is a method in which the image is sequentially taken at each of the measurement points, and the obtained thermal images are image-processed.
【０００３】[0003]
【発明が解決しようとする課題】赤外線カメラ２を多数
設置する前者の方法では，高価な赤外線カメラ２が多数
必要であるという問題がある。その上，路面の凍結状態
等を測定する場合のように，対象物１が非常に長い場合
には，あまりにも多くの赤外線カメラ２が必要となり，
実際上この方法では測定不可能である。The former method, in which a large number of infrared cameras 2 are installed, has a problem that many expensive infrared cameras 2 are required. In addition, when the object 1 is very long, such as when measuring the frozen state of a road surface, too many infrared cameras 2 are required,
In practice, it cannot be measured with this method.
【０００４】又，１個の赤外線カメラ２を測定点に段階
的に移動させる後者の方法では，各測定点毎に撮像する
手間がかかり面倒であるばかりではなく，移動にも時間
を要し，対象物１全体の測定時間がかかり過ぎる等の問
題がある。In the latter method, in which one infrared camera 2 is moved stepwise to a measurement point, it takes time and effort to take an image at each measurement point, and it takes time to move. There is a problem that it takes too much time to measure the entire object 1.
【０００５】[0005]
【課題を解決するための手段】第１の発明は，車両上に
対象物を撮像するための赤外線カメラを搭載し，車両を
走行させつつ赤外線カメラをラインスキャンして長い対
象物を撮像するとともに，同期信号を車両の速度計に入
力して赤外線カメラの熱画像と速度計の速度デ−タとの
対応関係を求め，速度デ−タに対応して得られた熱画像
を画像処理してラインスキャンデ−タを連続的に測定す
るようにしたものである。According to a first aspect of the present invention, an infrared camera for imaging an object is mounted on a vehicle, and a long object is imaged by line-scanning the infrared camera while the vehicle is running. The synchronization signal is input to the speedometer of the vehicle to determine the correspondence between the thermal image of the infrared camera and the speed data of the speedometer, and the thermal image obtained according to the speed data is image-processed. The line scan data is continuously measured.
【０００６】さらに，この発明は，ラインスキャンデ−
タと速度デ−タと同期信号とを記録媒体に格納し，この
記録媒体に格納した各デ−タをコンピュ−タで変換処理
してグラフデ−タとして表示して長い対象物全体を連続
した状態で判定するようにしたものである。さらに，こ
の発明は，ラインスキャンデ−タを車両に搭載したプロ
セッサにより画像処理してこれを記憶し，このデ−タを
オンラインでコンピュ−タに接続して処理してグラフデ
−タとして連続的に表示して対象物を判定するようにし
たものである。Further, the present invention relates to a line scan data
The data, speed data, and synchronization signal are stored in a recording medium, and each data stored in the recording medium is converted by a computer, displayed as graph data, and the entire long object is continuously displayed. The determination is made based on the state. Further, according to the present invention, the line scan data is subjected to image processing by a processor mounted on a vehicle and stored, and this data is connected to a computer online to process the data, and is continuously processed as graph data. Is displayed on the screen to determine the object.
【０００７】さらに，この発明は，対象物をラインスキ
ャンする赤外線カメラと，この赤外線カメラを搭載する
とともに，速度計を備えた車両と，赤外線カメラで得ら
れたラインスキャンデ−タと速度計の速度デ−タとの対
応関係を求めるための同期信号を発生する同期信号発生
器と，対象物のラインスキャンデ−タと速度デ−タと同
期信号とを記録する記録媒体と，ラインスキャンデ−タ
を画像処理するプロセッサと，画像処理したラインスキ
ャンデ−タをグラフデ−タに変換処理するコンピュ−タ
と，このグラフデ−タを表示するグラフ表示器とを備え
たものである。Further, the present invention provides an infrared camera for line-scanning an object, a vehicle equipped with the infrared camera and having a speedometer, and a line scan data and speedometer obtained by the infrared camera. A synchronizing signal generator for generating a synchronizing signal for obtaining the correspondence with the speed data, a recording medium for recording the line scan data, the speed data and the synchronizing signal of the object, and a line scan data A processor for performing image processing on the image data, a computer for converting line scan data subjected to the image processing into graph data, and a graph display for displaying the graph data.
