JPH08184555A - Method for inspecting distribution of moisture - Google Patents
Method for inspecting distribution of moistureInfo
- Publication number
- JPH08184555A JPH08184555A JP33929294A JP33929294A JPH08184555A JP H08184555 A JPH08184555 A JP H08184555A JP 33929294 A JP33929294 A JP 33929294A JP 33929294 A JP33929294 A JP 33929294A JP H08184555 A JPH08184555 A JP H08184555A
- Authority
- JP
- Japan
- Prior art keywords
- light
- wavelength band
- inspected
- moisture
- water
- 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.)
- Pending
Links
Landscapes
- Investigating Or Analysing Materials By Optical Means (AREA)
- Measuring And Recording Apparatus For Diagnosis (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、水や汗から生じる水分
分布を可視化し、その水分分布を非接触で計測すること
を可能にする検査方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an inspection method which makes it possible to visualize the distribution of water generated from water or sweat and to measure the water distribution in a non-contact manner.
【０００２】[0002]
【従来の技術及びその問題点】人体の発汗状態は、その
人の生理状態や心理状態を強く反映している。また、衣
服の快適性は、衣服に吸収された汗の状態に大きく左右
される。このことから、発汗状態を計測して、生理的心
理的反応や衣服の快適性の解明に役立てようとする試み
が種々行われてきた。2. Description of the Related Art The sweating state of a human body strongly reflects the physiological state and psychological state of the person. Further, the comfort of clothes is greatly influenced by the state of sweat absorbed in the clothes. For this reason, various attempts have been made to measure the sweating state to help clarify physiological and psychological reactions and comfort of clothes.
【０００３】例えば、人体の発汗分布を計測する方法と
しては、汗を化学反応を用いて色づける方法が用いられ
てきた。ミノール法では、ヨードの無水アルコール溶液
を皮膚に塗り、アルコールが蒸発した後に澱粉を振り掛
けておき、発汗により濡れることによりヨード澱粉反応
が起こって紫色になる状態を観察して検査を行う。For example, as a method of measuring the perspiration distribution of the human body, a method of coloring sweat using a chemical reaction has been used. In the minol method, an anhydrous alcohol solution of iodine is applied to the skin, starch is sprinkled after the alcohol is evaporated, and the iodine starch reaction occurs due to wetting by perspiration to observe the state of becoming purple, and the test is performed.
【０００４】この方法によれば、紫色の濃淡で発汗量を
およそ判断できるが、ヨードや澱粉を皮膚に塗布しなけ
ればならず、非接触の計測ができず、検査に手間と時間
がかかる上、被験者に不快感を与えていた。According to this method, the amount of perspiration can be roughly determined by the shade of purple, but iodine or starch must be applied to the skin, noncontact measurement cannot be performed, and the inspection takes time and labor. , Was causing discomfort to the subject.
【０００５】また、皮膚の一定部位の発汗量を計測する
には、その部位を気密に覆い、一定時間にたまった水分
量を測定する方法がとられてきた。例えば、人体の一部
を気密性フィルムとゴムバンドで密閉し、その密閉空間
内にたまった水分量を測るアームバック法や、皮膚の表
面を部分的にカプセル（小容器）で気密に覆い、カプセ
ルに乾燥空気を連続的に送り、カプセルから出てきた空
気に含まれる水分量を湿度計や赤外線ガス分析計を用い
て測る換気カプセル法等がある。これらも、人体に気密
領域を作るための器具を装着しなければならず、しかも
発汗の分布を計測することはできなかった。Further, in order to measure the amount of perspiration of a certain part of the skin, a method has been adopted in which the part is covered airtightly and the amount of water accumulated for a certain time is measured. For example, a part of the human body is hermetically sealed with an airtight film and a rubber band, and the armback method of measuring the amount of water accumulated in the hermetically sealed space, or the surface of the skin is partially airtightly covered with a capsule (small container), There is a ventilation capsule method in which dry air is continuously sent to the capsule and the amount of water contained in the air coming out of the capsule is measured using a hygrometer or an infrared gas analyzer. In these cases as well, it was necessary to wear a device for creating an airtight area on the human body, and it was not possible to measure the distribution of sweating.
