WO2010095551A1 - Procédé de mesure de la forme extérieure d'un objet en plaque rectangulaire et procédé de calibrage de la position relative de moyens de capture d'image - Google Patents

Procédé de mesure de la forme extérieure d'un objet en plaque rectangulaire et procédé de calibrage de la position relative de moyens de capture d'image Download PDF

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Publication number
WO2010095551A1
WO2010095551A1 PCT/JP2010/051975 JP2010051975W WO2010095551A1 WO 2010095551 A1 WO2010095551 A1 WO 2010095551A1 JP 2010051975 W JP2010051975 W JP 2010051975W WO 2010095551 A1 WO2010095551 A1 WO 2010095551A1
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WO
WIPO (PCT)
Prior art keywords
rectangular plate
corners
calibration
squareness
glass plate
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PCT/JP2010/051975
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English (en)
Japanese (ja)
Inventor
秀人 谷
静則 金子
Original Assignee
旭硝子株式会社
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Publication date
Application filed by 旭硝子株式会社 filed Critical 旭硝子株式会社
Priority to JP2011500568A priority Critical patent/JPWO2010095551A1/ja
Priority to KR1020117017865A priority patent/KR101442895B1/ko
Priority to CN2010800061700A priority patent/CN102301201B/zh
Publication of WO2010095551A1 publication Critical patent/WO2010095551A1/fr

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    • 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
    • G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
    • G01B11/028—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness by measuring lateral position of a boundary of the object
    • 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
    • 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
    • G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
    • G01B11/04—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness specially adapted for measuring length or width of objects while moving
    • 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
    • G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
    • G01B11/04—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness specially adapted for measuring length or width of objects while moving
    • G01B11/043—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness specially adapted for measuring length or width of objects while moving for measuring length
    • 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
    • G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
    • G01B11/04—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness specially adapted for measuring length or width of objects while moving
    • G01B11/046—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness specially adapted for measuring length or width of objects while moving for measuring width
    • 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
    • G01B11/26—Measuring arrangements characterised by the use of optical techniques for measuring angles or tapers; for testing the alignment of axes