【０００８】[0008]
【発明の実施の形態】この発明の実施例を，図１〜図２
に基づいて詳細に説明する。図１はこの発明の構成図，
図２は対象物１の熱画像を示している。この実施例で
は，長い対象物１として路面の凍結状態を測定する場合
について説明する。なお，従来例と同一のものは同一名
称を使用するとともに，同一番号を付し，その説明を省
略する。1 and 2 show an embodiment of the present invention.
It will be described in detail based on. FIG. 1 is a block diagram of the present invention,
FIG. 2 shows a thermal image of the object 1. In this embodiment, a case where a frozen state of a road surface is measured as a long object 1 will be described. The same components as those in the conventional example have the same names and the same numbers, and the description thereof will be omitted.
【０００９】図１において，赤外線カメラ２は対象物１
と平行に移動しながらラインスキャンして，図２に示す
熱画像が得られる。３は車両で，赤外線カメラ２を搭載
して対象物１である長い道路に沿って平行に走行しなが
ら路面を撮像するように構成されている。４は速度計
で，この実施例の場合には，車両３の速度計が使用され
ているが，別途に専用の速度計を車両３に搭載してもよ
い。In FIG. 1, an infrared camera 2 is an object 1
The line scan is performed while moving in parallel to the above, and the thermal image shown in FIG. 2 is obtained. Reference numeral 3 denotes a vehicle, which is equipped with an infrared camera 2 and is configured to take an image of a road surface while traveling in parallel along a long road as the object 1. Reference numeral 4 denotes a speedometer. In this embodiment, the speedometer of the vehicle 3 is used, but a dedicated speedometer may be separately mounted on the vehicle 3.
【００１０】５は同期信号発生器で，赤外線カメラ２と
速度計４とを同期させ，タイミングをとることにより，
車両３の速度変化に対応させて対象物１と撮像場所とを
一致させるためのトリガ信号を作成している。６はプロ
セッサで，赤外線カメラ２で撮像された対象物１の熱画
像を画像処理するためのものである。Reference numeral 5 denotes a synchronizing signal generator which synchronizes the infrared camera 2 with the speedometer 4 and takes timing to obtain the timing.
A trigger signal for matching the object 1 with the imaging location is created in accordance with the speed change of the vehicle 3. Reference numeral 6 denotes a processor for processing the thermal image of the object 1 captured by the infrared camera 2.
【００１１】７は記録媒体で，ディスク，リアルタイム
レコ−ダあるいはプロセッサ６のメモリ等が用いられ，
赤外線カメラ２で次々と撮像された対象物１の熱画像を
画像処理して速度計４からの速度デ−タと対応するライ
ンスキャンデ−タとして一時記憶される。Reference numeral 7 denotes a recording medium, which uses a disk, a real-time recorder, a memory of the processor 6, or the like.
The thermal images of the object 1 sequentially captured by the infrared camera 2 are image-processed and temporarily stored as line scan data corresponding to the speed data from the speedometer 4.
【００１２】８はコンピュ−タで，記録媒体７に記憶さ
れているラインスキャンデ−タと速度デ−タとを読み出
して，速度デ−タに基づいて横軸方向を伸縮して求めら
れた横軸横座標と，縦軸縦座標の熱画像とがグラフデ−
タに変換処理され，グラフ表示器９に表示するものであ
る。Numeral 8 denotes a computer which reads out line scan data and velocity data stored in the recording medium 7 and expands and contracts the horizontal axis direction based on the velocity data. The horizontal axis abscissa and the vertical axis ordinate thermal image are graph data.
