1. Kashif Murtaza Lectures 15, 16 and 17
CS 565 Computer Vision
Kashif Murtaza
Lectures 15, 16 and 17

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16. Inverse Transforms
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17. What is Inverse of Rotation? What is inverse of Translation?
Inverse Transforms
What is Inverse of Rotation?
What is inverse of Translation?
What is inverse of Shear in X-direction?
What is inverse of Shear in Y-direciton?
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41. 2-D Projective Transform
Also Called 2-D Homography
Dof?
Invariants? Lines map to lines!
Linear Transform?

42. Estimation of Homography: DLT
Direct Linear Transform (4.1 MVG Hartly & Zisserman)

43. Estimation of Homography: DLT
Direct Linear Transform (4.1 MVG Hartly & Zisserman)

44. Estimation of Homography: DLT
Direct Linear Transform (4.1 MVG Hartly & Zisserman)

45. Estimation of Homography: DLT
Direct Linear Transform (4.1 MVG Hartly & Zisserman)

46. Estimation of Homography: DLT
Direct Linear Transform (4.1 MVG Hartly & Zisserman)

47. Estimation of Homography: DLT
Direct Linear Transform (4.1 MVG Hartly & Zisserman)
How many correspondences?
A is rank deficient!
Null Space of A
Invertibilty of H?
Over determined system in the existence of noisy markings?

48. Projective Warping