NPTEL Computer Vision Week 3 Assignment Answers 2024
a) (−2/3, 0, 1/3, 1)
b) (2/3, 0, −1/3, 1)
c) (0.5, 0, −0.5, 1)
d) (0.5, 0, 0.5, 1)
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2. If the principal point is located at (3, 4) in the coordinate system of the image plane, what would be the image coordinates of the world point (1, 2, 5), using a pin hole camera with focal length f = 0.5?
a) (2.3, 4.4)
b) (3.3, 3.4)
c) (3.3, 4.2)
d) (2.3, 3.4)
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7. Note: Perspective projective mapping is imaging the 3D world coordinates to an image plane using a projective camera where all the rays pass through a camera center. Consider the camera center is at (0, 0, 0) and the image plane is parallel to XY plane and at a distance of f from it.
The Perspective projective mapping from world coordinates (1, 4, 5) to image coordinates, using a camera with focal length f = 0.25, is
a) (1/6, 1/3)
b) (1/20, 1/5)
c) (1/3, 1/6)
d) (1/6, 1/2)
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