The data is converted into data and displayed on the graph display 9.
【００１３】図２は，車両３が，対象物１に沿って矢印
Ａ方向に走行し，この車両に搭載された赤外線カメラ２
がラインスキャンしながら撮像した横軸方向に線条の熱
画像を示しており，車両の走行速度の変動に対応して撮
像された線状の熱画像の間隔は不均一になる。FIG. 2 shows that a vehicle 3 travels in the direction of arrow A along an object 1 and an infrared camera 2 mounted on the vehicle.
Shows a thermal image of a line in the horizontal axis direction captured while performing line scanning, and the intervals between the linear thermal images captured in accordance with the fluctuation of the running speed of the vehicle become uneven.
【００１４】次に，作用動作について説明する。図１に
示すように，対象物１は長い道路で，この道路の路面の
凍結状態を測定する場合について説明する。Next, the operation will be described. As shown in FIG. 1, the case where the object 1 is a long road and the frozen state of the road surface of the road is measured will be described.
【００１５】まず，赤外線カメラ２は路面状態を撮像す
ることが出来るような状態で車両に搭載されている。こ
の車両は，図２に示すように，矢印Ａに沿って走行して
いる。目的とする測定点に達すると，搭載されている赤
外線カメラ２の撮像開始と同時に，この赤外線カメラ２
からのトリガ信号が同期信号発生器５に入力されて，こ
の同期信号発生器５が駆動される。First, the infrared camera 2 is mounted on a vehicle in such a state that it can capture the road surface condition. This vehicle is running along arrow A as shown in FIG. When the target measurement point is reached, the infrared camera 2 mounted on the
Is input to the synchronization signal generator 5, and the synchronization signal generator 5 is driven.
【００１６】同期信号発生器５からの同期信号は，速度
計４とプロセッサ６とに入力され，両者のタイミングが
取られ，車両３の速度変化に対応して対象物１の撮像場
所と熱画面とが一致するように制御される。The synchronizing signal from the synchronizing signal generator 5 is input to a speedometer 4 and a processor 6, and the timing of the two is taken. Is controlled so as to match.
【００１７】このようにして，図２に示すように，赤外
線カメラ２は，矢印Ａ方向に移動しながら路面状態がラ
インスキャンにより次々と撮像される。得られた熱画像
はプロセッサ６で画像処理されて，横軸が時間，縦軸が
縦方向の熱画像デ−タがそのまま表示器（図示せず）に
表示され，路面状態が判定される。In this way, as shown in FIG. 2, the infrared camera 2 sequentially captures the road surface state by line scanning while moving in the direction of arrow A. The obtained thermal image is subjected to image processing by the processor 6, and thermal image data with the horizontal axis representing time and the vertical axis representing vertical direction is displayed on a display (not shown) as it is to determine the road surface condition.
【００１８】あるいは，プロセッサ６のラインスキャン
デ−タは，速度計４からの速度デ−タ，同期信号ととも
に記録媒体７に記録され，コンピュ−タ８に伝送され
る。ここで，横軸が速度デ−タに基づいて伸縮されて，
実際の撮像場所とその測定点におけるラインスキャンデ
−タとの対応関係が求められ，グラフデ−タに変換処理
されて，グラフ表示器９に表示されて，路面の凍結状態
が判定される。Alternatively, the line scan data of the processor 6 is recorded on the recording medium 7 together with the speed data from the speedometer 4 and the synchronizing signal, and transmitted to the computer 8. Here, the horizontal axis is expanded and contracted based on the speed data.
The correspondence between the actual imaging location and the line scan data at the measurement point is determined, converted into graph data, displayed on the graph display 9, and the frozen state of the road surface is determined.