Definitions

  • the present invention relates to a measuring method for measuring the outer shape (dimensions, squareness of four corners, etc.) of a rectangular plate-like material such as a glass plate, and in particular, the outer shape of a rectangular plate-like material such as a glass plate conveyed on a line (
  • the present invention relates to a measurement method capable of measuring dimensions, squareness of four corners, etc.) non-stop.
  • the outer shape of the rectangular glass plate (dimensions and dimensions) It is required to measure the squareness of the four corners in a non-contact manner in a short time with high precision and efficiency.
  • the glass plate is imaged, and the captured image, etc. Based on this, a shape measuring device that automatically measures the outer shape (such as dimensions and squareness of four corners) of a glass plate has been proposed (see, for example, Patent Document 1).
  • FIG. 10 is a front view of the shape measuring apparatus described in Patent Document 1.
  • FIG. 11 is a side view of the shape measuring apparatus described in Patent Document 1.
  • the shape measuring apparatus 100 described in Patent Document 1 includes an X-axis guide 102 extending in the X-axis direction, a Y-axis guide 104 extending in the Y-axis direction, an imaging unit 106, and an imaging unit 106.
  • a motor (not shown) that moves in the X and Y directions along the X and Y axis guides 102 and 104 is provided.
  • the edges of the glass plate 110 carried in an inclined posture and supported on the inspection table 108 are imaged while moving the imaging means 106 in the XY directions, Based on the captured image or the like, the external shape (size, squareness of four corners, etc.) of the glass plate 110 is automatically measured.
  • the shape measuring apparatus 100 is configured to image the edge or the like of the glass plate 110 using the imaging means 106 moving in the XY directions, the glass plate 110 must be fixed on the inspection table 108 for a certain period of time. In other words, it is not possible to measure the shape of each of the plurality of glass plates 110 conveyed on the line in a non-stop manner, and the measurement takes time, and feedback to manufacturing conditions is delayed when a defect occurs. For this reason, there is a problem that the yield cannot be improved.
  • This invention is made in view of such a situation, and measures the external shape (dimensions, squareness of four corners, etc.) of a rectangular plate such as a glass plate conveyed on a line in a non-stop manner.
  • An object is to provide a measurement method capable of performing
  • the present invention has a shape including four image pickup means arranged in advance corresponding to the four corners of a rectangular plate-like object, and a storage means for storing the relative coordinates of each of the four image pickup means.
  • the measuring method for measuring the outer shape of the rectangular plate conveyed so as to pass through the shape measuring section using the measuring device the step of determining whether or not the rectangular plate has reached the measuring section and, when it is determined that the rectangular plate-like object has reached the measurement section, the four imaging means captures images including the corners of the four corners of the rectangular plate-like object that has reached the measurement section.
  • Corner post coordinates which are coordinate values from the image origin of each of the four corners of the rectangular plate based on the captured image, and the calculation Calculating the length dimension of each of the four sides of the rectangular plate based on the corner post coordinates of the rectangular plate and the relative coordinates stored in the storage means; and the calculated corner post Calculating a squareness of each of the four corners of the rectangular plate based on the coordinates, the relative coordinates stored in the storage means, and the calculated length dimension.
  • a rectangular plate shape is formed simultaneously (or almost simultaneously) with four image pickup units arranged in advance corresponding to the four corners of the rectangular plate-like object without moving the image pickup unit in the XY directions as in the prior art. Taking an image including the corners of each of the four corners of the object, and based on the captured image, etc., the outer shape of the rectangular plate (the length dimension of each of the four sides of the rectangular plate and the four corners of the rectangular plate (Each squareness) is calculated. For this reason, it becomes possible to measure the shape in a non-stop manner for each of the plurality of rectangular plates conveyed on the line, and it is possible to improve the yield.
  • the external shape measuring method of the present invention includes a pre-measured length dimension of each of the four sides of the calibration standard rectangular plate, and a pre-measured squareness of each of the four corners of the calibration standard rectangular plate.
  • the step of correcting the squareness measured in advance at each of the four corners of the rectangular plate-like object, and the four imaging means capture images including the corner portions of the four corners of the standard rectangular plate for calibration Calculating the corner post coordinates of each of the four corners of the standard rectangular plate for calibration based on the captured image, and the corner post coordinates of the calculated standard rectangular plate for calibration, Based on the corrected squareness and the length dimension measured in advance on each of the four sides of the standard rectangular plate for calibration, the relative coordinates of the four imaging units are calculated.
