Term 2: In-Depth on Udacity’s Self-Driving Car Curriculum
The very first class of students has finished Term 1 of the Udacity Self-Driving Car Engineer Nanodegree Program! We are so excited by their accomplishments—they have built traffic sign classifiers, end-to-end neural networks for driving, lane-finding algorithms, and vehicle tracking pipelines.
Now it’s time for Term 2 — hardcore robotics.
The focus of Term 1 was applying machine learning to automotive tasks: deep learning, convolutional neural networks, support vector machines, and computer vision.
In Term 2, students will build the core robotic functions of an autonomous vehicle system: sensor fusion, localization, and control. This is the muscle of a self-driving car!
Our terms are broken out into modules, which are in turn comprised of a series of focused lessons. This Sensor Fusion module is built with our partners at Mercedes-Benz. The team at Mercedes-Benz is amazing. They are world-class automotive engineers applying autonomous vehicle techniques to some of the finest vehicles in the world. They are also Udacity hiring partners, which means the curriculum we’re developing together is expressly designed to nurture and advance the kind of talent they would like to hire!
Below please find descriptions of each of the lessons that together comprise our Sensor Fusion module:
The first lesson of the Sensor Fusion Module covers the physics of two of the most import sensors on an autonomous vehicle — radar and lidar.
- Kalman Filters
Kalman filters are the key mathematical tool for fusing together data. Implement these filters in Python to combine measurements from a single sensor over time.
- C++ Primer
Review the key C++ concepts for implementing the Term 2 projects.
- Project: Extended Kalman Filters in C++
Extended Kalman filters are used by autonomous vehicle engineers to combine measurements from multiple sensors into a non-linear model. Building an EKF is an impressive skill to show an employer.
- Unscented Kalman Filter
The Unscented Kalman filter is a mathematically-sophisticated approach for combining sensor data. The UKF performs better than the EKF in many situations. This is the type of project sensor fusion engineers have to build for real self-driving cars.
- Project: Pedestrian Tracking
Fuse noisy lidar and radar data together to track a pedestrian.
This module is also built with our partners at Mercedes-Benz, who employ cutting-edge localization techniques in their own autonomous vehicles. Together we show students how to implement and use foundational algorithms that every localization engineer needs to know.
Here are the lessons in our Localization module:
Study how motion and probability affect your belief about where you are in the world.
- Markov Localization
Use a Bayesian filter to localize the vehicle in a simplified environment.
Learn basic models for vehicle movements, including the bicycle model. Estimate the position of the car over time given different sensor data.
- Particle Filter
Use a probabilistic sampling technique known as a particle filter to localize the vehicle in a complex environment.
- High-Performance Particle Filter
Implement a particle filter in C++.
- Project: Kidnapped Vehicle
Implement a particle filter to take real-world data and localize a lost vehicle.
This module is built with our partners at Uber Advanced Technologies Group. Uber is one of the fastest-moving companies in the autonomous vehicle space. They are already testing their self-driving cars in multiple locations in the US, and they’re excited to introduce students to the core control algorithms that autonomous vehicles use. Uber ATG is also a Udacity hiring partner, so pay attention to their lessons if you want to work there!
Here are the lessons:
Learn how control systems actuate a vehicle to move it on a path.
- PID Control
Implement the classic closed-loop controller — a proportional-integral-derivative control system.
- Linear Quadratic Regulator
Implement a more sophisticated control algorithm for stabilizing the vehicle in a noisy environment.
- Project: Lane-Keeping
Implement a controller to keep a simulated vehicle in its lane. For an extra challenge, use computer vision techniques to identify the lane lines and estimate the cross-track error.
I hope this gives you a good sense of what students can expect from Term 2! Things may change along the way of course, as we absorb feedback, incorporate new content, and take advantage of new opportunities that arise, but we’re really excited about the curriculum we’ve developed with our partners, and we can’t wait to see what our students build!
In case you’d like a refresher on what was covered in Term 1, you can read my Term 1 curriculum post here.
In closing, if you haven’t yet applied to join the Udacity Self-Driving Car Engineer Nanodegree Program, please do! We are taking applications for the 2017 terms and would love to have you in the class!