JPS63248290A - High accuracy appearance inspecting method by video - Google Patents
High accuracy appearance inspecting method by videoInfo
- Publication number
- JPS63248290A JPS63248290A JP8248387A JP8248387A JPS63248290A JP S63248290 A JPS63248290 A JP S63248290A JP 8248387 A JP8248387 A JP 8248387A JP 8248387 A JP8248387 A JP 8248387A JP S63248290 A JPS63248290 A JP S63248290A
- Authority
- JP
- Japan
- Prior art keywords
- inspection
- area
- sensitivity
- inspected
- mask
- 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
- 238000000034 method Methods 0.000 title claims description 13
- 238000007689 inspection Methods 0.000 claims abstract description 39
- 230000035945 sensitivity Effects 0.000 abstract description 19
- 230000000873 masking effect Effects 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000001514 detection method Methods 0.000 description 2
- 239000003814 drug Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Landscapes
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
- Closed-Circuit Television Systems (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、２台のビデオカメラから得られるビデオ信号
を演算することによって、被検査物の表裏を選別、判別
することなく、予め設定された検査レベルで被検査物の
外観を高精度に検査することができる高精度外観ビデオ
検査法に関する。DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention is capable of detecting a preset image by calculating video signals obtained from two video cameras, without having to sort or distinguish between the front and back sides of an object to be inspected. The present invention relates to a high-precision external appearance video inspection method that can inspect the external appearance of an object to be inspected with high precision at a high inspection level.
（従来の技術）
例えば、固形医薬品なる刻印錠（識別マークを刻印した
もの）、印刷錠（職別マークを印刷したもの）が被検査
物である場合、これらの外観検査には、光学照明系によ
って刻印の影響を極力少なくして検査する方法があり、
特に印刷錠に対しては座標変換やマスキング法が採られ
ている（例えば、特公昭５６−６７５６７号参照）。(Prior art) For example, when the objects to be inspected are engraved tablets (engraved with identification marks) and printed tablets (printed with occupational marks), which are solid pharmaceuticals, an optical illumination system is used to inspect their appearance. There is a method of inspection that minimizes the influence of the stamp.
In particular, coordinate transformation and masking methods are used for printed tablets (for example, see Japanese Patent Publication No. 56-67567).
（発明が解決しようとする問題点）
しかしながら、上記従来の検査方法にあっては、刻印或
いは印字（以下、マークと称する）によるビデオ信号レ
ベルを限界とした感度設定とならざるを得ないため、無
マーク面側での検査感度が低く、また識別マークを備え
ていない無刻印錠又は無印刷錠が混入していても判別す
ることができない等の問題がある。(Problems to be Solved by the Invention) However, in the conventional inspection method described above, the sensitivity must be set with the video signal level as the limit by marking or printing (hereinafter referred to as mark). There are problems such as low inspection sensitivity on the unmarked side and inability to distinguish even if unengraved tablets or unprinted tablets without identification marks are mixed in.
そこで、マーク面側の検査レベルと無マーク面側の検査
レベルとを異ならしめて検査する方法が考えられるが、
そのためには被検査面がマーク面であるか無マーク面で
あるかを事前に判別する必要が生ずる。然るに、通常、
錠剤（よ生産工程においてランダムにライン上を流れて
くるため、予めマーク面か無マーク面のいずれであるか
を判別して整えることは至難であり、又それを実施する
ための機構も門雑化する。Therefore, a method can be considered in which the inspection level on the marked side and the inspection level on the unmarked side are made different.
For this purpose, it is necessary to determine in advance whether the surface to be inspected is a marked surface or a non-marked surface. However, usually
Because tablets (like tablets) flow randomly along the line during the production process, it is extremely difficult to determine in advance whether the surface is marked or unmarked and prepare the tablets, and the mechanism for carrying out this process is also complicated. become
本発明は上記問題に鑑みてなされたもので、その目的と
する処は、表裏判別のための特別の検出操作を要するこ
となく、被検査物の表裏の外観検査を高精度に行なうこ
とができろ高精度外観ビデオ検査法を提供するにある。The present invention has been made in view of the above problems, and its purpose is to be able to visually inspect the front and back sides of an object to be inspected with high accuracy without requiring any special detection operation to distinguish between the front and back sides. The purpose of the present invention is to provide a high-precision visual video inspection method.
