OpenCV examples in Python and C/C++

Process digital images with computer algorithms at Photogrammetry and Laser-based Vision Systems

Contents

• 1   Python Examples
  • 1.1   Fourier Transform
  • 1.2   Blur Detection
  • 1.3   Sharpening
• 2   C/C++ examples
  • 2.1   Image Pyramids
• 3   Requirements
  • 3.1   Python
  • 3.2   C++

1   Python Examples

1.1   Fourier Transform

• This module find the Fourier Transform of images
• Can help to find laser glare, reflects and dots in images
• Can help to remove or smooth reflects
• Files: fouruer_transform.py
• Dirs: sample
• Example:

1.2   Blur Detection

• This module detect blurry images
• Finds blurry and out off focus images
• Some blurry images can be sharpened by special filter but it needs to implementation and adjust the band pass filter between threshold A > pass > B
• Files: blur_detecion.py
• Dirs: sample

1.3   Sharpening

• This module sharpens images
• Destiny:
  • Can help to find image edges
  • Sharpening blurry images
  • Improves performance of photogrammetric processing and 3D spatial data. For example it can be used before Agisoft PhotoScan processing.
• Contents:
  • Files: sharpening.py
  • Dirs: sample
• Example:

2   C/C++ examples

2.1   Image Pyramids

• Program uses the OpenCV functions pyrUp and pyrDown to downsample or upsample given images in dir sample.
• Files: bin/Depug/Image Pyramids, main.cpp
• Dirs: sample
• Example:

3   Requirements

3.1   Python

• OpenCV v2.4.9
• Python v2.7.6 - 2.7.12
• NumPy v1.11.1

3.2   C++

• C++ 14
• OpenCV v2.4.9
• Boost v1.54.0