EP3494386A1 - Procede d'inspection optique d'un objet - Google Patents
Procede d'inspection optique d'un objetInfo
- Publication number
- EP3494386A1 EP3494386A1 EP17748541.4A EP17748541A EP3494386A1 EP 3494386 A1 EP3494386 A1 EP 3494386A1 EP 17748541 A EP17748541 A EP 17748541A EP 3494386 A1 EP3494386 A1 EP 3494386A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- dimensional image
- window
- determining
- image
- depth map
- 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- Withdrawn
Links
- 238000000034 method Methods 0.000 title claims abstract description 34
- 238000007689 inspection Methods 0.000 claims abstract description 39
- 230000003287 optical effect Effects 0.000 claims abstract description 37
- 230000007547 defect Effects 0.000 claims abstract description 16
- 238000012545 processing Methods 0.000 claims description 29
- 238000009434 installation Methods 0.000 claims description 14
- 239000003086 colorant Substances 0.000 claims description 11
- 238000010200 validation analysis Methods 0.000 claims description 4
- 229910000679 solder Inorganic materials 0.000 description 8
- 238000001514 detection method Methods 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000004458 analytical method Methods 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 238000005476 soldering Methods 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- 238000012790 confirmation Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000011282 treatment Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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
- G01N21/95—Investigating the presence of flaws or contamination characterised by the material or shape of the object to be examined
- G01N21/956—Inspecting patterns on the surface of objects
- G01N21/95684—Patterns showing highly reflecting parts, e.g. metallic elements
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/22—Measuring arrangements characterised by the use of optical techniques for measuring depth
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/24—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures
- G01B11/25—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures by projecting a pattern, e.g. one or more lines, moiré fringes on the object
-
- 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
- G01N21/8851—Scan or image signal processing specially adapted therefor, e.g. for scan signal adjustment, for detecting different kinds of defects, for compensating for structures, markings, edges
-
- 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
- G01N21/8851—Scan or image signal processing specially adapted therefor, e.g. for scan signal adjustment, for detecting different kinds of defects, for compensating for structures, markings, edges
- G01N2021/8887—Scan or image signal processing specially adapted therefor, e.g. for scan signal adjustment, for detecting different kinds of defects, for compensating for structures, markings, edges based on image processing techniques
- G01N2021/8893—Scan or image signal processing specially adapted therefor, e.g. for scan signal adjustment, for detecting different kinds of defects, for compensating for structures, markings, edges based on image processing techniques providing a video image and a processed signal for helping visual decision
Definitions
- the present invention generally relates to optical inspection installations comprising in particular three-dimensional image determination systems intended for online analysis of objects, in particular electronic circuits.
- the invention more particularly relates to optical inspection installations comprising digital cameras.
- An optical inspection facility is generally used to check the condition of an object, such as an electronic circuit, before it is placed on the market.
- the optical inspection facility can provide different types of object images that are scanned automatically by computer and / or by an operator for potential defects.
- An example image is a two-dimensional image, or 2D image, in color of the object, for example a top view of the object.
- Another example of an image is a three-dimensional image of the object, or 3D image.
- a 3D image of an object corresponds to a cloud of points, for example several million points, of at least one part of the outer surface of the object in which each point of the surface is marked by its coordinates determined with respect to a three-dimensional space mark.
- Another example of an image is a depth map, also called "z-map", which can be represented by a 2D image called "heat map” in which the color of each pixel depends on the height of the corresponding point of the image. the object.
- the optical inspection installation generally comprises a processing module adapted to perform an automatic analysis of the images of the object for possible defects. This is for example done by comparing the image of the object to a reference image.
- a processing module adapted to perform an automatic analysis of the images of the object for possible defects. This is for example done by comparing the image of the object to a reference image.
- the images of the electronic circuit can be used in particular to inspect the good state of the welds of the electronic components on the printed circuit.
- a confirmation may be requested from an operator.
- an image or several images of the object can be displayed on a display screen, including the 3D image of the object, the 2D color image of the object or the depth map of the object.
- the processing module can indicate to the operator on each image displayed the part of the image where a potential fault is detected, it can be difficult for
- the operator to validate or not the presence of defects by the mere observation of the image. Additional operations, for example the determination of sectional views of the object, may then be necessary for the operator to validate the presence of defects or not.
- a disadvantage is that the duration of the optical inspection process is increased.
