JPH0683943A - Print inspecting device - Google Patents
Print inspecting deviceInfo
- Publication number
- JPH0683943A JPH0683943A JP4232277A JP23227792A JPH0683943A JP H0683943 A JPH0683943 A JP H0683943A JP 4232277 A JP4232277 A JP 4232277A JP 23227792 A JP23227792 A JP 23227792A JP H0683943 A JPH0683943 A JP H0683943A
- Authority
- JP
- Japan
- Prior art keywords
- inspection range
- character
- image data
- inspection
- character string
- 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- Withdrawn
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- Character Input (AREA)
- Image Processing (AREA)
- Closed-Circuit Television Systems (AREA)
- Image Analysis (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、電子部品に対する印字
の良否を画像処理によって検査する印字検査装置に関す
るものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a print inspection device for inspecting the quality of printing on electronic parts by image processing.
【０００２】[0002]
【従来の技術】電子部品には一般にその型番等を表す文
字列（文字，記号，数字等の組み合わせ）が印刷或いは
刻設の方法によって印字されている。通常、この印字の
良否検査はＣＣＤカメラ及びマイクロコンピュータ等を
用いた画像処理によって行われている。2. Description of the Related Art Generally, a character string (a combination of characters, symbols, numbers, etc.) representing a model number or the like is printed on an electronic component by a printing or engraving method. Usually, this quality inspection of printing is performed by image processing using a CCD camera, a microcomputer, and the like.
【０００３】例えば、ＩＣ等の電子部品の場合には、図
７に示すように、まず電子部品Ｂの印字面をＣＣＤカメ
ラで撮像し、該画像データに基づいて電子部品Ｂの左端
のリード端子Ｂａの所定位置からＸ・Ｙ方向に夫々Ｘ
１，Ｙ１だけ離れた基点Ｋを求め、該基点Ｋを基準とし
て検査範囲Ｗを設定する。この検査範囲Ｗは、印字の際
に多少のずれ及び傾斜が文字列Ｍに生じることを考慮
し、同図に示すように文字列よりもＸ・Ｙ方向に大きな
ものが用意される。次に、検査範囲Ｗ内の画像データを
所定のしきい値に基づいて２値化し、該２値化データか
ら印字部分の画素数を計数して該計数値に基づいて良否
の判定を行う。具体的には、良品における印字部分の画
素数が２０２の場合では上記の計数値が１９０〜２５０
の範囲に入る場合に印字良として判定している。For example, in the case of an electronic component such as an IC, as shown in FIG. 7, the printed surface of the electronic component B is first imaged by a CCD camera, and the lead terminal at the left end of the electronic component B is based on the image data. X from the predetermined position of Ba in the X and Y directions, respectively
A base point K separated by 1, Y1 is obtained, and an inspection range W is set with the base point K as a reference. Considering that the character string M is slightly displaced and tilted during printing, the inspection range W is prepared to be larger than the character string in the X and Y directions as shown in FIG. Next, the image data in the inspection range W is binarized based on a predetermined threshold value, the number of pixels in the printed portion is counted from the binarized data, and the quality is judged based on the counted value. Specifically, when the number of pixels in the printed portion of a non-defective product is 202, the above count value is 190 to 250.
If it falls within the range of, it is judged as good print.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、上記従
来の印字検査方法では、検査範囲Ｗとして文字列Ｍより
も大きなものを用いているため、検査範囲Ｗを越える文
字列Ｍ全体のずれや傾斜を検査することはできても、図
８に示すように文字列Ｍ中の一文字Ｍｂに生じたずれや
一文字Ｍｅに生じた傾斜を印字不良として判定できない
欠点がある。However, in the above-described conventional print inspection method, since the inspection range W that is larger than the character string M is used, the deviation or inclination of the entire character string M that exceeds the inspection range W is not detected. Although it can be inspected, there is a drawback in that the deviation caused in one character Mb in the character string M and the inclination caused in one character Me cannot be determined as a print defect as shown in FIG.
【０００５】本発明は上記事情に鑑みて成されたもの
で、その目的とするところは、文字列中に部分的なずれ
や傾斜がある場合でもこれらを印字不良として判定でき
る印字検査装置を提供することにある。The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a print inspection apparatus capable of determining a printing error even if there is a partial deviation or inclination in a character string. To do.
