Table 1:

ROFL categories used in this paper. ground truth factors include fixation point (+2); velocity of the observer when self-motion is present (+3); and, object position & velocity (+6). Figure 1b showcases a few example frames for each category. The stimuli can be rendered at any given spatial scale N, yielding an input shape of 2 × N × N. Here we work with N = 17.

Category	Description	Dimensionality
fixate-1	A moving observer maintains fixation on a background point. In addition, the scene contains one independently moving object.	11 = 2 + 3 + 6
fixate-0	Same as fixate-1 but without the object.	5 = 2 + 3
obj-1	A single moving object, stationary observer.	8 = 2 + 6