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GEOMETRIC CAMERA MODELS

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Presentation on theme: "GEOMETRIC CAMERA MODELS"— Presentation transcript:

1 GEOMETRIC CAMERA MODELS
Elements of Euclidean Geometry The Intrinsic Parameters of a Camera The Extrinsic Parameters of a Camera The General Form of the Perspective Projection Equation Reading: Chapter 2.

2 Quantitative Measurements and Calibration
Euclidean Geometry

3 Euclidean Coordinate Systems

4 Planes

5 OBP = OBOA + OAP , BP = AP + BOA
Coordinate Changes: Pure Translations OBP = OBOA + OAP , BP = AP + BOA

6 Coordinate Changes: Pure Rotations

7 Coordinate Changes: Rotations about the z Axis

8 A rotation matrix is characterized by the following properties:
Its inverse is equal to its transpose, and its determinant is equal to 1. Or equivalently: Its rows (or columns) form a right-handed orthonormal coordinate system.

9 Coordinate Changes: Pure Rotations

10 Coordinate Changes: Rigid Transformations

11 Rigid Transformations as Mappings

12

13 The Intrinsic Parameters of a Camera
Units: k,l : pixel/m f : m a,b : pixel Physical Image Coordinates Normalized Image Coordinates

14 The Intrinsic Parameters of a Camera
Calibration Matrix The Perspective Projection Equation

15 Extrinsic Parameters


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