【０００６】[0006]
【課題を解決するための手段】上記目的を達成するため
請求項１では、電子部品の印字面を撮像し画素毎の輝度
データ群から成る画像データを出力するカメラと、画像
データを記憶する画像データ記憶手段と、標準文字パタ
ーンを記憶する標準文字パターン記憶手段と、画像デー
タから得られる電子部品の外形に基づいて文字列中の特
定文字を包含する第１の検査範囲を設定する第１検査範
囲設定手段と、第１の検査範囲に包含される特定文字と
該文字に該当する標準文字パターンとをマッチングさせ
て特定文字の位置を検出し、該検出位置に基づいて各文
字または文字列に近接した第２の検査範囲を設定する第
２検査範囲設定手段と、第２の検査範囲内の画像データ
を所定のしきい値に基づいて２値化するデータ変換手段
と、２値化された画像データから第２の検査範囲内にお
ける印字部分の画素数を計数し、該計数値に基づいて良
否の判定を行う良否判定手段とから、印字検査装置を構
成している。In order to achieve the above object, according to claim 1, a camera for picking up an image of a printed surface of an electronic component and outputting image data consisting of a luminance data group for each pixel, and an image for storing the image data. A data storage means, a standard character pattern storage means for storing a standard character pattern, and a first inspection for setting a first inspection range including a specific character in a character string based on an outer shape of an electronic component obtained from image data. The position of the specific character is detected by matching the range setting means with the specific character included in the first inspection range and the standard character pattern corresponding to the character, and based on the detected position, each character or character string is detected. Second inspection range setting means for setting a second inspection range close to each other, data conversion means for binarizing image data in the second inspection range based on a predetermined threshold value, and binarized Counting the number of pixels printed portion of the image data in the second inspection area, and a quality judging means for judging acceptability based on the regimen numerical constitute a printing inspection apparatus.
【０００７】請求項２では、電子部品の印字面を撮像し
画素毎の輝度データ群から成る画像データを出力するカ
メラと、画像データを記憶する画像データ記憶手段と、
画像データから得られる電子部品の外形に基づいて文字
列中の特定文字を包含する第１の検査範囲を設定する第
１検査範囲設定手段と、第１の検査範囲に包含される特
定文字の重心位置を検出し、該検出位置に基づいて各文
字または文字列に近接した第２の検査範囲を設定する第
２検査範囲設定手段と、第２の検査範囲内の画像データ
を所定のしきい値に基づいて２値化するデータ変換手段
と、２値化された画像データから第２の検査範囲内にお
ける印字部分の画素数を計数し、該計数値に基づいて良
否の判定を行う良否判定手段とから、印字検査装置を構
成している。According to a second aspect of the present invention, a camera for picking up an image of the printed surface of the electronic component and outputting image data consisting of a luminance data group for each pixel, and an image data storage means for storing the image data,
First inspection range setting means for setting a first inspection range including a specific character in a character string based on an outer shape of an electronic component obtained from image data, and a center of gravity of the specific character included in the first inspection range Second inspection range setting means for detecting a position and setting a second inspection range close to each character or character string based on the detected position, and image data in the second inspection range to a predetermined threshold value. Data conversion means for binarizing based on the above, and number of pixels of the printed portion within the second inspection range from the binarized image data, and pass / fail determination means for determining pass / fail based on the counted value. Therefore, the print inspection device is configured.
【０００８】[0008]
【作用】請求項１に係る印字検査装置では、まず、画像
データから得られる電子部品の外形に基づいて文字列中
の特定文字を包含する第１の検査範囲が設定される。次
いで、この第１の検査範囲に包含される特定文字と該文
字に該当する標準文字パターンとがマッチングされて特
定文字の位置が検出され、該検出位置に基づいて各文字
または文字列に近接した第２の検査範囲が設定される。
そして、第２の検査範囲内の画像データが所定のしきい
値に基づいて２値化され、該２値化データから第２の検
査範囲内における印字部分の画素数が計数され、該計数
値に基づいて良否の判定が行われる。In the print inspection apparatus according to the first aspect, first, the first inspection range including the specific character in the character string is set based on the outer shape of the electronic component obtained from the image data. Then, the position of the specific character is detected by matching the specific character included in the first inspection range with the standard character pattern corresponding to the character, and the position of the specific character is detected based on the detected position. The second inspection range is set.
Then, the image data in the second inspection range is binarized based on a predetermined threshold value, the number of pixels of the printed portion in the second inspection range is counted from the binarized data, and the counted value is obtained. The quality is judged based on.