（問題点を解決するための手段）
上記目的を達成すべく本発明は、被検査物の表裏面及び
その一方面の領域の相違に応じて検査レベルと判定基準
を予め設定しておき、２台のビデオカメラから得られる
検査用ビデオ信号の検査判定を論理演算し、この演算結
果と予め設定した判定基準とを照合することによって所
要の検査をなすようにしたことを特徴とする。(Means for Solving the Problems) In order to achieve the above object, the present invention sets inspection levels and judgment criteria in advance according to the differences in the front and back surfaces of the object to be inspected, and the areas on one side thereof. The present invention is characterized in that the inspection determination of the inspection video signal obtained from the video camera of the stand is logically operated, and the required inspection is performed by comparing the result of this operation with a preset criterion.
（作 用）
而して、被検査物の表裏面及びその一方面の領域の違い
に合わせて個別に感度設定をするため、予め被検査物を
表裏別に整列することを要することがなく被検査物の表
裏判別を行なわなくてもその外観検査を高精度に行なう
ことができることとなる。(Function) Since the sensitivity is set individually according to the difference in area between the front and back surfaces of the object to be inspected, and the area on one side, there is no need to arrange the objects to be inspected in advance according to the front and back sides. This means that the appearance of an object can be inspected with high precision without having to distinguish between the front and back sides of the object.
（実施例） 以下に本発明の実施例を添付図面に基づいて説明する。(Example) Embodiments of the present invention will be described below based on the accompanying drawings.
第１図は本発明方法を実施する検査システムの概要を示
す図、第２図（イ）は刻印錠のマーク面側平面図、同図
（ロ）はマーク面側で得られるビデオ信号画像を示す図
、第３図（イ）は同刻印錠の無マーク面側平面図、同図
（ロ）は無マーク面側で得られるビデオ信号画像を示す
図である。Figure 1 is a diagram showing an overview of the inspection system that implements the method of the present invention, Figure 2 (a) is a plan view of the marked side of the engraved lock, and Figure 2 (b) shows the video signal image obtained on the marked side. FIG. 3(a) is a plan view of the unmarked surface of the engraved tablet, and FIG. 3(b) is a diagram showing a video signal image obtained on the unmarked surface.
第１図に示す如く、被検査物たる刻印錠１の進行方向の
上下には第１カメラＸと第２カメラＹとが同−場所又は
異なった場所にそれぞれ設置されている。尚、これら第
１、第２カメラＸ、Ｙの他に、刻印錠１にストロボ光を
照射する不図示の光源、第１、第２カメラＸ、Ｙから得
られる信号を第２図（ロ）及び第３図（ロ）に示す如き
画像に変換する不図示の画像処理機が設置されており、
これらはビデオ検査機を構成している。As shown in FIG. 1, a first camera X and a second camera Y are installed at the same location or at different locations above and below the engraved lock 1, which is the object to be inspected, in the traveling direction. In addition to these first and second cameras X and Y, signals obtained from a light source (not shown) that irradiates the engraved tablet 1 with strobe light and the first and second cameras X and Y are shown in FIG. 2 (b). And an image processing machine (not shown) that converts into an image as shown in FIG. 3 (b) is installed,
These constitute a video inspection machine.
ところで、刻印錠１の一方の面（マーク面）には、第２
図（イ）に示す如く文字「Ｋ」なるマークが刻印されて
いるが、このマーク面側の文字Ｋを囲む円形領域をマス
ク内領域ａとし、それ以外の領域をマスク外領域すとす
る。而して、このマーク面側では、第２図（ロ）に示す
如く文字Ｋを囲むマスク内領域ａにおいてレベルの異な
るビデオ信号画像が得られる。By the way, on one side (marked side) of the engraved lock 1, there is a second
As shown in Figure (A), a mark with the letter "K" is engraved thereon, and the circular area surrounding the letter K on the side of the mark is assumed to be an inside mask area a, and the other areas are assumed to be an outside mask area. On this mark surface side, video signal images with different levels are obtained in the masked area a surrounding the letter K, as shown in FIG. 2(b).
他方、刻印錠１の反対側の面（無マーク面）には、第３
図（イ）□ｉと・示す如く何ら刻印は施されておらず、
この無マーク面においては同図（ロ）に示す如き同一レ
ベルのビデオ信号画像が得られる。On the other hand, on the opposite side (unmarked side) of the engraved lock 1, there is a third mark.
As shown in Figure (A) □i, there is no engraving,
On this unmarked surface, a video signal image of the same level as shown in FIG.