- An object of an embodiment is to overcome at least in part the disadvantages of inspection methods optical and optical inspection facilities previously described.
- Another object of an embodiment is to assist an operator during an optical inspection process of an object.
- Another object of an embodiment is that the duration of the optical inspection method of the object is reduced.
- an embodiment provides a method of assisting the optical inspection of an object comprising the steps of:
- the method comprises displaying the second three-dimensional image on a screen.
- the method comprises the validation or the non-validation by an operator of the potential defect by means of a man / machine interface.
- the first depth map is a color map comprising a set of pixels, each pixel having a color that depends on the height of the point of the first three-dimensional image corresponding to said pixel.
- the first depth map uses a color range including a first color for the maximum value of the height of the points of the first three-dimensional image in the first window and a second color for the minimum value of the height of the points of the first three-dimensional image in the first window.
- the first and second colors are determined by an operator.
- the first two-dimensional image is a top view of the object.
- the method further comprises the following steps:
- the method comprises successively:
- the third windows are determined automatically or by an operator.
- a potential defect is detected when the height of at least one point of the first three-dimensional image in the third window does not belong to an interval of heights.
- the object is an electronic circuit.
- An embodiment also provides an optical inspection facility of an object comprising a system for determining a first three-dimensional image of the object and a first two-dimensional color or greyscale image of the object, the installation further comprising a processing module adapted to determine at least one potential defect of the object from the first three-dimensional image and / or the first two-dimensional image, determining a first window on the first two-dimensional image surrounding the potential defect, determining a second two-dimensional image corresponding to the first two-dimensional image outside the first window and corresponding to a depth map of the object in the first window and determining a second three-dimensional image corresponding to the first three-dimensional image on which the second two-dimensional image is applied.
- the installation comprises at least one camera and a projector adapted to project structured images on the object.
- the installation further comprises a display screen for displaying the third three-dimensional image.
- FIG. 1 represents, partially and schematically, an embodiment of an optical circuit inspection installation of electronic circuits
- FIG. 2 is a block diagram of an embodiment of an optical inspection method implemented by the installation of Figure 1;
- FIG. 3 is a partial and schematic representation of an example of a three-dimensional image of an electronic circuit;
- FIG. 4 is a detailed view of the three-dimensional image of FIG. 3 after modification during the implementation of the optical inspection method illustrated in FIG. 2.
- FIG. 1 shows, very schematically, an optical inspection facility 10 of electronic circuits.
- the term "electronic circuit” is understood to mean either a set of electronic components interconnected via a support, the only support used to make this interconnection without the electronic components or the support without the electronic components but provided with means for fixing the electronic components.
- the support is a printed circuit and the electronic components are fixed to the printed circuit by solder joints obtained by heating soldering paste blocks.
- the term “electronic circuit” means the printed circuit alone (without electronic components or soldering paste blocks), the printed circuit provided with solder paste blocks and without electronic components, the printed circuit fitted with the dough blocks welding and electronic components before the heating operation or the printed circuit provided with electronic components attached to the printed circuit by solder joints.
- Each electronic circuit Card is placed on a conveyor 12, for example a flat conveyor.
- the conveyor 12 is able to move the card circuit in a direction X, for example a horizontal direction to bring it into a region of the optical inspection facility, called the scene S, in which images of the circuit card can be acquired.
- the direction of movement of the circuit Card may be a horizontal direction perpendicular to the direction X shown in Figure 1.
- the conveyor 12 may comprise a set of belts and rollers driven by an electric motor
- the conveyor 12 may comprise a linear motor moving a carriage on which the electronic circuit Card rests.
- the circuit Card corresponds, for example, to a rectangular card having a length and a width ranging from 50 mm to 550 mm.
- the optical inspection facility 10 includes a system 15 for determining a 3D image of the electronic circuit card.
- a 3D image of an electronic circuit corresponds to a cloud of points, for example several million points, of at least a portion of the outer surface of the electronic circuit in which each point of the surface is marked by its coordinates (x, y, z) determined with respect to a three-dimensional space mark R (Ox, Oy, Oz).
- the plane (Ox, Oy) corresponds to a reference plane of the optical inspection installation 10, for example parallel to the plane containing the upper face of the printed circuit.
- the direction (Oz) is perpendicular to the plane (Ox, Oy).
- a 2D image is a digital image acquired by a camera and corresponding to a matrix of pixels.
- the term image refers to a two-dimensional image.