  • storing in the storage means may further comprise a.
  • the outer shape of the rectangular plate (rectangular plate shape) It is possible to calculate the relative coordinates of each of the four imaging units that are the basis for calculating the length dimension of each of the four sides of the object and the squareness of each of the four corners of the rectangular plate-like object.
  • the present invention provides a calibration standard rectangular plate-like shape in a method for calibrating the relative coordinates of the four imaging means in a shape measuring apparatus provided with four imaging means previously arranged corresponding to the four corners of the rectangular plate-like object. Based on the pre-measured length dimension of each of the four sides of the object and the pre-measured squareness of each of the four corners of the standard rectangular plate for calibration, the four corners of the rectangular plate were measured in advance. A step of correcting the squareness, a step of capturing an image including each of the four corners of the standard rectangular plate for calibration by the four imaging means, and the calibration standard based on the captured image.
  • the outer shape of the rectangular plate (rectangular plate shape) It is possible to calculate the relative coordinates of each of the four imaging units that are the basis for calculating the length dimension of each of the four sides of the object and the squareness of each of the four corners of the rectangular plate-like object.
  • a measuring method capable of measuring the outer shape (dimensions, squareness of four corners, etc.) of a rectangular plate such as a glass plate conveyed on a line in a non-stop manner. Can be provided.
  • FIG. 4 is a plan view of the vicinity of a shape measurement section 32 on a measurement line 30. It is a figure for demonstrating the positional relationship of four sides and a corner part of the calibration standard glass plate 36, and the imaging means 18C0-18C3. This is an example of images P1 to P4 picked up by the image pickup means 18C0 to 18C3.
  • 10 is a flowchart for explaining a process of calculating relative coordinates of four imaging units 18C0 to 18C3.
  • FIG. 6 is a diagram for explaining the relationship between the lengths E1, E2, ER, EL of each of the four sides of the calibration standard glass plate 36 and the squareness ⁇ 1 to ⁇ 4 of each of the four corners of the calibration standard glass plate 36.
  • FIG. 6 is a diagram for explaining the relationship between relative coordinates S0 to S3, approximate correction angles R1 *, R2 *, etc. of four imaging means 18C0 to 18C3. It is a flowchart for demonstrating the method to measure the external shape of the work glass plate. It is a front view of the shape measuring apparatus of patent document 1. It is a side view of the shape measuring apparatus of patent document 1.
  • FIG. 1 is a system configuration diagram of a shape measuring apparatus applied to the method for measuring the outer shape of a rectangular plate according to the present embodiment.
  • FIG. 2 is a diagram for explaining a general manufacturing process of a glass plate.
  • FIG. 3 is a plan view of the vicinity of the shape measurement section 32 on the measurement line 30.
  • the glass plate is generally a cutting step for cutting a plate glass manufactured to a predetermined thickness into a predetermined size, a chamfering step for chamfering the cut glass plate, and after chamfering processing.
  • the glass plate is manufactured through a washing / drying step for washing / drying and a measurement step (measurement line) for measuring the outer shape of the glass plate after washing / drying.
  • the shape measuring apparatus 10 of this embodiment is an apparatus for measuring the outer shape of a glass plate, and is installed in a shape measuring section 32 on a measurement line 30 as shown in FIG.
  • the cleaned and dried glass plate 34 (for example, a rectangular glass plate of length L (several m) ⁇ width W (several m) shown in FIG. 3; hereinafter referred to as a work glass plate) is a known conveying means (not shown). ) On the measurement line 30 and pass through the shape measurement section 32.
  • the shape measuring apparatus 10 automatically measures the outer shape of the workpiece glass plate 34 passing through the shape measuring section 32 (the length dimension of each of the four sides of the workpiece glass plate 34 and the squareness of each of the four corners, etc.) in a non-stop manner.
  • the shape measuring apparatus 10 includes an image processing apparatus 12, four illumination units 16 connected to the image processing apparatus 12 via an LED power source 14 and a predetermined interface (not shown), and the image processing apparatus 12. Are provided with four imaging means 18C0 to 18C3 connected via a predetermined interface (not shown), a sensor 20 connected to the image processing device 12 via a predetermined interface (not shown), and the like.
  • the image processing apparatus 12 includes a calculation / control unit 12a such as an MPU or CPU, a storage unit 12b such as a RAM or ROM, and the like.
