JPH08266468A - Wink detection system - Google Patents
Wink detection systemInfo
- Publication number
- JPH08266468A JPH08266468A JP6266497A JP26649794A JPH08266468A JP H08266468 A JPH08266468 A JP H08266468A JP 6266497 A JP6266497 A JP 6266497A JP 26649794 A JP26649794 A JP 26649794A JP H08266468 A JPH08266468 A JP H08266468A
- Authority
- JP
- Japan
- Prior art keywords
- detection system
- blink
- video camera
- calculation result
- closed
- 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
- 238000001514 detection method Methods 0.000 title claims description 39
- 210000000744 eyelid Anatomy 0.000 claims abstract description 41
- 210000001747 pupil Anatomy 0.000 claims abstract description 21
- 238000000034 method Methods 0.000 abstract description 4
- 210000000554 iris Anatomy 0.000 abstract 3
- 238000005259 measurement Methods 0.000 description 9
- 230000004397 blinking Effects 0.000 description 4
- 210000001061 forehead Anatomy 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000002123 temporal effect Effects 0.000 description 2
- 208000003556 Dry Eye Syndromes Diseases 0.000 description 1
- 206010013774 Dry eye Diseases 0.000 description 1
- 208000003443 Unconsciousness Diseases 0.000 description 1
- LFYJSSARVMHQJB-QIXNEVBVSA-N bakuchiol Chemical compound CC(C)=CCC[C@@](C)(C=C)\C=C\C1=CC=C(O)C=C1 LFYJSSARVMHQJB-QIXNEVBVSA-N 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000006996 mental state Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、ドライアイの判定や
角膜温度と瞬きとの関係その他、眼科治療のための瞬き
検出システムに関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a blink detection system for ophthalmologic treatment, such as determination of dry eye and the relationship between corneal temperature and blink.
【０００２】[0002]
【従来の技術】例えば特開平３−２０５０２４号公報に
は、被検眼の前眼部を観察するテレビカメラと、テレビ
カメラからの信号をフィールド単位で積分する積分部
と、この積分部の出力の変化から瞬きを検出する検出部
とを備え、前記積分部の出力が所定値以上のとき瞬きと
して検出する瞬き検出システムが提案されている。この
瞬き検出システムは、視野計と併用されるもので、被検
者の顔にドームを被せ、ドーム前面の窓に設けられた被
検眼固定部に顔の被検眼部分を固定（額当てに額を当
て、顎当てに顎を当てて固定する）して前方からテレビ
カメラで被検眼前眼部を観察するようになっている。2. Description of the Related Art For example, in Japanese Patent Laid-Open No. 3-205024, a television camera for observing the anterior segment of an eye to be inspected, an integrating section for integrating a signal from the television camera in field units, and an output of this integrating section There has been proposed a blink detection system that includes a detection unit that detects a blink from a change, and that detects a blink when the output of the integration unit is a predetermined value or more. This blink detection system is used in combination with a perimeter, and covers the subject's face with a dome, and fixes the subject's eye part to the subject's eye fixing part provided on the window in front of the dome (forehead support). , And fix the chin to the chin rest) and observe the anterior segment of the eye with a TV camera from the front.
【０００３】[0003]
【発明が解決しようとする課題】前記の瞬き検出システ
ムは、前記積分部の出力が所定値以上であるときに瞬き
として検出するものであるから、半瞬き（ハーフブリン
ク）を検出するのが困難であるか、あるいは完全な瞬き
とハーフブリンクとを識別するのが困難である。また、
被検者の顔にドームを被せ、被検眼前眼部をドーム前面
の窓に設けられた被検眼固定部に顔の被検眼部分を固定
して観察するので、被検者に緊張感を与え、被検者の精
神を自然な状態に保って瞬きを検出することができな
い。すなわち、瞬きを検出することはできても、被検者
の無意識的な瞬きを検出することはできないので、測定
結果を眼科治療に役立てることができない。Since the above-mentioned blink detection system detects a blink when the output of the integrator is a predetermined value or more, it is difficult to detect a half blink. Or it is difficult to distinguish between a full blink and a half blink. Also,
The subject's face is covered with a dome, and the anterior segment of the subject's eye is fixed to the subject's eye fixing part provided in the window on the front of the dome to observe the subject's eye, so that the subject is given a sense of tension. , It is impossible to detect the blink while keeping the mental state of the subject in a natural state. That is, although the blink can be detected, the unconscious blink of the subject cannot be detected, and thus the measurement result cannot be used for ophthalmic treatment.