- the system 15 is adapted to determine a 3D image of the card circuit by image projection, for example fringes, on the circuit to be inspected.
- the system 15 may comprise an image projection device P comprising at least one projector, a single projector P being represented in FIG. 1. When several projectors P are present, the projectors P may be substantially aligned in a direction perpendicular to the direction X.
- the system 15 further comprises an image acquisition device C comprising at least one digital camera, a single camera C being shown in FIG. 1. When several cameras C are present, the cameras C may be substantially aligned.
- the processing module 16 may comprise a computer or a microcontroller comprising a processor and a non-volatile memory. in which are stored sequences of instructions whose execution by the processor allows the processing module 16 to perform the desired functions.
- the processing module 16 may correspond to a dedicated electronic circuit.
- the electric motor 14 can, in addition, be controlled by the processing module 16.
- control means of the conveyor 12, the camera C and the projector P of the optical inspection installation 10 described above are within the reach of those skilled in the art and are not described in more detail.
- the 3D image judging system 15 is adapted to determine a 3D image of the Card circuit by projecting images, for example fringes, onto the circuit to be inspected.
- the camera C and the projector P are fixed during the acquisition of the 2D images used for the determination of the 3D image and the electronic circuit Card is moved relative to the camera C and the projector P by way of the conveyor 12.
- the electronic circuit Card can be fixed during the acquisition of the 2D images used for the determination of the 3D image and the camera C and the projector P are moved relative to the electronic circuit Card by any suitable conveying device.
- the system 15 for determining a 3D image comprises a laser scanner.
- the optical inspection facility 10 includes a display screen 18 connected to the processing module 16 and on which the processing module 16 is adapted to display 2D images or a representation of a 3D image.
- the optical inspection installation 10 comprises a man / machine interface 20 connected to the processing module 16 and comprising for example a keyboard, a touch screen, possibly coinciding with the display screen 18, a mouse, a microphone and / or command buttons.
- a man / machine interface 20 connected to the processing module 16 and comprising for example a keyboard, a touch screen, possibly coinciding with the display screen 18, a mouse, a microphone and / or command buttons.
- An operator can transmit instructions to the processing module 16 by means of the interface 20.
- the optical inspection facility 10 is further adapted to provide a 2D image of the electronic circuit Card, hereinafter called a texture image, for example a top view of the electronic circuit Card.
- a texture image for example a top view of the electronic circuit Card.
- This view may correspond to an image acquired by the camera C or by another camera, not shown, or to a combination of several two-dimensional images acquired by the camera C or by several cameras. It can be a grayscale or color image of the electronic circuit card.
- the texture image corresponds to a matrix of pixels, each pixel being defined by a numerical value corresponding to a gray level or a color code which depends on the color of the corresponding point of the electronic circuit Card.
- the optical inspection facility 10 is further adapted to provide a depth map of at least a portion of the electronic circuit card.
- the depth map is a 2D image, for example a top view of the electronic circuit card, representing a heat card of the electronic circuit card wherein the color of each pixel of the image indicated by the coordinates (x, y) depends on the z-coordinate of the point of the 3D image of the electronic circuit Card at the (x, y) coordinates.
- the colors of the pixels in the depth map are chosen from a color chart that maps a single color to each value in the z coordinate.
- the heat map can be monochrome, for example with colors ranging from black to white.
- a specific color gradient may be used, for example, colors successively passing through blue, cyan, green, yellow and red.
- the color of the heat map corresponding to the maximum value of the z-coordinate and the minimum color is called the maximum color, the color of the heat map corresponding to the minimum value of the z-coordinate.
- These minimum and maximum colors can be defined by the operator, for example based on manufacturing tolerances.
- the colors of the depth map can be coded in the RGB coding computer system. In the RGB encoding, each color is coded by three values associated with the primary colors, that is, red, green, and blue. For each primary color, the value is expressed in an interval between 0 and the maximum, for example 1, 100%, or 255.
- FIG. 2 represents in the form of a block diagram an embodiment of a method of optical inspection of an electronic circuit implemented by the optical inspection installation 10 of FIG. 1.
- the method comprises successive successive steps 30, 32, 34, 36, 38 and 40.
- step 30 the electronic circuit Card to be inspected is placed on the scene S of the optical inspection installation 10, for example by means of the conveyor 12.
- the optical inspection facility 10 determines at least one 3D image of the electronic circuit Card.
