Computer Graphics Questions & Answers – Matrix Representations and Homogeneous Coordinates

1.The matrix representation for translation in homogeneous coordinates is
a) P’=T+P
b) P’=S*P
c) P’=R*P
d) P’=T*P
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2. The matrix representation for scaling in homogeneous coordinates is
a) P’=S*P
b) P’=R*P
c) P’=dx+dy
d) P’=S*S
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3. The matrix representation for rotation in homogeneous coordinates is
a) P’=T+P
b) P’=S*P
c) P’=R*P
d) P’=dx+dy
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4. What is the use of homogeneous coordinates and matrix representation?
a) To treat all 3 transformations in a consistent way
b) To scale
c) To rotate
d) To shear the object
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5. If point are expressed in homogeneous coordinates then the pair of (x, y) is represented as
a) (x’, y’, z’)
b) (x, y, z)
c) (x’, y’, w’)
d) (x’, y’, w)
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6. For 2D transformation the value of third coordinate i.e. w=?
a) 1
b) 0
c) -1
d) Any value
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7. We can combine the multiplicative and translational terms for 2D into a single matrix representation by expanding
a) 2 by 2 matrix into 4*4 matrix
b) 2 by 2 matrix into 3*3
c) 3 by 3 matrix into 2 by 2
d) Only c
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8. The general homogeneous coordinate representation can also be written as
a) (h.x, h.y, h.z)
b) (h.x, h.y, h)
c) (x, y, h.z)
d) (x,y,z)
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Sanfoundry Global Education & Learning Series – Computer Graphics.

To practice all areas of Computer Graphics, here is complete set of 1000+ Multiple Choice Questions and Answers.

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