JPH05157704A - Impurity recognition device - Google Patents

Impurity recognition device

Info

Publication number
JPH05157704A
JPH05157704A JP3320396A JP32039691A JPH05157704A JP H05157704 A JPH05157704 A JP H05157704A JP 3320396 A JP3320396 A JP 3320396A JP 32039691 A JP32039691 A JP 32039691A JP H05157704 A JPH05157704 A JP H05157704A
Authority
JP
Japan
Prior art keywords
impurity
color
ratio
impurities
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.)
Withdrawn
Application number
JP3320396A
Other languages
Japanese (ja)
Inventor
Junko Ogawa
純子 尾川
Kazuo Shimizu
一夫 清水
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Olympus Corp
Original Assignee
Olympus Optical Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Olympus Optical Co Ltd filed Critical Olympus Optical Co Ltd
Priority to JP3320396A priority Critical patent/JPH05157704A/en
Publication of JPH05157704A publication Critical patent/JPH05157704A/en
Withdrawn legal-status Critical Current

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  • Closed-Circuit Television Systems (AREA)
  • Image Analysis (AREA)
  • Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
  • Image Processing (AREA)

Abstract

PURPOSE:To enable an impurity to be inspected accurately according to a color data and at the same time a load for an inspector to be greatly reduced regardless of light intensity of a sample to be inspected. CONSTITUTION:A title item is provided with a color TV camera 2 which picks up an enlarged image of a sample to be inspected which is set to a stage of a microscope 1, an image input device 3 for latch an image data which is picked up by the TV camera, and a computer 4 which obtains a ratio where a color constituent of each impurity occupies for a total value of all color constituents of the impurity based on the image data which is input from the image input device 3. Furthermore, it is provided with a setter 5 which sets a range of an allowable value for a ratio of each color constituent which is obtained by this computer 4 and a CRT display 6 which judges presence or absence of impurity depending on whether the ratio of each color constituent of the impurity which is obtained by the operation part is within a range of allowable value which is set by the setter 5 and then performs its binary coding and displays the impurity.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明はプラスチック部品等の被
検査試料の不純物検査に用いられる不純物認識装置に関
するものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an impurity recognizing device used for inspecting impurities in a sample to be inspected such as plastic parts.

【0002】[0002]

【従来の技術】従来、プラスチック部品の不純物を検査
するには、シート状に成形した樹脂ペレットを拡大鏡を
用いて目視観察することにより行っていた。しかし、こ
の検査方法では検査者の熟練度の違い等によって検査結
果にばらつきがあり、また目視検査であるため、極小の
異物があってもそれを発見できないという欠点があっ
た。
2. Description of the Related Art Conventionally, in order to inspect a plastic part for impurities, a resin pellet formed into a sheet shape is visually observed with a magnifying glass. However, this inspection method has a drawback in that the inspection result varies due to differences in the skill of the inspector, and since it is a visual inspection, it is impossible to find even a very small foreign matter.

【0003】そこで、最近では検査システムの自動化が
進められており、その一つに例えば特開平1−1611
38号公報のように、リング照明を用いて光を樹脂ペレ
ットに照射し、その反射光を顕微鏡およびカメラを介し
て検出し、その強度から異物の有無を判定する異物検査
方法がある。しかし、この検査方法は反射光の強度から
異物の有無を判定しているため、ペレット部品の表面に
凹凸がある場合にはその効果を発揮し得るが、表面に凹
凸がない部品に対しては反射光の強度に差がないので異
物の検査が不可能である。
Therefore, recently, automation of the inspection system has been promoted, and one of them is, for example, Japanese Patent Laid-Open No. 1611/1991.
As disclosed in Japanese Patent No. 38, 38, there is a foreign substance inspection method in which light is applied to a resin pellet using ring illumination, the reflected light is detected through a microscope and a camera, and the presence or absence of a foreign substance is determined from the intensity thereof. However, since this inspection method determines the presence or absence of foreign matter from the intensity of the reflected light, it can exert its effect when the surface of the pellet component has irregularities, but for parts that do not have irregularities on the surface. Since there is no difference in the intensity of the reflected light, it is impossible to inspect foreign matter.

