Computer Vision News - March 2022

17 Computer Vision: Algorithms and Applications book sales. Fortunately, Springer said, “ Sure, we can do that! ” I was working with the same great editor, Wayne Wheeler at Springer, on the second edition and it was just a given that we would do it again. You’ve had 16,000 downloads already this year! I never got around to putting a counter up for the first edition, but so many students came up to me at computer vision conferences and said, “ Professor Szeliski, the reason I’m here is I read your book, and I got excited about computer vision! ” That was a wonderful feeling. When the second edition came out, I put the counter up, and it skyrocketed. There are more downloads now than people who attended CVPR! You acknowledge the help of around 100 people in the book. What part did they all play? I’ve posted drafts chapter by chapter for both editions and asked people to send me comments. I worked on the second edition for three years and had hundreds of comments, suggestions, and corrections. All those people listed in the book helped me. I even reached out to a few students to teach me some of the finer points of deep learning. everything is done all at once in a deep neural network. Whatmade youdecide topublish a second edition? Deep learning has taken over as the preferred technique, and it wasn’t mentioned at all in my book because, in 2010, it still hadn’t proven its utility. Also, many techniques are so much better now, like structure frommotion and recognition. I wanted to update the book to reflect that. I’ve always tried to track what people are teaching. I’ve listed classes that teach a curriculum similar to what I cover in the book on my website . Do you expect in another 15 years you will need to write a third edition? That’s possible! We’ll see what the next revolution is. There are some new techniques like transformers that seem to bedoingwell. It’s averydynamic field, so I’m sure therewill be a need for new textbooks. Of course, even as I was finishing up this book, there were lots of recent papers that were very relevant and students should be reading, but I had to stop at some point. Although it’s fascinating work, I wanted to get on and do other things! A free PDF edition of the book is available on your website. How did that come about? My primary motivation has always been to share information. There was a particular wayofteachingthematerialthatIdeveloped with Steve Seitz, and we were both very excited about it. Universities like Carnegie Mellon would take our class notes and slide sets and build their classes around them. I wanted it to be as widely used as possible. I had to negotiate with publishers about the free copy, and most were worried about