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OpenCV 5.0

Open Source Computer Vision

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  • Main Page
  • Related Pages
  • Namespaces
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  • Examples
  • Java documentation
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Section Navigation

  • Introduction
  • How to use pre-built OpenCV binaries
  • OpenCV Tutorials
  • Python Tutorials
    • Introduction to OpenCV
    • Gui Features in OpenCV
    • Core Operations
    • Image Processing in OpenCV
      • Changing Colorspaces
      • Geometric Transformations of Images
      • Image Thresholding
      • Smoothing Images
      • Morphological Transformations
      • Image Gradients
      • Canny Edge Detection
      • Image Pyramids
      • Contours in OpenCV
        • Contours : Getting Started
        • Contour Features
        • Contour Properties
        • Contours : More Functions
        • Contours Hierarchy
      • Histograms in OpenCV
      • Image Transforms in OpenCV
      • Template Matching
      • Hough Line Transform
      • Hough Circle Transform
      • Image Segmentation with Watershed Algorithm
      • Interactive Foreground Extraction using GrabCut Algorithm
    • Feature Detection and Description
    • Video Analysis
    • Camera Calibration and 3D Reconstruction
    • Machine Learning
    • Computational Photography
    • OpenCV-Python Bindings
  • Javascript Tutorials
  • Contrib Tutorials
  • Main modules
  • Extra modules
  • Frequently Asked Questions
  • Bibliography
  • OpenCV-Python Tutorials
  • Image Processing in OpenCV
  • Contours in OpenCV

Contours in OpenCV#

  • Contours : Getting Started

    Learn to find and draw Contours

  • Contour Features

    Learn to find different features of contours like area, perimeter, bounding rectangle etc.

  • Contour Properties

    Learn to find different properties of contours like Solidity, Mean Intensity etc.

  • Contours : More Functions

    Learn to find convexity defects, pointPolygonTest, match different shapes etc.

  • Contours Hierarchy

    Learn about Contour Hierarchy

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Image Pyramids

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Contours : Getting Started

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