而して、各節１、第２カメラｘ、Ｙによって得られるビ
デオ信号画像に関しては、第２図（ロ）に示ス如く、マ
ーク面のうちのマスク内領域ａに対しては検査レベルを
Ｍａ感度に設定するのと同時にマスク外領域すに対して
は検査レベルをＭｂ感度に設定して検査レベルを各々異
にするマスキングを行ない、他方第３図（ロ）に示す如
く無マーク面側ではその全面に亘って検査レベルを同一
にするＮ感度に設定しておく。なお、通常Ｍｂ感度とＮ
感度とはほぼ同一のレベルとなる。As for the video signal images obtained by each section 1 and the second cameras x and Y, as shown in FIG. At the same time as setting the Ma sensitivity, for the area outside the mask, the inspection level is set to the Mb sensitivity and masking is performed with different inspection levels for each area, and on the other hand, as shown in Figure 3 (b), Then, the sensitivity is set to N, which makes the inspection level the same over the entire surface. In addition, the normal Mb sensitivity and N
The sensitivity is almost the same level.
斯くて、被検査物たる刻印錠１の表面と裏面の違い、表
面の領域如何（マスク内領域ａとマスク外領域ｂ）の相
違に応じて検査レベルを最適に設定することができるが
、この設定の下に２台の第１、第２カメラＸ、Ｙから得
られる検査用ビデオ信号の検査判定を論理演算し、この
演算結果と予め設定した判定基準とを照合することによ
って刻印錠１の外観検査を高精度に行うことができる。In this way, the inspection level can be optimally set according to the difference between the front and back surfaces of the engraved tablet 1, which is the object to be inspected, and the difference in the surface area (area inside the mask a and outside the mask area b). Under the settings, the inspection judgment of the inspection video signals obtained from the two first and second cameras Appearance inspection can be performed with high precision.
下表に検査結果及びそれに対する判定結果をそれぞれの
ケース（Ｃａｇｅ １〜Ｃａ５ｅ５）について示す。The table below shows the test results and the judgment results for each case (Cage 1 to Ca5e5).
尚、同表中、Ｇは良を、ＮＧは不良をそれぞれ示す。In the same table, G indicates good and NG indicates poor.
例えば、Ｃａｇｅｌについて考察するに、この場合は良
品であるにも拘らず、第１カメラＸ（例えばマーク面側
のカメラ。但し、第１カメラＸ側に必らずマーク面側が
くるとは限らない。）で得られるビデオ信号画像のＮ！
！！！度においてＮＧが発生するのは、文字にのマーク
が存在するためである。For example, considering Cagel, although it is a good product in this case, the first camera N! of the video signal image obtained with ).
! ! ! The reason why NG occurs in the text is that there is a mark on the character.
又、Ｃａ５ｅ５について考察するに、この場合はＣａ５
ｅ １の結果を合わせて考えると、全てにＧが発生する
ことは刻印錠１の両面において所定のマークが付されて
いないことを意味する。その他のＣａ５ｅ２−Ｊｃａｓ
ｅ４についても同様に考察することができる。尚、本実
施例においては、マスキングの他に、刻印錠１の全面に
亘って同一レベルのＮ感度を設定しているため、とのＮ
感度においてＮＧが生ずる側がマ −り面側であると判
定することができる。Also, considering Ca5e5, in this case Ca5
Considering the result of e1 together, the occurrence of G on all means that the predetermined mark is not attached on both sides of the engraved tablet 1. Other Ca5e2-Jcas
The same consideration can be given to e4. In this embodiment, in addition to masking, the same level of N sensitivity is set over the entire surface of the engraved lock 1.
It can be determined that the side where NG occurs in sensitivity is the marred surface side.
以上のように、被検査物なる刻印錠の表裏面及びその一
方面の領域の違いに応じて個別に感度設定（Ｍ ａ感度
、Ｍｂ感度及びＮ感度）をするようにしたため、予め刻
印錠を表裏別に整列することを要さず、従って、該刻印
錠の表裏判別を行なわなくてもその外観検査を高精度に
行なうことができる。As mentioned above, the sensitivity settings (Ma sensitivity, Mb sensitivity, and N sensitivity) are made individually according to the differences in the areas on the front and back sides and one side of the engraved tablet, which is the object to be inspected. It is not necessary to line up the front and back separately, and therefore, the appearance of the engraved tablet can be inspected with high accuracy without having to distinguish between the front and back sides.
尚、以上は特に刻印錠の検査法についてのみ言及したが
、印刷錠についても所ｉｌ１画素数を基にして判定基準
を設ければ、同様にその外観検査を高精度に行うことが
できる。Although only the inspection method for engraved tablets has been mentioned above, if a criterion is set based on the number of pixels per il1 for printed tablets, the appearance inspection can be similarly performed with high precision.