  • the image processing apparatus 12 includes a control unit that controls each illumination unit 16 and each imaging unit 18C0 to 18C3 by the calculation / control unit 12a executing a predetermined program read into the storage unit 12b, and the outer shape of the work glass plate 34. It functions as a calculation means for calculating the shape.
  • the illumination means 16 is for illuminating the four corners of the work glass plate 34, and is, for example, an illumination device including a plurality of LED light sources (not shown) arranged in a ring shape.
  • the illumination means 16 is arrange
  • the illumination unit 16 is turned on according to control from the image processing apparatus 12 and illuminates the four corners of the work glass plate 34.
  • the imaging means 18C0 to 18C3 are for imaging the four corners of the work glass plate 34, and are, for example, an imaging device including a CCD type or CMOS type imaging device (for example, resolution: several tens of ⁇ m / pic).
  • the corner portions C1 to C4 (see FIGS. 1, 3, and 4) of the four corners of the work glass plate 34 are in the visual field range (for example, visual field range: several tens mm ⁇ several tens mm). It is arranged at four locations corresponding to each of the four corners of the work glass plate 34 so as to be accommodated.
  • the imaging means 18C0 to 18C3 capture images P1 to P4 including the corner portions C1 to C4 at the four corners of the work glass plate 34 in accordance with control from the image processing device 12.
  • FIG. 5 is an example of images P1 to P4 picked up by the image pickup means 18C0 to 18C3. The captured images P1 to P4 are taken into the image processing device 12.
  • the sensor 20 is for detecting whether or not the workpiece glass plate 34 to be measured has reached the measurement section 32 (a predetermined imaging position in the measurement section 32), and is, for example, a photo interrupter.
  • the sensor 20 detects the edge 34a (edge) in the transport direction of the workpiece glass plate 34
  • the sensor 20 notifies the image processing apparatus 12 of a detection signal to that effect.
  • the image processing apparatus 12 controls each illumination unit 16 so as to illuminate the four corners of the work glass plate 34 that has reached the measurement section 32.
  • the imaging means 18C0 to 18C3 are controlled so as to capture images including the corner portions C1 to C4 at the four corners of the work glass plate 34, respectively.
  • FIG. 6 is a flowchart for explaining processing for calculating the relative coordinates of the four imaging units 18C0 to 18C3.
  • the following processing is realized by the image processing apparatus 12 (calculation / control means) executing a predetermined program read into the storage means 12b or the like.
  • the lengths E1, E2, EF, ER of the four sides of the calibration standard glass plate 36 and the squares ⁇ 1 to ⁇ 4 of the four corners of the calibration standard glass plate 36 are as follows. Measured in advance using a calibration gauge such as a linear gauge and stored in the storage means 12b as shown in Table 1.
  • the perpendicularity is the magnitude of the deviation from the right angle of each of the four corners of the calibration standard glass plate 36 that should be a right angle.
  • a point on the calibration standard glass plate 36 that is 1000 mm away from the corner portions C1 to C4 of each of the four corners of the calibration standard glass plate 36 and an inner angle of each of the four corners are perpendicular.
  • the distance (mm) to a point on the calibration standard glass plate 36 that is 1000 mm away from each of the corners C1 to C4 of the four corners of the calibration standard glass plate 36 was adopted as a squareness.
  • DWSn ⁇ ⁇ n / 1000 is obtained by dividing the squares ⁇ 1 to ⁇ 4 by 1000 mm, which is the distance between the squareness measurement points and the corners C1 to C4 at the four corners, to the variables DWS1 to DWS4. ⁇ 1 / 1000 to ⁇ 4 / 1000 are respectively substituted.
  • Rn # ATAN (DWSn)
  • RAD radians
  • aR ⁇ (R1 # + R2 # + R3 # + R4 #) / 4.0 substitutes the average value of the radians (RAD) of the internal angles Atan (DWS1 to DWS4) for the variable aR. It represents that.
  • Rn ⁇ Rn # -aR indicates that the values obtained by subtracting the variable aR from the variables R1 # to R4 # are assigned to the variables R1 to R4, respectively.
  • R1 # + R2 # + R3 # + R4 # of the measured value of the inner angle of the calibration standard glass plate 36 is not zero. Even so, R1 + R2 + R3 + R4 is zero as described below.
  • both R3 * and R4 * are set to zero. If at least one of
  • the above processing is based on the assumption that the calibration standard glass plate 36 is a substantially parallelogram, and the sum of the angles of both ends of the sides with which the difference in length between opposite sides is compared (in the case of a true parallelogram) The difference in length between the long sides, so that this difference is proportionally distributed to the original angle value and the difference in side length is reflected in the squareness, The difference in length between the short sides is corrected.
  • the image processing apparatus 12 controls each illumination means 16 so as to illuminate the four corners of the calibration standard glass plate 36.
