Metrology 1.Perspective distortion. 2.Depth is lost.
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Transcript of Metrology 1.Perspective distortion. 2.Depth is lost.
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Metrology
1. Perspective distortion.2. Depth is lost.
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Measure with Reference
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Geometric Cues - Projections
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Points: 2D Coordinates
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Lines: 2D Coordinates
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Homogeneous Coordinates
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Join = Cross Product.
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Vanishing Points and Lines
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Joining Parallel Lines?
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Determinants (Method 1)
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Multiple Lines
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Homogenous Equations (Method 2)
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Solving Homogenous Equations
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2D Transforms
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Homography Homography is a concept in the
mathematical science of geometry. A homography is an invertible transformation from the real projective plane to the projective plane that maps straight lines to straight lines.
Synonym: Projective transformation
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Rectification
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Homography Matrix
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Homography Estimation
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Homography Estimation
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Homography Estimation
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Homography Estimation: Minimum Requirement
8 Unknowns
4 Correspondences Sufficient to Solve.
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Applications of Homography In the field of computer vision, any two
images of the same planar surface in space are related by a homography (assuming a pinhole camera model).
This has many practical applications, such as image rectification, image registration, or computation of camera motion (rotation and translation) between two images.
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Feature Matching
or
Example Feature Detection Methods:
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Feature Matching