【0004】[0004]

【発明が解決しようとする課題】このように従来の検査
者による不純物検査方法では、顕微鏡で全数検査を行な
わなければならないため、検査結果にばらつきがあるば
かりでなく、多大な労力と時間を要する欠点があり、ま
た反射光の強度から異物の有無を判定するようにした自
動化による異物検査システムでは、表面に凹凸がない被
検査部品に対しては反射光の強度に差がないので異物の
検査ができないという問題があった。
As described above, in the conventional method for inspecting impurities by an inspector, it is necessary to perform 100% inspection with a microscope. Therefore, not only the inspection results vary, but also much labor and time are required. There is a defect, and in an automated foreign matter inspection system that determines the presence or absence of foreign matter based on the intensity of reflected light, there is no difference in the intensity of reflected light for inspected parts that do not have irregularities on the surface. There was a problem that I could not.

【0005】本発明は被検査試料の光強度によらず、不
純物の正確な検査ができると共に検査者に対する負担を
大幅に軽減することができる不純物認識装置を提供する
ことを目的とする。
An object of the present invention is to provide an impurity recognizing device capable of accurately inspecting impurities regardless of the light intensity of a sample to be inspected and significantly reducing the burden on an inspector.

【0006】[0006]

【課題を解決するための手段】本発明は、顕微鏡のステ
ージにセットされた被検査試料の拡大像を撮像するカラ
ーTVカメラと、このカラーTVカメラで撮像された画
像データを取込む画像入力装置と、この画像入力装置よ
り入力される画像データをもとに不純物の全色で求めら
れた不純物の個々の色成分の割合に対する許容値の範囲
を設定する設定手段と、前記演算部で求められた不純物
の個々の色成分の割合が前記設定手段で設定された許容
値の範囲内にあるか否かにより不純物を判定する判定手
段と、この判定手段での判定結果を表示する表示手段と
を備えたものである。
The present invention is directed to a color TV camera for picking up a magnified image of a sample to be inspected set on a stage of a microscope, and an image input device for taking in image data picked up by the color TV camera. And setting means for setting a range of allowable values for the ratio of individual color components of impurities obtained for all colors of impurities based on image data input from the image input device, A determination means for determining impurities based on whether or not the proportion of each color component of the impurities is within the allowable value range set by the setting means, and a display means for displaying the determination result by this determination means. Be prepared.

【0007】[0007]

【作用】このような構成の不純物認識装置にあっては、
画像入力装置よりカラーTVカメラで撮像された被検査
試料の画像データが演算部に取込まれると、この演算部
では画像データをもとに不純物の全色成分の合計値に対
する個々の色成分が占める割合が求められ、この個々の
色成分の割合が不純物の個々の色成分に対して設定され
た許容値の範囲内にあるかどうかを識別することによ
り、不純物の有無を判定することが可能となり、被検査
試料の表面に凹凸があるか否かにかかわらず、しかも検
査員の経験に頼ることなく正確に不純物の有無を検査で
きる。
In the impurity recognition device having such a structure,
When the image data of the sample to be inspected taken by the color TV camera from the image input device is taken into the arithmetic unit, the individual color components with respect to the total value of all the color components of impurities are calculated based on the image data in the arithmetic unit. It is possible to determine the presence or absence of impurities by determining the occupancy ratio and identifying whether or not the ratio of each individual color component is within the allowable range set for each individual color component of impurities. Therefore, it is possible to accurately inspect the presence or absence of impurities regardless of whether or not the surface of the sample to be inspected has irregularities and without depending on the experience of the inspector.

