What is the fine-grained topic of the following text: The 2-volume set LNCS 9768 and 9769 constitutes the refereed complaints of the Third foreign convention on Augmented Reality, digital fact and special effects, AVR 2016, held in Lecce, Italy, in June 2016. Only return the topic.
The Third International Conference on Augmented Reality, Virtual Reality and Computer Graphics (AVR 2016) in Lecce, Italy.