【０００６】また、衣服に吸収した汗の量を測るには、
汗を吸収する前と後との衣服の重量を測定し、その差か
ら求めていた。この方法では、発汗の時間的変化や２次
元的分布を計測することはできなかった。To measure the amount of sweat absorbed in clothes,
The weight of clothes before and after absorbing sweat was measured, and the difference was calculated. With this method, it was not possible to measure the temporal change or the two-dimensional distribution of sweating.
【０００７】本発明は、これら従来技術の問題点を解決
し、水や汗から生じる水分分布を可視化し、非接触で検
査を行うことができる検査方法を提供することを目的と
する。It is an object of the present invention to solve these problems of the prior art and to provide an inspection method which makes it possible to visualize the distribution of water generated from water or sweat and perform an inspection without contact.
【０００８】[0008]
【課題を解決するための手段】本発明の前記課題は、被
検査表面に、１．９〜２．４μｍの波長帯域を含む光を
照射し、該波長帯域の光を通過させるフイルタを有し該
波長帯域を感知する撮像装置で、前記被検査表面からの
反射光を撮像することにより、前記被検査表面の水分分
布を可視化することを特徴とする水分分布の検査方法、
及び、被検査表面に、１．９〜２．４μｍの波長帯域の
光を照射し、該波長帯域の光を感知する撮像装置で、被
検査表面からの反射光を撮像することにより、該被検査
表面の水分分布を可視化することを特徴とする水分分布
の検査方法により達成される。The above object of the present invention comprises a filter which irradiates a surface to be inspected with light including a wavelength band of 1.9 to 2.4 μm and transmits light in the wavelength band. A method for inspecting water content, characterized by visualizing the water distribution on the surface to be inspected by imaging reflected light from the surface to be inspected with an imaging device that senses the wavelength band.
Further, the surface to be inspected is irradiated with light in the wavelength band of 1.9 to 2.4 μm, and the reflected light from the surface to be inspected is imaged by an imaging device that senses the light in the wavelength band. This is achieved by a method for inspecting water distribution, which is characterized by visualizing the water distribution on the inspection surface.
【０００９】[0009]
【作用】水は、１．３μｍ以上の赤外光領域で、よく光
を吸収するいくつかの波長帯域を有する。したがって、
物体に到達する光を、赤外線カメラ等で撮像することに
より、その波長帯域の分光画像を得て、物体表面におけ
る水分の付着状態を可視化することが考えられる。しか
し、常温付近の物体は３μｍ以上の赤外光を放射してお
り、その放射光強度は物体の温度によって変化する。し
たがって、水分の付着状態を正確に見ることはできな
い。一方、３μｍ未満の波長帯域では、１．９〜２．４
μｍの波長の光が強く吸収される。本願発明は、この
１．９〜２．４μｍの帯域の光を用いて分光画像を得る
ことにより、物体の温度に影響されることなく、水分の
付着状況を正確に可視化することを可能にしたのであ
る。Function Water has several wavelength bands that absorb light well in the infrared light region of 1.3 μm or more. Therefore,
It is conceivable to image the light reaching the object with an infrared camera or the like to obtain a spectral image of the wavelength band and visualize the state of adhesion of water on the surface of the object. However, an object near room temperature emits infrared light of 3 μm or more, and the intensity of the emitted light changes depending on the temperature of the object. Therefore, it is not possible to accurately see the water adhesion state. On the other hand, in the wavelength band of less than 3 μm, 1.9 to 2.4.
Light with a wavelength of μm is strongly absorbed. The present invention makes it possible to accurately visualize the water adhesion state without being affected by the temperature of the object by obtaining a spectral image using the light in the band of 1.9 to 2.4 μm. Of.
【００１０】[0010]
【実施例】以下、本発明の実施例につき添付図面を参照
しつつ説明する。図１は、本願発明に係る検査方法の実
施状況を概略的に示している。図示のように、被検査表
面Ａに対し、光照射装置１からの赤外光を照射する。こ
の赤外光は、１．９〜２．４μｍの波長帯域を含んだも
のとされる。被検査表面Ａにより反射された光は、撮像
装置２により撮像され、モニタ３により可視化される。
この例では、撮像装置として、１．９〜２．４μｍの波
長帯域を通過させるフィルタ、及び前記波長帯域の感知
が可能な赤外線カメラと可視光用光学レンズとを組み合
わせたものを用いた。前記フィルタは、前記波長帯域以
外の波長帯域の光を通さないものとするのが望ましい
が、物体が常温で発する３μｍ以上の波長帯域をカット
するもの、或いは２．４μｍを越える波長帯域をカット
するものとすることもできる。Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 schematically shows an implementation situation of an inspection method according to the present invention. As illustrated, the surface A to be inspected is irradiated with infrared light from the light irradiation device 1. This infrared light is supposed to include a wavelength band of 1.9 to 2.4 μm. The light reflected by the surface A to be inspected is imaged by the imaging device 2 and visualized by the monitor 3.