  • the imaging means 18C0 to 18C3 are controlled so as to capture images including the corner portions C1 to C4 at the four corners of the calibration standard glass plate 36, respectively.
  • Each illumination means 16 is turned on according to the control from the image processing device 12 and illuminates the four corners of the calibration standard glass plate 36. Further, each of the imaging means 18C0 to 18C3 captures images P1 to P4 including the corner portions C1 to C4 at the four corners of the calibration standard glass plate 36 according to the control from the image processing apparatus 12 (step S12).
  • FIG. 5 is an example of images P1 to P4 picked up by the image pickup means 18C0 to 18C3. The captured images P1 to P4 are taken into the image processing device 12.
  • the image processing device 12 uses the corner post coordinates (hereinafter referred to as CP coordinates) which are mm-converted coordinate values from the image origins at the four corners of the calibration standard glass plate 36 based on the captured images P1 to P4.
  • CP coordinates are mm-converted coordinate values from the image origins at the four corners of the calibration standard glass plate 36 based on the captured images P1 to P4.
  • C1LX to C4LX, C1LY to C4LY are calculated (steps S14 and S16).
  • each edge (horizontal edge EH, vertical edge EV, oblique edge EB) is detected and the horizontal / vertical edge EH is detected.
  • the intersection of EV and the oblique edge EB is obtained (step S14).
  • CP coordinates C1PX to C4PX, C1PY to C4PY and CC dimensions C1LX to C4LX, C1LY to C4LY are calculated (step S16).
  • the image processing apparatus 12 measures in advance the calculated CP coordinates C1PX to C4PX, C1PY to C4PY of the calibration standard glass plate 36, and each of the four sides of the calibration standard glass plate 36 stored in the storage means 12b.
  • Relative coordinates of the four imaging means 18C0 to 18C3 based on the length dimensions E1, E2, ER, EL and the approximate correction angles R1 *, R2 *, R3 *, R4 * stored in the storage means 12b S0 to S3 are calculated and stored in the storage means 12b (step S18).
  • the relative coordinates S0 to S3 of each of the four imaging units 18C0 to 18C3 are calculated using the formulas shown in Table 4 below.
  • FIG. 8 shows the relationship between the relative coordinates S0 to S3, approximate correction angles R1 * and R2 *, etc. of the four imaging means 18C0 to 18C3.
  • FIG. 9 is a flowchart for explaining a method of measuring the outer shape of the work glass plate 34.
  • the following processing is realized by the image processing apparatus 12 (calculation / control means) executing a predetermined program read into the storage means 12b or the like. It is assumed that the storage unit 12b stores the relative coordinates S0 to S3 of the four imaging units 18C0 to 18C3 in advance.
  • the stored relative coordinates S0 to S3 are read out from the storage means 12b and used as long as the arrangement of the imaging means 18C0 to 18C3 is the same as before. It is possible. That is, as long as the arrangement of the imaging units 18C0 to 18C3 is the same as the previous arrangement, the previously stored relative coordinates S0 to S3 can be reused, and it is not necessary to perform steps S10 to S18 each time.
  • the image processing apparatus 12 determines whether or not the work glass plate 34 has reached the measurement section 32 (step S20).
  • step S20 determines that the workpiece glass plate 34 to be measured has reached the measurement section 32 (in the predetermined imaging position) (step S20: YES), that is, the conveyance direction of the workpiece glass plate 34 from the sensor 20
  • Each of the illumination means 16 is controlled so as to illuminate the four corners of the work glass plate 34 that has reached the measurement section 32.
  • the imaging means 18C0 to 18C3 are controlled so as to capture images including the corner portions C1 to C4 at the four corners of the work glass plate 34, respectively.
  • Each illumination means 16 lights up according to the control from the image processing apparatus 12 and illuminates the four corners of the work glass plate 34. Further, each of the imaging units 18C0 to 18C3 controls the images p1 to p4 including the corner portions C1 to C4 at the four corners of the work glass plate 34 according to the control from the image processing device 12 (similar to the images P1 to P4 shown in FIG. 5). Image) is captured (step S22). The captured images p1 to p4 are taken into the image processing device 12.
  • the image processing device 12 calculates the CP coordinates c1Px to c4Px, c1Py to c4Py and the CC dimensions c1Lx to c4Lx, c1Ly to c4Ly of the four corners of the work glass plate 34 based on the captured images p1 to p4. (Steps S24 and S26).
  • each edge (horizontal edge EH, vertical edge EV, oblique edge EB) is detected in the same manner as shown in FIG.
  • the intersection of the vertical edges EH and EV and the oblique edge EB is obtained (step S24).
  • CP coordinates c1Px to c4Px, c1Py to c4Py and CC dimensions c1Lx to c4Lx, c1Ly to c4Ly are calculated (step S26).
  • the image processing apparatus 12 uses the calculated CP coordinates c1Px to c4Px and c1Py to c4Py of the work glass plate 34 and the relative coordinates S0 to S3 stored in the storage unit 12b to perform the work glass plate 34. Are calculated and stored in the storage means 12b (step S28).