【0008】[0008]

【実施例】以下本発明の一実施例を図面を参照して説明
する。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

【0009】図1は本発明による不純物認識装置の構成
例を示すブロック図である。図1において、1は顕微鏡
で、この顕微鏡1はそのステージにセットされる図示し
ないプラスチック部品の拡大像を得るものである。ま
た、2はこの顕微鏡1を通して得られる拡大像を撮像す
るカラーTVカメラ、3はこのカラーTVカメラ2で撮
像された画像データを取込む画像入力装置である。さら
に、4はこの画像入力装置3より入力される画像データ
をもとに色空間の判定に必要な演算を行うコンピュー
タ、5は予め決められた不純物の個々の色成分の基準値
に基づいて不純物の個々の色成分に対する許容値を設定
してコンピュータ4に入力する設定器、6はコンピュー
タ5の演算結果を表示するCRTディスプレイである。
FIG. 1 is a block diagram showing a configuration example of an impurity recognition device according to the present invention. In FIG. 1, reference numeral 1 is a microscope, and this microscope 1 obtains an enlarged image of a plastic part (not shown) set on the stage. Further, 2 is a color TV camera for picking up an enlarged image obtained through the microscope 1, and 3 is an image input device for taking in image data picked up by the color TV camera 2. Further, 4 is a computer for performing calculations necessary for color space determination based on the image data input from the image input device 3, and 5 is an impurity based on a predetermined reference value of each color component of impurities. Is a setter for setting an allowable value for each color component and inputting it to the computer 4, and 6 is a CRT display for displaying the calculation result of the computer 5.

【0010】ここで、コンピュータ4は図2に示すよう
に画像入力装置3から入力される画像データを格納する
メモリ4−1と、このメモリ4−1より画像データを取
込んで不純物のR(赤),G(緑),B(青)の全色成
分の合計値と個々の色成分R,G,Bが占める割合を求
める演算部4−2と、この演算部4−2で求められた不
純物の各色成分の割合Δr,Δg,Δbに対して設定器
5で設定される不純物の各色成分の割合に対する許容値
の範囲内にあるかどうか判定すると共に、2値化処理し
て不純物データを抽出する判定部4−4から構成されて
いる。次に上記のように構成された不純物認識装置の作
用を図3に示すフローチャートを参照しながら述べる。
Here, as shown in FIG. 2, the computer 4 stores a memory 4-1 for storing image data input from the image input device 3 and an R () of an impurity by fetching the image data from the memory 4-1. The sum of all the color components of red), G (green), and B (blue) and the calculation unit 4-2 for calculating the ratio of the individual color components R, G, B, and the calculation unit 4-2. It is determined whether the ratios Δr, Δg, and Δb of the respective color components of the impurities are within the allowable range for the ratios of the respective color components of the impurities set by the setter 5, and the binarization process is performed to perform the impurity data. It is comprised from the determination part 4-4 which extracts. Next, the operation of the impurity recognition device configured as described above will be described with reference to the flowchart shown in FIG.

【0011】まず、顕微鏡1のステージにプラスチック
部品をセットし、カラーTVカメラ2でプラスチック部
品の画像データが画像入力装置3に取込まれると、この
画像データは一旦コンピュータ4の画像メモリ4−1に
格納される(ST1)。この画像メモリ4−1に格納さ
れた画像データが演算部4−2に取込まれると、この演
算部4−2では不純物の個々の色成分R,G,Bとその
合計値(S=R+G+B)とから、不純物の全色成分の
合計値に対する個々の色成分が占める割合Δr=R/
S,Δg=G/S,Δb=B/Sを求め(ST2)、そ
の演算結果をCRTディスプレイ5に表示する(ST
3)。
First, when the plastic part is set on the stage of the microscope 1 and the image data of the plastic part is taken into the image input device 3 by the color TV camera 2, this image data is once stored in the image memory 4-1 of the computer 4. (ST1). When the image data stored in the image memory 4-1 is fetched by the calculation section 4-2, the calculation section 4-2 calculates the individual color components R, G, B of the impurities and their total values (S = R + G + B). ) And the ratio of individual color components to the total value of all color components of impurities Δr = R /
S, Δg = G / S, Δb = B / S are obtained (ST2), and the calculation result is displayed on the CRT display 5 (ST
3).