In this example, as the image pickup device, a filter in which a wavelength band of 1.9 to 2.4 μm is passed, and an infrared camera capable of sensing the wavelength band and a visible light optical lens are used in combination. It is desirable that the filter does not pass light in a wavelength band other than the wavelength band, but a filter that cuts a wavelength band of 3 μm or more emitted by an object at room temperature or a wavelength band that exceeds 2.4 μm is cut. It can also be one.
【００１１】これに代えて、光照射装置１として、前記
波長帯域の光を出射するものを使用し、前記波長帯域を
感知する撮像装置で、被検査表面からの反射光を撮像す
るようにしてもよい。Instead of this, as the light irradiation device 1, a device that emits light in the wavelength band is used, and an image pickup device that detects the wavelength band is used to image the reflected light from the surface to be inspected. Good.
【００１２】図２は、布に水で「Ｈ2 Ｏ」という文字を
書いたものの像を示している。図２Ａは、ハロゲンラン
プの光の下で通常の可視光用カメラを用いて撮像したも
のである。図２Ｂは、同じ布に同じハロゲンランプの光
を照射し、波長２μｍ近傍の波長帯域のみを透過させる
フィルタを備えた撮像装置を用いて撮像したものであ
る。図２Ｃは、同じ布に、同じハロゲンランプの光を照
射し、３〜５μｍの波長帯域のみを透過させるフィルタ
を備えた撮像装置を用いて撮像したものである。図２Ａ
では、水分の付着状態が全く見えない。図２Ｃでは、
「Ｈ2 Ｏ」と書いた部分の周辺部まで黒色部分が広がっ
ており、正確な検査が不能となっている。これは、物体
の常温での放射光を撮像しているため、水が僅かでも浸
透した部分が蒸発熱により温度低下し、その部分からの
放射光が著しく減少しているからである。これらに対
し、図２Ｂでは、「Ｈ2 Ｏ」という文字を明瞭に見るこ
とができる。FIG. 2 shows an image of a cloth on which the letters "H 2 O" have been written. FIG. 2A is an image taken using a normal visible light camera under the light of a halogen lamp. FIG. 2B is an image obtained by irradiating the same cloth with the light of the same halogen lamp and using an imaging device equipped with a filter that transmits only a wavelength band near a wavelength of 2 μm. FIG. 2C is an image obtained by irradiating the same cloth with the light of the same halogen lamp and using an imaging device equipped with a filter that transmits only a wavelength band of 3 to 5 μm. Figure 2A
Then, the adhered state of water cannot be seen at all. In FIG. 2C,
The black part has spread to the peripheral part of the part written as "H 2 O", which makes accurate inspection impossible. This is because the radiant light of the object at room temperature is imaged, and the temperature of the portion where water permeates even slightly decreases due to the heat of evaporation, and the radiant light from that portion is significantly reduced. On the other hand, in FIG. 2B, the letters “H 2 O” can be clearly seen.
【００１３】図３は、図１に示した撮像装置により、人
の顔に対する水の付着有無の状態を可視化したものであ
る。図３Ａは、顔に水を付けない状態の画像、図３Ｂ
は、右頬に水を付けた状態の画像である。人体は水分を
多く含んでいるため、水を付ける前でも顔全体が黒っぽ
くなっているが、図３Ｂでは、図３Ａに比し、右頬も広
い範囲で黒くなっており、この部分に水が付着している
ことを明瞭に示している。これにより、分光画像を用い
て人体表面の発汗状態を可視化できることが明らかであ
る。なお、図３の画像は、水付着前後の変化を分かりや
すくするために、画像の表示階調を６階調に調整して表
示している。FIG. 3 is a view visualizing the presence / absence of water adhered to a human face by the image pickup apparatus shown in FIG. FIG. 3A is an image of a face without water, FIG. 3B
Is an image with water on the right cheek. Since the human body contains a large amount of water, the entire face is dark even before applying water, but in FIG. 3B, the right cheek is also darker in a wider area than in FIG. It clearly shows that they are attached. It is thus clear that the sweating state on the human body surface can be visualized using the spectral image. Note that the image in FIG. 3 is displayed by adjusting the display gradation of the image to 6 in order to make it easier to understand the change before and after water adhesion.