  • the length dimensions E1, E2, ER, and EL of each of the four sides of the work glass plate 34 are calculated using the following formula.
  • the length dimensions E1, E2, ER, EL of each of the four sides of the work glass plate 34 are calculated and stored in the storage means 12b.
  • the image processing apparatus 12 calculates the calculated CP coordinates c1Px to c4Px, c1Py to c4Py, the relative coordinates S0 to S3 stored in the storage unit 12b, and the calculated length dimensions E1, E2, ER. , EL, the squares ⁇ 1 to ⁇ 4 at the four corners of the work glass plate 34 are calculated (step S28).
  • the internal angles r1 to r4 converted to radians (RAD) of each corner portion of the work glass plate 34 are calculated using the following formula, and the work glass is further calculated based on the internal angles r1 to r4.
  • the squares ⁇ 1 to ⁇ 4 at the four corners of the plate 34 are calculated.
  • the squares ⁇ 1 to ⁇ 4 at the four corners of the work glass plate 34 are calculated and stored in the storage means 12b.
  • the image processing apparatus 12 calculates predetermined lengths (settings) such as the calculated length dimensions E1, E2, ER, EL and squareness ⁇ 1 to ⁇ ⁇ ⁇ 4 of the four sides of the workpiece glass plate 34. Range), and based on the comparison result, whether the calculated length dimensions E1, E2, ER, EL and squareness ⁇ 1 to ⁇ 4 are within the standard value (setting range), that is, The quality of the outer shape of the work glass plate 34 is determined (step S30). Then, if the calculated length dimensions E1, E2, ER, EL and the perpendicular angles ⁇ 1 to ⁇ 4 are within the standard value (setting range) (step S30: YES), the image processing device 12 performs step S20.
  • predetermined lengths such as the calculated length dimensions E1, E2, ER, EL and squareness ⁇ 1 to ⁇ ⁇ 4 of the four sides of the workpiece glass plate 34. Range
  • steps S20 to S30 are repeated for the workpiece glass plate 34 that has reached the measurement section 32. That is, the shape is measured in a non-stop manner for each of the plurality of work glass plates 34 (see FIG. 3) conveyed on the measurement line 30.
  • the image processing device 12 displays an alarm or the like on the display 22. To that effect.
  • the method for measuring the external shape of the work glass plate of the present embodiment it is possible to correspond to the four corners of the work glass plate 34 in advance without moving the imaging means 18C0 to 18C3 in the XY directions as in the prior art.
  • the four image pickup means 18C0 to 18C3 arranged in this manner simultaneously (or substantially simultaneously) pick up images including the corner portions C1 to C4 of the four corners of the work glass plate 34, and based on the picked up images p1 to p4, etc.
  • the outer shape of the work glass plate 34 (the length dimension of each of the four sides of the work glass plate 34 and the perpendicularity of each of the four corners of the rectangular plate-like object) is calculated (steps S20 to S28). For this reason, it becomes possible to measure the shape in a non-stop manner for each of the plurality of work glass plates 34 (see FIG. 3) conveyed on the measurement line 30 and to improve the yield.
  • the external shape measuring method of the work glass plate of the present embodiment by using the (standard) calibration standard glass plate 36 in which the length dimension of each of the four sides and the squareness of each of the four corners are measured in advance, It is possible to calculate the relative coordinates of each of the four imaging units 18C0 to 18C3 which are the basis for calculating the outer shape of the work glass plate 34 (the length dimension of each of the four sides of the work glass plate 34 and the perpendicularity of each of the four corners). Become.
  • the calibration since the calibration includes the step S10 for correcting the squareness measured in advance at each of the four corners of the calibration standard glass plate 36, the calibration measured in advance. Even if a measurement error is included in the length dimension of each of the four sides of the standard glass plate 36 and the squareness of each of the four corners, the measurement error is offset. Therefore, it is possible to calculate the relative coordinates of each of the four imaging units 18C0 to 18C3 with higher accuracy.
  • the measurement object is the standard glass plate 36 for calibration and the work glass plate 34 with the four corners cut as shown in FIG. 5
  • the present invention is not limited to this.
  • the relative coordinates S0 to S3 are calculated, and the lengths E1, E2, ER and EL of the four sides of the workpiece glass plate 34, and the squares ⁇ 1 to ⁇ 4 at the four corners of the workpiece glass plate 34 are calculated. It is possible.
  • the measurement target is a glass plate that has undergone a cutting process, a chamfering process, and a cleaning / drying process
  • the present invention is not limited to this.
  • a glass plate before the cutting step, a glass plate before the chamfering step after the cutting step, and a glass plate before the cleaning / drying step after the chamfering step can be measured.
  • the rectangular plate-like object to be measured is a glass plate
  • the present invention is not limited to this.
  • the present invention can be similarly applied to other rectangular plates such as a wooden plate, a metal plate, and a resin plate.