【0012】図4はこのときのCRTディスプレイ5に
表示された画像を示すもので、10は演算結果による全
画像データであり、20は予め決められた不純物の基準
値である。ここで、不純物の全色成分の合計値に対する
R,G,Bの個々の色成分が占める割合を3次元的に表
現すると図5(a)のようになる。これを見易くするた
めに、R/S,G/Sで表示したものが図5(b)であ
り、G/S,B/Sで表示したものが図5(c)であ
り、G/S,R/Sで表示したものが図5(d)であ
る。
FIG. 4 shows an image displayed on the CRT display 5 at this time. 10 is all image data resulting from the calculation, and 20 is a predetermined reference value of impurities. Here, the ratio of the individual color components of R, G, and B to the total value of all the color components of impurities is three-dimensionally expressed as shown in FIG. In order to make it easy to see, what is displayed in R / S and G / S is FIG. 5 (b), and what is displayed in G / S and B / S is FIG. 5 (c) and G / S. , R / S is shown in FIG.

【0013】次に上記CRTデイスプレイ6に表示され
た図5(a),(b),(c)を用いて、設定器5によ
り不純物の個々の色成分に対する許容値の範囲を設定し
(ST4)、その結果についてCRTディスプレイ6に
表示する(ST5)。この場合、不純物の個々の色成分
に対する許容値を変えることで、不純物とそうでない部
分のしきい値を変えることができる。
Next, using FIG. 5 (a), (b), and (c) displayed on the CRT display 6, the setter 5 sets the range of allowable values for each color component of the impurities (ST4). ), The result is displayed on the CRT display 6 (ST5). In this case, it is possible to change the threshold values of the impurities and the other portions by changing the permissible values for the individual color components of the impurities.

【0014】このようにして不純物の各Δr,Δg,Δ
bに対するしきい値が決まると(ST6)、演算部4−
2で求められた演算結果が判定部4−3に取込まれ、こ
こで不純物の全色成分の合計値に対する個々の色成分が
占める割合が許容値の範囲内にあれば“1”、とし、範
囲外であれば“0”として不純物のデータを2値化処理
し(ST7)、これをCRTディスプレイ6に表示する
(ST8)。
Thus, each of the impurities Δr, Δg, Δ
When the threshold value for b is determined (ST6), the calculation unit 4-
The calculation result obtained in 2 is taken into the judgment unit 4-3, and if the ratio of the individual color components to the total value of all the color components of the impurities is within the allowable value range, it is set to “1”. If out of the range, the impurity data is binarized as "0" (ST7) and displayed on the CRT display 6 (ST8).

【0015】このように本実施例では、色の強度(明る
さ)に関係なく、色データを基にして自動的にプラスチ
ック部品に不純物が存在するかどうか識別できるので、
従来のように検査員に対する負担を大幅に軽減すること
ができると共に。検査員の熟練度の違いによるバラツキ
がなく、正確に不純物を検査することができ、また表面
に凹凸のない部品に対しても不純物の検査が可能とな
る。さらに、演算部4−2での処理を行うに際してアル
ゴリズムが簡単なため、高速処理が可能となる。
As described above, in this embodiment, it is possible to automatically identify whether or not impurities are present in the plastic part based on the color data regardless of the color intensity (brightness).
As well as being able to reduce the burden on the inspector as before. It is possible to inspect impurities accurately without variations due to differences in the inspector's skill level, and it is possible to inspect impurities even for parts having no unevenness on the surface. Further, since the algorithm is simple when performing the processing in the arithmetic unit 4-2, high speed processing is possible.

【0016】なお、上記実施例ではプラスチック部品に
不純物が存しているか否かを検査する場合について述べ
たが、他の部品を検査する場合にも同様にして実施でき
ることは言うまでもない。
In the above-mentioned embodiment, the case of inspecting whether or not impurities are present in the plastic part has been described, but it goes without saying that the same can be done when inspecting other parts.

【0017】[0017]

【発明の効果】以上述べたように本発明によれば、被検
査試料の光強度によらず、不純物の正確な検査ができる
と共に、検査者に対する負担を大幅に軽減することがで
きる不純物認識装置を提供できる。
As described above, according to the present invention, it is possible to accurately inspect impurities regardless of the light intensity of the sample to be inspected and to significantly reduce the burden on the inspector. Can be provided.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明による不純物識別装置の一実施例を示す
ブロック図。
FIG. 1 is a block diagram showing an embodiment of an impurity identifying device according to the present invention.

