- Empirical line method -> Scripts of Matlab about of radiometric calibration for low-cost cameras.
- NDVI-Raspberry -> Scripts in Python for calculate of NDVI emmbedded in the Raspberry Pi Zero, 2 and 3 with instructions of use.
- SFTP -> Script in Python for sent images through SFTP protocole between Ubuntu server and Client Raspberry Pi. With instructions of use.
- Backstage -> Other Python scripts that served of support, of learning. To build the definitives.
First configure auto-login as use 'pi' because by default always the OS requires user and password login.
sudo raspi-config
After select the option 3.' Boot Options', after option B1. 'Desktop / CLI' finally choose option B2 "Console Autologin - Text console, automacally logged in as 'pi' user"
NOTE: If the version of Raspbian is not Lite (its means GUI Graphic-Desktop) the above is not necessary by default is Autologged.
We must have enable all interfaces by recommendation with sudo raspi-config in the option 'Interfaces' to enable GPIO remote, camera, I2C, 1-Wire, SPI, SSH, VNC, serial. If we the Desktop version in the task-bar in the symbol of left 'raspberry' in the submenu Accesories is the option 'Raspi-config'
Based in the next link (1): https://www.pyimagesearch.com/2017/09/04/raspbian-stretch-install-opencv-3-python-on-your-raspberry-pi/ and in the next link (2): http://raspberrypiprogramming.blogspot.com.co/2014/08/change-prompt-color-in-bash.html
The next is way to install OpenCV without virtual environment it is based in the link (2)
This is a generic sequence that apply in any case of Raspian Lite and not Lite, Jessie or Stretch, Raspberry Pi Zero, 2 or 3.
sudo apt-get update
sudo apt-get upgrade
sudo rpi-update
sudo reboot
sudo apt-get install build-essential cmake pkg-config
sudo apt-get install libjpeg-dev libtiff5-dev libjasper-dev libpng12-dev
sudo apt-get install libavcodec-dev libavformat-dev libswscale-dev libv4l-dev
sudo apt-get install libxvidcore-dev libx264-dev
sudo apt-get install libgtk2.0-dev libgtk-3-dev
sudo apt-get install libatlas-base-dev gfortran
cd ~
wget -O opencv.zip https://github.com/Itseez/opencv/archive/3.3.0.zip
unzip opencv.zip
wget -O opencv_contrib.zip https://github.com/Itseez/opencv_contrib/archive/3.3.0.zip
unzip opencv_contrib.zip
The version of OpenCV can be changed, in this case the stable version was OpenCV-3.2.0, We recommend work with the stable version in the moment.
See note of sudo pip install numpy
sudo apt-get install python2.7-dev
wget https://bootstrap.pypa.io/get-pip.py
sudo python get-pip.py
sudo pip install numpy
cd ~/opencv-3.3.0
mkdir build
cd build
cmake -D CMAKE_BUILD_TYPE=RELEASE \
-D CMAKE_INSTALL_PREFIX=/usr/local \
-D INSTALL_C_EXAMPLES=OFF \
-D INSTALL_PYTHON_EXAMPLES=ON \
-D OPENCV_EXTRA_MODULES_PATH=~/opencv_contrib-3.3.0/modules \
-D BUILD_EXAMPLES=ON ..
make -j4
sudo make install
sudo ldconfig
NOTE: Is recommendable to use sudo pip install numpy instead of pip install numpy. Because in the mode superuser we can access certain directories that we can write without constraints.
or
See note of sudo pip install numpy
sudo apt-get install python3-dev
wget https://bootstrap.pypa.io/get-pip.py
sudo python3 get-pip.py
sudo pip install numpy
cd ~/opencv-3.3.0
mkdir build
cd build
cmake -D CMAKE_BUILD_TYPE=RELEASE \
-D CMAKE_INSTALL_PREFIX=/usr/local \
-D INSTALL_C_EXAMPLES=OFF \
-D INSTALL_PYTHON_EXAMPLES=ON \
-D OPENCV_EXTRA_MODULES_PATH=~/opencv_contrib-3.3.0/modules \
-D BUILD_EXAMPLES=ON ..
make -j4
sudo make install
sudo ldconfig
NOTE: Is recommendable to use sudo pip install numpy instead of pip install numpy. Because in the mode superuser we can access certain directories that we can write without constraints.
In ocations we can have in the same environment two versions Python for example 2.7 and 3.5 in the pip may be installed in the version Python 3.5 and not in the Python 2.7. We can fall in the error by follow the Link(1) to use the next lines codes:
wget https://bootstrap.pypa.io/get-pip.py
sudo python get-pip.py
sudo python3 get-pip.py
Then pip is installed in the Python 3.5 with directory /usr/local/lib/python3.5/dist-packages and when you used
pip install [package]
any packages is installed in the Python 3.5 (for example pip install numpy is installed in Python 3.5 and not in Python 2.7). Sometimes the next common error to try install the pip in the Python 2.7 besides to have installed pip in Python 3.5 with the next command:
sudo apt-get install python-pip
Then the pip is installed in Python 2.7 but we have that to be careful when we use pip directly in command line in this situation. Because the package will follow installed in the pip of the version of Python 3.5.