【００１９】[0019]
【発明の効果】第１の発明は，車両上に対象物を撮像す
るための赤外線カメラを搭載し，この車両を走行させつ
つ赤外線カメラをラインスキャンしながら対象物を撮像
するとともに，同期信号を赤外線カメラと車両の速度計
とに入力して赤外線カメラで撮像された熱画像と速度計
の速度デ−タとの対応関係を求め，速度デ−タに対応し
て得られた熱画像を画像処理してラインスキャンデ−タ
を求めるようにしたので，１台の赤外線カメラで道路等
の長い対象物の連続した状態を単時間で正確に測定する
ことが出来る。又，測定にも手間がかからない。According to a first aspect of the present invention, an infrared camera for imaging an object is mounted on a vehicle, and while the vehicle is running, the infrared camera is line-scanned to image the object and a synchronization signal is generated. The relationship between the thermal image captured by the infrared camera and the speed data of the speedometer is input to the infrared camera and the speedometer of the vehicle, and the thermal image obtained corresponding to the speed data is obtained as an image. Since line scan data is obtained by processing, the continuous state of a long object such as a road can be accurately measured in a single time with one infrared camera. Also, the measurement does not take much time.
【００２０】第２の発明は，対象物をラインスキャンす
る赤外線カメラと，この赤外線カメラを搭載するととも
に，速度計を備えた車両と，赤外線カメラで得られたラ
インスキャンデ−タと速度計の速度デ−タとの対応関係
を求めるための同期信号を発生する同期信号発生器と，
ラインスキャンデ−タを画像処理するプロセッサと，対
象物のラインスキャンデ−タ，速度デ−タ，同期信号と
を記録する記録媒体と，画像処理したラインスキャンデ
−タをグラフデ−タに変換処理するコンピュ−タと，こ
のグラフデ−タを表示するグラフ表示器とを備えている
ので，上記効果があるとともに，測定装置としても構造
が簡単で価格が安くなり経済的である。According to a second aspect of the present invention, there is provided an infrared camera for line-scanning an object, a vehicle equipped with the infrared camera and having a speedometer, and a line scan data and a speedometer obtained by the infrared camera. A synchronizing signal generator for generating a synchronizing signal for determining a correspondence with speed data;
A processor for image processing line scan data, a recording medium for recording line scan data, velocity data, and synchronization signals of an object; and converting the line processed scan data to graph data Since it has a computer for processing and a graph display for displaying this graph data, it has the above-mentioned effects, and also has a simple structure, a low cost and economical as a measuring device.
【図１】この発明の実施例を示す構成部である。FIG. 1 is a configuration section showing an embodiment of the present invention.
【図２】対象物１の熱画像を示す説明図である。FIG. 2 is an explanatory diagram showing a thermal image of an object 1.
【図３】従来例を示す説明図である。FIG. 3 is an explanatory diagram showing a conventional example.
１ 対象物 ２ 赤外線カメラ ３ 車両 ４ 速度計 ５ 同期信号発生器 ６ プロセッサ ７ 記録媒体 ８ コンピュ−タ ９ グラフ表示器 DESCRIPTION OF SYMBOLS 1 Object 2 Infrared camera 3 Vehicle 4 Speedometer 5 Synchronous signal generator 6 Processor 7 Recording medium 8 Computer 9 Graph display
Claims (4)
カメラを搭載し，前記車両を走行させつつ前記赤外線カ
メラをラインスキャンしながら前記対象物を撮像すると
ともに，同期信号を前記赤外線カメラと前記車両の速度
計とに入力して前記赤外線カメラで撮像された熱画像と
前記速度計の速度デ−タとの対応関係を求め，前記速度
デ−タに対応して得られた前記熱画像を画像処理してラ
インスキャンデ−タを求めること，を特徴とする長い対
象物の測定方法。An infrared camera for capturing an image of an object is mounted on a vehicle. The infrared camera is line-scanned while the vehicle is running, and an image of the object is captured. The thermal image obtained by inputting to the speedometer of the vehicle and obtaining the correspondence between the thermal image captured by the infrared camera and the speed data of the speedometer is obtained. A long target object by subjecting the image to line scan data.
