Computer Science – Computer Graphics

The point (4, 1) undergoes the following 3 transformations successively.
I) Reflection about the line y = x
II) Translation through a distance of 2 units along the positive x-axis
III) Rotation through an angle of ∏/4 about the origin in the counter clockwise direction.
The final position of the point will be

Let the maximum number of pixels in a line be M. The number of subdivisions as most necessary using the mid-point subdivision method of clipping is

Find the incorrect statement(s).

The people of the planet Mars designed a scale for measuring the temperature in which water freezes at 100 units and boils at 250 units. The people of jupiter designed a scale in which water freezes at 75 units and boils at 300 units. A temperature of 200 units in Mars will measure ___ in jupiter.

The two scales coincide at

Oblique projection with an angle of 45° to the horizontal plane is called as

Which of the following curves are symmetric about the line x = y?

Choose the correct statement(s).

The perspective anomaly in which the object behind the centre of projection is projected upside down and backward onto the view plane is called as

Which statement about bean penetration method for producing colour displays is/are true?

x = at²; y = 2at, is the parametric equation of

A line connecting the points (1, 1) and (5, 3) is to be drawn, using the DDA algorithm. Find the value of x and y increments.

The entire graph of the function f(x) = x² + kx – x + 9 is strictly above the x-axis if and only if

The phenomenon of having a continuous glow of a beam on the screen even after it is removed is called as

Perform window to viewport information for the point (20, 15). Assume that (Xwmin, Ywmin) is (0, 0); (Xwmax, Ywmax) is (100,100); (Xvmin, Yvmin) is (5, 5); (Xvmax, Yvmax) is (20, 20). The value of x and y in view port is

A frame buffer array is addressed in row-major order for a monitor with co-ordinate locations varying from (0, 0) to (100, 100) Assuming that one bit of storage is required per pixel and address of (0,0) is 0000, the address of the co-ordinate position (5, 10) is given by

Which display device is best suited for CAD systems?

Whenh the computer is not able to maintain operation and display, bright spots occur in the screen. This is called as

All the following hidden surface algorithms employ image space approach except

The best hidden surface removal method(s) used for complex scenes with more than a few thousand surfaces is/are

The anti-aliasing technique which allows shift of 1/4, 1/2 and 3/4 of a pixel diameter enabling a closer path of a line is

The subcategories of orthographic projection are

The clarity of a displayed image depends on the

Which of the following is an odd function?

In multiple transformation, which of the following are commutative?

In the raster-scan method for transformation, a 90° rotation can be performed by

In the clipping algorithm of Cohen & Sutherland using region codes, a line is already clipped if the,

Choose the function that are periodic.

In Sutherland-Hodgman algorithm for polygon clipping, assume p (present point) lies inside the window and S (Previous point) lies outside the window. Then, while processing through that window boundary, we should

Random-scan monitors are also referred to as

The refresh rate below which a picture flickers is

Pixel phasing is a technique for

When several types of output devices are available in a graphic installation, it is convenient to use

Which of the following points lies on the same side as the origin, with reference to the line 3x + 7y = 2?

If (a, b, c) x (1, 3, 1) = (2, 1, 6), where x denotes the vector product, then (a, b, c) is given by

Which of the following transformations are non-commutative?

Reflection of a point about x-axis, followed by a counter-clockwise rotation of 90°, is equivalent to reflection about the line

Which one of the following is not a linear transformation?

Raster systems display a picture from a definition in a

Back face removal is an example of

A bilinear transformation can be simulated by the transformations.

Choose the correct answers.
To construct the rectangle ABCD, it is enough if

A raster colour display processor supports a resolution of 1024 x 800 with upto 16 milions colour simultaneously displayable. What will be the approximate size (in bytes) of the frame buffer used in the display processor?

A Bezier cubic curve with control point P₀, P₁,P₂,p₃ is defined by the equation

f (u) = _i=3∑³ P_iB_i³ (u)

B³₂ is

Choose the incorrect statement from the following about the basic ray tracing technique used in image synthesis.

A cube with side 3 units is placed so that one of its vertices is at the origin and it has one edge along the positive X, Y and Z axes of a 3-D right handed coordinate system. What is the homogeneous co-ordinate transformation matrix, necessary to move the cube so that it has a vertex at the origin and has one edge each along the negative X, negative Y and negative Z axists.

Which of the following statement(s) is/are true?

Which of the following devices has a relative origin?

A cube of side I unit is placed such that the Origin coincides with one of its vertices and the three axes run along three of its edges. The vertex diagonally opposite to (1, 0, 1) is

A surface appearing black

Hue of a colour is related to its

On a 15 x 15 raster, this figure of white squares is stored such that the first square coincides with the top left corner of the raster . The compression ratio attained by run length coding is approximately

If the eccentricity of a conic is less than one then it is a

Parabola can be got from a right circular cone, by cutting it through a plane that is

Fractals deal with curves that are

A circle, if scaled is only one dimension becomes a/an

Let R be the radius of a circle.The angle subtended by an are of length R at the centre of the circle is

Choose the correct statement.

(2.4) is a point on a circle that has centre at the origin. Which of the following point(s) is/are also on the circle?

Aspect ratio is generally defined as the ratio of the

Let F : R² → R² be the mapping defined by F(x,y) = (x/3, y/4) The image under F of the  ellipse

x²/9 + y²/16 = 1, is

The line segment joining (-1, 0) and (4, 5), if clipped against this window will connect the points

The line segment joining (1, 1) and (4, 2) if clipped against this window will connect the points

The line 2x – y + 4 = 0 if clipped against this window will connect the points

The best hidden surface removal algorithm is

Engineering drawing commonly applies

The basic elements of a picture in volume graphics is

The point at which a set or projected parallel lines appear to converge is called as a

The workstation transformation that maps the normalised device screen onto a physical device, whose x-extent is 0 to 10 and y-extent is 0 to 20 where the origin is the lower left corner is

In the previous question, if the origin is the upper left corner, the workstation transformation matrix is

Consider the three points, A(3, 6, 4); B(2, 5, 5); C(0, 3 , 7) and the view point V(1, 4, 6)
Choose the correct option(s)

In displaying a clipped picture, the efficient method is

A viewgraph is

The best suited hidden surface algorithm to deal with non polygonal, non planar surface patches is

Assuming that one allows 256 depth value levels to be used, how much memory would a 512 x 512 pixel display require to store the Z-Buffer?