【０００９】請求項２に係る印字検査装置では、まず、
画像データから得られる電子部品の外形に基づいて文字
列中の特定文字を包含する第１の検査範囲が設定され
る。次いで、この第１の検査範囲に包含される特定文字
の重心位置が検出され、該検出位置に基づいて各文字ま
たは文字列に近接した第２の検査範囲が設定される。そ
して、２の検査範囲内の画像データが所定のしきい値に
基づいて２値化され、該２値化データから第２の検査範
囲内における印字部分の画素数が計数され、該計数値に
基づいて良否の判定が行われる。In the print inspection apparatus according to claim 2, first,
The first inspection range including the specific character in the character string is set based on the outer shape of the electronic component obtained from the image data. Next, the barycentric position of the specific character included in the first inspection range is detected, and the second inspection range close to each character or character string is set based on the detected position. Then, the image data in the second inspection range is binarized based on a predetermined threshold value, the number of pixels of the printed portion in the second inspection range is counted from the binarized data, and the counted value is obtained. Based on the result, the quality is judged.
【００１０】[0010]
【実施例】図１には本考案を適用した印字検査装置の構
成を示してある。同図において１はカメラ、２は画像判
定装置、３は表示装置である。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows the construction of a print inspection device to which the present invention is applied. In the figure, 1 is a camera, 2 is an image determination device, and 3 is a display device.
【００１１】カメラ１はＣＣＤ等のエリアセンサを内蔵
したもので、電子部品Ｂの印字面の画像を撮像し画素毎
の輝度データ群から成る画像データを出力する。The camera 1 has a built-in area sensor such as a CCD, and captures an image of the printed surface of the electronic component B and outputs image data consisting of a luminance data group for each pixel.
【００１２】画像判定装置２は、カメラ１を通じて得ら
れた画像データを記憶する画像データメモリ２ａと、画
像データメモリ２ａから抜き出された画像データを２値
化するデータ変換部２ｂと、２値化された画像データを
記憶する２値化データメモリ２ｃと、印字文字に対応す
る標準文字パターンを記憶した標準文字パターンメモリ
２ｄと、判定処理部２ｅとから構成されている。この判
定処理部２ｅはＣＰＵとプログラムを格納したメモリ等
を具備しており、第１，第２の検査範囲の設定と良否判
定を行う。The image determination device 2 includes an image data memory 2a for storing image data obtained through the camera 1, a data conversion unit 2b for binarizing the image data extracted from the image data memory 2a, and a binary value. It is composed of a binarized data memory 2c for storing the converted image data, a standard character pattern memory 2d for storing a standard character pattern corresponding to a print character, and a determination processing section 2e. The determination processing unit 2e includes a CPU, a memory that stores a program, and the like, and sets the first and second inspection ranges and determines the quality.
【００１３】３はＣＲＴ，ＬＣＤ等から成り、画像判定
装置２における判定結果を随時表示する。Reference numeral 3 is composed of a CRT, an LCD, etc., and displays the judgment result of the image judgment device 2 as needed.
【００１４】ここで、図２乃至図５を参照して上記印字
検査装置における印字検査の手順について説明する。The print inspection procedure in the print inspection apparatus will be described with reference to FIGS. 2 to 5.
【００１５】まず、電子部品Ｂの印字面をカメラ１で撮
像し、エリアセンサにおける画素毎の輝度データ群から
成る画像データを画像データメモリ２ａに記憶させる
（図２のｓ１，ｓ２参照）。First, the printed surface of the electronic component B is imaged by the camera 1, and image data consisting of a luminance data group for each pixel in the area sensor is stored in the image data memory 2a (see s1 and s2 in FIG. 2).
【００１６】次に、画像データメモリ２ａから画像デー
タを読み出し、該画像データに基づいて電子部品Ｂの左
端のリード端子Ｂａの所定位置からＸ・Ｙ方向に夫々Ｘ
１，Ｙ１だけ離れた基点Ｋの座標を求める（図２のｓ
３，ｓ４、図３参照）。Next, the image data is read from the image data memory 2a, and based on the image data, the X-direction and the Y-direction are respectively moved from a predetermined position of the lead terminal Ba at the left end of the electronic component B.
Calculate the coordinates of the base point K that is 1, 1, Y1 apart (s in FIG.
3, s4, see FIG. 3).
【００１７】次に、基点Ｋの座標を基準として、文字列
Ｍの左端の「Ａ」の文字Ｍａを包含する第１の検査範囲
Ｗ１を設定する（図２のｓ５、図３参照）。この第１の
検査範囲Ｗは、文字Ｍａを余裕をもって包含できるよう
に文字ＭａよりもＸ・Ｙ方向に大きなものが用意され
る。Next, the first inspection range W1 including the character Ma of the leftmost "A" of the character string M is set with reference to the coordinates of the base point K (s5 in FIG. 2, see FIG. 3). The first inspection range W is prepared to be larger than the character Ma in the X and Y directions so that the character Ma can be included with a margin.
