Pi3b 安裝 OpenCV3
										
### 強烈建議安裝Miniconda
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Install Miniconda3
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wget http://repo.continuum.io/miniconda/Miniconda3-latest-Linux-armv7l.sh
sudo md5sum Miniconda3-latest-Linux-armv7l.sh # (optional) check md5
sudo /bin/bash Miniconda3-latest-Linux-armv7l.sh # -> change default directory to /home/pi/miniconda3
sudo nano /home/pi/.bashrc # -> add: export PATH="/home/pi/miniconda3/bin:$PATH"
sudo reboot -h now

update miss permission of the directory:
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sudo chown -R pi miniconda3

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Test測試你的環境
conda
python --version

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安裝python 3.6 
conda config --add channels rpi
conda install python=3.6
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安裝opencv3
pip3 install opencv-python
conda install -y -c conda-forge opencv
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到此完成




以下選用
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安裝Spyder
pip3 install spyder

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CONDA環境下安裝
安裝anaconda client

pip3 install opencv-python
conda install -y -c conda-forge opencv
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update 更新套件
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conda update conda
conda update --all

pip install --upgrade pip

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安裝anaconda client
conda install anaconda-client
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#### 以下是沒有安裝 conda 時的做法 ####
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Pi3B 安裝OpenCV3 
Step #1
#修正CMAKE找不到問題&安裝cmake
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sudo apt-get update -y
sudo apt-get update
sudo apt-get install cmake

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Step #2 安裝OpenCV
https://dotblogs.com.tw/coding4fun/2017/11/09/110723

指令
sudo apt-get update && sudo apt-get upgrade
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 libcanberra-gtk*
sudo apt-get install libatlas-base-dev gfortran
sudo apt-get install python2.7-dev python3-dev


Step #3 下載與安裝Opencv
wget -O opencv.zip https://github.com/Itseez/opencv/archive/3.3.1.zip
unzip opencv.zip
wget -O opencv_contrib.zip https://github.com/Itseez/opencv_contrib/archive/3.3.1.zip
unzip opencv_contrib.zip


Step #4 建立Python虛擬環境
wget https://bootstrap.pypa.io/get-pip.py
sudo python get-pip.py
sudo python3 get-pip.py
sudo pip install virtualenv virtualenvwrapper
sudo rm -rf ~/.cache/pip

Step #4修改設定檔
nano ~/.profile

#底下加入
# virtualenv and virtualenvwrapper
export WORKON_HOME=$HOME/.virtualenvs
source /usr/local/bin/virtualenvwrapper.sh

#重新載入設定檔
source ~/.profile

#安裝NumPy套件
pip install numpy


Step #5 編譯及安裝OpenCV
$ cd ~/opencv-3.1.0/
$ mkdir build
$ cd build
$ cmake -D CMAKE_BUILD_TYPE=RELEASE \
    -D CMAKE_INSTALL_PREFIX=/usr/local \
    -D INSTALL_PYTHON_EXAMPLES=ON \
    -D OPENCV_EXTRA_MODULES_PATH=~/opencv_contrib-3.1.0/modules \
    -D BUILD_EXAMPLES=ON ..
	

P3b 安裝Cmake
# http://osdevlab.blogspot.tw/2015/12/how-to-install-latest-cmake-for.html