【００１４】[0014]
【発明の効果】以上のように、本発明によれば、被検査
表面への光照射とその反射光の撮像により、特定波長帯
域の分光画像を得、これにより被検査表面の水分分布を
可視化できるので、検査を非接触で行うことができる。
この場合、分光画像は、１．９〜２．４μｍの波長帯域
で観測することにより、常温付近での物体からの放射光
の影響をなくすことができ、正確な分布の検査が可能で
ある。したがって、発汗として表われる生理的反応や心
理的反応の解明や測定、或いは発汗時の衣服の快適性の
評価に応用することもできる。As described above, according to the present invention, a spectroscopic image in a specific wavelength band is obtained by irradiating the surface to be inspected with light and imaging the reflected light, thereby visualizing the water distribution on the surface to be inspected. Therefore, the inspection can be performed without contact.
In this case, by observing the spectral image in the wavelength band of 1.9 to 2.4 μm, it is possible to eliminate the influence of the radiated light from the object near room temperature, and it is possible to inspect the distribution accurately. Therefore, it can be applied to elucidation and measurement of physiological reaction and psychological reaction that appear as sweating, or evaluation of comfort of clothes when sweating.
【図１】本発明に係る検査方法の実施状況を概略的に示
すプロック図である。FIG. 1 is a block diagram schematically showing an implementation status of an inspection method according to the present invention.
【図２】本発明方法及び他の方法による撮像例を示す写
真である。FIG. 2 is a photograph showing an example of imaging by the method of the present invention and another method.
【図３】本発明方法による他の撮像例を示す写真であ
る。FIG. 3 is a photograph showing another imaging example according to the method of the present invention.
１ 光照射装置 ２ 撮像装置 ３ モニタ Ａ 被検査表面 1 Light irradiation device 2 Imaging device 3 Monitor A Surface to be inspected
Claims (2)
長帯域を含む光を照射し、該波長帯域の光を通過させる
フイルタを有し該波長帯域を感知する撮像装置で、前記
被検査表面からの反射光を撮像することにより、前記被
検査表面の水分分布を可視化することを特徴とする水分
分布の検査方法。1. An imaging apparatus for irradiating a surface to be inspected with light including a wavelength band of 1.9 to 2.4 μm and having a filter for transmitting light in the wavelength band, and sensing the wavelength band. A method for inspecting a water distribution, which comprises visualizing a water distribution on the surface to be inspected by imaging reflected light from the surface to be inspected.
長帯域の光を照射し、該波長帯域の光を感知する撮像装
置で、被検査表面からの反射光を撮像することにより、
該被検査表面の水分分布を可視化することを特徴とする
水分分布の検査方法。2. An image pickup device for irradiating light on a surface to be inspected with light in a wavelength band of 1.9 to 2.4 μm and sensing light in the wavelength band, by imaging reflected light from the surface to be inspected. ,
A method for inspecting water distribution, which comprises visualizing the water distribution on the surface to be inspected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33929294A JPH08184555A (en) | 1994-12-29 | 1994-12-29 | Method for inspecting distribution of moisture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33929294A JPH08184555A (en) | 1994-12-29 | 1994-12-29 | Method for inspecting distribution of moisture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH08184555A true JPH08184555A (en) | 1996-07-16 |
Family
ID=18326080
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP33929294A Pending JPH08184555A (en) | 1994-12-29 | 1994-12-29 | Method for inspecting distribution of moisture |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH08184555A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7237946B2 (en) * | 2003-10-28 | 2007-07-03 | Flir Systems Ab | Use of IR camera |
| JP2013215342A (en) * | 2012-04-06 | 2013-10-24 | Sharp Corp | Water amount detection device, vital sign detection device, and environment control system |
| JP2020162915A (en) * | 2019-03-29 | 2020-10-08 | 日本電気株式会社 | Sweat rate estimation device, sweat rate estimation method, and program |
| WO2022030116A1 (en) | 2020-08-07 | 2022-02-10 | ソニーグループ株式会社 | Biological sensor and biological state differentiation method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0534281A (en) * | 1991-08-02 | 1993-02-09 | Iseki & Co Ltd | Evaluating apparatus for appearance of melon |
