Computer Graphics 40+ Interview & certification questions with answers
1.What mean by computer graphics?
Computer graphics deals with generating images with the aid of computers.
Today, computer graphics is a core technology in digital photography, film, video games, cell phone and computer displays, and many specialized applications.
2.What are computer graphics and its types?
The two types of computer graphics:
- raster graphics
- vector graphics.
While both in essence set out to achieve the same goal (a high-quality digital image), they use different techniques and therefore have different strengths and weaknesses.
3.What is computer graphics in C?
Graphics programming in C used to drawing various geometrical shapes (rectangle, circle eclipse etc.)
use of mathematical function in drawing curves, coloring an object with different colors and patterns and simple animation programs like jumping ball and moving cars. Set Up in Code Blocks.
4.What are the 4 elements of computer graphics?
The seven basic elements of graphic design are line, shape, color, texture, type, space and image. Each has its own strengths and weaknesses.
5.What is computer graphics and its components?
Typical graphics system comprises of a host computer with support of graphical devices and fast processor, large memory, frame buffer, display devices (color monitors), input devices (mouse, keyboard, joystick, touch screen, trackball etc.)
output devices (LCD panels, laser printers, color printers.
6.Why are graphics used?
Graphics are used for everything from enhancing the appearance of Web pages to serving as the presentation and user interaction layer for full-fledged Web Applications.
Different use cases for graphics demand different solutions, thus there are several different technologies available.
7.What are the features of computer graphics?
Reflective surfaces, refractive surfaces, depth test, dithering, shadows, ambient occlusion, double buffering, tessellation, geometry shaders, hull shaders, domain shaders, vertex shaders, fragment shaders, texturing, cubemaps, mipmaps, diffuse lighting, specular lighting, ambient lighting, point light.
8.What is graphics and design?
According to the American Institute of Graphic Arts (AIGA), graphic design is defined as “the art and practice of planning and projecting ideas and experiences with visual and textual content.”
In other terms, graphic design communicates certain ideas or messages in a visual way.
9. What are graphic materials?
Graphic materials include still images of all types, such as prints, drawings, photographs, posters, postcards, pictorial advertisements, cartoons, comic strips, portraits, landscapes, book illustrations, born-digital pictures, etc.
10.Why is digital graphics used?
Digital graphics combine text and images to produce a graphic product which cane used for s specific purpose.
By using both writing and images they can present an idea or a message in an eye-catching and effective way. They can be printed or used onscreen.
11.What are the advantages of computer graphics?
It has the ability to show moving pictures and thus it is possible to produce animations with computer graphics. on. the viewer moving around them.
A typical example is walk through made by builder to show flat interior and building surroundings.
12.How do graphics work?
A graphics card works along the same principles. The CPU, working in conjunction with software applications, sends information about the image to the graphics card.
The graphics card decides how to use the pixels on the screen to create the image.
It then sends that information to the monitor through a cable.
13.What are the 7 types of graphic design?
- Product design. Product designers use their creative prowess to research, design and develop new products.
- Branding design.
- Website design.
- Print design.
- Publishing design.
- Environmental design.
- Animation design.
14.What is graphic design example?
Graphic design is the practice of composing and arranging the visual elements of a project.
Designing the layout of a magazine, creating a poster for a theatre performance, and designing packaging for a product are all examples of graphic design.
15.How many types of graphic devices are there?
There are two basic types of file devices, vector and bitmap devices. These use different formats and have different characteristics.
16.What is the role of graphics in multimedia?
Graphics make the multimedia application attractive.
In many cases people do not like reading large amount of textual matter on the screen.
Therefore, graphics are used more often than text to explain a concept, present background information etc.
17.How is graphics used in advertising?
Another reason why graphic design is essential to great advertising is how it communicates your message to potential customers.
Eye-catching graphics can bring your ideas to life and effectively display what you want your audience to know about your company and the products or services you sell.
18.What are the limitations of computer graphics?
The disadvantages of computer graphics is that they are not very easy to create.
They require a lot of specialized skills and a lot of resources as well.
This results in the cost of the computer graphics becoming very high. It also takes a lot of time and effort to create computer graphics.
19.What is the origin of computer graphics?
