The VideoToolbox software for visual psychophysics: transforming numbers into movies.
The VideoToolbox is a free collection of two hundred C subroutines for Macintosh computers that calibrates and controls the computer-display interface to create accurately specified visual stimuli. High-level platform-independent languages like MATLAB are best for creating the numbers that describe the desired images. Low-level, computer-specific VideoToolbox routines control the hardware that transforms those numbers into a movie. Transcending the particular computer and language, we discuss the nature of the computer-display interface, and how to calibrate and control it.
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Department of Psychology, New York University, NY 10003, USA. denis@psych.nyu.edu
D002138:Calibration; D016288:Computer Terminals; D003626:Data Display; D006801:Humans; D008838:Microcomputers; D009039:Motion Perception; D010364:Pattern Recognition, Visual; D011601:Psychophysics; D012984:Software; D012985:Software Design; D014584:User-Computer Interface