【０００４】この発明の目的は、前述のような欠点を改
善するとともに、被検者の閉開瞼の状態を経時的に観察
することができる瞬き検出システムを提供することにあ
る。It is an object of the present invention to provide a blink detection system capable of observing the above-mentioned drawbacks and observing the state of the subject's closed and open eyelids with time.
【０００５】[0005]
【課題を解決するための手段】請求項１に記載の発明に
よる瞬き検出システムは、前述の目的を達成するため、
被検眼前眼部を含む顔の一定領域をビデオカメラで撮影
し、このビデオカメラの映像信号を画像入力装置により
デジタル信号に変換し、コンピュータにより前記デジタ
ル信号を二値化して所定の時間間隔で瞳孔を含む虹彩部
分の面積又は閉開瞼方向の直径を演算し、その演算結果
を出力するように構成したものである。In order to achieve the above-mentioned object, the blink detection system according to the invention as set forth in claim 1
A certain area of the face including the anterior segment of the eye to be examined is photographed with a video camera, the video signal of this video camera is converted into a digital signal by an image input device, and the digital signal is binarized by a computer at predetermined time intervals. It is configured to calculate the area of the iris portion including the pupil or the diameter in the direction of the closed and open eyelid, and output the calculation result.
【０００６】請求項２に記載の発明による瞬き検出シス
テムは、請求項１に記載の瞬き検出システムにおいて、
前記演算結果の出力は、縦横方向の一方に沿って瞳孔を
含む虹彩部分の面積又は閉開瞼方向の直径を表示し、縦
横方向の他方に沿って検出開始後の経過時間を表示する
ように構成したものである。A blink detection system according to a second aspect of the present invention is the blink detection system according to the first aspect,
The output of the calculation result displays the area of the iris part including the pupil or the diameter in the direction of the closed eyelid along one of the vertical and horizontal directions, and displays the elapsed time after the start of detection along the other of the vertical and horizontal directions. It is composed.
【０００７】請求項３に記載の発明による瞬き検出シス
テムは、請求項１又は２に記載の瞬き検出システムにお
いて、前記演算結果が０又は所定値以下であるときを閉
瞼とし、前記演算結果から閉瞼時間と開瞼時間とを演算
し、この演算結果を出力するように構成したものであ
る。A blink detection system according to a third aspect of the present invention is the blink detection system according to the first or second aspect, wherein when the calculation result is 0 or a predetermined value or less is set as an eyelid, and the calculation result is calculated from the calculation result. The eyelid closing time and the eyelid opening time are calculated, and the calculation result is output.
【０００８】請求項４に記載の発明による瞬き検出シス
テムは、前記いずれかに記載の瞬き検出システムにおい
て、前記ビデオカメラにレコーダを付属させたものであ
る。A blink detecting system according to a fourth aspect of the present invention is the blink detecting system according to any one of the above, wherein a recorder is attached to the video camera.
