Computer Graphics MCQs with answers Page - 8

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Admin • 831.35K Points
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Q. Which polygon fill algorithm needs following information - 1. Region Color (RC), 2. Fill Color (FC) and 3. (x,y) coordinates of seed point.

  • (A) flood fill
  • (B) region fill
  • (C) scan fill
  • (D) dda fill

A

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Q. Horizontal lines are not considered in scan line fill algorithm.

  • (A) true
  • (B) false
  • (C) ---
  • (D) ---

A

Admin • 831.35K Points
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Q. Scan line fill algorithm is more efficient than flood fill algorithm.

  • (A) true
  • (B) false
  • (C) ---
  • (D) ---

A

Admin • 831.35K Points
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Q. Which statement is true about the 4 connected region.

  • (A) it is faster than 8 connected region
  • (B) sometimes it leaves region unfilled.
  • (C) both a and b
  • (D) neither a or b

A

Admin • 831.35K Points
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Q. The function of scan line polygon fill algorithm are :

  • (A) find intersection point of the boundary of polygon and scan line
  • (B) find intersection point of the boundary of polygon and point
  • (C) both a and b
  • (D) neither a or b

A

Admin • 831.35K Points
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Q. The edge table contains pointers back to the ______________ to identify vertices for each polygon edge.

  • (A) vertex table.
  • (B) polygon table.
  • (C) edge table.
  • (D) expanded vertex table.

A

Admin • 831.35K Points
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Q. Scan line polygon filling method uses

  • (A) scan-line coherence
  • (B) edge coherence
  • (C) area coherence
  • (D) both a and b

A

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Q. Scan-line coherence property is used in

  • (A) line drawing algorithm
  • (B) scan line polygon filling algorithm
  • (C) flood fill polygon filling algorithm
  • (D) none of above

A

Admin • 831.35K Points
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Q. Which of the following is true about scan line algorithm?

  • (A) it need a seed pixel
  • (B) it works at pixel level
  • (C) it uses scan lines to fill the polygon
  • (D) all of above

A

Admin • 831.35K Points
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Q. In scan line algorithm the intersection points are

  • (A) sorted in ascending order
  • (B) sorted in descending order
  • (C) not sorted
  • (D) deleted

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