WO2015198401A1 - Procédé de réglage d'état d'inspection pour élément de fermeture et procédé d'inspection d'élément de fermeture - Google Patents

Procédé de réglage d'état d'inspection pour élément de fermeture et procédé d'inspection d'élément de fermeture Download PDF

Info

Publication number
WO2015198401A1
WO2015198401A1 PCT/JP2014/066732 JP2014066732W WO2015198401A1 WO 2015198401 A1 WO2015198401 A1 WO 2015198401A1 JP 2014066732 W JP2014066732 W JP 2014066732W WO 2015198401 A1 WO2015198401 A1 WO 2015198401A1
Authority
WO
WIPO (PCT)
Prior art keywords
fastener element
fastener
color
luminance value
calculated
Prior art date
Application number
PCT/JP2014/066732
Other languages
English (en)
Japanese (ja)
Inventor
満保 福澤
諒 関野
貴博 福山
幸一 見角
淳 清原
吉村　泰治
徹也 勝見
Original Assignee
Ykk株式会社
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 Ykk株式会社 filed Critical Ykk株式会社
Priority to PCT/JP2014/066732 priority Critical patent/WO2015198401A1/fr
Priority to CN201480078766.XA priority patent/CN106461566B/zh
Priority to TW104120368A priority patent/TWI550526B/zh
Publication of WO2015198401A1 publication Critical patent/WO2015198401A1/fr

Links

Images

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/88—Investigating the presence of flaws or contamination