【０００９】[0009]
【作用】請求項１に記載の発明によれば、被検者を椅子
にかけさせ、例えば被検者の顔の口から額まで程度の範
囲をビデオカメラで撮影する。撮影された映像信号を画
像入力装置を介してコンピュータに入力し、コンピュー
タに付属するＣＲＴに画像を表示する。画像を見ながら
瞳孔を含む虹彩部分と他の部分とが区別できる二値化レ
ベルを選択し、この二値化レベルをコンピュータに付属
する入力装置によって入力する。被検眼（片眼）前眼部
を含む測定範囲（走査範囲）を選択し、この測定範囲を
前記入力装置からコンピュータに入力する。以上のよう
に準備して測定を開始すると、前記検出範囲内における
白と黒（明るい点と暗い点）の二値画像の黒の部分の画
素を加算することにより、瞳孔を含む虹彩部分の面積又
は閉開瞼方向の直径が演算される。演算の結果により閉
瞼や開瞼及びそれらの量が分かるので、この演算を所定
の時間（数十分の１秒）間隔で行い、これを出力すると
経時的な閉開瞼の状態、すなわち瞬きや半瞬きが検出さ
れる。According to the first aspect of the present invention, the subject is seated on a chair, and, for example, a range from the mouth of the subject's face to the forehead is photographed by the video camera. The captured video signal is input to the computer via the image input device, and the image is displayed on the CRT attached to the computer. While looking at the image, a binarization level that allows the iris part including the pupil to be distinguished from other parts is selected, and this binarization level is input by an input device attached to the computer. A measurement range (scanning range) including the anterior eye part of the eye to be inspected (one eye) is selected, and this measurement range is input to the computer from the input device. When the measurement is started by preparing as described above, the area of the iris portion including the pupil is added by adding the pixels of the black portion of the binary image of white and black (bright point and dark point) within the detection range. Alternatively, the diameter in the closed / open eyelid direction is calculated. The results of the calculation show the closed eyelids, the open eyelids, and their amounts. Therefore, if this operation is performed at a predetermined time interval (1 second for several tens of minutes) and this is output, the closed eyelid state over time, that is, blinking. And half blinks are detected.
【００１０】請求項２に記載の発明による瞬き検出シス
テムは、縦横方向の一方に沿って瞳孔を含む虹彩部分の
面積又は閉開瞼方向の直径が表示され、縦横方向の他方
に沿って経過時間が表示されるので、経時的な閉開瞼の
状態をより良く観察することができる。In the blink detection system according to the second aspect of the invention, the area of the iris portion including the pupil or the diameter in the direction of the closed eyelid is displayed along one of the vertical and horizontal directions, and the elapsed time is displayed along the other of the vertical and horizontal directions. Is displayed, the state of the closed and open eyelids over time can be better observed.
【００１１】請求項３に記載の発明による瞬き検出シス
テムは、前記演算結果が０又は所定値以下であるときを
閉瞼とし、前記演算結果から閉瞼時間と開瞼時間とを演
算し、この演算結果を出力するように構成したので、経
時的な瞬きの状態を数値的に把握することができる。In the blink detection system according to a third aspect of the present invention, the eyelid is closed when the operation result is 0 or less than a predetermined value, and the eyelid closing time and the eyelid opening time are calculated from the operation result. Since it is configured to output the calculation result, it is possible to numerically grasp the temporal blinking state.
【００１２】請求項４に記載の発明による瞬き検出シス
テムは、前記ビデオカメラにレコーダを付属させたの
で、事後適宜に撮影時における被検者の経時的な閉開瞼
の状態を観察することができる。In the blink detection system according to the fourth aspect of the present invention, since the recorder is attached to the video camera, it is possible to appropriately observe the state of the subject's closed and open eyelids with time at the time of photographing. it can.
【００１３】[0013]
【実施例】以下この発明による瞬き検出システムの好ま
しい実施例を説明する。図１はこの発明の実施例による
検出システムのブロック図、図２は瞳孔と虹彩を含む部
分に検出範囲（走査範囲）を設定した状態の被検眼前眼
部の正面図、図３は検出結果をＣＲＴに表示した例の部
分正面図、図４は図３のＣＲＴ表示の一部を拡大した状
態の部分拡大正面図、図５は検出結果をプリンタで出力
した例の平面図である。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the blink detection system according to the present invention will be described below. FIG. 1 is a block diagram of a detection system according to an embodiment of the present invention, FIG. 2 is a front view of an anterior eye part of an eye to be inspected in a state where a detection range (scanning range) is set in a portion including a pupil and an iris, and FIG. 3 is a detection result. Is a partial front view of an example in which CRT is displayed on the CRT, FIG. 4 is a partially enlarged front view of a part of the CRT display of FIG. 3, and FIG. 5 is a plan view of an example in which a detection result is output by a printer.