−タと前記同期信号とを記録媒体に格納し，この記録媒
体に格納した前記各デ−タをコンピュ−タで変換処理し
てグラフデ−タとして表示して連続した状態で前記対象
物を判定することを特徴とする請求項１に記載の長い対
象物の測定方法。2. The apparatus according to claim 1, wherein said line scan data, said speed data, and said synchronization signal are stored in a recording medium, and said data stored in said recording medium is converted by a computer into graph data. The method for measuring a long object according to claim 1, wherein the object is determined in a continuous state by displaying the object as a negative data.
搭載したプロセッサに記憶するとともに，前記速度デ−
タと前記同期信号とともにオンラインでコンピュ−タに
接続し，ここで各デ−タを変換処理してグラフデ−タと
して表示して連続した状態で前記対象物を判定すること
を特徴とする請求項１に記載の長い対象物の測定方法。3. The apparatus according to claim 1, wherein said line scan data is stored in a processor mounted on said vehicle, and said speed scan data is stored in said processor.
A computer is connected to a computer together with the data and the synchronizing signal, wherein each data is converted, displayed as graph data, and the object is determined in a continuous state. 2. The method for measuring a long object according to 1.
ラと，この赤外線カメラを搭載するとともに，速度計を
備えた車両と，前記赤外線カメラで得られたラインスキ
ャンデ−タと前記速度計の速度デ−タとの対応関係を求
めるための同期信号を発生する同期信号発生器と，前記
ラインスキャンデ−タを画像処理するプロセッサと，前
記対象物のラインスキャンデ−タと速度デ−タと同期信
号とを記録する記録媒体と，画像処理したラインスキャ
ンデ−タと前記速度デ−タと前記同期信号とをグラフデ
−タに変換処理するコンピュ−タと，このグラフデ−タ
を表示するグラフ表示器とを備えたことを特徴とする長
い対象物の測定装置。4. An infrared camera for line-scanning an object, a vehicle equipped with the infrared camera and equipped with a speedometer, a line scan data obtained by the infrared camera, and a speed data of the speedometer. A synchronizing signal generator for generating a synchronizing signal for obtaining a correspondence relationship with the data, a processor for performing image processing on the line scan data, and synchronizing the line scan data and velocity data of the object. A recording medium for recording signals, a computer for converting line scan data, image data, and the speed data and the synchronizing signal into graph data, and a graph display for displaying the graph data And a measuring device for measuring a long object.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20844895A JP3151652B2 (en) | 1995-07-24 | 1995-07-24 | Measurement method and device for long objects |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20844895A JP3151652B2 (en) | 1995-07-24 | 1995-07-24 | Measurement method and device for long objects |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0933241A JPH0933241A (en) | 1997-02-07 |
| JP3151652B2 true JP3151652B2 (en) | 2001-04-03 |
Family
ID=16556376
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20844895A Expired - Fee Related JP3151652B2 (en) | 1995-07-24 | 1995-07-24 | Measurement method and device for long objects |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3151652B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101012691B1 (en) * | 2010-07-05 | 2011-02-09 | 주훈 | 3d stereo thermal imaging camera system |
| KR101766187B1 (en) * | 2009-12-18 | 2017-08-08 | 시냅틱스 인코포레이티드 | Method and apparatus for changing operating modes |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2009414A1 (en) * | 1999-01-14 | 2008-12-31 | Panasonic Corporation | Infrared imaging device, vehicle with the same, and infrared image adjusting device |
-
1995
- 1995-07-24 JP JP20844895A patent/JP3151652B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101766187B1 (en) * | 2009-12-18 | 2017-08-08 | 시냅틱스 인코포레이티드 | Method and apparatus for changing operating modes |
| KR101012691B1 (en) * | 2010-07-05 | 2011-02-09 | 주훈 | 3d stereo thermal imaging camera system |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0933241A (en) | 1997-02-07 |
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