| JPH05329163A (en) * | 1992-06-03 | 1993-12-14 | Hamamatsu Photonics Kk | Method for detecting water presence-position in skin and apparatus therefor |
| JPH05332924A (en) * | 1992-06-03 | 1993-12-17 | Hamamatsu Photonics Kk | Measuring apparatus of absorbance of infrared ray of object |
-
1994
- 1994-12-29 JP JP33929294A patent/JPH08184555A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0534281A (en) * | 1991-08-02 | 1993-02-09 | Iseki & Co Ltd | Evaluating apparatus for appearance of melon |
| JPH05329163A (en) * | 1992-06-03 | 1993-12-14 | Hamamatsu Photonics Kk | Method for detecting water presence-position in skin and apparatus therefor |
| JPH05332924A (en) * | 1992-06-03 | 1993-12-17 | Hamamatsu Photonics Kk | Measuring apparatus of absorbance of infrared ray of object |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7237946B2 (en) * | 2003-10-28 | 2007-07-03 | Flir Systems Ab | Use of IR camera |
| JP2013215342A (en) * | 2012-04-06 | 2013-10-24 | Sharp Corp | Water amount detection device, vital sign detection device, and environment control system |
| JP2020162915A (en) * | 2019-03-29 | 2020-10-08 | 日本電気株式会社 | Sweat rate estimation device, sweat rate estimation method, and program |
| WO2022030116A1 (en) | 2020-08-07 | 2022-02-10 | ソニーグループ株式会社 | Biological sensor and biological state differentiation method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP1241979B1 (en) | Method and device for determining local distribution of a measuring parameter | |
| US5362966A (en) | Measurement of finger temperature in near-infrared quantitative measurement instrument | |
| KR20010071216A (en) | Non-invasive measurement of analyte in the tympanic membrane | |
| US6775565B1 (en) | Imaging apparatus for displaying concentration ratios | |
| JP3686422B2 (en) | Measurement of tissue analyte by infrared rays | |
| US6600946B1 (en) | Methods and apparatus for quantifying dermal hydration | |
| KR100588306B1 (en) | Medical apparatus using sweating by a temperature adjustment | |
| US4528986A (en) | Apparatus for determining a discolored skin area on the surface of skin | |
| US7006855B1 (en) | Sensor for radiance based diagnostics | |
| KR100695761B1 (en) | Non-invasive continuous blood glucose monitoring | |
| JP3328810B2 (en) | Apparatus for quantitatively measuring the distribution of local measurands | |
| JP7228276B2 (en) | Apparatus for multimodal analysis of allergic reactions in skin tests, hybrid method for multispectral imaging of allergic reactions in skin tests and its use for automatic evaluation of results of these tests | |
| CN107205639B (en) | Contact thermo-optical structure and its use in non-invasive imaging of the extent of histamine-induced hyperthermic subcutaneous reactions in skin allergy, recording device and method for diagnosing allergy | |
| JP2009513249A (en) | Caries detection method and system | |
| WO2002065069A2 (en) | Hyperspectral imaging calibration device | |
| KR102297158B1 (en) | Moisture-reactive filter | |
| Aylwin et al. | The use of infrared thermography for the dynamic measurement of skin temperature of moving athletes during competition; methodological issues | |
| JPH08184555A (en) | Method for inspecting distribution of moisture | |
| JP2009213728A (en) | Perspiration region specifying system, perspiration region specifying apparatus, coating member, and perspiration region specifying method | |
| US10718709B2 (en) | Device for measuring radiation backscattered by a sample and measurement method using such a device | |
| KR200169489Y1 (en) | A infrared thermography diagnosis the contact method | |
| KR200457337Y1 (en) | Infrared thermographic imaging system | |
| CN113692247A (en) | Device for measuring sweat amount of each part of human body by using brightness change and method for measuring sweat amount | |
| Wang et al. | Sweat distribution measurements using near-infrared spectroscopic imaging | |
| KR20200050174A (en) | Hyperhidrosis diagnostic system |