For install some package with the pip of the Python 2.7 use the next command
sudo python -m pip install [package]
There arent problem if your objective is to install other package specificing the version of Python (2.7 or 3.x). But is a complicated situation if the case is to try install OpenCV for example. Because the rutines is designed by default (in the building) for using the pip that automaticly we use in Terminal or command (without to specific version Python) Finally OpenCV installs in Python 3.5 or one versioni of Python undesirable. We recommend in each environment use one unique version of Python in the possible, or create VIRTUAL ENVIRONMENT with an only version of Python like in the Link (1) is recommended. And if we have an environment with 2 Python version is important check what pip of Python version we using with the next command pip -V
Its necessary remove the pip of all version of Python for install the pip in the version Python desirable. The first is remove the version of pip installed that appears in the command line (Terminal). In any case if it was Python 2.7 or Python 3.5. Then suppose that was Python 3.5:
pip uninstall pip
After uninstall pip of the version Python 2.7 with:
sudo python -m pip uninstall pip
Last, uninstall the pip of the version Python 2.7 what prohibit to reinstall the pip in the Python version desirable.
sudo apt-get purge --auto-remove python-pip
This manner remove pip of all Python versions. Now we can begin install the pip in the desirable version Python. Suppose that the desirable version Python is 2.7
sudo apt-get install python2.7-dev
wget https://bootstrap.pypa.io/get-pip.py
sudo python get-pip.py
Now, if we use pip -V is installed in the correct location:
/usr/local/lib/python2.7/dist-packages (python2.7)
Now if the case is the reverse. Suppose what pip is the Python 2.7, then use:
pip uninstall pip
After use:
sudo python3 -m pip uninstall pip
By last
sudo apt-get purge --auto-remove python3-pip
Therefore we can install pip in the desirable version Python in this case the Python 3.5
sudo apt-get install python3-dev
wget https://bootstrap.pypa.io/get-pip.py
sudo python3 get-pip.py
After of the installation of OpenCV it is necessary install the next libraries.
The request library for sending of dates of NDVI to portal web through ThinkSpeak
sudo apt-get update
sudo apt-get install python-requests
Picamera and RPi.GPIO of the Raspberry Pi Zero, 2 or 3 that allows use this interfaces
sudo apt-get install python-picamera
sudo apt-get install python-rpi.gpio
First install the git in the Raspbian (Jessie, Stretch) with o without Graphic interface (Desktop)
sudo apt-get install git
Aftere choose the folder to recieve the files and folders with the command cd and when we ready use the next line code.
git clone https://github.com/phenosense-ciat/Module-image.git
The files unzip appear in a folder named Module-image. We can navigate inside of them. If is necessary we can copy and past the files in other folder of preference for example copy some files to /home/pi with the command cp
cd Module-image/NDVI-Raspberry/Station/
ls
sudo cp Module-image/NDVI-Raspberry/Station/runCamEventos.py /home/pi
sudo cp Module-image/NDVI-Raspberry/Station/cam.py /home/pi
sudo cp Module-image/NDVI-Raspberry/Station/ndviEstacionDemo.py /home/pi
sudo cp Module-image/NDVI-Raspberry/Station/conteo.txt /home/pi
sudo cp Module-image/NDVI-Raspberry/Station/speed.txt /home/pi
cd ~
ls
The command ls show the files in the current folder and cd ~ return to default folder that always is /home/pi
When we want edit, create files Python scripts, text files, shell scripts in this SO. We have to use sudo nano. For example
sudo nano conteo.txt
or
sudo nano runCamEventos.py
In any case if the file nonexist Raspbian create an empty file. But if the file exist Raspbian will allow to do modification on it.
- https://www.youtube.com/watch?v=bInyVQhMp30 (Raspberry PI Automatic Login - Raspbian Jessie)
- https://ubuntuforums.org/showthread.php?t=2296100 (Unable to uninstall "pip" in Ubuntu 15.04)
- https://stackoverflow.com/questions/30017136/bash-pip-command-not-found-for-an-install(Bash: pip: command not found for an Install)
- https://www.youtube.com/watch?v=7zQqfNVxfj4(How to install/uninstall pip in Linux (Debian, Ubuntu, etc))
- https://stackoverflow.com/questions/34803040/how-to-run-pip-of-different-version-of-python-using-python-command(How to run pip of different version of python using python command?)
- https://stackoverflow.com/questions/11268501/how-to-use-pip-with-python-3-x-alongside-python-2-x (How to use pip with Python 3.x alongside Python 2.x )
- https://www.raspberrypi.org/forums/viewtopic.php?f=91&t=79312 ( Trying to use the requests library)
- https://www.raspberrypi.org/documentation/usage/camera/python/README.md (Picamera Installation)
- https://picamera.readthedocs.io/en/release-1.13/install.html (Picamera Installation)
- https://raspberrypi.stackexchange.com/questions/8658/can-i-install-git-on-raspbian (Can I install Git on Raspbian?)
- https://askubuntu.com/questions/400152/how-to-copy-and-paste-a-file (how to copy and paste a file)
- http://www.circuitbasics.com/how-to-write-and-run-a-python-program-on-the-raspberry-pi/ (HOW TO WRITE AND RUN A PYTHON PROGRAM ON THE RASPBERRY PI)
- https://superuser.com/questions/373026/how-to-input-hash-symbol-to-terminal (How to input hash (#) symbol to terminal?)