Update README.md

Author: lchevallier-teledyne

README.md

@@ -34,11 +34,27 @@ GPIO_example.py brings an example of control of the pins of the nano jetson allo
 
 
 # Image Capture
+## Install pip2 for python2 package installation
+``` 
+sudo apt update
+sudo apt install python-pip
+```
+## Install v4l2 package for python 2.7.17 (preinstalled in the Jetson image)
+
+```
+pip2 install v4l2
+```
+
+## Run script
+```
+python image_capture_example.py
+```
+
 
 image_capture_example.py provides an example of taking a sequence of images by changing some sensor parameters between each image. In this file you can also find functions to drive the sensor which are different from the api (less complex, address of the controls defined in static).
 The program will take a sequence of RAW images and customize the controls applied to each image as you wish.
 It is also possible to change the format to take picture in Y10 or GRAY8. Y10 images will be saved in 16bit GRAY raw image.
 
 # Video display with matplolib
 
-video_flux_and_capture_numpy_matplotlib.py provides an example of streaming the video flux using matplotlib, you can also see in the code how to put the images in a numpy array. This codes provides really bad streaming performances with a maxmum of 5/10 fps this is due to the usage of matplotlib, it hasn't been develop for video streaming, we are using it only to show how to use the driver with numpy.
+video_flux_and_capture_numpy_matplotlib.py provides an example of streaming the video flux using matplotlib, you can also see in the code how to put the images in a numpy array. This codes provides really bad streaming performances with a maxmum of 5/10 fps this is due to the usage of matplotlib, it hasn't been develop for video streaming, we are using it only to show how to use the driver with numpy.