Which of the following best defines Scan Conversion in computer graphics?
It is a process of representing graphics objects as a collection of pixels
It is a process of converting colored images to grayscale images.
It is a process of converting handmade drawing to computer pictures through a scanner
None of the above
Correct Answer :
A. It is a process of representing graphics objects as a collection of pixels
All the other definitions are wrong as per defining the Scan Conversion in computer graphics.
Related Questions
The distances between two points (dx, dy) are referred to as translation distances (dx, dy).
Translation vector or Shift vector
Translation difference
Only B
None of these
With reference to Random Scan Display, which of the following options is correct?
It has an electron beam that directed only to the screen areas where any picture has to be displayed.
It has a good pixel amount.
It's ideal for line drawing.
All of the above mentioned.
What value of the rotation angle rotates the object in clockwise direction?
Positive Value
Negative value
Value less than 180 degree
All of the above
What are the fundamental characteristics of a straight line?
Width
Color
Type
All of the mentioned above
Why is the complexity of Bresenham's line drawing algorithm less than that of DDA line drawing algorithm?
It uses floating point operations over integer addition and subtraction
It considers only selected ranged inputs
It uses integer addition and subtraction over floating point operations
None of the above
In a graphics system, the most prominent output device is,
VDU (Visual Display Unit)
Printer
Joystick
None of the above mentioned
The inside of the Cathode Ray Tube is coated with what material?
Fluorescent powder
No coating
Phosphorus
None of the above
The main role of a frame buffer is the ___ of the video signals that drive the display device.
Storage, conditioning, and output
Same speed
Different speed
None of the mentioned above
The colour transformation is performed in the centre of the process___
Dual color model
Single color model
Rotation color model
None of these
Which lights form the viewing colors that we see on the screen?
Red
Blue
Green
All of these
RGB models are used for,
Graphical display
Graphical error
Graphical system
None of the above mentioned
The RGB image is known as the true color image. What does RGB stand for?
Real grey Black Image
Red greyed Background Image
Red Green Blue image
None of the above
The term DDA in the DDA algorithm stands for:
Digital difference analyzer
Direct differential analyzer
Digital differential analyzer
Data differential analyzer
Which among the following objects can be scan converted?
Point, Line, Sector, Arc
Characters
Ellipse, Rectangle, Polygons
All of the above
In ___ a beam of an electron is moved across the screen. It moves from top to bottom considering one row at a time.
Raster Scan Display
Random Scan Display
Both A and B
None of the above mentioned
GUI stands for,
Graphical Usable Interface
Graphical User Interface
Graph Users Interface
Graphic User Interface
Fill in the blank:Each pixel has some intensity value which is represented in memory of the computer. This memory part is known as the ____________.
Frame Buffer
Random Access Memory (RAM)
Picture Memory
None of the above
What is the main reason behind developing algorithms for scan conversion?
The algorithms can generate graphics objects at a faster rate here.
Here, the memory can be efficiently used
Both a. and b.
None of the above
Who among the following developed the CRT (Cathode Ray Tube)?
Charles Darwin
Ferdinand Barun
Thomas Alva Edison
None of the above
Can we represent multiple scenes from a real-world coordinate system on the viewport? If yes, how?
By using multiple viewports
By using multiple window ports
Both a. and b.
No, we cannot represent multiple scenes from a real-world coordinate system on the viewport
In a graphical user interface, the most common input device is,
Mouse
Keyboard
Monitor
Joy stick
Which among the following is best suited for a smooth line drawing on the screen?
Random Scan Display Algorithm
Raster Scan Display Algorithm
Both a. and b.
None of the above
What are Random scan and Raster scan techniques?
Techniques to display an image on the screen
Line Drawing Techniques
Polygon Drawing Techniques
None of the above
Which devices provide the graphics framework with positional data?
Output devices
Storage devices
Input devices
Both B and C
Which of the following statements best define Scan conversion?
The process of digitizing a known picture definition into a set of pixel-intensity for storage in the frame buffer.
Encoding the pixels into bits
Converting the draw able image into a graphical image
None of the above
What is a necessary to specify to generate rotation?
Specific distances between dx and dy
Rotation angle ?
Scaling
Repositioning
Which of the following line algorithms best balances the processing load among all the processers?
Parallel line algorithm
DDA line algorithm
Both a. and b. balances the load equally
None of the above
The transformation set is also known as,
Translation difference
Rotation colour model
Colour Mapping Functions
None of these
Which of the following is defined by the number of pixels present in the frame buffer?
Resolution
Depth
Both a. and b.
None of the above
Which among the following are the types of scanning or travelling of beam in a raster scan display technique?
Interlaced Scanning
Non- Interlaced Scanning
Spiral Scanning
All of the Above