【図2】同実施例におけるコンピュータの内部処理機能
を示すブロック図。
FIG. 2 is a block diagram showing an internal processing function of a computer in the embodiment.

【図3】同実施例の作用を説明するためのフローチャー
トを示す図。
FIG. 3 is a view showing a flowchart for explaining the operation of the embodiment.

【図4】同実施例において、CRTディスプレイに表示
されるプラスチック部品の画像データを示す図。
FIG. 4 is a diagram showing image data of a plastic part displayed on a CRT display in the embodiment.

【図5】同じくCRTディスプレイに表示されるプラス
チック部品の画像データを色空間として示す図。
FIG. 5 is a diagram showing image data of a plastic part displayed on a CRT display as a color space.

【符号の説明】[Explanation of symbols]

1……顕微鏡、2……カラーTVカメラ、3……画像入
力装置、4……コンピュータ、4−1……画像メモリ、
4−2……演算部、4−3……判定部、5……設定器、
6……CRTディスプレイ。
1 ... Microscope, 2 ... Color TV camera, 3 ... Image input device, 4 ... Computer, 4-1 ... Image memory,
4-2 ... Calculation unit, 4-3 ... Judgment unit, 5 ... Setting device,
6 ... CRT display.

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】 顕微鏡のステージにセットされた被検査
試料の拡大像を撮像するカラーTVカメラと、このカラ
ーTVカメラで撮像された画像データを取込む画像入力
装置と、この画像入力装置より入力される画像データを
もとに不純物の全色成分の合計値に対する個々の色成分
が占める割合を求める演算部と、この演算部で求められ
た不純物の個々の色成分の割合に対する許容値の範囲を
設定する設定手段と、前記演算部で求められた個々の不
純物の色成分の割合が前記設定手段で設定された許容値
の範囲内にあるか否かにより不純物の有無を判定する判
定手段と、この判定手段での判定結果を表示する表示手
段とを備えたことを特徴とする不純物認識装置。
1. A color TV camera for picking up an enlarged image of a sample to be inspected set on a stage of a microscope, an image input device for taking in image data picked up by this color TV camera, and an input from this image input device. Based on the image data to be calculated, the calculation unit for obtaining the ratio of each color component to the total value of all the color components of the impurity, and the range of allowable values for the ratio of each color component of the impurity obtained by this calculation unit Setting means for setting, and a determining means for determining the presence or absence of impurities depending on whether or not the ratio of the color components of the individual impurities obtained by the computing unit is within the range of the allowable value set by the setting means. An impurity recognition apparatus comprising: a display unit that displays the determination result of the determination unit.
JP3320396A 1991-12-04 1991-12-04 Impurity recognition device Withdrawn JPH05157704A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3320396A JPH05157704A (en) 1991-12-04 1991-12-04 Impurity recognition device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3320396A JPH05157704A (en) 1991-12-04 1991-12-04 Impurity recognition device

Publications (1)

Publication Number Publication Date
JPH05157704A true JPH05157704A (en) 1993-06-25

Family

ID=18121005

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3320396A Withdrawn JPH05157704A (en) 1991-12-04 1991-12-04 Impurity recognition device

Country Status (1)

Country Link
JP (1) JPH05157704A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004045110A (en) * 2002-07-10 2004-02-12 Toyota Motor Corp Method and apparatus for measuring color ratio of plastic molding and method for re-toning plastic fragments
JP2010223933A (en) * 2009-02-25 2010-10-07 Fuji Electric Systems Co Ltd Device for producing discrimination condition of color space and image inspecting device using the same
WO2013145163A1 (en) * 2012-03-28 2013-10-03 日本たばこ産業株式会社 Cigarette filter inspection device and inspection method thereof

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004045110A (en) * 2002-07-10 2004-02-12 Toyota Motor Corp Method and apparatus for measuring color ratio of plastic molding and method for re-toning plastic fragments
JP2010223933A (en) * 2009-02-25 2010-10-07 Fuji Electric Systems Co Ltd Device for producing discrimination condition of color space and image inspecting device using the same
WO2013145163A1 (en) * 2012-03-28 2013-10-03 日本たばこ産業株式会社 Cigarette filter inspection device and inspection method thereof

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