This stippled version of Alan Turing was created with 500 dots. Because drawing many dots takes a long time with our flying robot, we primarily make images of faces given that faces are easy for humans to recognize.
Stippling with aerial robots project page for the publication at Computational Aesthetics / Expressive.
This video produced by the McGill University newsroom provides a high level overview of the project.
The supplementary video for the conference publication, showing time lapse videos of various portraits being created. The video starts with a view from above of the Turing print being created, with both real-time footage as well as a time lapse.