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Opencv + python + raspberry pi minimum required size on disk

asked 2015-12-10 02:22:29 -0500

WH gravatar image

I want to process image with my pi by using opencv. I have a 8gb sd card but I followed a toturial to set up opencv in pi, the error occured like disk space is not enough. Do you know the minimum disk space for these processes ???

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answered 2015-12-10 10:49:00 -0500

kbarni gravatar image

updated 2015-12-10 10:49:51 -0500

There are two ways to install OpenCV on a Raspberry Pi:

  • Use the Debian repositories (sudo apt-get install libopencv-dev). This is the simplest way, but you'll only get OpenCV 2.4.9, and you won't be able to customize the install. It takes around 80M when installed.
  • Compile the sources yourself. The compiled code takes more than 4GB disk space (that's why you are having problems), but the installed libs take <100M. If you don't have enough space on the SD card, I suggest to use a USB stick or an external hard disk for the build directory. After installing OpenCV, you can delete the build directory.
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I would like to compile sources myself as you described on the second point, but I am completely new to the rasp pi 2.

Can I plug my USB into a laptop, download the build directory onto the USB, then do:

  • $ unzip opencv-2.4.10.zip
  • $ cd opencv-2.4.10
  • $ mkdir build
  • $ cd build
  • $ cmake -D CMAKE_BUILD_TYPE=RELEASE -D CMAKE_INSTALL_PREFIX=/usr/local -D BUILD_NEW_PYTHON_SUPPORT=ON -D INSTALL_C_EXAMPLES=ON -D INSTALL_PYTHON_EXAMPLES=ON -D BUILD_EXAMPLES=ON ..
  • $ make
  • $ sudo make install
  • $ sudo ldconfig
camilap gravatar imagecamilap ( 2017-03-04 13:04:05 -0500 )edit

Just follow the official guide, it works.

For easier configuration I suggest to use cmake-gui. There are lots of customization options.

kbarni gravatar imagekbarni ( 2017-03-06 06:05:44 -0500 )edit
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Asked: 2015-12-10 02:22:29 -0500

Seen: 6,374 times

Last updated: Dec 10 '15