- the optical inspection facility 10 may further determine a texture image of the Card circuit and apply the texture image to the 3D image to display a color 3D image on 18.
- the application of the texture image on the 3D image can be achieved by implementing a known virtual view synthesis algorithm.
- the first family includes algorithms called "ray tracing", which are more expensive in calculations but allow to obtain more realistic virtual views.
- the second family includes algorithms called “rasterization”, which are less expensive in calculations but more approximate. Examples of such algorithms are described in the book “Fundamentals of Computer Graphics” by Peter Shirley (Tayler & Francis Editions, 2005, ISBN 1568812698), especially chapters 3 and 10.
- FIG. 3 is a perspective view, partial and schematic, of an example of a three-dimensional image I3D of an electronic circuit such that it can be displayed on the screen 18.
- the image I3D represents two integrated circuits 42 comprising tabs 44 fixed to the upper face of a printed circuit 46 by solder pads 48.
- the processing module 16 is adapted to detect the presence of potential defects on the electronic circuit card by an analysis of the 3D image and / or acquired 2D images of the electronic circuit card.
- the processing module 16 can implement any type of algorithm for the detection of potential defects.
- the processing module 16 can compare a 3D image of the electronic circuit on which solder paste has been deposited to an image 3D determined in advance of the printed circuit in the absence of solder paste, for example to obtain a 3D image representative of the differences between the 3D images of the printed circuit with and without solder paste.
- the analysis of this 3D comparison image makes it possible in particular to determine whether the welds of the electronic components are satisfactory.
- the processing module 16 determines, from the 3D image of the electronic circuit Card, a modified 3D image on which is highlighted at least one area where a potential fault has been detected. According to one embodiment, the processing module 16 determines for each potential fault a window in the texture image which contains the area where the potential fault is detected. Each window may correspond to a circle or to any polygonal shape, for example a square or a rectangle. The window is smaller than the dimensions of the texture image. According to one embodiment, each window contains less than 20% of the pixels of the texture image. Each window can be determined as the set of pixels around the area where a potential fault has been detected and for which the variation of the z-coordinate of the points of the window varies within a predetermined range.
- the operator manually defines the windows on which the processing module 16 must perform specific tests also defined by the operator.
- An example of a test is to check the inclusion of the height of a pixel of the z-map in a height range defined by the operator, for example based on manufacturing tolerances.
- This automatic or supervised definition of windows takes place during a so-called programming phase of a new electronic card reference, of a new product.
- a program consists of the numeric description of a set of windows associated with processes. These treatments may for example be methods for determining histograms, inclusion tests in an envelope along a section or profile, measurements of similarity between the image resulting from the acquisition system and a reference image. .
- These processes (and therefore the definition of manufacturing tolerances) can then be stored in a "database” or "component library” to accelerate this programming step for future products on components already processed but also to reflect any modification of the processing library on existing programs.
- the processing module 16 can further determine at least one window at a location where the structure of the electronic circuit is similar to that where the fault has been detected but no fault has been detected.
- the processing module 16 determines a window at each location where the structure of the electronic circuit is similar to that where the fault has been detected but where no fault has been detected.
- the window defines a sub-range of coordinates (x, y) corresponding to pixels of the texture image and points of the 3D image.
- These windows can also be derived from a manual preset made by the operator who can position them for example on the legs of a component (for the detection of the legs not connected to the rest of the electronic card) or on the top of the box a component (for the detection of a coplanarity fault between the component and the rest of the electronic card).
- the processing module 16 determines a local depth map. For this purpose, the processing module 16 determines the minimum and maximum values that the z-coordinate of the 3D image takes for the coordinate points (x, y) contained in the window.
- the local maximum value of the z coordinate in the window is generally less than the maximum value of the z coordinate on the entire 3D image, called the overall maximum value.
- the local minimum value of the z coordinate in the window is usually greater than the minimum value of the z coordinate on the entire 3D image, called the global minimum value.
- the processing module 16 determines a local heat map by associating the maximum color with the local maximum value of the z-coordinate on the window and associating the minimum color with the minimum value of the z coordinate on the window.
- the processing module 16 determines a new 2D image which corresponds in each window to a local depth map and which corresponds outside the windows to the texture image.
- the processing module 16 applies the new 2D image to the 3D image.
- the 3D image thus modified is then displayed on the screen 18.
- the application of the new 2D image on the 3D image can be performed by the virtual view synthesis algorithms described above.