【００１４】図１において、１は被検者の顔ａの一部を
撮影するビデオカメラ（白黒カメラ）、２はビデオカメ
ラ１で撮影した映像を録画（タイムコード付）するＶＴ
Ｒ、３はビデオカメラ１からの映像信号をデジタル信号
に変換する画像入力装置、４は変換されたデジタル信号
を二値化するとともに、所定の時間間隔で瞳孔を含む虹
彩部分の面積又は閉開瞼方向の直径を演算処理し、これ
を出力するコンピュータである。コンピュータ４には、
入力装置であるキーボード４０、出力装置であるＣＲＴ
４１及びプリンタ４２が付属している。ビデオカメラ１
には、暗室ないし半暗室でも撮影できるように赤外線照
明装置を併設するか、あるいは赤外線カメラを使用する
ことができる。In FIG. 1, reference numeral 1 is a video camera (black and white camera) for photographing a part of the face a of the subject, and 2 is a VT for recording an image photographed by the video camera 1 (with a time code).
R is an image input device for converting the video signal from the video camera 1 into a digital signal, and 4 is for binarizing the converted digital signal, and at a predetermined time interval, the area of the iris part including the pupil or the opening / closing of the iris part. It is a computer that calculates the diameter in the eyelid direction and outputs it. Computer 4 has
Keyboard 40 as an input device, CRT as an output device
41 and printer 42 are attached. Video camera 1
An infrared illuminating device can be installed side by side or an infrared camera can be used so that images can be taken in a dark room or a semi-dark room.
【００１５】この実施例の検出システムにより、以下に
説明するような要領で瞬きを検出する。被検者を普通の
姿勢で椅子にかけさせ、被検者の顔ａから１．５〜２．
０ｍ離れた位置で、かつ被検者の視線とほぼ同じかそれ
よりもやや低いレベルにテレビカメラ１を設置する。被
検者の顎は、図示しない顎当てなどに載せて固定するの
が好ましいが、固定しなくても差し支えない。被検者に
は、顔ａから３ｍ前後離れて視線よりやや上方レベルに
予め設置した図示しない目標を見るように指示する。被
検者が顔ａを多少動かしても被検眼前眼部ａ１が撮影範
囲から外れないようにするため、被検者の顔ａの口から
額までの部分がビデオカメラ１による撮影範囲に入るよ
うにカメラ１のズームを調整する。The detection system of this embodiment detects blinks in the manner described below. The subject is put on a chair in a normal posture, and the face a of the subject is taken from 1.5 to 2.
The TV camera 1 is installed at a position 0 m away and at a level almost the same as or slightly lower than the line of sight of the subject. The examinee's chin is preferably placed on a chin rest or the like (not shown) to be fixed, but the chin may not be fixed. The subject is instructed to look at a target (not shown), which is set in advance at a level slightly above the line of sight, about 3 m away from the face a. In order to prevent the anterior ocular segment a1 of the subject's eye from moving out of the photographing range even if the subject moves his or her face a little, the portion of the subject's face a from the mouth to the forehead falls within the photographing range of the video camera 1. Adjust the zoom of the camera 1.
【００１６】キーボート４０により、被検者の氏名，年
齢，性別，カルテ番号その他の書誌的事項をコンピュー
タ４に入力する。これらはコンピュータ４に付属する図
示しないメモリに格納される。Using the keyboard 40, the name, age, sex, chart number and other bibliographical items of the subject are input to the computer 4. These are stored in a memory (not shown) attached to the computer 4.