【００１８】次に、第１の検査範囲Ｗ１に包含される文
字Ｍａに該当する「Ａ」の標準文字パターンＰを標準文
字パターンメモリ２ｄから読み出し、第１の検査範囲Ｗ
１内で標準文字パターンＰをマッチングさせて文字Ｍａ
の位置を検出する（図２のｓ６，ｓ７、図４参照）。文
字列Ｍにおける左端の文字Ｍａは電子部品毎に一定であ
るので標準文字パターンの読み出しは簡単に行なうこと
ができる。また、上記のマッチング法によれば、文字Ｍ
ａに欠け等があって字体が明瞭でない場合でも標準文字
パターンＰによって該文字Ｍａの位置を正確に割り出す
ことが可能となる。Next, the standard character pattern P of "A" corresponding to the character Ma included in the first inspection range W1 is read from the standard character pattern memory 2d, and the first inspection range W is read.
The standard character pattern P is matched in 1 to generate the character Ma.
Position is detected (see s6 and s7 in FIG. 2 and FIG. 4). Since the leftmost character Ma in the character string M is constant for each electronic component, the standard character pattern can be easily read. Further, according to the above matching method, the character M
Even if the character is not clear due to a lack of a or the like, the position of the character Ma can be accurately determined by the standard character pattern P.
【００１９】次に、文字Ｍａの位置、例えば重心位置や
縦・横輪郭位置に基づいて該文字Ｍａの向きに沿って右
方向に延びる横長の第２の検査範囲Ｗ２を設定する（図
２のｓ８、図５参照）。この第２の検査範囲Ｗ２は、Ｙ
方向の幅が文字Ｍａの縦寸法に近似し、Ｘ方向の幅が文
字Ｍａの横寸法（×文字数）と文字間隔との和に近似し
ており、文字列Ｍの外輪に合致している。Next, a horizontally elongated second inspection range W2 extending rightward along the direction of the character Ma is set based on the position of the character Ma, for example, the position of the center of gravity and the vertical and horizontal contour positions (see FIG. 2). s8, see FIG. 5). This second inspection range W2 is Y
The width in the direction is close to the vertical dimension of the character Ma, and the width in the X direction is close to the sum of the horizontal dimension (the number of characters) of the character Ma and the character spacing, which matches the outer ring of the character string M.
【００２０】次に、第２の検査範囲Ｗ２に対応する画像
データを画像データメモリ２ａから読み出し、該データ
をデータ変換部２ｂで２値化して２値化データメモリ２
ｃに記憶させる（図２のｓ９，ｓ１０，ｓ１１）。Next, the image data corresponding to the second inspection range W2 is read from the image data memory 2a, and the data is binarized by the data conversion section 2b to be binarized data memory 2
It is stored in c (s9, s10, s11 in FIG. 2).
【００２１】次に、２値化データメモリ２ｃから２値化
された画像データを読み出し、該画像データから印字部
分の画素数を計数する（図２のｓ１２、ｓ１３）。そし
て、この計数値ｎがｎ１〜ｎ２の良品範囲内にあるか否
かを比較し、範囲内にある場合には印字良、外れた場合
には印字不良の判定を行う。この印字良否の判定は良品
の画素数との差を求め、該値が所定範囲内にあるか否か
で行うようにしてもよい。印字良否の判定結果は表示装
置３に随時表示される（図２のｓ１４，ｓ１５，ｓ１
６）。Next, the binarized image data is read from the binarized data memory 2c, and the number of pixels in the printed portion is counted from the image data (s12, s13 in FIG. 2). Then, it is determined whether or not the count value n is within the non-defective range of n1 to n2, and if it is within the range, it is determined that the print is good, and if it is out of the range, the print defect is determined. This print quality determination may be performed by determining the difference from the number of non-defective pixels and determining whether the value is within a predetermined range. The print quality judgment result is displayed on the display device 3 at any time (s14, s15, s1 in FIG. 2).
6).
【００２２】つまり、第２の検査範囲Ｗ２が文字列Ｍに
近接していることから、図８のように文字列Ｍ中に部分
的なずれや傾斜がある場合には、これら文字Ｍｂ，Ｍｅ
は第２の検査範囲Ｗ２からはみ出ることになり、これに
より上記の計数値が減少して印字不良と判定されること
になる。That is, since the second inspection range W2 is close to the character string M, if there is a partial deviation or inclination in the character string M as shown in FIG.
