In this recipe, we show how to let the notebook and the Python kernel communicate in both directions.
Specifically, we will retrieve the webcam feed from the browser using HTML5's
<video> element, and pass it to Python in real time using the interactive capabilities of the IPython notebook 2.0+. Then, we will process the image in Python with an edge detector (implemented in scikit-image), and display it in the notebook in real time.
Most of the code for this recipe comes from Jason Grout's example, available at https://github.com/jasongrout/ipywidgets.
You need Pillow and scikit-image for this recipe. (For more information, refer to Chapter 11, Image and Audio Processing.)
You also ...