- the colors of the heat map corresponding to the z-map can be set for each pixel on the manufacturing tolerances in order to encode for example the character " acceptable "of the electronic card inspected with the usual colors of pass or fail on a test, namely the green color when the z coordinate is included in the tolerance interval, orange when the z coordinate is close to one of the limit of the tolerance range (for example less than 50 ⁇ m from one of the terminals) and red when the z-coordinate is no longer included in the manufacturing tolerances.
- FIG. 4 represents an enlarged detail view of an example of modified 3D image I3D 'obtained from the image I3D of FIG. 3.
- a first window F1 located at a solder pad 48 where a potential fault has been detected and is represented by dotted lines a second window F2 located at a weld pad 48 where there has been no detection of 'failure .
- step 38 for each potential fault detected by the processing module 16, the operator determines whether the electronic circuit Card is accepted or refused, for example by means of the interface 20.
- the depth card applied locally to 1 3D image in each window where a potential fault is detected allows an operator to quickly determine the actual presence or absence of a fault in this window. Indeed, as the local depth map is applied to a small part of the image 3D, the color range of the local depth map corresponds to a range of variations of the z coordinate that is strictly less than the total range of variations of the z coordinate over the entire 3D image. As a result, the variations of the z coordinate are highlighted by the local depth map. The operator can thus easily determine whether variations of the z coordinate in the window where a potential fault has been detected are normal or not.
- This detection can be facilitated when at least two local depth maps are applied to the 3D image, the first local depth map being in a first window where a potential fault has been detected and the second local depth map being located. in a second window where there has not been detection of a potential fault but where the structure of the electronic circuit is similar to that in the first window.
- the operator can then easily determine if a defect is actually present by visually comparing the two local depth maps.
- This detection can also be facilitated when the heat card encodes the distance between a pixel of the processing window and the tolerances predefined by the operator.
- step 40 the electronic circuit Card is removed from the scene S.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Pathology (AREA)
- Computer Vision & Pattern Recognition (AREA)
- Immunology (AREA)
- Signal Processing (AREA)
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
- Length Measuring Devices By Optical Means (AREA)
- Testing Of Optical Devices Or Fibers (AREA)
- Image Analysis (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1657518A FR3054914B1 (fr) | 2016-08-03 | 2016-08-03 | Procede d'inspection optique d'un objet |
PCT/FR2017/051923 WO2018024957A1 (fr) | 2016-08-03 | 2017-07-12 | Procede d'inspection optique d'un objet |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3494386A1 true EP3494386A1 (fr) | 2019-06-12 |
Family
ID=57045187
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP17748541.4A Withdrawn EP3494386A1 (fr) | 2016-08-03 | 2017-07-12 | Procede d'inspection optique d'un objet |
Country Status (4)
Country | Link |
---|---|
US (1) | US10788434B2 (fr) |
EP (1) | EP3494386A1 (fr) |
FR (1) | FR3054914B1 (fr) |
WO (1) | WO2018024957A1 (fr) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110334589B (zh) * | 2019-05-23 | 2021-05-14 | 中国地质大学(武汉) | 一种基于空洞卷积的高时序3d神经网络的动作识别方法 |
CN111854636B (zh) * | 2020-07-06 | 2022-03-15 | 北京伟景智能科技有限公司 | 一种多相机阵列三维检测系统和方法 |
WO2022016152A1 (fr) * | 2020-07-17 | 2022-01-20 | Path Robotics, Inc. | Rétroaction en temps réel et réglage dynamique pour robots de soudage |