Is out of the second inspection range W2, which decreases the count value and determines that printing is defective.
【００２３】尚、上述の実施例では、文字列に近接した
横長の第２の検査範囲を設定したものを示したが、該第
２の検査範囲は図６に示すように図５の検査範囲Ｗ２か
ら文字間隔を除外したもの、即ち文字列Ｍを構成する各
文字を個々に囲む複数の範囲群（Ｗ３）で構成してもよ
く、このような第２の検査範囲Ｗ３を設定すれば文字間
隔側へのずれを正確に掴んでより正確な良否判定を行う
ことができる。In the above-described embodiment, the horizontally long second inspection range which is close to the character string is set, but the second inspection range is the inspection range of FIG. 5 as shown in FIG. It may be configured by excluding the character spacing from W2, that is, a plurality of range groups (W3) individually enclosing each character that constitutes the character string M. If such a second inspection range W3 is set, the character is set. By accurately grasping the deviation toward the interval side, more accurate pass / fail judgment can be performed.
【００２４】また、文字列の左端文字の位置を基準とし
て第２の検査範囲を設定したものを示したが、電子部品
に印字される文字列の文字の種類及び数等は予め特定で
きるので右端や中間位置にある文字を該基準文字として
使用してもよい。Although the second inspection range is set with reference to the position of the leftmost character of the character string, the type and number of characters of the character string printed on the electronic component can be specified in advance, so the rightmost end of the character string can be specified. Alternatively, the character in the middle position may be used as the reference character.
【００２５】さらに、文字列中の特定文字の位置を標準
文字パターンとのマッチングによって検出するようにし
たものを示したが、第１の検査範囲内の文字の重心座標
を算出し該重心座標に基づいて第２の検査範囲を設定す
ることも可能であり、この場合には図１に示した標準文
字パターンメモリ２ｄ及びマッチング処理が不要とな
る。Further, the position of the specific character in the character string is detected by matching with the standard character pattern, but the barycentric coordinates of the character within the first inspection range are calculated and the barycentric coordinates are calculated. It is also possible to set the second inspection range based on this, and in this case, the standard character pattern memory 2d and the matching process shown in FIG. 1 are unnecessary.
【００２６】さらにまた、第１の検査範囲をリード端子
の所定位置を基準として設定したものを示したが、該第
１の検査範囲は部品本体の角部等を基準として設定する
ようにしてよい。Further, although the first inspection range is set with reference to the predetermined position of the lead terminal, the first inspection range may be set with reference to the corners of the component body. .
【００２７】[0027]
【発明の効果】以上詳述したように、請求項１及び２に
係る印字検査装置によれば、文字列または各文字に近接
した第２の検査範囲を再設定するようにしているので、
文字列中に部分的なずれや傾斜がある場合でもこれらを
印字不良として正確に判定することができる。As described in detail above, according to the printing inspection apparatus of the first and second aspects, the character string or the second inspection range adjacent to each character is reset.
Even if there is a partial shift or inclination in the character string, these can be accurately determined as printing defects.
【図１】印字検査装置の構成図FIG. 1 is a block diagram of a print inspection device.
【図２】印字検査に係るフローチャートFIG. 2 is a flowchart related to print inspection.
【図３】印字検査手順を示す図FIG. 3 is a diagram showing a print inspection procedure.
【図４】印字検査手順を示す図FIG. 4 is a diagram showing a print inspection procedure.
【図５】印字検査手順を示す図FIG. 5 is a diagram showing a print inspection procedure.
【図６】第２の検査範囲の他の例を示す図FIG. 6 is a diagram showing another example of the second inspection range.
【図７】従来の印字検査手順を示す図FIG. 7 is a diagram showing a conventional print inspection procedure.
【図８】従来の問題点を示す図FIG. 8 is a diagram showing conventional problems.
１…カメラ、２…画像判定装置、２ａ…画像データメモ
リ、２ｂ…データ変換部、２ｃ…２値化データメモリ、
２ｄ…標準文字パターンメモリ、２ｅ…判定処理部、Ｂ
…電子部品、Ｍ…文字列、Ｗ１…第１の検査範囲、Ｗ２
…第２の検査範囲。DESCRIPTION OF SYMBOLS 1 ... Camera, 2 ... Image determination device, 2a ... Image data memory, 2b ... Data conversion part, 2c ... Binary data memory,
2d ... Standard character pattern memory, 2e ... Judgment processing unit, B
... electronic parts, M ... character string, W1 ... first inspection range, W2
… Second inspection range.
