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How to install OpenCV 3.1 on Raspbian Jessie (Lite)

Installing OpenCV 3.1 on Raspbian Jessie

Prerequisites

  • Keep your system up to date:
    • $ sudo apt-get update
    • $ sudo apt-get upgrade
    • $ sudo reboot
  • Make sure you've got an internet connection.
  • Make sure you've got
    • wget
    • unzip

Installation

Run the script install-opencv.sh

#!/usr/bin/env bash
OPENCV_VERSION="3.1.0"
OPENCV_URL="https://github.com/Itseez/opencv/archive/${OPENCV_VERSION}.zip"
OPENCV_PACKAGE_NAME="opencv-${OPENCV_VERSION}"
OPENCV_CONTRIB_URL="https://github.com/Itseez/opencv_contrib/archive/${OPENCV_VERSION}.zip"
OPENCV_CONTRIB_PACKAGE_NAME="opencv_contrib-${OPENCV_VERSION}"
PREFIX="${PREFIX:-/usr/local}"
MAKEFLAGS="${MAKEFLAGS:--j 4}"
install_build_dependencies() {
local build_packages="build-essential git cmake pkg-config"
local image_io_packages="libjpeg-dev libtiff5-dev libjasper-dev \
libpng12-dev"
local video_io_packages="libavcodec-dev libavformat-dev \
libswscale-dev libv4l-dev \
libxvidcore-dev libx264-dev"
local gtk_packages="libgtk2.0-dev"
local matrix_packages="libatlas-base-dev gfortran"
local python_dev_packages="python2.7-dev python3-dev python-pip python3-pip"
sudo apt-get install -y $build_packages $image_io_packages $gtk_packages \
$video_io_packages $matrix_packages $python_dev_packages
}
install_global_python_dependencies() {
sudo pip install virtualenv virtualenvwrapper
}
install_local_python_dependences() {
pip install numpy
}
download_packages() {
wget -c -O "${OPENCV_PACKAGE_NAME}.zip" "$OPENCV_URL"
wget -c -O "${OPENCV_CONTRIB_PACKAGE_NAME}.zip" "$OPENCV_CONTRIB_URL"
}
unpack_packages() {
# unzip args:
# -q = quiet
# -n = never overwrite existing files
unzip -q -n "${OPENCV_PACKAGE_NAME}.zip"
unzip -q -n "${OPENCV_CONTRIB_PACKAGE_NAME}.zip"
}
setup_virtualenv() {
export WORKON_HOME="$HOME/.virtualenvs"
source /usr/local/bin/virtualenvwrapper.sh
mkvirtualenv -p python3 cv
workon cv
install_local_python_dependences
}
build() {
cmake -D CMAKE_BUILD_TYPE=RELEASE \
-D CMAKE_INSTALL_PREFIX="$PREFIX" \
-D INSTALL_C_EXMAPLES=ON \
-D INSTALL_PYTHON_EXAMPLES=ON \
-D OPENCV_EXTRA_MODULES_PATH="$HOME/$OPENCV_CONTRIB_PACKAGE_NAME/modules" \
-D BUILD_EXAMPLES=ON \
..
make ${MAKEFLAGS}
}
install() {
sudo make install
sudo ldconfig
}
log() {
local msg="$1"; shift
local _color_bold_yellow='\e[1;33m'
local _color_reset='\e[0m'
echo -e "\[${_color_bold_yellow}\]${msg}\[${_color_reset}\]"
}
main() {
log "Installing build dependencies..."
install_build_dependencies
log "Downloading OpenCV packages..."
download_packages
log "Unpacking OpenCV packages..."
unpack_packages
log "Installing global python deps..."
install_global_python_dependencies
log "Setting up local python environment..."
setup_virtualenv
log "Building OpenCV..."
cd "$OPENCV_PACKAGE_NAME"
mkdir build
cd build
build
echo "Installing OpenCV..."
install
}
main
@aa110711
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Urr...
How do I get into the environment where CV is loaded ?

'workon cv' din't work...

import cv2
ImportError: No module named 'cv2'

@aa110711
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pls help us!!!! its urgent

@aa110711
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i try install opencv 3 based on steps provided in pyimagesearch.com

@aa110711
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but i get error as stated above

@mapodev
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mapodev commented May 21, 2017

I get this error

[ 49%] Built target opencv_imgcodecs
[ 49%] Linking CXX shared library ../../lib/libopencv_videoio.so
/usr/bin/ld: /usr/local/lib/libx264.a(common.o): relocation R_ARM_MOVW_ABS_NC against `a local symbol' can not be used when making a shared object; recompile with -fPIC
/usr/local/lib/libx264.a: error adding symbols: Bad value
collect2: error: ld returned 1 exit status
modules/videoio/CMakeFiles/opencv_videoio.dir/build.make:254: recipe for target 'lib/libopencv_videoio.so.3.2.0' failed
make[2]: *** [lib/libopencv_videoio.so.3.2.0] Error 1
CMakeFiles/Makefile2:5596: recipe for target 'modules/videoio/CMakeFiles/opencv_videoio.dir/all' failed
make[1]: *** [modules/videoio/CMakeFiles/opencv_videoio.dir/all] Error 2
Makefile:160: recipe for target 'all' failed
make: *** [all] Error 2
Installing OpenCV...
[  3%] Built target libwebp
[  8%] Built target IlmImf
[ 11%] Built target carotene_objs
[ 12%] Built target tegra_hal
[ 12%] Built target opencv_core_pch_dephelp
[ 13%] Built target pch_Generate_opencv_core
[ 16%] Built target opencv_core
[ 17%] Built target opencv_ts_pch_dephelp
[ 17%] Built target pch_Generate_opencv_ts
[ 17%] Built target opencv_imgproc_pch_dephelp
[ 17%] Built target pch_Generate_opencv_imgproc
[ 21%] Built target opencv_imgproc
[ 21%] Built target opencv_imgcodecs_pch_dephelp
[ 21%] Built target pch_Generate_opencv_imgcodecs
[ 22%] Built target opencv_imgcodecs
[ 22%] Built target opencv_videoio_pch_dephelp
[ 22%] Built target pch_Generate_opencv_videoio
[ 22%] Linking CXX shared library ../../lib/libopencv_videoio.so
/usr/bin/ld: /usr/local/lib/libx264.a(common.o): relocation R_ARM_MOVW_ABS_NC against `a local symbol' can not be used when making a shared object; recompile with -fPIC
/usr/local/lib/libx264.a: error adding symbols: Bad value
collect2: error: ld returned 1 exit status
modules/videoio/CMakeFiles/opencv_videoio.dir/build.make:254: recipe for target 'lib/libopencv_videoio.so.3.2.0' failed
make[2]: *** [lib/libopencv_videoio.so.3.2.0] Error 1
CMakeFiles/Makefile2:5596: recipe for target 'modules/videoio/CMakeFiles/opencv_videoio.dir/all' failed
make[1]: *** [modules/videoio/CMakeFiles/opencv_videoio.dir/all] Error 2
Makefile:160: recipe for target 'all' failed
make: *** [all] Error 2

@darshisen
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Guys - If you got stuck here - follow these steps: https://imaginghub.com/projects/144-installing-opencv-3-on-raspberry-pi-3/documentation

Pay careful attention to this path: OPENCV_EXTRA_MODULES_PATH=~/opencv_contrib-3.1.0/modules

Make sure it points to where yours is.

Best,
Darshi

@avinashpatel57
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Nice script. It installed opencv for me without any error. Thanks

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