【００１７】以上の準備の後ビデオカメラ１により撮影
を開始すると、ＶＴＲ２で録画されるとともに、撮影さ
れたビデオ信号は画像入力装置３を介してコンピュータ
４に取り込まれる。画像入力装置３は、ビデオカメラ１
から走査線の方向に連続的に入る画像情報を、１／３０
秒毎にその時点での明暗値に限定してデジタル値に変換
するように予め設定されている。コンピュータ４では予
め設定された所定のしきい値により、画像入力装置３で
変換されたデジタル信号を二値化するようにプログラム
されており、このように処理された二値画像と、二値化
されないビデオ画像とがオーバラップしてＣＲＴ４１に
表示されるようになっている。When the video camera 1 starts photographing after the above preparations, the VTR 2 records the image and the photographed video signal is taken into the computer 4 through the image input device 3. The image input device 3 is a video camera 1.
Image information that continuously enters in the direction of the scanning line from 1/30
It is set in advance so that it is converted into a digital value by limiting to the brightness value at that time every second. The computer 4 is programmed to binarize the digital signal converted by the image input device 3 according to a preset threshold value. The binarized image thus processed and the binarized image are processed. The video image that is not displayed overlaps the CRT 41 and is displayed.
【００１８】ＣＲＴ４１に表示された画像を観察しなが
ら、瞳孔及び虹彩と他の部分とを区別することができる
しきい値を選択してキーボード４０からコンピュータ４
に入力すると、以後はこの新たなしきい値で二値化され
る。表示された画像上で、図２のように被検眼前眼部ａ
１の瞳孔と虹彩とを含む一定の四角の測定範囲ａ２を設
定すると、この測定範囲ａ２内における画素の着色され
た点（暗い点）がコンピュータ４によって加算され、順
次図示しないメモリに格納される。While observing the image displayed on the CRT 41, a threshold value that can distinguish the pupil and the iris from other parts is selected, and the keyboard 40 and the computer 4 are selected.
After that, the binarization is performed with this new threshold value. On the displayed image, as shown in FIG. 2, the anterior segment a of the subject's eye
When a fixed square measurement range a2 including the pupil 1 and the iris is set, the colored points (dark points) of the pixels within this measurement range a2 are added by the computer 4 and sequentially stored in a memory (not shown). .
【００１９】前述の演算結果により、その時点の瞳孔を
含む虹彩の面積が明らかになるので、その面積が所定の
レベル以下に急激に減じたときを瞬き（閉瞼）として検
出することができる。そして、以上の処理手順が１／３
０秒毎に行われることによって、瞬きを経時的に検出す
ることができる。この実施例では、前述の処理手順が所
定時間（この例では最高２００秒）繰り返された後、前
記の加算結果は、ＣＲＴ４１に表示することができると
ともに、プリンタ４２から出力することができるように
プログラムされている。またこの実施例では、前記の演
算結果をコンピュータ４により微分演算して閉開瞼の変
化時間を求めるようにプログラムされている。Since the area of the iris including the pupil at that time is clarified from the above-described calculation result, it is possible to detect when the area is rapidly reduced below a predetermined level as a blink (closed eyelid). And the above processing procedure is 1/3
The blink can be detected over time by being performed every 0 seconds. In this embodiment, after the above-described processing procedure is repeated for a predetermined time (up to 200 seconds in this example), the addition result can be displayed on the CRT 41 and output from the printer 42. Is programmed. Further, in this embodiment, the computer 4 is programmed to perform a differential operation to obtain the change time of the closed and open eyelids.