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  • Length Measuring Devices By Optical Means (AREA)

Abstract

L'invention concerne un procédé de mesure de la forme extérieure d'un objet en plaque rectangulaire en cours de transport à l'aide d'un dispositif de mesure de forme muni de quatre moyens de capture d'image préalablement disposés de façon à correspondre aux quatre sommets de l'objet en plaque rectangulaire, et de moyens de stockage servant à stocker les coordonnées relatives des quatre moyens respectifs de capture d'image. Le procédé comporte une étape consistant à déterminer si l'objet en plaque rectangulaire a ou n'a pas atteint une section de mesure, une étape consistant à faire capturer par les quatre moyens de capture d'image les images comprenant les parties de coins au niveau des quatre sommets respectifs de l'objet en plaque rectangulaire ayant atteint la section de mesure, une étape consistant à calculer des coordonnées de montants de coins qui sont des valeurs de coordonnées par rapport à un point origine d'image des quatre sommets de l'objet en plaque rectangulaire sur la base des images capturées, et une étape consistant à calculer les longueurs des quatre côtés et l'équerrage des quatre sommets de l'objet en plaque rectangulaire sur la base des coordonnées calculées des montants de coins et des coordonnées relatives stockées dans les moyens de stockage.
PCT/JP2010/051975 2009-02-18 2010-02-10 Procédé de mesure de la forme extérieure d'un objet en plaque rectangulaire et procédé de calibrage de la position relative de moyens de capture d'image WO2010095551A1 (fr)

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JP2011500568A JPWO2010095551A1 (ja) 2009-02-18 2010-02-10 矩形板状物の外形形状測定方法、及び撮像手段の相対位置校正方法
KR1020117017865A KR101442895B1 (ko) 2009-02-18 2010-02-10 직사각형 판상물의 외형 형상 측정 방법 및 촬상 수단의 상대 위치 교정 방법
CN2010800061700A CN102301201B (zh) 2009-02-18 2010-02-10 矩形板状物的外形形状测量方法以及摄像单元的相对位置的校正方法

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JP2009-035732 2009-02-18
JP2009035732 2009-02-18

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102929105A (zh) * 2012-11-13 2013-02-13 美迪亚印刷设备（杭州）有限公司 曝光质量检测方法
JP2013163626A (ja) * 2012-02-13 2013-08-22 Asahi Glass Co Ltd 板状物の切線加工装置及び板状物の切線加工方法、ならびにガラス板の製造装置及びガラス板の製造方法
JP2013184838A (ja) * 2012-03-06 2013-09-19 Asahi Glass Co Ltd 板状物の切線加工装置及び板状物の切線加工方法、ならびにガラス板の製造装置及びガラス板の製造方法
EP3208020A1 (fr) 2016-02-19 2017-08-23 Siempelkamp Logistics & Service GmbH Dispositif et procédé de taille et de mesure d'une plaque

