JPH0712544A - Image sensing device - Google Patents
Image sensing deviceInfo
- Publication number
- JPH0712544A JPH0712544A JP14632093A JP14632093A JPH0712544A JP H0712544 A JPH0712544 A JP H0712544A JP 14632093 A JP14632093 A JP 14632093A JP 14632093 A JP14632093 A JP 14632093A JP H0712544 A JPH0712544 A JP H0712544A
- Authority
- JP
- Japan
- Prior art keywords
- light source
- light
- image
- diffuser
- ring
- 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
- Length Measuring Devices 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、物体の表面を撮影して
画像信号を得るための撮像装置、特に、皮膚の表面を撮
影して得られた画像を画像解折することによってしみ、
そばかす、毛穴の状態を評価するに適した画像信号を出
力する撮像装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image pickup apparatus for picking up the surface of an object to obtain an image signal, and more particularly, by blurring the image obtained by picking up the surface of the skin.
The present invention relates to an image pickup device that outputs an image signal suitable for evaluating the states of freckles and pores.
【０００２】[0002]
【従来の技術】顔面のようなマクロ的な凹凸のある部位
を通常のカメラ、ビデオマイクロスコープ等で撮影する
と、凹凸のために照明のあたり方にむらが生じ、得られ
た画像にシェーディングが発生するのは避けられない。
シェーディングによる陰影が含まれる画像を通常の方法
で２値化して、皮膚表面のしみ、そばかす等の色の濃い
部分の存在場所を特定し面積を測定しようとしても、大
きな測定誤差を生じ、再現性も悪い。また、シェーディ
ングによる陰影が含まれると、しみ、そばかすの色の濃
さの数値による評価は困難である。2. Description of the Related Art When a macroscopic uneven portion such as a face is photographed by a normal camera, a video microscope, etc., unevenness occurs in the way of lighting due to the unevenness, and shading occurs in the obtained image. It is inevitable to do.
Even if an image containing shades due to shading is binarized by a normal method and the location of dark spots such as spots and freckles on the skin surface is specified to measure the area, a large measurement error occurs and the reproducibility is reproducible. Is also bad. In addition, when the shading shadows are included, it is difficult to evaluate numerically the color intensity of the spots and freckles.
【０００３】[0003]
【発明が解決しようとする課題】したがって本発明の目
的は、シェーディングのない画像を得ることのできる撮
像装置を提供することにある。SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide an image pickup apparatus capable of obtaining an image without shading.
【０００４】[0004]
【課題を解決するための手段】本発明によれば、リング
状の形状を有し、該リングの中心を通り該リングの面に
垂直な中心軸を有する光源と、該光源の前方に位置し、
該光源の前方へ放射される光を拡散させるデフューザ
と、該光源及び該デフューザを収納し、該光源の位置か
ら前方へ向かうにつれてその断面が単調に減少し前方に
開放された空間を定める内壁を有する筐体と、該中心軸
上で該光源の後方に配置され、該空間の開放部の前方に
あり該光源からの光で照明された撮像対象物の像を撮影
する撮影手段とを具備することを特徴とする撮像装置が
提供される。According to the present invention, a light source having a ring shape and having a central axis that passes through the center of the ring and is perpendicular to the plane of the ring, and is located in front of the light source. ,
A diffuser for diffusing light emitted to the front of the light source, and an inner wall that houses the light source and the diffuser and defines a space that is monotonically decreasing in cross section from the position of the light source toward the front and defines a space open to the front. And a photographing unit arranged behind the light source on the central axis and in front of the open portion of the space for photographing an image of an imaged object illuminated by light from the light source. An imaging device is provided which is characterized by the above.
【０００５】[0005]
【作用】前述の構成の採用により撮影対象物体の表面が
均一に照明され、シェーディングのない画像が得られ
る。By adopting the above-mentioned structure, the surface of the object to be photographed is uniformly illuminated and an image without shading can be obtained.
