COMPRESOR DE IMÁGENES USANDO QUAD-TREE

PRE-REQUISITOS

DISTRO

🔵 Linux - Xubuntu

HAMACHI

Descargar instalador acorde a la arquitectura del procesador (32 o 64 bits)

cd ~/User/Carpeta_Contenedora_Descarga
sudo dpkg -i logmein-hamachi_2.1.0.203-1_amd64.deb
sudo -i
hamachi login
hamachi attach <[email protected]>
hamachi do-join <Red-Virtual>
hamachi
"Ctrl + D"

Configurar los nodos de la red

cd ~
sudo nano /etc/hosts

Modificar el archivo hosts con las direcciones ip y nombres de cada una

xxx.xxx.xxx.xxx     master
xxx.xxx.xxx.xxx     worker1
xxx.xxx.xxx.xxx     worker2

SSH (Secure Shell)

Instalar y configurar las dependencias de SSH

sudo apt-get install openssh-server
mkdir ~/.ssh
chmod 700 ~/.ssh
ssh-keygen -t rsa
/home/mpiu/.ssh/id_rsa_<worker n>
scp id_rsa_<worker n>.pub <tu_usuario>@master:~/.ssh
cat /home/<master_user>/.ssh/id_rsa_master.pub >> /home/<master_user>/.ssh/authorized_keys
cd ~
sudo nano /etc/ssh/sshd_config

PermitRootLogin yes
RSAAuthentication yes
PubkeyAuthentication yes
PasswordAuthentication yes

sudo service ssh restart
ssh master

NFS (Network File System)

Master

sudo apt-get install nfs-kernel-server
sudo mkdir -p /home/<tu_usuario>/share
sudo chown nobody:nogroup /home/<tu_usuario>/share
sudo chmod 777 /home/<tu_usuario>/share
sudo nano /etc/exports

/home/<tu_usuario>/share worker1(rw,sync,no_subtree_check)
/home/<tu_usuario>/share worker2(rw,sync,no_subtree_check)
sudo exportfs -a
sudo systemctl restart nfs-kernel-server

sudo ufw status

Worker

sudo apt-get install nfs-common
sudo mkdir ~/share
cd ~
sudo nano /etc/fstab
master:/home/<tu_usuario>/share home/mpiu/share nfs
Ctrl+O ENTER Ctrl+X

sudo mount -a
sudo ufw status

OpenMPI (Message Passing Interface)

sudo apt-get update
sudo apt-get install gcc openmpi-bin openmpi-common libopenmpi-dev libgtk2.0-dev 

Descargar la carpeta comprimida y después de la extracción

cd ~/User/Carpeta_Contenedora_Descarga/openmpi-<version_descargada>/
./configure --prefix="/home/<tu_usuario>/.openmpi"
make
sudo make install
ahora exportar el PATH
export PATH="$PATH:/home/<tu_usuario>/.openmpi/bin"
export LD_LIBRARY_PATH="$LD_LIBRARY_PATH:/home/<tu_usuario>/.openmpi/lib"

OPENCV para C++

Actualizar las dependencias previas

sudo apt-get update && sudo apt-get upgrade
sudo apt install software-properties-common apt-file
sudo apt-get install build-essential cmake git libgtk2.0-dev pkg-config libavcodec-dev libavformat-dev libswscale-dev
sudo apt-add-repository ppa:deadsnakes/ppa
sudo apt-get install libtbb2 libtbb-dev

sudo apt-add-repository "deb http://security.ubuntu.com/ubuntu xenial-security main"
sudo apt update
sudo apt install libjasper1 libjasper-dev

Instalar OpenCV

sudo -s
cd ~ && cd /opt
git clone https://github.com/Itseez/opencv.git
git clone https://github.com/Itseez/opencv_contrib.git
cd opencv
mkdir release
cd release
cmake -D BUILD_TIFF=ON -D WITH_CUDA=OFF -D ENABLE_AVX=OFF -D WITH_OPENGL=OFF -D WITH_OPENCL=OFF -D WITH_IPP=OFF -D WITH_TBB=ON -D BUILD_TBB=ON -D WITH_EIGEN=OFF -D WITH_V4L=OFF -D WITH_VTK=OFF -D BUILD_TESTS=OFF -D BUILD_PERF_TESTS=OFF -D OPENCV_GENERATE_PKGCONFIG=ON -D CMAKE_BUILD_TYPE=RELEASE -D CMAKE_INSTALL_PREFIX=/usr/local -D OPENCV_EXTRA_MODULES_PATH=/opt/opencv_contrib/modules /opt/opencv/
make -j4
make install
ldconfig
exit

cd ~
apt-file search opencv.pc
ls /usr/local/lib/pkgconfig/
sudo cp /usr/local/lib/pkgconfig/opencv4.pc  /usr/lib/x86_64-linux-gnu/pkgconfig/opencv.pc
pkg-config --modversion opencv

Compilacion y ejecucion

Compilar con makefile

make
mkdir compressed_image
mkdir test

Ejecutar

mpirun -host master,worker1,worker2 ./compress_image <src de la imagen> <threshold>

Ejemplo

mpirun -host master,worker1,worker2 ./compress_image test01.jpg 5

Esto comprimira la imagen de manera distribuida en 16 pequeñas partes para juntarlas se debe correl el otro programa, el cual juntara la imagen en una sola y la guarda en la carpeta test

./join_image