Definitions

  • This invention relates to a fastener element inspection condition setting method and a fastener element inspection method for evaluating the quality of a product by detecting the color of the surface of a fastener element of a slide fastener.
  • Patent Document 1 an inspection method as disclosed in Patent Document 1 has been proposed as a technique for measuring the surface of a product in a metal product, converting the color state into a numerical value, and quantitatively evaluating it.
  • the inspection method disclosed in Patent Literature 1 divides a captured image of a surface of a metal material such as a steel material into predetermined areas and each color of red (R), green (G), and blue (B), which are the three primary colors of light. Information is acquired, the acquired information is digitized, a non-corrosive surface is extracted from the surface of the metal material in comparison with the information acquired in advance, and the numerical range of the color mixture amount ratio of the non-corrosive surface is calculated.
  • the corroded portion of each divided surface is extracted, the area ratio of the extracted corroded portion is calculated with respect to the imaged metal surface area, and the deterioration degree of the metal surface is calculated based on the area ratio of the corroded portion. Evaluating.
  • the process of extracting the non-corrosion surface is performed in the first stage and the first stage of extracting the non-corrosion surface by comparing the digitized data of each divided surface with the digitized data of the corroded surface acquired in advance.
  • the non-corroded surface digitized data is evaluated based on the Mahalanobis distance as a criterion, and a second step of determining a surface having a predetermined Mahalanobis distance as a non-corroded surface is provided.
  • Patent Documents 2 and 3 also propose an inspection device that obtains information on the three primary colors of light on the surface of a metal material such as steel, and discriminates between non-defective products and defective products based on the ratio of the values of each color component. Has been.
  • Patent Document 4 discloses a method of identifying a rust color region by converting a RGB color system to an L * a * b * color system and extracting pixels having a predetermined value. Further, in Patent Document 5, an RGB signal is obtained by color photographing the surface to be inspected, and the RGB signal is converted into a uniform color space signal of the L * a * b * color system by a signal conversion unit.
  • a surface inspection apparatus for obtaining a colored image and detecting a colored wrinkle on the surface based on the obtained image is disclosed.
  • JP 2007-256050 A JP 2003-216930 A JP 2012-149944 A JP 2005-291984 A JP 2005-233826 A
  • Patent Documents 1-5 the surface of a large material such as a steel material integrally formed of the same kind of material is photographed, and the image is processed. A sufficient amount of image information can be obtained relatively easily for the inspection object.
  • the present invention has been made in view of the above-described background art, and provides a fastener element inspection condition setting method and a fastener element inspection method capable of accurately and stably evaluating the quality of a fastener element of a slide fastener.
  • the purpose is to provide.
  • the present invention relates to the quality of the surface of the fastener element based on an image obtained by photographing the fastener element using a camera that photographs the surface of the fastener element of the slide fastener and an illumination device that illuminates the fastener element.
  • a fastener element inspection condition setting method for determining a plurality of control factors that affect an image captured by the camera, and setting a plurality of predetermined conditions for each control factor, For each of the fasteners, a photographing step of simultaneously photographing the plurality of fastener elements of the slide fastener under the plurality of conditions of the factor, and a plurality of color images obtained by photographing the plurality of fastener elements obtained by the camera.
  • Image extraction process to extract color image data in individual unit area for each element
  • a luminance value calculating step for obtaining a luminance value for each of the three primary colors of light for each pixel of the color image data in the unit area of each fastener element, and 3 of the light calculated in the luminance value calculating step.
  • An error pressure calculating step for calculating an error pressure of the color of the fastener element based on the luminance value for each primary color, and each fastener element for each setting condition of each control factor based on the error pressure obtained.
  • a fastener element inspection comprising: a control factor selection step of calculating an SN ratio and sensitivity of a color of the color and selecting a setting condition of the control factor having a relatively large value from the calculated SN ratio and sensitivity This is a condition setting method.
  • the luminance value for each of the three primary colors of light for each pixel of the color image data is calculated.
  • the error value is calculated by obtaining a characteristic value that is a ratio to the average value.
  • the color of the surface of the fastener element is obtained based on an image obtained by photographing the fastener element using a camera that photographs the surface of the fastener element of the slide fastener and an illumination device that illuminates the fastener element.
  • a fastener element inspection method for determining pass / fail wherein a plurality of control factors that affect an image captured by the camera are selected, optimal conditions for inspection are set for each control factor, and An imaging step of simultaneously photographing the plurality of fastener elements of the slide fastener under the plurality of conditions, and a color image obtained by photographing the plurality of fastener elements obtained by the camera, for each fastener element.
  • a fastener element inspection method comprising: a determination step of determining whether the color of the surface of the fastener element is good by comparing a value relating to the color of the fastener element calculated based on the value with a predetermined threshold value.
  • the determination step calculates an error pressure of the color of the fastener element based on the luminance value for each of the three primary colors of light calculated in the luminance value calculation step, and based on the obtained error pressure, The color of the surface of the fastener element is determined.
  • the optimum condition for each control factor in the imaging step is selected and set in the control factor selection step by the fastener element inspection condition setting method.
  • the quality of the slide fastener element color can be automatically and quickly determined accurately, and stable and good quality control can be achieved. It can be carried out.
  • the inspection device 10 used in the fastener element inspection condition setting method and fastener element inspection method of the slide fastener according to this embodiment includes an image sensor such as a CCD or C-MOS as shown in FIG.
  • a slide fastener 20 is held by a jig 18 disposed on the stage 16 on the side opposite to the camera 12 with the illumination device 14 interposed therebetween.
  • the jig 18 includes a pair of holding portions 19 that sandwich the fastener tapes 22 on both sides of the slide fastener 20, and the element 24 of the slide fastener 20 is positioned between the holding portions 19.
  • the slide fastener 20 to be inspected here is a long string-like member formed as a slide fastener chain in the previous stage to be cut for each individual slide fastener 20, and is intermittently fed on the jig 18. Thus, the element 24 is photographed by the photographing method described later.
