.rst .pdf

4. Contours in OpenCV

• 4.1. Contours : Getting Started
  • 4.1.1. What are contours?
  • 4.1.2. How to draw the contours?
  • 4.1.3. Contour Approximation Method
  • 4.1.4. Additional Resources
  • 4.1.5. Exercises
• 4.2. Contour Features
  • 4.2.1. 1. Moments
  • 4.2.2. 2. Contour Area
  • 4.2.3. 3. Contour Perimeter
  • 4.2.4. 4. Contour Approximation
  • 4.2.5. 5. Convex Hull
  • 4.2.6. 6. Checking Convexity
  • 4.2.7. 7. Bounding Rectangle
  • 4.2.8. 8. Minimum Enclosing Circle
  • 4.2.9. 9. Fitting an Ellipse
  • 4.2.10. 10. Fitting a Line
  • 4.2.11. Additional Resources
  • 4.2.12. Exercises
• 4.3. Contour Properties
  • 4.3.1. 1. Aspect Ratio
  • 4.3.2. 2. Extent
  • 4.3.3. 3. Solidity
  • 4.3.4. 4. Equivalent Diameter
  • 4.3.5. 5. Orientation
  • 4.3.6. 6. Mask and Pixel Points
  • 4.3.7. 7. Maximum Value, Minimum Value and their locations
  • 4.3.8. 8. Mean Color or Mean Intensity
  • 4.3.9. 9. Extreme Points
  • 4.3.10. Additional Resources
  • 4.3.11. Exercises
• 4.4. Contours : More Functions
  • 4.4.1. Theory and Code
  • 4.4.2. Additional Resources
  • 4.4.3. Exercises
• 4.5. Contours Hierarchy
  • 4.5.1. Theory
  • 4.5.2. Contour Retrieval Mode
  • 4.5.3. Additional Resources
  • 4.5.4. Exercises

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4.1. Contours : Getting Started