（発明の効果）
以上の説明で明らかな如く本発明によれば、被検査物の
表裏面及び煩域の違いに合わせて個別に感度設定をする
ようにしたため、表裏判別のための特別の検出手段を要
することがないばかりか、被検査物を表面同士又は′Ｉ
Ｍ面同士毎に整列させる必要もなく、被検査物の外観検
査を簡易な方法でもって高精度に行なうことができると
いう効果が得られる。(Effects of the Invention) As is clear from the above explanation, according to the present invention, the sensitivity is set individually according to the front and back surfaces of the object to be inspected and the difference in the area, so special detection for front and back discrimination is performed. Not only does it not require any means, but the objects to be inspected are
There is no need to align the M planes with each other, and the appearance inspection of the object to be inspected can be performed with high accuracy using a simple method.
第１図は本発明の方法を実施する検査システムの概要を
示す図、第２図（イ）は刻印錠のマーク面側平面図、同
図（ロ）は同マーク面側で得られるビデオ信号画伸を示
す図、第３図（イ）は同刻印錠の無マーク面側平面図、
同図（０）は同無マーク面側で得られるビデオ信号画性
を示す図である。
符号の説明
１・・・刻印錠 ａ・・・マスク内領域ｂ
・・マスク外領域
Ｘ、Ｙ・・・第１、第２カメラ
第１図
第２図 第３図Fig. 1 is a diagram showing an outline of an inspection system that implements the method of the present invention, Fig. 2 (a) is a plan view of the marked side of the engraved lock, and Fig. 2 (b) is a video signal obtained on the marked side. Figure 3 (a) is a plan view of the unmarked side of the engraved lock;
Figure (0) is a diagram showing the video signal quality obtained on the unmarked surface side. Explanation of symbols 1... Stamped lock a... Area inside the mask b
... Area outside the mask X, Y ... 1st and 2nd cameras Figure 1 Figure 2 Figure 3
Claims (1)
検査レベルと判定基準を予め設定しておき、２台のビデ
オカメラから得られる検査用ビデオ信号の検査判定を論
理演算し、この演算結果と予め設定した判定基準とを照
合することによって所要の検査をなすようにしたことを
特徴とする高精度外観ビデオ検査法。Inspection levels and judgment criteria are set in advance according to the differences between the front and back surfaces of the object to be inspected, as well as the areas on one side, and the inspection judgments of the inspection video signals obtained from two video cameras are logically calculated. A high-precision external appearance video inspection method characterized in that a required inspection is performed by comparing calculation results with preset criteria.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62082483A JPH0693776B2 (en) | 1987-04-03 | 1987-04-03 | High-precision appearance video inspection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62082483A JPH0693776B2 (en) | 1987-04-03 | 1987-04-03 | High-precision appearance video inspection method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63248290A true JPS63248290A (en) | 1988-10-14 |
| JPH0693776B2 JPH0693776B2 (en) | 1994-11-16 |
Family
ID=13775759
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62082483A Expired - Lifetime JPH0693776B2 (en) | 1987-04-03 | 1987-04-03 | High-precision appearance video inspection method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0693776B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0674914A (en) * | 1992-06-23 | 1994-03-18 | Nkk Corp | Surface defect inspecting device |
| JP2004317188A (en) * | 2003-04-14 | 2004-11-11 | Ckd Corp | Visual inspection apparatus and ptp packaging machine |
| JP2006208065A (en) * | 2005-01-26 | 2006-08-10 | Ckd Corp | Defect inspection device and ptp packing machine |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102713579B (en) * | 2009-12-11 | 2014-12-10 | 第一实业视检***股份有限公司 | Appearance inspection device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60235043A (en) * | 1984-05-08 | 1985-11-21 | Nippon Denso Co Ltd | Apparatus for inspecting appearance inferiority |
| JPS6147541A (en) * | 1984-08-13 | 1986-03-08 | Miyuuchiyuaru:Kk | Method for inspecting outer surface of solid substance |
-
1987
- 1987-04-03 JP JP62082483A patent/JPH0693776B2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60235043A (en) * | 1984-05-08 | 1985-11-21 | Nippon Denso Co Ltd | Apparatus for inspecting appearance inferiority |
| JPS6147541A (en) * | 1984-08-13 | 1986-03-08 | Miyuuchiyuaru:Kk | Method for inspecting outer surface of solid substance |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0674914A (en) * | 1992-06-23 | 1994-03-18 | Nkk Corp | Surface defect inspecting device |
| JP2004317188A (en) * | 2003-04-14 | 2004-11-11 | Ckd Corp | Visual inspection apparatus and ptp packaging machine |
| JP2006208065A (en) * | 2005-01-26 | 2006-08-10 | Ckd Corp | Defect inspection device and ptp packing machine |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0693776B2 (en) | 1994-11-16 |
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