Download PTU MCA 2020 March 4th Sem 74121 Interactive Computer Graphics Question Paper

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Roll No. | Total No. of Pages : 02
Total No. of Questions : 09

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MCA (2015 & Onward) (Sem.-4)
INTERACTIVE COMPUTER GRAPHICS
Subject Code : MCA-403
M.Code : 74121
Time : 3 Hrs. Max. Marks : 60

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INSTRUCTIONS TO CANDIDATES :

1. SECTIONS-A, B, C & D contains TWO questions each carrying TEN marks each and students have to attempt any ONE question from each SECTION.
2. SECTION-E is COMPULSORY consisting of TEN questions carrying TWENTY marks in all.

SECTION-A

1. How Color CRT Monitors are different from Liquids Crystal Display (LCD) Systems? Explain their working also.

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2. a) What do you mean by raster scan and random scan display?
   b) Why we need color images? Explain RGB and CMY color models.

SECTION-B

1. Write down and explain the midpoint circle drawing and Ellipse drawing algorithm with the help of suitable example.
2. What do you mean by Polygon clipping? Explain Sutherland-Hodgeman Polygon Clipping with an example.

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SECTION-C

1. What do you mean by Reflection, Scaling and Shearing? Explain in Three Dimension using Homogenous Coordinate system.
2. Derive the blending function for a Bezier Surface 3 x 3.

SECTION-D

1. Write and explain the depth-buffer algorithm which is used to detect visible surfaces.

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2. Explain in detail gouraud and Phong method for shading.

SECTION-E

1. Answer briefly :
   1. Define spatial resolution.
   2. Define random scan.
   3. Explain difference between parallel and perspective projections.

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   4. What do you mean by pseudo-color image?
   5. Discuss shadow masking.
   6. What is anti aliasing?
   7. Discuss shearing.
   8. Define quadric surface.

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   9. What do you mean by half toning?
   10. What are vanishing points?

NOTE : Disclosure of Identity by writing Mobile No. or Making of passing request on any page of Answer Sheet will lead to UMC against the Student.

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