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Keyence

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Keyence

  1. 1. Keyence – Vision System
  2. 2. Overview <ul><li>Image Processing </li></ul><ul><li>Basics of Image Processing </li></ul><ul><li>Principle of Image Processing </li></ul><ul><li>Inspection Functions </li></ul><ul><li>Explanation of Functions </li></ul>
  3. 3. 1.Image Processing <ul><li>將 CCD 補抓到的影像轉成數位訊號,之後 經過各種演算處理,取得所需結果 </li></ul>
  4. 4. 2. Basics of Img Proc <ul><li>CCD 所儲存的電荷與入射光 Brightness 成正比 </li></ul>2.1 Image output from CCD Camera
  5. 5. 2. Basics of Img Proc <ul><li>Non-Interlaced </li></ul><ul><li>Interlaced </li></ul>2.2 Image Scanning 循序 (1~525) 30 frames/sec Odd First, then Even 30 frames/sec
  6. 6. 2. Basics of Img Proc <ul><li>Threshold Voltage </li></ul>2.3 Binary Digital Conversion >Vt White <Vt Black
  7. 7. 2. Basics of Img Proc <ul><li>像素資料傳送位置由時序決定 </li></ul>2.4 Pixels Clock/PLL
  8. 8. 2. Basics of Img Proc <ul><li>Base on the Brightness graduation data </li></ul><ul><li>Binary Conversion – 2 Level Grayscale _ 紀錄單位 </li></ul>2.5 Grayscale Processing
  9. 9. 2. Basics of Img Proc <ul><li>R/G/B/(R-G)/(B-G)/(R-B) </li></ul>2.6 Color Processing
  10. 10. 2. Basics of Img Proc <ul><li>選出特定顏色,定其值為 255 </li></ul>2.7 Color Shade-Scale Processing
  11. 11. 3. Principle of Img Proc <ul><li>Recognize the Pattern of an Image </li></ul><ul><li>Pattern matching with Gray-Scale Proc </li></ul>3.1 Pattern Matching 將欲辨識圖形暫存起來 (Pattern Window) ,與目標圖形比對 將目標圖形與參考圖形,點對點比對
  12. 12. 3. Principle of Img Proc <ul><li>Pattern matching with Color Extraction </li></ul>將目標圖形與參考圖形,點對點比對 3.1 Pattern Matching
  13. 13. 3. Principle of Img Proc <ul><li>進行 次像素處理 (Sub-Pixel Processing) 能量測到 0.1 Pixels 單位 </li></ul>3.2 Sub-Pixel Processing
  14. 14. 3. Principle of Img Proc <ul><li>Accurate Pattern Matching Without Being Affected by Changes in Brightness </li></ul>3.3 Normalized Correlation Method 將圖形做正規化 ( 減去平均亮度 ) ,去除周圍光線的影響
  15. 15. 3. Principle of Img Proc <ul><li>藉由亮度變化判斷 </li></ul>3.4 Edge Detection
  16. 16. 3. Principle of Img Proc <ul><li>將影像轉為黑白 (Binary Image) ,再予鄰近相同顏色之區塊編為同一 Label </li></ul>3.5 Labeling Processing
  17. 17. 4. Inspection Functions <ul><li>Detect Target Position </li></ul>4.1 Absolute Position Detection 圈選目標,再與以測定之全圖比較,得出中心位址
  18. 18. 4. Inspection Functions <ul><li>Detect the Relative Position of Two Targets </li></ul>4.2 Relative Position Detection
  19. 19. 4. Inspection Functions <ul><li>Count the Number of the Pixels in the Specified Area </li></ul>4.3 Area Sensor (Binary Conversion)
  20. 20. 4. Inspection Functions <ul><li>Measure the Distance between the Edges Detected </li></ul>4.4 Dimension Measurement
  21. 21. 4. Inspection Functions <ul><li>Count the Number of Labels </li></ul><ul><li>AREAFILT </li></ul>4.5 Count
  22. 22. 4. Inspection Functions <ul><li>Detect the Presence or Absence of the Specified Range (Point) </li></ul>4.6 POINT (Point Sensor)
  23. 23. 4. Inspection Functions <ul><li>以 Segment 為掃描單位 </li></ul><ul><li>計算平均的 Brightness 差值 </li></ul><ul><li>如超出特定值發出 NG 信號 </li></ul><ul><li>Segment Size/Detection Level </li></ul>4.7 STAIN (Flaw Detection)
  24. 24. 4. Inspection Functions <ul><li>Measure the Center-of-Gravity Position and the Principle Axis Angle of the Label </li></ul>GRAVITY (Center-of-Gravity Position Measurement)
  25. 25. 5. Explanation of Func <ul><li>Detect the Position in the X- and Y- Axis Directions and the Rational Angle of the Target </li></ul>5.1 Position Adjustment
  26. 26. 5. Explanation of Func <ul><li>Correct the Brightness of the Entire Screen to Prevent Erroneous Detection </li></ul><ul><li>“Illumination Range” </li></ul>5.2 Illumination Adjustment
  27. 27. 5. Explanation of Func <ul><li>A Single Controller Connect 2 Camera to Capture Image at the Same Time with 1 Shutter Action </li></ul><ul><li>Eliminate the Time Lag for Switching Cameras / Magnify </li></ul>5.3 2-Camera Connection Function
  28. 28. 5. Explanation of Func <ul><li>3 x 3 Pixel Area Around Target Pixel </li></ul>5.4 Filter Function
  29. 29. 5. Explanation of Func <ul><li>EXPAND </li></ul>5.4 Filter Function
  30. 30. 5. Explanation of Func <ul><li>SHRINK </li></ul>5.4 Filter Function
  31. 31. 5. Explanation of Func <ul><li>MEDIAN </li></ul>5.4 Filter Function
  32. 32. 5. Explanation of Func <ul><li>AVE </li></ul>5.4 Filter Function
  33. 33. 5. Explanation of Func <ul><li>E-ENHANCE </li></ul>5.4 Filter Function
  34. 34. 5. Explanation of Func <ul><li>EXTRACTION </li></ul>5.4 Filter Function
  35. 35. 5. Explanation of Func <ul><li>SHADING </li></ul>5.4 Filter Function
  36. 36. 5. Explanation of Func <ul><li>INT-UP </li></ul>5.4 Filter Function
  37. 37. 5. Explanation of Func <ul><li>TINT-UP </li></ul>5.4 Filter Function
  38. 38. 5. Explanation of Func <ul><li>INVERT </li></ul>5.4 Filter Function

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