  • an inspection device 30 including the ring illumination device 32 shown in FIG. prepare.
  • the light emitting surface of the illumination device 32 is orthogonal to the optical axis of the camera 12, and the center of the ring of the illumination device 32 is located concentrically with the optical axis of the camera 12.
  • the images taken by the inspection apparatuses 10 and 30 under various conditions are a plurality of elements 24 of the slide fastener 20 positioned in the center. Shooting is performed so that the element 24 is included.
  • the photographed image data is processed by a method to be described later, and the color and state of the surface of the element 24 are evaluated to determine pass / fail.
  • an inspection condition setting method for determining the fastener element inspection method of this embodiment will be described below.
  • a plurality of control factors that affect the image captured by the camera 12 are selected, a plurality of predetermined conditions are set for each control factor, and a plurality of slide fasteners 20 are respectively set according to a plurality of conditions of each control factor.
  • the image is taken in a range including the fastener element 24.
  • control factors which are inspection conditions are shown in Table 1.
  • the eight types of control factors are the basic elements of imaging: camera type (F), illumination type (C), shutter speed (A), illumination intensity (D), and camera angle. (G) and the like.
  • the number of measurement elements (B) is added in order to see the change in stability due to the increase or decrease in the number of elements to be measured within the specified range, and it is larger than the fastener element 24 in order to see the influence of the background color that is an error factor.
  • the LED idling time (H) is added.
  • condition N1 with ambient light and background color J1 and condition N2 without ambient light and background color: J2 were set to allow easy error.
  • Photographers are taken under the conditions of each level with these control factors and error factors, and the required number of photographic data is acquired.
  • the acquired photographing data does not require the respective photographing data under all the conditions in Tables 1 and 2 for each element 24.
  • the unit area is a range of a selected dimension among the three types of areas larger, equal, and smaller than the fastener element 24 according to the measurement area dimension setting of the control factor described above.
  • the luminance value for each of the three primary colors of light for each pixel of the color image data in the unit area of each fastener element 24 is obtained. Further, with respect to the image data for each pixel in the unit area of each fastener element 24 of the image photographed by the camera 12, the characteristic value y kn (k is a sample number, obtained from the luminance value of each pixel for each RGB). Is the feature value No. of the sample). Based on this characteristic value, the error pressure of each sample is calculated by the following equations (1) to (7). The erroneous pressure may be obtained for each slide fastener 20 or for each fixed length of the fastener tape 22.
  • the erroneous pressure value of the luminance value of the slide fastener element 24 is obtained for each sample based on the equation (7).
  • the obtained error pressures are D (1) to D (k)
  • the discoloration processing amounts X 1 to X k of the element 24 of the slide fastener 20 of each sample are set for the error factors N1 and N2 of the measurement environment.
  • an erroneous pressure was obtained for each slide fastener 20.
  • the discoloration processing amount is a value obtained by stepwise discoloration of the surface of the fastener element 24 in advance in order to set the inspection condition of the fastener element 24. It is a thing. This sample takes data for setting inspection conditions before actual inspection, and is used for a verification experiment described later. Table 3 shows the correspondence between the amount of color change processing and the erroneous pressure obtained in this way.
  • the error pressure is calculated as described above from the luminance value for each RGB obtained from the photographed image for the above eight types of control factors, and further based on formulas (17) and (18). Then, the SN ratio and sensitivity are calculated, and the optimum condition of the control factor is selected from these values.
  • the optimum conditions for each control factor selected from the S / N ratio and sensitivity are selected from the values of S / N ratio and sensitivity as shown in the experimental results shown in FIGS. 4 and 5 described later. The factors shown in FIGS. Select based on effect chart.
  • the circles and circles shown in the factor and effect diagrams of FIGS. 4 and 5 indicate combinations of optimum conditions that increase the S / N ratio and sensitivity ( ⁇ ), and combinations of worst conditions that cause a relatively low S / N ratio and sensitivity ( ⁇ ). It shows with.
  • the setting condition indicated by a circle is set as the optimum condition for product inspection.
  • the dome type illumination shown in FIG. 1 is more preferable than the ring type illumination device shown in FIG. 2 in terms of sensitivity, and the measurement area size is equal to the fastener element 24 in this embodiment.
  • good results were obtained for the SN ratio.
  • the conditions for obtaining good results are obtained from the SN ratio and sensitivity.
  • the level of each control factor is set to the selected optimal condition.
  • the fastener element 24 is photographed.
  • color image data in each unit area for each fastener element 24 is extracted from the obtained color image of the plurality of fastener elements 24, and each color image data in the unit area of each fastener element 24 is extracted.
  • Luminance values for the three primary colors of light for each pixel are obtained, and based on the calculated luminance values for the three primary colors of light, the color error pressure of the fastener element 24 is calculated by the same calculation process as described above. Then, based on the obtained error pressure, whether the color of the surface of the fastener element 24 is good or not is determined based on whether the error pressure is a certain value or less.
  • the determination may be performed by performing color evaluation from other color evaluation, for example, a value of the L * a * b * color system, under the measurement conditions based on the optimum control factor without calculating the erroneous pressure.
  • the quality of the fastener element 24 of the slide fastener 20 can be objectively and quantitatively determined, and automatically and quickly.
  • the quality of the surface color can be determined, and good quality control can be performed stably.
  • the fastener element inspection condition setting method and fastener element inspection method of the present invention are not limited to the above-described embodiment, and control factors and error factors can be set as appropriate, and the number of factors can be selected as appropriate. It is a thing.
  • Table 5 shows the optimum conditions calculated based on the S / N ratio and sensitivity obtained in the L18 orthogonal table experiment used in the present invention, the worst-case S / N ratio and the estimated value and gain of the sensitivity, and the confirmation experiment. The result and gain of the signal to noise ratio and sensitivity are shown.
  • the gain obtained in the confirmation experiment was about 3 [db] lower in the S / N ratio than the estimated value, and the sensitivity was about 40 higher. However, the same tendency was shown, and the validity and reproducibility of the factor diagram were improved. I was able to confirm.