Claims (2)
データ群から成る画像データを出力するカメラと、 画像データを記憶する画像データ記憶手段と、 標準文字パターンを記憶する標準文字パターン記憶手段
と、 画像データから得られる電子部品の外形に基づいて文字
列中の特定文字を包含する第１の検査範囲を設定する第
１検査範囲設定手段と、 第１の検査範囲に包含される特定文字と該文字に該当す
る標準文字パターンとをマッチングさせて特定文字の位
置を検出し、該検出位置に基づいて各文字または文字列
に近接した第２の検査範囲を設定する第２検査範囲設定
手段と、 第２の検査範囲内の画像データを所定のしきい値に基づ
いて２値化するデータ変換手段と、 ２値化された画像データから第２の検査範囲内における
印字部分の画素数を計数し、該計数値に基づいて良否の
判定を行う良否判定手段とを具備した、 ことを特徴とする印字検査装置。1. A camera for picking up an image of a printed surface of an electronic component and outputting image data consisting of a luminance data group for each pixel, an image data storage means for storing the image data, and a standard character pattern storage for storing a standard character pattern. Means, a first inspection range setting means for setting a first inspection range including a specific character in the character string based on an outer shape of the electronic component obtained from the image data, and an identification included in the first inspection range. Second inspection range setting for detecting the position of a specific character by matching a character with a standard character pattern corresponding to the character and setting a second inspection range close to each character or character string based on the detected position Means, data conversion means for binarizing the image data in the second inspection range based on a predetermined threshold value, and a printed portion in the second inspection range from the binarized image data. A print inspecting device, comprising: a pass / fail determination unit that counts the number of pixels and determines pass / fail based on the count value.
データ群から成る画像データを出力するカメラと、 画像データを記憶する画像データ記憶手段と、 画像データから得られる電子部品の外形に基づいて文字
列中の特定文字を包含する第１の検査範囲を設定する第
１検査範囲設定手段と、 第１の検査範囲に包含される特定文字の重心位置を検出
し、該検出位置に基づいて各文字または文字列に近接し
た第２の検査範囲を設定する第２検査範囲設定手段と、 第２の検査範囲内の画像データを所定のしきい値に基づ
いて２値化するデータ変換手段と、 ２値化された画像データから第２の検査範囲内における
印字部分の画素数を計数し、該計数値に基づいて良否の
判定を行う良否判定手段とを具備した、 ことを特徴とする印字検査装置。2. A camera for picking up an image of a printed surface of an electronic component and outputting image data consisting of a luminance data group for each pixel, an image data storage means for storing the image data, and an external shape of the electronic component obtained from the image data. First inspection range setting means for setting a first inspection range including a specific character in a character string based on the detected position, and a barycentric position of the specific character included in the first inspection range is detected, and based on the detected position Second inspection range setting means for setting a second inspection range close to each character or character string, and data conversion means for binarizing image data in the second inspection range based on a predetermined threshold value. And a pass / fail determination unit that counts the number of pixels of the printed portion in the second inspection range from the binarized image data and determines pass / fail based on the counted value. Print inspection device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4232277A JPH0683943A (en) | 1992-08-31 | 1992-08-31 | Print inspecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4232277A JPH0683943A (en) | 1992-08-31 | 1992-08-31 | Print inspecting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0683943A true JPH0683943A (en) | 1994-03-25 |
Family
ID=16936716
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4232277A Withdrawn JPH0683943A (en) | 1992-08-31 | 1992-08-31 | Print inspecting device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0683943A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007142717A (en) * | 2005-11-17 | 2007-06-07 | Keyence Corp | Image processor |
| CN106530289A (en) * | 2016-11-03 | 2017-03-22 | 刘国勇 | Code spraying definition machine vision detecting method based on lattices |
-
1992
- 1992-08-31 JP JP4232277A patent/JPH0683943A/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007142717A (en) * | 2005-11-17 | 2007-06-07 | Keyence Corp | Image processor |
| CN106530289A (en) * | 2016-11-03 | 2017-03-22 | 刘国勇 | Code spraying definition machine vision detecting method based on lattices |
| CN106530289B (en) * | 2016-11-03 | 2019-04-30 | 刘国勇 | A kind of coding clarity machine vision detection method based on dot matrix |
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