In the previous chapter, you got your hands on deep convolutional neural networks and built deep classification and localization networks using transfer learning. You have started your deep learning journey and have familiarized yourself with a range of deep learning concepts. You now understand how deep models are trained and you are ready to learn about more advanced deep learning concepts.

In this chapter, you will continue your deep learning journey, first using object detection models to detect multiple objects of different types in a video of a relevant scene such as a street view with cars and people. After that, you will learn how such models are built and trained.

In general, robust object detection models have a wide range of applications nowadays. Those areas include but are not limited to medicine, robotics, surveillance, and many...