【０００６】[0006]
【実施例】図１は本発明の撮像装置の一実施例の断面図
である。光源としての閃光放電管１０はリング状をなし
ている。その背後にはリフレクタ１２が配置される。リ
フレクタ１２も同様に全体としてリング状をなしてお
り、その鏡面は閃光放電管１０からの光を面１４にむら
なく投光するように設計されている。閃光放電管１０の
前方にはやはりリング状のデフューザ１６が配置され
る。デフューザ１６は波長３５０〜７５０nmの光を拡散
透過させる。デフューザ１６は波長３５０〜７５０nmの
光を透過させる２枚のリング状クリアフィルタ１８で挟
まれて固定される。クリアフィルタ１８は放電管１０が
破損したときにガラス片が飛散しないためのプロテクタ
の役も果たす。フード２０が設けられ、リフレクタ１２
とともに光源１０からの光が直接後方へ入射しないよう
にしている。デフューザ１６とクリアフィルタ１８はフ
ード２０に固定される。デフューザ１６の前方の導光空
間２２は徐々に断面が狭くなっており、その導光空間２
２を定める内壁２４には面１４にむらなくフラッシュ光
を当てるために硫酸バリウム塗装されている。内壁２４
は凹面をなしている。リング状放電管１０の後方のリン
グの中心軸上には魚眼レンズ２６が配置され、その後方
にＣＣＤカメラ２８が配置される。1 is a sectional view of an embodiment of an image pickup apparatus of the present invention. The flash discharge tube 10 as a light source has a ring shape. The reflector 12 is arranged behind it. Similarly, the reflector 12 also has a ring shape as a whole, and its mirror surface is designed to uniformly project the light from the flash discharge tube 10 onto the surface 14. A ring-shaped diffuser 16 is also arranged in front of the flash discharge tube 10. The diffuser 16 diffuses and transmits light having a wavelength of 350 to 750 nm. The diffuser 16 is sandwiched and fixed by two ring-shaped clear filters 18 that transmit light having a wavelength of 350 to 750 nm. The clear filter 18 also serves as a protector for preventing glass fragments from scattering when the discharge tube 10 is damaged. The hood 20 is provided and the reflector 12
At the same time, the light from the light source 10 is prevented from directly entering the rear. The diffuser 16 and the clear filter 18 are fixed to the hood 20. The light guide space 22 in front of the diffuser 16 has a gradually narrower cross section.
The inner wall 24 defining 2 is coated with barium sulphate so that the surface 14 is evenly illuminated with flash light. Inner wall 24
Has a concave surface. A fisheye lens 26 is arranged on the central axis of the ring behind the ring-shaped discharge tube 10, and a CCD camera 28 is arranged behind it.
【０００７】この撮像装置を皮膚に押し当て放電管１０
を放電させると、その光及びリフレクタ１２の反射光は
デフューザ１６で拡散され、皮膚の表面をむらなく照明
する。照明された皮膚表面の像を魚眼レンズ２６により
ＣＣＤカメラ２８内のＣＣＤ素子上に結像させることに
より、シェーディングのない皮膚表面の画像の信号が得
られる。This image pickup device is pressed against the skin to form a discharge tube 10.
Is discharged, the light and the reflected light of the reflector 12 are diffused by the diffuser 16 and illuminate the surface of the skin evenly. By forming an image of the illuminated skin surface on the CCD element in the CCD camera 28 by the fisheye lens 26, a signal of the image of the skin surface without shading can be obtained.
【０００８】キャリブレーション用キャップ３０は、校
正時にはそれに設けられたピン３２と撮像装置の筐体に
設けられた穴３４とのはめ合いにより、撮像装置に固定
される。キャリブレーション用キャップ３０の内壁には
標準灰色サンプルとしてのタイル３６がはめ込まれてお
り、キャップ３０を撮像装置に装着したときタイル３６
の面が面１４に一致する。During calibration, the calibration cap 30 is fixed to the image pickup device by fitting a pin 32 provided in the cap 30 and a hole 34 provided in a casing of the image pickup device. A tile 36 as a standard gray sample is fitted on the inner wall of the calibration cap 30, and when the cap 30 is attached to the imaging device, the tile 36 is attached.
Faces coincide with face 14.
