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The VideoToolbox software for visual psychophysics: transforming numbers into movies.

Spatial vision

User-Computer Interface, Software Design, Software, Psychophysics, Pattern Recognition, Visual, Motion Perception, Microcomputers, Humans, Data Display, Computer Terminals, Calibration

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      Abstract

      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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      9176953

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