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以動差為基礎之智能影像量測技術_電光所-賴岳益博士
- 2. 工業技術研究院內部資訊，禁止複製、轉載、外流，不再使用請銷毀│ ITRI proprietary documents, do not copy or distribute, please destroy after use 2 Outline • Introduction of AOI • Pattern Matching • Results and Discussion • HAWK AOI System
- 3. 工業技術研究院內部資訊，禁止複製、轉載、外流，不再使用請銷毀│ ITRI proprietary documents, do not copy or distribute, please destroy after use 3 Automatic Optical Inspection Lighting Capturing Processing Data Collection AOI
- 4. 工業技術研究院內部資訊，禁止複製、轉載、外流，不再使用請銷毀│ ITRI proprietary documents, do not copy or distribute, please destroy after use 4 Pattern Matching • Automatic Measurement • User friendly – To place the object at arbitrary position and angle • How to do? – Brute force • 2560 x 1920 • Pattern: – 1040 x 984 Pattern Captured Image 1520 x 936 x 360 = 512179200 !! (8536.32 min. = 142.27 hrs. = 5.93 days)
- 5. 工業技術研究院內部資訊，禁止複製、轉載、外流，不再使用請銷毀│ ITRI proprietary documents, do not copy or distribute, please destroy after use 5 Hierarchical Approach Original Image 1/4 size Image 1/16 size Image 1/64 size Image Pattern Captured Image (40 x 30) (160 x 120) (640 x 480) (2560 x 1920) 40 x 30 x 360 = 432000 20 x 20 x 20 = 8000 20 x 20 x 20 = 8000 20 x 20 x 20 = 8000 456000 !! (7.6 min. << 8536 min.)
- 6. 工業技術研究院內部資訊，禁止複製、轉載、外流，不再使用請銷毀│ ITRI proprietary documents, do not copy or distribute, please destroy after use 6 Hierarchical Approach But, how about this object? Original Image 1/4 size Image 1/16 size Image 1/64 size Image Pattern Cannot detect the orientation!!
- 7. 工業技術研究院內部資訊，禁止複製、轉載、外流，不再使用請銷毀│ ITRI proprietary documents, do not copy or distribute, please destroy after use 7 動差(moment)智能影像量測技術 7 • Moment of an image • Central moments • Symmetric Axis with a,b, and c respectively being the 2nd central moments μpq defined as: pq=20, 02 and 11 𝑀𝑖𝑗 = 𝑥𝑖 𝑦𝑗 𝐼(𝑥, 𝑦) 𝑦𝑥 𝜇 𝑝𝑞 = 𝑥 − 𝑥 𝑝 𝑦 − 𝑦 𝑞 𝑓(𝑥, 𝑦) 𝑦𝑥 sin 2𝜃 = ±𝑏 𝑏2 + (𝑎 − 𝑐)2 References: • Image analysis by moments, PhD thesis, S.X. Liao http://docs.opencv.org/modules/imgproc/doc/structural_analysis_and_shape_descriptors.html?highlight=moments#moments • “Visual Pattern Recognition by Moment Invariants", Ku, 1962 http://homepages.inf.ed.ac.uk/rbf/CVonline/LOCAL_COPIES/OWENS/LECT2/node3.html Orientation of group of points θ
- 8. 工業技術研究院內部資訊，禁止複製、轉載、外流，不再使用請銷毀│ ITRI proprietary documents, do not copy or distribute, please destroy after use 8 Verifications of Rotation Angle 0.99º1º 3º 1º1º 1º 3º 1.01º 3.00º 3.00º 3º 3.00º
- 9. 工業技術研究院內部資訊，禁止複製、轉載、外流，不再使用請銷毀│ ITRI proprietary documents, do not copy or distribute, please destroy after use 9 Pattern Matching 𝜇 𝑝𝑞 = 𝑥 − 𝑥 𝑝 𝑦 − 𝑦 𝑞 𝑓(𝑥, 𝑦) 𝑦𝑥 sin 2𝜃 = ±𝑏 𝑏2 + (𝑎 − 𝑐)2 Computation Time: 276.945 ms!!
