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The PyramidSnapshot Challenge: Understanding Student Process from Visual Output of Programs

In the ideal CS1 classroom, we should understand programming process---how student code evolves over time. However, for graphics-based programming assignments, the task of understanding and grading final solutions, let alone thousands of intermediate steps, is incredibly labor-intensive. In this work, we present a challenge, a dataset, and a promising first solution to autonomously use image output to identify functional, intermediate stages of a student solution. By using computer vision techniques to associate visual output of intermediate student code with functional progress, we supplement a lot of the teacher labor associated with understanding graphics-based, open-ended assignments. We hope our publication of the dataset used in our case study sparks discussion in the community on how to analyze programs with visual program output.