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WorksheetsCOMPUTER GRAPHICS- TEST 1
Total questions: 25
Worksheet time: 9mins
1) The distortion of information due to low-frequency sampling is known as _____
Sampling
Aliasing
Inquiry function
Anti-aliasing
Expansion of line DDA algorithm is _________
Digital difference analyser
Direct differential analyser
Digital differential analyser
Data differential analyser
What does Pixels stand for?
Picture Extend
Picture Elevation
Picture Element
None of these
To maintain uniformity between all 2D transformations, all transformations are converted into __________ matrix form.
2X2 matrix into 4X4 matrix
2X2 matrix into 3X3 matrix
3X3 matrix into 2X2 matrix
None of these
Resolution is usually expressed in
.Twips
. Inches
. Points
. Pixels
The colour mode where all the colours used in image is defined as a combination of Red, green and blue colours is
CMYK
ANPA
HSB
RGB
1. In which condition your successive x and y values are increment by 1 in DDA algorithm
a. m < 1
b. m ≥ 1
c. m = 1
d. m > 1
2. In DDA algorithm if your slope value is greater than 1 then what formula is applied for xi+1 and yi+1
a. xi+1 = xi + 1/m and yi+1 = yi + 1
b. xi+1 = xi + 1 and yi+1 = yi + 1
c. xi+1 = xi + m and yi+1 = yi + 1/m
d. xi+1 = xi + 1 and yi+1 = yi + m
3. In Bresenham's line drawing algorithm, your current decision parameter i.e pk ≥ 0. How you calculate the next decision parameter.
a. pk+1 = pk - 2∆y + 2∆x
b. pk+1 = pk + 2∆y - 2∆x
c. pk+1 = 2∆y - 2∆x
pk+1 = pk + 2∆y + 2∆x
4. In Bresenham's Line drawing algorithm which case your successive x and y values will increase continuously.
a. pk < 0
b. pk ≤ 0
c. pk ≥ 0
d. pk = 0
5. The standard straight line equation is
a. y = (y2 - y1) / (x2 - x1)
b. y = y + x - (1/m)
c. y = ∆y / ∆x
d. y = mx + c
6. Types of computer graphics are
a. Vector and raster
b. Scalar and raster
c. Vector and Scalar
d. None of these
Expansion of line DDA algorithm is
Digital difference analyzer
Direct differential analyzer
Digital differential analyzer
Data differential analyzer
Which algorithm is a faster method for calculating pixel positions?
Bresenham’s line algorithm
Parallel line algorithm
Mid-point algorithm
DDA line algorithm
An accurate and efficient raster line-generating algorithm is
DDA algorithm
Mid-point algorithm
Parallel line algorithm
Bresenham’s line algorithm
The resolution of an image refers to the quality of the image.
TRUE
FALSE
_______is memory (to save each pixel’s color & position for full image demonstration)
CPU
GPU
Monitor
Frame buffer
Transformations can be applied on _______________.
Objects
Co-ordinates
Both Objects and Co-ordinates
None of the options
I want to move an object from one point of the screen to another point. I should apply (a) transformation.
The point that remains fixed during a rotational transformation is ____________.
Lower left corner of an object
Origin of the Co-ordinate system
All points of the object
None of the above
I want a rectangle to become a square shape. I can achieve it by using _______________ transformation.
Scaling
Mirror Reflection
Rotation
translation
If we translate a point (10,15) by 4 and 6 respectively, the resultant point will be _________.
(10,15)
(16,19)
(14,19)
(40,90)
I have a rectangle defined by upper left corner (10,12) and lower right corner (20,18). If I apply a scaling of sx=3 and sy=2 on the rectangle, the new value of lower right corner will be ________.
(23,20)
(30,24)
(60,54)
(13,14)