Landscapes

  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)

Abstract

　La présente invention comprend une caméra (12), pour capturer une image de la surface d'un élément de fermeture (24) d'une fermeture à glissière (20), et un dispositif d'éclairage (14), pour éclairer l'élément de fermeture (24). Une pluralité de facteurs de commande, qui ont une incidence sur l'image capturée par la caméra (12), sont sélectionnés, et une image de chacun d'une pluralité d'éléments de fermeture (24) est capturée simultanément dans une pluralité d'états des facteurs de commande. Des données d'image en couleur dans une région unitaire individuelle de chacun des éléments de fermeture (24) sont extraites pour une pluralité d'images en couleur capturées de la pluralité d'éléments de fermeture (24) par la caméra (12). Des valeurs de caractéristique de luminance pour chacune des trois couleurs primaires de lumière sont obtenues pour chaque pixel des données d'image en couleur des régions unitaires des éléments de fermeture (24). Une variance d'erreur dans la couleur d'un élément de fermeture (24) est calculée sur la base des valeurs de caractéristique calculées pour les trois couleurs primaires de lumière. Le rapport SN et la sensibilité des données d'image de chaque élément de fermeture (24) sont calculés pour chaque état défini des facteurs de commande sur la base de la variance d'erreur obtenue, et l'état défini d'un facteur de commande, pour lequel le rapport SN et des valeurs de sensibilité sont relativement grands, est choisi parmi les sensibilités et les rapports SN calculés.
PCT/JP2014/066732 2014-06-24 2014-06-24 Procédé de réglage d'état d'inspection pour élément de fermeture et procédé d'inspection d'élément de fermeture WO2015198401A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
PCT/JP2014/066732 WO2015198401A1 (fr) 2014-06-24 2014-06-24 Procédé de réglage d'état d'inspection pour élément de fermeture et procédé d'inspection d'élément de fermeture
CN201480078766.XA CN106461566B (zh) 2014-06-24 2014-06-24 拉链链牙的检查条件设定方法和拉链链牙检查方法
TW104120368A TWI550526B (zh) 2014-06-24 2015-06-24 Method of setting the check condition of the sprocket and the method of checking the sprocket

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2014/066732 WO2015198401A1 (fr) 2014-06-24 2014-06-24 Procédé de réglage d'état d'inspection pour élément de fermeture et procédé d'inspection d'élément de fermeture

Publications (1)

Publication Number Publication Date
WO2015198401A1 true WO2015198401A1 (fr) 2015-12-30

Family

ID=54937538

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2014/066732 WO2015198401A1 (fr) 2014-06-24 2014-06-24 Procédé de réglage d'état d'inspection pour élément de fermeture et procédé d'inspection d'élément de fermeture

Country Status (3)

Country Link
CN (1) CN106461566B (fr)
TW (1) TWI550526B (fr)
WO (1) WO2015198401A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI723659B (zh) * 2019-08-28 2021-04-01 日商Ｙｋｋ股份有限公司 拉頭組裝裝置的拉頭檢查裝置

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107373920B (zh) * 2017-07-18 2021-01-22 浙江伟星实业发展股份有限公司 一种拉链在线检错标记装置
CN109712114A (zh) * 2018-11-30 2019-05-03 无锡维胜威信息科技有限公司 一种应用于拉链缺陷检测的***及其检测方法
CN112718710B (zh) * 2020-12-30 2023-04-18 南开大学 一种基于红绿蓝三色数值分析实施铜基底污染物激光清洗的方法
CN114460104B (zh) * 2022-04-13 2022-07-12 清远市通用皮具配件有限公司 一种基于机器视觉的拉链排牙注塑质量检测***及方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06294633A (ja) * 1993-04-09 1994-10-21 Yoshida Kogyo Kk <Ykk> ファスナー自動検査方法及び検査装置
JP2004108833A (ja) * 2002-09-13 2004-04-08 Ykk Corp 物品の外観検査装置とその検査方法及び不良品の連続選別装置
JP2012108026A (ja) * 2010-11-18 2012-06-07 Ishizuka Glass Co Ltd 異物混入製品の検出方法

