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WO1992003721A1 - Controle de vetements - Google Patents

Controle de vetements Download PDF

Info

Publication number
WO1992003721A1
WO1992003721A1 PCT/GB1991/001414 GB9101414W WO9203721A1 WO 1992003721 A1 WO1992003721 A1 WO 1992003721A1 GB 9101414 W GB9101414 W GB 9101414W WO 9203721 A1 WO9203721 A1 WO 9203721A1
Authority
WO
WIPO (PCT)
Prior art keywords
image
garment
seams
panels
inspecting
Prior art date
Application number
PCT/GB1991/001414
Other languages
English (en)
Inventor
Leonard Norton-Wayne
Siavash Abbasszadeh
Original Assignee
De Montfort University
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 De Montfort University filed Critical De Montfort University
Publication of WO1992003721A1 publication Critical patent/WO1992003721A1/fr

Links

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
    • G01N21/89—Investigating the presence of flaws or contamination in moving material, e.g. running paper or textiles
    • G01N21/8901—Optical details; Scanning details
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06H—MARKING, INSPECTING, SEAMING OR SEVERING TEXTILE MATERIALS
    • D06H3/00—Inspecting textile materials
    • D06H3/08—Inspecting textile materials by photo-electric or television means
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06H—MARKING, INSPECTING, SEAMING OR SEVERING TEXTILE MATERIALS
    • D06H3/00—Inspecting textile materials
    • D06H3/16—Inspecting hosiery or other tubular fabric; Inspecting in combination with turning inside-out, classifying, or other handling
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/36—Textiles
    • G01N33/367—Fabric or woven textiles