CN116007526B (zh) * | 2023-03-27 | 2023-06-23 | 西安航天动力研究所 | 一种膜片刻痕深度自动测量系统及测量方法 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5060065A (en) * | 1990-02-23 | 1991-10-22 | Cimflex Teknowledge Corporation | Apparatus and method for illuminating a printed circuit board for inspection |
JP4372709B2 (ja) | 2005-03-25 | 2009-11-25 | シーケーディ株式会社 | 検査装置 |
FR3004249B1 (fr) * | 2013-04-09 | 2016-01-22 | Vit | Systeme d'acquisition d'images tridimensionnelles |
KR20150017421A (ko) | 2013-07-17 | 2015-02-17 | 주식회사 고영테크놀러지 | 3차원 기판검사장치의 그래픽 유저 인터페이스 |
KR101457040B1 (ko) | 2013-09-03 | 2014-10-31 | 주식회사 고영테크놀러지 | 3차원 기판검사장치의 그래픽 유저 인터페이스 |
JP6303867B2 (ja) * | 2014-06-27 | 2018-04-04 | オムロン株式会社 | 基板検査装置及びその制御方法 |
-
2016
- 2016-08-03 FR FR1657518A patent/FR3054914B1/fr active Active
-
2017
- 2017-07-12 WO PCT/FR2017/051923 patent/WO2018024957A1/fr unknown
- 2017-07-12 EP EP17748541.4A patent/EP3494386A1/fr not_active Withdrawn
- 2017-07-12 US US16/322,357 patent/US10788434B2/en active Active
Also Published As
Publication number | Publication date |
---|---|
US20190178817A1 (en) | 2019-06-13 |
US10788434B2 (en) | 2020-09-29 |
FR3054914B1 (fr) | 2021-05-21 |
FR3054914A1 (fr) | 2018-02-09 |
WO2018024957A1 (fr) | 2018-02-08 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP3494386A1 (fr) | Procede d'inspection optique d'un objet | |
KR102576277B1 (ko) | 불량 검출 장치 및 방법 | |
WO2013109755A1 (fr) | Segmentation pour l'inspection de tranches | |
JP2008170325A (ja) | シミ欠陥検出方法およびシミ欠陥検出装置 | |
CN104101611A (zh) | 一种类镜面物体表面光学成像装置及其成像方法 | |
EP3788319A1 (fr) | Dispositif de balayage laser à rejet de réflexions | |
FR2974218A1 (fr) | Analyse de l'image numerique de la surface d'un pneumatique - traitement des points de non mesure | |
FR3023629A1 (fr) | Appareil de traitement d'informations destine a detecter un objet a partir d'une image, procede destine a commander l'appareil, et support de stockage | |
KR101828536B1 (ko) | 패널 검사 방법 및 장치 | |
KR20160054150A (ko) | 형태학적 영상 처리와 레이블링을 이용한 얼룩 결함 자동 검출 시스템 및 방법 | |
JP7098111B2 (ja) | 表面検査装置および表面検査方法 | |
TW202240546A (zh) | 用於自動視覺檢查之圖像增強技術 | |
JP2006145228A (ja) | ムラ欠陥検出方法及び装置 | |
JP2007285868A (ja) | 輝度勾配検出方法、欠陥検出方法、輝度勾配検出装置および欠陥検出装置 | |
JP2005189175A (ja) | 流動性容器の検査装置および検査方法 | |
WO2020229780A1 (fr) | Procédé et système d'inspection optique d'un objet | |
US11816827B2 (en) | User interface device for autonomous machine vision inspection | |
IL265163A (en) | System and method for a preparatory test of a production line | |
US20220413476A1 (en) | Offline Troubleshooting and Development for Automated Visual Inspection Stations | |
JP3432446B2 (ja) | 表面検査装置および表面検査方法 | |
FR2688911A1 (fr) | Procede de creation de la signature d'un objet represente sur une image numerique, du type consistant a definir au moins un calibre dimensionnel caracteristique dudit objet, et procede correspondant de verification de la signature d'un objet. | |
JP6752670B2 (ja) | 透明体の検査方法及び装置 | |
KR101087863B1 (ko) | 구조 광 패턴을 이용한 영상의 경계를 결정하는 방법, 이러한 방법이 기록된 기록매체 및 구조 광 패턴을 이용한 영상의 경계 인식 시스템 | |
JP2006242584A (ja) | ムラ欠陥検出方法及び装置 | |
JP2008232639A (ja) | シミ欠陥検出方法および装置 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: UNKNOWN |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE |
|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE |
|
17P | Request for examination filed |
Effective date: 20190205 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
AX | Request for extension of the european patent |
Extension state: BA ME |
|
DAV | Request for validation of the european patent (deleted) | ||
DAX | Request for extension of the european patent (deleted) | ||
GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: GRANT OF PATENT IS INTENDED |
|
RIC1 | Information provided on ipc code assigned before grant |
Ipc: G01B 11/25 20060101ALI20210908BHEP Ipc: G01B 11/24 20060101ALI20210908BHEP Ipc: G01N 21/956 20060101ALI20210908BHEP Ipc: G01N 21/88 20060101AFI20210908BHEP |
|
INTG | Intention to grant announced |
Effective date: 20211004 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 20220215 |