TAILIEUCHUNG - CS 450: Human Vision

CS 450: Human Vision includes about Discrimination Experiments, Weber’s Law, Weber’s Law and Logarithmic Encoding, Adaptation, Contrast Encoding, Spatial Frequencies, Color Perception, Brightness vs. Color. | CS 450 Human Vision 1 Human Vision I 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 CS 450 Human Vision 2 Discrimination Experiments Many vision experiments involve comparisons. Two alternative forced choice experiments is it there yes no which is brighter farther apart etc. top bottom left right etc. Random guessing without bias 50 correct Pick some percentage above which the the observer must get it right often 75 half the time they see it half the time they guess . Vary the experimental parameter to determine the threshold T above which the observer reaches this desired level of confidence. This is called the just noticable difference . . Sensitivity 1 T CS 450 Human Vision 3 Weber s Law Many visual properties obey Weber s law. For intensity discrimination AI I c for some constant c. In other words the . AI for intensity is proportional to the intensity itself. Also applies to distance judgements spatial frequency discrimination and many .

• Đồ họa - Thiết kế - Flash
• CS 450 Human Vision
• Discrimination Experiments
• Weber’s Law
• Logarithmic Encoding
• Contrast Encoding
• Color Perception
• Image Processing
• Human Visual Perception
• Digital Camera
• Color Imagery
• Three Dimensional Imaging
• Image Transformation
• Discrete Wavelet Transform
• báo cáo hóa học
• công trình nghiên cứu về hóa học
• tài liệu về hóa học
• cách trình bày báo cáo
• Lecture Human Computer interaction
• Bài giảng Tương tác Người Máy tính
• Human Computer interaction
• Human Input Output channels
• Color sensitivity
• Human auditory perception