- 10. 工業技術研究院內部資訊，禁止複製、轉載、外流，不再使用請銷毀│ ITRI proprietary documents, do not copy or distribute, please destroy after use 10 Experimental Results _1 Pattern Image Matching Result_1 Matching Result_2 Matching Result_3 Process Time: 320 ms (image size: 3840 x 2748)
- 11. 工業技術研究院內部資訊，禁止複製、轉載、外流，不再使用請銷毀│ ITRI proprietary documents, do not copy or distribute, please destroy after use 11 Experimental Results _2 Pattern Image Matching Result_1 Matching Result_2 Matching Result_3 Process Time: 297 ms (image size: 3840 x 2748)
- 12. 工業技術研究院內部資訊，禁止複製、轉載、外流，不再使用請銷毀│ ITRI proprietary documents, do not copy or distribute, please destroy after use 12 Experimental Results _3 Pattern Image Matching Result_1 Matching Result_2 Matching Result_3 Process Time: 304 ms (image size: 3840 x 2748)
- 13. 工業技術研究院內部資訊，禁止複製、轉載、外流，不再使用請銷毀│ ITRI proprietary documents, do not copy or distribute, please destroy after use 13 Outline • Introduction of AOI • Pattern Matching • Results and Discussion • HAWK AOI System
- 14. 工業技術研究院內部資訊，禁止複製、轉載、外流，不再使用請銷毀│ ITRI proprietary documents, do not copy or distribute, please destroy after use 14 Performance of HAWK AOI System • Accuracy – Target: 光學標準片 • 國家標準實驗室送校 – 測試程序 • 每個量測項目測試15筆資料 1 2 3 4 5 圓徑 實測值 6 6.00025 10 9.99676 14 13.99846 18 17.99488 22 21.99642 24台量測誤差皆小於 3 m !!
- 15. 工業技術研究院內部資訊，禁止複製、轉載、外流，不再使用請銷毀│ ITRI proprietary documents, do not copy or distribute, please destroy after use 15 Performance of HAWK AOI System • Repeatability – How to setup the standard deviation (1)? 1σ=1.5 μm GRR=7.5% (USL-LSL= 20μm) Ca=5% Cp=2.22 Cpk=2.1 A級 A+級 A+級 廠商最嚴謹需求：0.02 mm 0.04 mm 0.04 10% = 0.004 mm = 4 m 必須滿足99% (5.15) 的測試範圍 4 / 5.15 = 0.77 m Excellent: 0.77 m Good: 1.54 m Normal: 2.21 m Normal 2.21 m Good 1.54 m Excellent 0.77 m
- 16. 工業技術研究院內部資訊，禁止複製、轉載、外流，不再使用請銷毀│ ITRI proprietary documents, do not copy or distribute, please destroy after use 16 • GR&R Analysis – AIAG standards • 10 parts, 3 appraisers, and 3 trials % Total Tolerance Percent Equipment Variation %EV = 100 [ EV / Total ] = 100 [0.0185 / 0.2 ] = 9.25 % Percent Appraiser Variation %AV = 100 [ AV / Total ] = 100 [0.0052 / 0.2 ] = 2.6 % Percent Gage Repeatability & Reproducibility Variation %GRR = 100 [ GRR / Total ] = 100 [0.0192 / 0.2 ] = 9.6 % 8.177 mm Performance of HAWK AOI System
- 17. 工業技術研究院內部資訊，禁止複製、轉載、外流，不再使用請銷毀│ ITRI proprietary documents, do not copy or distribute, please destroy after use 17 生產線上精密量測機 • 高量測重現精度 ±3μ(2σ) • 適用於CNC產線的IPQC全檢系統 • 連結製程統計管理系統 (SPC) • 授權國內自動化業者生產，設備完全國產化。 Aerospace fasteners Rough machining CNC machining center intermediate machining Precision Image Insepction + SPC
- 18. 工業技術研究院內部資訊，禁止複製、轉載、外流，不再使用請銷毀│ ITRI proprietary documents, do not copy or distribute, please destroy after use 18 Conclusion • Pattern Matching – Image Moment • Computation Time – 8536 min 7.6 mm 276.9 ms • Measure Performance – Accuracy < 3 m – Stability (1 ) < 3 m
- 19. 工業技術研究院內部資訊，禁止複製、轉載、外流，不再使用請銷毀│ ITRI proprietary documents, do not copy or distribute, please destroy after use 19 專心追求卓越，成功自然就會跟著你！ Chase Excellence, Success will follow.