【００２０】図３はこの実施例の検出システムにおける
前記演算結果をＣＲＴ４１へ経時的にグラフ化して表示
した例であり、縦軸ｂの方向には瞳孔を含む虹彩の面積
が、横軸ｃの方向には時間（秒単位）がそれぞれ表示さ
れている。演算結果が所定の値以下であったとき、すな
わち瞬きと判定されたときは、横軸ｃの部分の下方に瞬
き判定印ｄが表示されるようになっている。各瞬き判定
印ｄは幅が異なっているが、この幅の差は閉瞼時間の差
を示している。図３のグラフ化表示は、例えば図４にそ
の一部が例示してあるように、これを拡大して表示する
ことができるようになっている。図３及び図４のよう
に、演算結果を経時的にグラフ化表示することによっ
て、ハーフブリンクを含む経時的な閉開瞼の状態を観察
することができる。なお、図３及び図４には図示されて
いないが、撮影年月日、撮影の開始時間と終了時間、カ
ルテ番号、被検者の氏名，年齢，性別その他の書誌的事
項も表示されるようになっている。FIG. 3 is an example in which the above-mentioned calculation results in the detection system of this embodiment are graphically displayed on the CRT 41 with time, and in the direction of the vertical axis b, the area of the iris including the pupil is plotted on the horizontal axis c. Time (in seconds) is displayed in each direction. When the calculation result is less than or equal to a predetermined value, that is, when it is determined to be blinking, the blink determination mark d is displayed below the portion of the horizontal axis c. Although the blink determination marks d have different widths, the difference in width indicates the difference in eyelid closing time. The graphed display of FIG. 3 can be enlarged and displayed, for example, as a part thereof is illustrated in FIG. As shown in FIGS. 3 and 4, by displaying the calculation results in a graph over time, the state of the closed and open eyelids including the half blinks over time can be observed. Although not shown in FIG. 3 and FIG. 4, the bibliographical items such as the shooting date, the start time and end time of the shooting, the medical record number, the subject's name, age, sex, etc. are also displayed. It has become.
【００２１】図５はこの実施例のシステムによる測定結
果のプリンタ４２の出力の例が示されており、ｅのブロ
ックには書誌的事項、ｆのブロックには掲示的な閉開瞼
のグラフ化表示、ｇのブロックには閉開瞼の回数とその
時間、ｈのブロックには閉開瞼の最大，最小，平均の時
間がそれぞれ表示されている。ブロックｆにおいては、
横軸ｃに沿って時間が表示され、横軸ｃの上に瞬き判定
印ｄが表示されている。印ｄの幅がそれぞれ異なるのは
閉瞼している時間がそれぞれ異なっていることによる。FIG. 5 shows an example of the output of the printer 42 of the measurement result by the system of this embodiment. The block of e is a bibliographic item and the block of f is a graph of a closed closed eyelid. The number of closed eyelids and its time are displayed in the block g, and the maximum, minimum, and average times of closed eyelids are displayed in the block h. In block f,
The time is displayed along the horizontal axis c, and the blink determination mark d is displayed on the horizontal axis c. The different widths of the marks d are due to the different times for closing the eyelids.
【００２２】前記実施例の検出システムでは、瞳孔を含
む虹彩の面積を一定の時間間隔で演算するように構成さ
れているが、その閉開瞼方向の直径を演算するように構
成することができる。後者の方法によるときは、図２の
測定範囲ａ２を設定するときに、当該範囲ａ２の幅を狭
めて設定するか、あるいは当該範囲ａ２を瞳孔部分を通
る垂直線状に設定すればよい。In the detection system of the above embodiment, the area of the iris including the pupil is calculated at constant time intervals, but the diameter in the direction of the closed and open eyelids can be calculated. . In the latter method, when the measurement range a2 in FIG. 2 is set, the width of the range a2 may be narrowed or the range a2 may be set as a vertical line passing through the pupil part.
【００２３】[0023]
【発明の効果】この発明による請求項１に記載の瞬き検
出システムは、被検眼前眼部をカメラで撮影し、所定の
時間間隔で瞳孔を含む虹彩の面積又はその閉開瞼方向の
直径を演算し、これを出力するので、被検者の閉開瞼
（瞬き）の状態を経時的にかつ正確に観察することがで
きる。また、被検者が精神的に緊張しない自然な状態に
おける瞬きを検出することができる。According to the blink detection system of the first aspect of the present invention, the anterior ocular segment of the eye to be examined is photographed by the camera, and the area of the iris including the pupil or the diameter in the direction of the closed and open eyelids is determined at predetermined time intervals. Since the calculation is performed and this is output, the state of the subject's closed and open eyelids (blinks) can be accurately observed over time. Further, it is possible to detect a blink in a natural state in which the subject is not mentally nervous.
