Bài giảng Nhập môn thị giác máy tính - Chapter 3: Camera calibration - Lê Thanh Hải
Chapter 3 – Camera Calibration
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Chapter 3
Camera Calibration
Prof. Fei-Fei Li, Stanford Univers ity
Department of Mechatronics
Chapter 3 – Camera Calibration
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Contents
• Review camera parameters
• Affine camera model
• Camera calibration
• Vanishing points and lines
Department of Mechatronics
Chapter 3 – Camera Calibration
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Projective camera
Department of Mechatronics
Chapter 3 – Camera Calibration
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Projective camera
K has 5 degrees of freedom
Department of Mechatronics
Chapter 3 – Camera Calibration
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Projective camera
Department of Mechatronics
Chapter 3 – Camera Calibration
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Projective camera
D
Chapter 3 – Camera Calibration
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Projective camera
Chapter 3 – Camera Calibration
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Projective camera
Department of Mechatronics
Chapter 3 – Camera Calibration
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Projective camera
fk 0 u
0
u
K 0 fkv v0
Department of Mechatronics
0 0 0
Chapter 3 – Camera Calibration
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Goal of calibration
Department of Mechatronics
Department of Mechatronics
Chapter 3 – Camera Calibration
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Hierarchy of cameras
Department of Mechatronics
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Examples of camera projections
Department of Mechatronics
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Affine cameras
De
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Homogenous coordinate
• Our usual coordinate system is called a Euclidean
or affine coordinate system.
• Rotation, translation and projection in homogenous
coordinate can be expressed linearly as matric
multiplies.
Department of Mechatronics
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Chapter 3 – Camera Calibration
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• Projective geometry provides an elegant means for
handling these different situations in a unified way and
homogenous coordinates are a way to represent entities
(points and lines) in projective spaces.
Department of Mechatronics
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