Critical temporal windows for natural point-light gender discrimination

Critical temporal windows for natural point-light gender discrimination

There is a growing body of literature investigating point-light biological motion perception. Based solely on the kinematics of a handful of dots representing the body and major joints of a human actor, observers can extract complex information such as gender from point-light displays. Many previous studies have used artificially generated point-light animations to investigate critical features...

Adaptive Windows for Texture Discrimination

The appl icat ion of image processing operators known as adaptive windows to the task of complex texture discrimination is reported. Comparisons are made with the ability of the pre-attentive human visual system for the same tasks. A modification to the standard adaptive window is presented which has several advantages for this type of image processing task. The performance of the adaptive wind...

Limits of peripheral direction discrimination of point-light walkers.

Many previous studies have used noise tolerance to quantify sensitivity to point-light walkers heading +/-90 degrees from straight-ahead. Here we measured the smallest deviations from straight-ahead that observers could detect (azimuth thresholds) in the absence of noise. Thresholds were measured at a range of stimulus sizes and eccentricities for (1) upright and (2) inverted walkers, (3) intac...

Windows into Geometric Events: Data Structures for Time-Windowed Querying of Temporal Point Sets

We study geometric data structures for sets of point-based temporal events, answering time-windowed queries, i.e., given a contiguous time interval we answer common geometric queries about the point events with time stamps in this interval. The geometric queries we consider include queries based on the skyline, convex hull, and proximity relations of the point set. We provide space efficient da...

Critical windows for nutritional interventions against stunting.