The lower bound of human sketching ability

Speaking of adding more pictures to this blog, here are a couple of choice figures from a computer graphics paper I read recently [1] that had me giggling out loud at my computer screen at 2am. In it the authors describe a system for classifying sketches into groups automatically – but to do this you need to first have some sketches, made by humans, to classify. It turns out humans are not always the best at sketching [2]…



My favorites are the GIRAFFE, FROG, DUCK, DOLPHIN, MERMAID and KANGAROO. Somehow the labelling of the categories in all-caps just makes the whole situation more comically tragic.

[1] Rosália G. Schneider and Tinne Tuytelaars. 2014. Sketch classification and classification-driven analysis using Fisher vectors. ACM Trans. Graph. 33, 6, Article 174 (November 2014), 9 pages. DOI=10.1145/2661229.2661231

[2] The authors actually go on to analyze the problems with human sketches that lead to a “failure” of sketch classification systems – it’s a pretty neat paper, check it out.


Author: krysjez

I'm a student of computer/cognitive science, artist and geek. Nice to meet you! Follow my adventures at

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