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108474647B (zh) * 2015-12-25 2020-08-04 松下知识产权经营株式会社 尺寸测量装置、包裹柜系统和尺寸测量方法
CN109520458A (zh) * 2018-11-28 2019-03-26 西安华运天成通讯科技有限公司 一种车载导航仪屏幕的厚度检测设备
CN110345876B (zh) * 2019-06-10 2022-01-25 重庆惠科金渝光电科技有限公司 偏光板材检测装置及偏光板材检测方法、可读存储介质

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0552526A (ja) * 1991-08-29 1993-03-02 Nkk Corp シート寸法測定装置
JPH06147836A (ja) * 1992-11-13 1994-05-27 Nkk Corp シート寸法測定装置
JP2003139510A (ja) * 2001-11-05 2003-05-14 Nippon Reliance Kk シート状の切断物測長方法および装置
JP2005227260A (ja) * 2004-01-16 2005-08-25 Fuji Photo Film Co Ltd シート形状測定方法及び装置

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH688755A5 (fr) * 1993-07-22 1998-02-27 Gianfranco Passoni Machine de mesure optique à caméra vidéo mobile, pour analyse électronique à haute vitesse des contours des objets.
US5910817A (en) * 1995-05-18 1999-06-08 Omron Corporation Object observing method and device
JP2000258121A (ja) * 1999-03-12 2000-09-22 Tdk Corp 複数カメラ校正用のマスター基板及び画像認識カメラの校正方法
ATE364165T1 (de) * 2000-09-22 2007-06-15 Werth Messtechnik Gmbh Verfahren zum messen einer objektgeometrie mittels eines koordinationsmessgerätes
US20040184040A1 (en) * 2001-07-17 2004-09-23 Hideto Fujita Shape measuring device
FR2895535B1 (fr) * 2005-12-22 2008-02-15 Renault Sas Dispositif electronique de commutation de charge electrique commande par microcontroleur
CN100523720C (zh) * 2006-06-08 2009-08-05 邱大明 光学非接触式三维形状测量仪

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0552526A (ja) * 1991-08-29 1993-03-02 Nkk Corp シート寸法測定装置
JPH06147836A (ja) * 1992-11-13 1994-05-27 Nkk Corp シート寸法測定装置
JP2003139510A (ja) * 2001-11-05 2003-05-14 Nippon Reliance Kk シート状の切断物測長方法および装置
JP2005227260A (ja) * 2004-01-16 2005-08-25 Fuji Photo Film Co Ltd シート形状測定方法及び装置

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013163626A (ja) * 2012-02-13 2013-08-22 Asahi Glass Co Ltd 板状物の切線加工装置及び板状物の切線加工方法、ならびにガラス板の製造装置及びガラス板の製造方法
JP2013184838A (ja) * 2012-03-06 2013-09-19 Asahi Glass Co Ltd 板状物の切線加工装置及び板状物の切線加工方法、ならびにガラス板の製造装置及びガラス板の製造方法
CN102929105A (zh) * 2012-11-13 2013-02-13 美迪亚印刷设备（杭州）有限公司 曝光质量检测方法
EP3208020A1 (fr) 2016-02-19 2017-08-23 Siempelkamp Logistics & Service GmbH Dispositif et procédé de taille et de mesure d'une plaque
EP3208020B1 (fr) * 2016-02-19 2024-07-10 Siempelkamp Logistics & Service GmbH Dispositif et procédé de taille et de mesure d'une plaque

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CN102301201A (zh) 2011-12-28
JPWO2010095551A1 (ja) 2012-08-23
KR20110126601A (ko) 2011-11-23
TW201100744A (en) 2011-01-01
KR101442895B1 (ko) 2014-09-19
CN102301201B (zh) 2013-02-27

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