【００２４】請求項２に記載の瞬き検出システムによれ
ば、縦横方向の一方に沿って瞳孔を含む虹彩部分の面積
又は閉開瞼方向の直径が表示され、縦横方向の他方に沿
って経過時間が表示されるので、経時的な閉開瞼の状態
をより良く観察することができる。According to the blink detection system of the second aspect, the area of the iris portion including the pupil or the diameter in the direction of the closed eyelid is displayed along one of the vertical and horizontal directions, and the elapsed time is displayed along the other of the vertical and horizontal directions. Is displayed, the state of the closed and open eyelids over time can be better observed.
【００２５】請求項３に記載の瞬き検出システムによれ
ば、前記演算結果が０又は所定値以下であるときを閉瞼
とし、前記演算結果から閉瞼時間と開瞼時間とを演算
し、この演算結果を出力するように構成したので、経時
的な瞬きの状態を数値的に把握することができる。According to the blink detection system of the third aspect, when the calculation result is 0 or less than a predetermined value, the eyelid is closed, and the eyelid closing time and the eyelid opening time are calculated from the calculation result. Since it is configured to output the calculation result, it is possible to numerically grasp the temporal blinking state.
【図１】この発明の実施例による検出システムのブロッ
ク図である。FIG. 1 is a block diagram of a detection system according to an embodiment of the present invention.
【図２】瞳孔と虹彩を含む部分に検出範囲（走査範囲）
を設定した状態の被検眼前眼部の正面図である。[Fig. 2] Detection range (scanning range) in a portion including a pupil and an iris
FIG. 4 is a front view of the anterior ocular segment of the eye to be inspected in the state in which is set.
【図３】検出結果をＣＲＴに表示した例の部分正面図で
ある。FIG. 3 is a partial front view of an example in which a detection result is displayed on a CRT.
【図４】図３のＣＲＴ表示の一部を拡大した状態の部分
拡大正面図である。FIG. 4 is a partially enlarged front view showing a state in which a part of the CRT display shown in FIG. 3 is enlarged.
【図５】検出結果をプリンタで出力した例の平面図であ
る。FIG. 5 is a plan view of an example in which a detection result is output by a printer.
ａ 被検者の顔 ａ１ 被検眼前眼部 ａ２ 測定範囲 ｂ 縦軸 ｃ 横軸 ｄ 瞬き判定印 ｅ，ｆ，ｇ，ｈ ブロック １ ビデオカメラ ２ ＶＴＲ ３ 画像入力装置 ４ コンピュータ ４０ キーボード ４１ ＣＲＴ ４２ プリンタ a face of subject a1 eye anterior segment of eye a2 measurement range b vertical axis c horizontal axis d blink determination marks e, f, g, h block 1 video camera 2 VTR 3 image input device 4 computer 40 keyboard 41 CRT 42 printer
───────────────────────────────────────────────────── フロントページの続き (72)発明者 坪田 一男 千葉県船橋市西船５−26−７ (72)発明者 大槻 智宏 東京都豊島区高田３丁目24番１号 大正製 薬株式会社内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Kazuo Tsubota 5-26-7 Nishifune, Funabashi City, Chiba Prefecture (72) Inventor Tomohiro Otsuki 3-24-1 Takada, Toshima-ku, Tokyo Taisho Pharmaceutical Co., Ltd.
Claims (4)
オカメラで撮影し、このビデオカメラの映像信号を画像
入力装置によりデジタル信号に変換し、コンピュータに
より前記デジタル信号を二値化して所定の時間間隔で瞳
孔を含む虹彩部分の面積又は閉開瞼方向の直径を演算
し、その演算結果を出力することを特徴とする、瞬き検
出システム。1. A fixed region of a face including an anterior segment of an eye to be examined is photographed by a video camera, a video signal of the video camera is converted into a digital signal by an image input device, and the digital signal is binarized by a computer. A blink detection system, which calculates the area of the iris portion including the pupil or the diameter in the direction of the closed and open eyelids at predetermined time intervals, and outputs the calculation result.