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7589869B2 (en) * 2006-04-28 2009-09-15 Electro Scientific Industries, Inc. Adjusting image quality using multi-wavelength light
CN201909762U (zh) * 2010-12-31 2011-07-27 广东辉丰科技股份有限公司 金属拉链缺陷自动检测装置
CN102836933B (zh) * 2011-06-20 2014-08-13 Ykk株式会社 拉头保持机构及拉头组装装置
CN102495069B (zh) * 2011-12-07 2013-03-20 广东辉丰科技股份有限公司 一种基于数字图像处理的拉链链带缺陷检测方法
CN202502056U (zh) * 2012-03-23 2012-10-24 佛山市煜丰机械有限公司 自动化光学拉链表面瑕疵检测装置
WO2014076796A1 (fr) * 2012-11-15 2014-05-22 Ykk株式会社 Appareil destiné à inspecter des produits finis provenant d'une machine de montage de curseurs

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06294633A (ja) * 1993-04-09 1994-10-21 Yoshida Kogyo Kk <Ykk> ファスナー自動検査方法及び検査装置
JP2004108833A (ja) * 2002-09-13 2004-04-08 Ykk Corp 物品の外観検査装置とその検査方法及び不良品の連続選別装置
JP2012108026A (ja) * 2010-11-18 2012-06-07 Ishizuka Glass Co Ltd 異物混入製品の検出方法

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
KOYA YANO: "Inkan Shogo eno MT System no Tekiyo", HYOJUNKA TO HINSHITSU KANRI, vol. 67, no. 1, 15 January 2014 (2014-01-15), pages 105 - 111 *
TETSUYA KATSUMI ET AL.: "Goatsu o Mochiita Sokushiki Sokutei Seido no Kojo", HINSHITSU KOGAKU KENKYU HAPPYO TAIKAI RONBUNSHU, 26 June 2014 (2014-06-26), pages 230 - 233 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI723659B (zh) * 2019-08-28 2021-04-01 日商Ｙｋｋ股份有限公司 拉頭組裝裝置的拉頭檢查裝置

Also Published As

Publication number Publication date
CN106461566B (zh) 2019-05-17
TW201608484A (zh) 2016-03-01
CN106461566A (zh) 2017-02-22
TWI550526B (zh) 2016-09-21

Similar Documents

Publication Publication Date Title
CN108445007B (zh) 一种基于图像融合的检测方法及其检测装置
JP6629455B2 (ja) 外観検査装置、照明装置、撮影照明装置
CA2989515C (fr) Mesure de couleur de pierres precieuses
JP3597439B2 (ja) 塗装された鋼材の塗装劣化の診断方法
WO2015198401A1 (fr) Procédé de réglage d&#39;état d&#39;inspection pour élément de fermeture et procédé d&#39;inspection d&#39;élément de fermeture
JP5085860B2 (ja) 木材の検査方法及び装置及びプログラム
TWI614483B (zh) 光源亮度檢測方法及系統
TWI495867B (zh) Application of repeated exposure to multiple exposure image blending detection method
JP2019002788A (ja) 金属加工面の検査方法、金属加工面の検査装置
TW200805198A (en) Measuring method and measuring device using color image
JP6969500B2 (ja) ダル仕上げ材表面の良否判定方法及び良否判定装置
WO2020130786A1 (fr) Procédé d&#39;analyse d&#39;image d&#39;inspection visuelle d&#39;un substrat pour une détermination de corrosion
JP2007248196A (ja) 分光輝度分布推定システムおよび方法
JP2006067423A (ja) 画像品質定量評価方法及びその装置
JP2005252451A (ja) 画質検査方法及び画質検査装置
JP6623599B2 (ja) 画像処理システム、画像処理装置およびプログラム
JP7411155B2 (ja) 色ムラ検査装置および色ムラ検査方法
JP2005172649A (ja) 欠陥検査装置
JP7232900B2 (ja) 画像処理基盤の水分及び光透過度測定システム、並びにこれを用いた水分及び光透過度測定方法
JP2002350355A (ja) 光沢ムラ評価装置、光沢ムラ評価方法及び該方法を実行するためのプログラムを格納したコンピュータ読み取り可能な記憶媒体
Borrino et al. Sensitivity analysis applied to ISO recommended camera color calibration methods to determine how much of an advantage, if any, does spectral characterization of the camera offer over the chart-based approach.
CN112200200A (zh) 一种led灯光颜色检测方法
JP2007010597A (ja) 表面検査装置
JP2014089156A (ja) 外観検査方法
JP2008014907A (ja) 表面評価装置及び塗装標本

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 14896141

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 14896141

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: JP