Installing OpenCV in Linux

Install dependecies:

$sudo apt-get install build-essential libgtk2.0-dev libjpeg-dev libtiff4-dev libjasper-dev libopenexr-dev cmake python-dev python-numpy python-tk libtbb-dev libeigen2-dev yasm libfaac-dev libopencore-amrnb-dev libopencore-amrwb-dev libtheora-dev libvorbis-dev libxvidcore-dev libx264-dev libqt4-dev libqt4-opengl-dev sphinx-common texlive-latex-extra libv4l-dev libdc1394-22-dev libavcodec-dev libavformat-dev libswscale-dev

$mkdir OpenCV
$cd OpenCV
$git clone https://github.com/Itseez/opencv.git
$cmake CMakeLists.txt
$make
$sudo make install


Make a file under /etc.ld.so.conf.d folder. Name it opencv.conf
Write /usr/local/lib/ and save the file.

$sudo gedit /etc/ld.so.conf.d/opencv.conf
$sudo ldconfig -v

Set the system variables:

$export LD_LIBRARY_PATH=/usr/local/lib/:$LD_LIBRARY_PATH
$sudo ldconfig

$export LD_LIBRARY_PATH=~/opencv/OpenCV-2.0.3/release/:$LD_LIBRARY_PATH
$sudo ldconfig

$sudo gedit /etc/bash.bashrc

Type this to the last line of bash.bashrc:

PKG_CONFIG_PATH=$PKG_CONFIG_PATH:/usr/local/lib/pkgconfig
export PKG_CONFIG_PATH

Installing LIBLAS in Linux

Start with installing GDAL, Libgeotiff and Laszip libraries which will be necessary to build LIBLAS.

Installing GDAL (this might take an hour):

$sudo apt-get install build-essential python-all-dev
$wget http://download.osgeo.org/gdal/gdal-1.9.0.tar.gz
$tar xvfz gdal-1.9.0.tar.gz
$cd gdal-1.9.0
$./configure --with-python
$make
$sudo make install    

Installing Libgeotiff:

sudo apt-get install proj proj-bin proj-data libproj-dev libtiff4-dev libgeotiff-dev libgdal1-dev gdal-bin python-gdal libgdal1-1.7.0

Installing Laszip:

cd /opt/source
wget http://download.osgeo.org/laszip/laszip-2.1.0.tar.gz
tar xvfz laszip-2.1.0.tar.gz
cd laszip-2.1.0
mkdir build
mkdir cmake_build
cd cmake_build
# run cmake
cmake .. -DCMAKE_INSTALL_PREFIX=/opt/source/laszip-2.1.0/build
# compile
make -j$threads
# install into build dir
make install

Finally now you can download LIBLAS source codes and install by typing:

$ git clone git://github.com/libLAS/libLAS.git liblas
$ cd liblas
$ mkdir makefiles
$ cd makefiles
$ cmake -G "Unix Makefiles" ../
$ make