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display.slides.printing - Some Important Properties of...

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Some Important Properties of Human Vision Some Important Properties of Human Vision CS 450: Introduction to Digital Signal and Image Processing Bryan Morse BYU Computer Science
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Some Important Properties of Human Vision Introduction Human Vision Some properties of human vision that affect image perception: Linear and non-linear parts Nonlinear (approx. logarithmic) encoding of input Adaptation Relative-contrast encoding Varying sensitivity to spatial frequecies Generally treats brightness and color separately
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Some Important Properties of Human Vision Psychophysics How Do We Know? Two main ways to measure perception: Physiological Measure neurological responses (the neurons tell us what they see) Psychophysical Noninvasive perceptual experiments (the person tells us what they see)
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Some Important Properties of Human Vision Psychophysics Psychophysics: Discrimination Experiments Many vision experiments involve comparisons “Two alternative, forced choice” experiments: is it there? (yes/no) which is brighter, farther apart, etc.
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