いて、前記演算結果の出力は、縦横方向の一方に沿って
瞳孔を含む虹彩部分の面積又は閉開瞼方向の直径を表示
し、縦横方向の他方に沿って検出開始後の経過時間を表
示することを特徴とする、瞬き検出システム。2. The blink detection system according to claim 1, wherein the output of the calculation result indicates the area of the iris portion including the pupil or the diameter in the direction of the closed eyelid along one of the vertical and horizontal directions, and the horizontal and vertical directions. A blink detection system characterized in that the elapsed time after the start of detection is displayed along the other side.
ムにおいて、前記演算結果が０又は所定値以下であると
きを閉瞼とし、前記演算結果から閉瞼時間と開瞼時間と
を演算し、この演算結果を出力することを特徴とする、
瞬き検出システム。3. The blink detection system according to claim 1, wherein a closed eyelid is defined when the calculation result is 0 or a predetermined value or less, and a closed eyelid time and an open eyelid time are calculated from the calculation result. , Which is characterized by outputting this calculation result,
Blink detection system.
る、請求項１〜３のいずれかに記載の瞬き検出システ
ム。4. The blink detection system according to claim 1, wherein a recorder is attached to the video camera.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26649794A JP3563459B2 (en) | 1994-10-31 | 1994-10-31 | Blink detection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26649794A JP3563459B2 (en) | 1994-10-31 | 1994-10-31 | Blink detection system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08266468A true JPH08266468A (en) | 1996-10-15 |
| JP3563459B2 JP3563459B2 (en) | 2004-09-08 |
Family
ID=17431751
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26649794A Expired - Fee Related JP3563459B2 (en) | 1994-10-31 | 1994-10-31 | Blink detection system |
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| Country | Link |
|---|---|
| JP (1) | JP3563459B2 (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100404929B1 (en) * | 2001-05-09 | 2003-11-07 | 정하철 | Imaging apparatus of the eye and the face |
| JP2005211631A (en) * | 2004-01-29 | 2005-08-11 | Tomey Corporation | Timing to start measurement in ophthalmologic apparatus |
| US7986346B2 (en) | 2006-11-17 | 2011-07-26 | Canon Kabushiki Kaisha | Image capturing apparatus, control method therefor, program, and storage medium |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100404929B1 (en) * | 2001-05-09 | 2003-11-07 | 정하철 | Imaging apparatus of the eye and the face |
| JP2005211631A (en) * | 2004-01-29 | 2005-08-11 | Tomey Corporation | Timing to start measurement in ophthalmologic apparatus |
| US7986346B2 (en) | 2006-11-17 | 2011-07-26 | Canon Kabushiki Kaisha | Image capturing apparatus, control method therefor, program, and storage medium |
| US8009878B2 (en) | 2007-11-05 | 2011-08-30 | Hon Hai Precision Industry Co., Ltd. | Warning apparatus and method for avoiding eye stress |
| JP2015043929A (en) * | 2013-08-29 | 2015-03-12 | 学校法人慶應義塾 | Perception measurement evaluation device, perception measurement evaluation method, and program |
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| JP2020109522A (en) * | 2016-03-04 | 2020-07-16 | マジック リープ， インコーポレイテッドＭａｇｉｃ Ｌｅａｐ，Ｉｎｃ． | Current drain reduction in ar/vr display systems |
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| JP2018166649A (en) * | 2017-03-29 | 2018-11-01 | 株式会社トプコン | Ophthalmologic apparatus |
| JP2018166650A (en) * | 2017-03-29 | 2018-11-01 | 株式会社トプコン | Ophthalmologic apparatus |
| JP2018051340A (en) * | 2017-11-24 | 2018-04-05 | 株式会社トプコン | Ophthalmologic apparatus |
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| US11966059B2 (en) | 2022-10-07 | 2024-04-23 | Magic Leap, Inc. | Virtual and augmented reality systems and methods |
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