opencv-motion-detection

The project uses OpenCV 2.4 to detect any motion in a video stream from a camera, when a movement is detected, the frame is saved as an image file. Its part of Head First C's C Lab 2(opencv).

Requirements

• OpenCV 2.4 (later versions don't support C)
• GCC / Linux

Installation

Install OpenCV 2.4

1. Install dependencies:

   sudo apt-get update
   sudo apt-get install build-essential cmake git libgtk2.0-dev pkg-config libavcodec-dev libavformat-dev libswscale-dev
   sudo apt-get install python-dev python-numpy libtbb2 libtbb-dev libjpeg-dev libpng-dev libtiff-dev libdc1394-22-dev

2. Download and install OpenCV 2.4:

   git clone -b 2.4 https://github.com/opencv/opencv.git
   cd opencv

   mkdir build
   cd build
   cmake ..

   make -j4
   sudo make install
   sudo ldconfig

Usage

1. Clone this repository:

   git clone https://github.com/Numbers0689/opencv-motion-detection
   cd opencv-motion-detection

2. Run the Makefile:

   make

3. Run the program:

   ./detect

Working

• The program captures video from the default camera.
• It calculates the dense optical flow between consecutive frames using the Farneback method (cvCalcOpticalFlowFarneback()).
• If the motion detected between the two frames exceeds the given threshold value, the current frame is saved as an image file.
• The program also has a delay of 10secs which can be configured or removed as needed.