Definitions

  • This invention relates to inspecting garments and particularly garments such as Y-front underwear comprising garment panels separated by seams.
  • Inspection of mass-produced garments such as socks and underwear is a particularly labour-intensive operation.
  • the garments are inspected, currently, by eye for dimensional defects and to check that the correct size label is applied, for making-up defects - badly sewn or missing seams, for example, for labelling defects, colour variations and fabric defects such as holes, stains, printing defects, colour defects and others.
  • the number of personnel engaged on such inspection quite often substantially exceeds the number engaged in production.
  • the difficulty is to develop a methodology by which images can be formed and inspected automatically, sufficiently rapidly to keep pace with production, with a high detection efficiency and a low rejection rate for fault-free garments, using equipment which is not prohibitively expensive.
  • the invention comprises a method for
  • automatically inspecting garments which have panels separated by seams comprising the steps of :- forming an image from the garment, identifying the seams on the image, and inspecting the panel areas individually.
  • the invention is particularly applicable to garments in which the seams themselves have width, when the seams may also be inspected. Seams which stand proud of the adjacent panels - more generally, seams which have a z-coordinate with respect to the x,y coordinates of the garment surface - may be detected by shadows and highlights from oblique illumination.
  • the method of the invention may be adapted for inspecting Y-front underwear, which comprises panels edged with wide, raised seam and waistband structures, when it may comprise the steps of :- forming an image of the front of the garment laid flat, locating on the image the outline of the garment, locating on the image the edges of the wide, raised seam and waistband structures, and inspecting the panels and the wide, raised seam and waistband structures located on the image for faults.
  • the garment may be measured for sizing from the image of the front of the garment, and may be illuminated with front lighting to form this image, after which the garment is illuminated with oblique lighting to locate the edges of the wide, raised seam and waistband
  • the invention also comprises apparatus for automatically inspecting garments which have panels separated by seams comprising :- imaging means for forming an image of the garment, seam identifying means for identifying the seams on the image formed by the imaging means, and panel inspection means for individually
  • the imaging means may comprise an area scan video camera aimed at a background against which the garment can be laid flat and front and oblique lighting for garments so laid against the background.
  • the seam identifying means may comprise image processing means identifying highlights and shadows on an obliquely illuminated image and superimposing images thereof on a front-lit image of the garment.
  • the panel inspection means may comprise image processing means adapted to identify a panel on the image and process the same to detect faults therein according to predetermined criteria and to activate alarm or garment rejection arrangements upon fault detection.
  • the panel inspection means may be arranged to process each of a plurality of panels of the image sequentially.
  • Fault recording means may be adapted to record the occurrences of faults associated with each of a plurality of panels on a batch inspection of similar garments.
  • the apparatus may then also comprise
  • heuristic control means arranging the said plurality of panels in a sequence for inspection according to the incidence of faults for each panel recorded as the batch inspection processes.
  • Figure 1 is a general view of the apparatus
  • Figure 2 is a first image produced by the
  • FIG. 3 illustrates a processing step in
  • Figure 4 is a second image produced by the
  • FIG. 5 illustrates a processing step in
  • Figure 6 illustrates the step of superimposing seams located from the second image on the first image
  • Figure 7 illustrates a step in the fault detection operation.
  • Y-front underwear 11 presented laid flat on a conveyor 12 passing beneath an area scan video camera 13 which images each garment in turn for processing in image processing apparatus 14.
  • Y-front underwear poses special problems for automatic, machine-vision inspection, inasmuch as it comprises panels 11a with intervening seams lib.
  • Treating the garment as a single panel would require the signals produced by the seams to be somehow ignored.
  • the seams 14b themselves have width, and the method also allows the seams 11b to be inspected. If the seams lib could be relied upon to have a different colour or a different texture from the panels 11a, such difference could be used to identify the seams However, generally speaking, the seams are identical with or very similar in appearance to the panels.
  • Y-front garment seams stand proud of the adjoining panels, that is to say they have a z-coordinate with respect to the x,y-coordinates of the garment surface.
  • the garments 14 have a front and a back and that both may require to be inspected. This is not necessarily the case - preinspection of fabric may reduce the incidence of fabric faults to negligible proportions, and thus the only faults which require to be detected are making-up faults, which may be found to occur almost entirely on the complicated front and hardly ever on the much Huawei back of the garment. If both sides have to be inspected, however, the procedure will be repeated, mutatis mutando, with the garments, turned over. The present description will be with regard to inspection of the front. However, with some designs of Y-front underwear, laying the garment face up exposes the legopening seam all the way round, and then inspecting the reverse side may be unnecessary. An image is first formed of the garment 11 using the front lighting set-up 15. This image - which might be averaged over two or more frames for noise-reduction purposes - is stored in a frame store of the apparatus 14 and segmented using an appropriate grey-scale
  • centroid (X,Y) of the image - Figure 3 - is determined as V
  • N is the number of points on the periphery, which is a reasonable approximation from a simple and rapid calculation.
  • the distance from the centroid (X,Y) of each edge pixel (x i ,y i ) is calculated as
  • E-F ⁇ [(x E - x F ) 2 + (y E - y F ) 2 ]
  • the conveyor 12 is conveniently stopped for the imaging so that once the first image referred to above has been captured using the front light arrangement 15, and the image sent for processing as described, the front illumination can be switched off and the oblique illumination 16 switched on, for a second, oblique-lit image to be formed. Since the seams lib are raised this oblique lighting will highlight the edge of any seam nearest the light source and cast a shadow from the other edge. The position of the light source will be chosen with regard to the way the garments 11 are so presented on the conveyor 12 as to ensure that there is always a highlight and a shadow for each seam.
  • a second image is now captured under this oblique illumination which contains information about the structure of the garment within its periphery - the raised, wide seam and waistband structure.
  • Figure 4 shows such a second image, with highlights 41 and shadows 42 indicating the edges of the seams 11b and the waistband.
  • the highlights 41 and shadows 42 are processed separately.
  • the image (or rather a copy of it), to process the shadows is grey-scale segmented using an appropriate threshold to leave just shadows information. Since the shadows will not necessarily be sharp and since there may be spurious shadows from other parts of the garment, the image is further processed appropriately to sharpen up the shadows and eliminate spurious information.
  • One way to do this is to isolate features, starting e.g with vertical features, of which, in
  • Y-front underwear there should be only one, namely the shadow of one edge of the centre vertical seam.
  • a straight line is fitted to this feature by defining a box including the uppermost, lowermost and extreme lateral points and testing straight lines passing
  • FIG 7 shows the waistband area S 1 so
  • one region has significantly more faults than others, and it will advantageously be arranged that the apparatus stores statistics from which this can be determined and which can be used to
  • the arrangement operating thus heuristically may also be used to determine which area of manufacture must be tackled first from the point of view of fault elimination.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Textile Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Materials Engineering (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Food Science & Technology (AREA)
  • Medicinal Chemistry (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)

Abstract

Procédé et appareil de contrôle automatique pour les vêtements qui comportent des morceaux de tissu séparés par des coutures. Selon le procédé, on forme une image du vêtement, on identifie les coutures représentées sur l'image, et l'on contrôle chaque zone de tissu séparément.
PCT/GB1991/001414 1990-08-22 1991-08-20 Controle de vetements WO1992003721A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB909018470A GB9018470D0 (en) 1990-08-22 1990-08-22 Inspecting garments
GB9018470.6 1990-08-22

Publications (1)

Publication Number Publication Date
WO1992003721A1 true WO1992003721A1 (fr) 1992-03-05

Family

ID=10681082

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1991/001414 WO1992003721A1 (fr) 1990-08-22 1991-08-20 Controle de vetements

Country Status (5)