【０００９】このキャリブレーション用キャップ３０を
装着した状態で得られるタイル３６の像の輝度値を用い
て校正することにより、しみ、そばかす等の色の濃さの
数値による評価が可能になる。By calibrating using the brightness value of the image of the tile 36 obtained with the calibration cap 30 attached, it is possible to evaluate the color intensity of stains, freckles, and the like by a numerical value.
【００１０】[0010]
【発明の効果】以上述べてきたように本発明によれば、
シェーディングのない画像を得ることのできる撮像装置
が提供される。As described above, according to the present invention,
There is provided an imaging device capable of obtaining an image without shading.
【図１】本発明の一実施例を表わす断面図である。FIG. 1 is a sectional view showing an embodiment of the present invention.
１０…閃光放電管 １２…リフレクタ １６…デフューザ ２６…魚眼レンズ ２８…ＣＣＤカメラ 10 ... Flash discharge tube 12 ... Reflector 16 ... Diffuser 26 ... Fisheye lens 28 ... CCD camera
Claims (3)
を通り該リングの面に垂直な中心軸を有する光源と、 該光源の前方に位置し、該光源の前方へ放射される光を
拡散させるデフューザと、 該光源及び該デフューザを収納し、該光源の位置から前
方へ向かうにつれてその断面が単調に減少し前方に開放
された空間を定める内壁を有する筐体と、 該中心軸上で該光源の後方に配置され、該空間の開放部
の前方にあり該光源からの光で照明された撮像対象物の
像を撮影する撮影手段とを具備することを特徴とする撮
像装置。1. A light source having a ring shape and having a central axis that passes through the center of the ring and is perpendicular to the plane of the ring, and light that is positioned in front of the light source and is emitted in front of the light source. A diffuser for diffusing light, a housing having the light source and the diffuser, and a housing having an inner wall that defines a space that is open to the front and whose cross section monotonically decreases from the position of the light source toward the front, and the central axis And an image pickup unit that is arranged behind the light source and is in front of the open portion of the space and that shoots an image of an imaged object illuminated by the light from the light source.
その後方へ放射される光を前記中心軸に沿った方向へと
集光しつつ該光源の前方へ反射する曲面を有する反射鏡
をさらに具備する請求項１記載の撮像装置。2. A reflecting mirror, which is arranged behind the light source and has a curved surface that collects the light emitted from the light source to the rear in the direction along the central axis and reflects the light toward the front of the light source. The imaging device according to claim 1, further comprising:
項１または２記載の撮像装置。3. The image pickup apparatus according to claim 1, wherein the inner wall of the housing has a concave surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14632093A JPH0712544A (en) | 1993-06-17 | 1993-06-17 | Image sensing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14632093A JPH0712544A (en) | 1993-06-17 | 1993-06-17 | Image sensing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0712544A true JPH0712544A (en) | 1995-01-17 |
Family
ID=15405008
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14632093A Pending JPH0712544A (en) | 1993-06-17 | 1993-06-17 | Image sensing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0712544A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000053326A (en) * | 1998-08-10 | 2000-02-22 | W Schlafhorst Ag & Co | Method for detecting remaining thread in spinning cop winding tube and device thereof |
| WO2007102036A1 (en) * | 2006-03-08 | 2007-09-13 | Horvath Bela | Electro -optical device for screening of skin diseases |
| JP2013121409A (en) * | 2011-12-09 | 2013-06-20 | Kao Corp | Skin condition measuring apparatus and protecting cap thereof, and illuminance calibration method |
-
1993
- 1993-06-17 JP JP14632093A patent/JPH0712544A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000053326A (en) * | 1998-08-10 | 2000-02-22 | W Schlafhorst Ag & Co | Method for detecting remaining thread in spinning cop winding tube and device thereof |
| JP4536849B2 (en) * | 1998-08-10 | 2010-09-01 | ヴェー シュラーフホルスト アクチェンゲゼルシャフト ウント コンパニー | Method and apparatus for detecting residual yarn in spinning cup winding tube |
| WO2007102036A1 (en) * | 2006-03-08 | 2007-09-13 | Horvath Bela | Electro -optical device for screening of skin diseases |
| JP2013121409A (en) * | 2011-12-09 | 2013-06-20 | Kao Corp | Skin condition measuring apparatus and protecting cap thereof, and illuminance calibration method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 20011120 |