I’ve started working with Python (2.7 and 3.x) and OpenCV 3 recently, and the IPython Notebook way of working with inline plots is awesome. But the debugging, editing and some other features are not great when compared to working in a Visual Studio environment.
So now I’m trying Visual Studio 2013 as the IDE, OpenCV 3, and Python 2.7 via the numerical and scientific WinPython stack.
I extracted OpenCV and WinPython to:
- My Documents\OpenCV
- My Documents\WinPython-32bit-22.214.171.124
From VS2013 I then installed Python Tools for Visual Studio (PTVS).. I did this within VS2013 using the Extensions and Tools dialog.
Finally I configured a new Python Environment:
From an Interactive Window I can then check everything works as expected. First, Open CV3:
Python interactive window. Type $help for a list of commands. import cv2 cv2.__version__ '3.0.0'
Next up, NumPy and a MatPlotLib chart:
import numpy as np import matplotlib.pyplot as plt x = np.linspace(0, np.pi * 2, 100) y = np.sin(x) plt.plot(x, y) plt.xlabel('Radians') plt.ylabel('sin(x)') plt.show()
This gives us a popup (model) window:
Now to make it a bit more interesting – inline plots.. ! The Python Interactive Window has options for the Interactive mode:
The default Interactive Mode is Standard but we can change this to IPython:
After restarting VS2013 we can now go inline…
And lastly an OpenCV 3 test:
In : import cv2 In : img = cv2.imread(r"C:\Users\jon\Pictures\Samples\eye.jpg", 0) In : plt.imshow(img, cmap='gray') Out: <matplotlib.image.AxesImage at 0x5b8e510>
In : blur = cv2.medianBlur(img, 91) In : plt.imshow(blur, cmap='hot') Out: <matplotlib.image.AxesImage at 0x1edea7d0>
The great thing is I can now move this code into a Python project, get it into git, distribute among colleagues, and use the excellent intellisense and debugging powers of PTVS ! (Obviously not this actual code !)