Country Link
EP (1) EP0544752A1 (fr)
JP (1) JPH06500395A (fr)
AU (1) AU8431291A (fr)
GB (1) GB9018470D0 (fr)
WO (1) WO1992003721A1 (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5283443A (en) * 1990-04-17 1994-02-01 De Montfort University Method for inspecting garments for holes having a contrasting background
WO1999023293A1 (fr) * 1997-11-03 1999-05-14 Cognivision Research, S.L. Procede d'inspection visuelle de vetements textiles et systeme de mise en oeuvre du procede
EP1004879A1 (fr) * 1998-11-26 2000-05-31 Lavanderie Dell'Alto Adige S.p.A. Procédé et appareil de contrôle de la couleur et de la réflectivité de vêtements à haute visibilité
WO2004022323A1 (fr) * 2002-09-03 2004-03-18 Continental Mabor - Indústria De Pneus, S.A. Systeme de controle et de surveillance automatique pour une tolerance au chevauchement d'epissures des plis textiles
WO2016056034A1 (fr) * 2014-10-06 2016-04-14 Bezzi Giorgio Système et procédé permettant de vérifier des articles vestimentaires
EP3594405A3 (fr) * 2018-07-10 2020-03-11 Herbert Kannegiesser GmbH Procédé d'inspection de pièces moulées textiles traitées, en particulier de vêtements
CN115624227A (zh) * 2022-06-16 2023-01-20 旭日商贸(中国)有限公司 一种基于aoi的服装加工智能传送工序流方法与系统
EP4556577A1 (fr) * 2023-11-20 2025-05-21 Comelz S.p.A. Appareil à gestion d'éclairage améliorée

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6421886B1 (ja) * 2018-02-01 2018-11-14 オムロン株式会社 情報処理装置、衣服分別システム、情報処理方法、及び制御プログラム

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3640851A1 (de) * 1985-12-18 1987-06-19 Karl Marx Stadt Tech Hochschul Anordnung zur signalbeeinflussung in optoelektronischen mess- und ueberwachungsgeraeten, vorzugsweise fuer textile flaechengebilde, faeden und arbeitselemente an textilmaschinen
GB2186365A (en) * 1983-07-16 1987-08-12 Leicester Polytechnic Inspecting textile items
EP0363177A1 (fr) * 1988-10-04 1990-04-11 Cegelec Controls Ltd. Procédé et dispositif d'alimentation en feuilles

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2186365A (en) * 1983-07-16 1987-08-12 Leicester Polytechnic Inspecting textile items
DE3640851A1 (de) * 1985-12-18 1987-06-19 Karl Marx Stadt Tech Hochschul Anordnung zur signalbeeinflussung in optoelektronischen mess- und ueberwachungsgeraeten, vorzugsweise fuer textile flaechengebilde, faeden und arbeitselemente an textilmaschinen
EP0363177A1 (fr) * 1988-10-04 1990-04-11 Cegelec Controls Ltd. Procédé et dispositif d'alimentation en feuilles

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5283443A (en) * 1990-04-17 1994-02-01 De Montfort University Method for inspecting garments for holes having a contrasting background
WO1999023293A1 (fr) * 1997-11-03 1999-05-14 Cognivision Research, S.L. Procede d'inspection visuelle de vetements textiles et systeme de mise en oeuvre du procede
EP1004879A1 (fr) * 1998-11-26 2000-05-31 Lavanderie Dell'Alto Adige S.p.A. Procédé et appareil de contrôle de la couleur et de la réflectivité de vêtements à haute visibilité
US6628807B1 (en) 1998-11-26 2003-09-30 Lavanderie Dell'alto Adige S.P.A. Method and equipment for testing the color and reflectivity of high-visibility garments
WO2004022323A1 (fr) * 2002-09-03 2004-03-18 Continental Mabor - Indústria De Pneus, S.A. Systeme de controle et de surveillance automatique pour une tolerance au chevauchement d'epissures des plis textiles
JP2005537162A (ja) * 2002-09-03 2005-12-08 コンチネンタル マボール − インダストリア デ ペネウス、 ソシエダッド アノニマ テキスタイルプライにおけるスプライスオーバラップ許容値の自動制御およびモニタリングシステム
US7346411B2 (en) 2002-09-03 2008-03-18 Continental Mabor-Industria De Pneus, S.A. Automatic control and monitoring system for splice overlapping tolerance in textile ply
CN100448655C (zh) * 2002-09-03 2009-01-07 康蒂南特马博-轮胎工业股份有限公司 纺织帘子布层中接头搭接公差的自动控制和监视系统
WO2016056034A1 (fr) * 2014-10-06 2016-04-14 Bezzi Giorgio Système et procédé permettant de vérifier des articles vestimentaires
EP3594405A3 (fr) * 2018-07-10 2020-03-11 Herbert Kannegiesser GmbH Procédé d'inspection de pièces moulées textiles traitées, en particulier de vêtements
CN115624227A (zh) * 2022-06-16 2023-01-20 旭日商贸(中国)有限公司 一种基于aoi的服装加工智能传送工序流方法与系统
EP4556577A1 (fr) * 2023-11-20 2025-05-21 Comelz S.p.A. Appareil à gestion d'éclairage améliorée

Also Published As

Publication number Publication date
GB9018470D0 (en) 1990-10-03
JPH06500395A (ja) 1994-01-13
AU8431291A (en) 1992-03-17
EP0544752A1 (fr) 1993-06-09

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