History of Computer Graphics (CG) Computer Graphics (CG) was first created as a visualization tool for scientists and engineers in government and corporate research centers such as Bell Labs and Boeing in the 1950s.
20.What are the applications of computer graphics?
Some of the applications of computer graphics are:
- Computer Art: Using computer graphics we can create fine and commercial art which include animation packages, paint packages.
- Computer Aided Drawing
- Presentation Graphics
- Image Processing
21.What is difference between graphics and multimedia?
Computer graphics are pictures and films created using computers. Multimedia is content that uses a combination of different content forms such as text, audio, images, animations, video and interactive content.
22.What are the classification of computer graphics?
Computer graphics has been classified into two categories according to the application domain and requirements.
They are passive and interactive computer graphics.
23.Who introduced computer graphics?
It was invented in 1960 by great researchers Verne Hudson and William Fetter from Boeing.
Computer Graphics refers to several things: The manipulation and the representation of the image or the data in a graphical manner.
24.Who is the father of computer graphics?
Turing Award, the highest honour in computer science, for “his pioneering and visionary contributions to computer graphics, starting with Sketchpad, and continuing after.” Sutherland is often recognized as the father of computer graphics.
25.How are raster images stored?
A raster is technically characterized by the width and height of the image in pixels and by the number of bits per pixel.
Raster images are stored in image files with varying dissemination, production, generation, and acquisition formats.
26.What is the use of clipping?
The primary use of clipping in computer graphics is to remove objects, lines, or line segments that are outside the viewing pane.
27.How many phases are there in the evolution of computer graphics?
The literature review alludes that the evolution of computer animation data consists of four phases:
phase 1 (the 1980s), phase 2 (1990–2005), phase 3 (2006–present) and the “big data” phase (next generation)
28.What is raster size?
Raster images are of a certain size, such as 800x600 for the sample image above, indicating the image is 800 pixels wide and 600 pixels high.
This size affects both the size of the image file and how the image looks on screen or when printed out.
29.What is 2D clipping?
Clipping is a process that subdivides each element of a picture to be displayed into its visible and invisible parts, thus allowing us to discard the invisible parts of the picture.
In 2D, the clipping process can be applied to a variety of graphics primitives such as points, lines, polygons and curves.
30.What is 3D clipping?
Just like the case in two dimensions, clipping removes objects that will not be visible from the scene
The point of this is to remove computational effort
3-D clipping is achieved in two basic steps – Discard objects that can't be viewed
31.What is polygon in graphics?
Polygons are used in computer graphics to compose images that are three-dimensional in appearance.
Usually (but not always) triangular, polygons arise when an object's surface is modeled, vertices are selected, and the object is rendered in a wire frame model.
32.What are the hardware devices used for computer graphics?
The hardwares devices used for the computer graphics are Input Devices:
Keyboard, Mouse, Data tablet, Scanner, Light pen, Touch screen, Joystick
Raster Devices- CRT, LCD, LED, Plasma screens, Printers,Vector Devices- Plotters, Oscilloscopes.
33.What is computer graphics and visualization?
Graphics and visualization studies methods for manipulating and interacting with digital images and visual content as well as processing and modeling datasets.
34.What is vector and pixel?
A pixel is a single point or the smallest single element in a display device.
If you zoom in to a raster image you may start to see a lot of little tiny squares.
Vector images are mathematical calculations from one point to another that form lines and shapes.
35.What is raster layer?
Raster layers are the most obvious kind.
When you draw, paint, or paste an image as a new layer, you are working with raster layers.
These layers are pixel based.
The background layer is always a raster layer.
Control layers are not visible themselves; they just control the appearance of other layers.
36.What is 3D transformation?
3-D Transformation is the process of manipulating the view of a three-D object with respect to its original position by modifying its physical attributes through various methods of transformation like Translation, Scaling, Rotation, Shear, etc.
37.What is point clipping?
Point clipping tells us whether the given point X,Y is within the given window or not; and decides whether we will use the minimum and maximum coordinates of the window.
The X-coordinate of the given point is inside the window, if X lies in between Wx1 = X = Wx2.
38.What are advantages of clipping?
Clipping enables one to enhance beauty of images displaying products and create a good image that attracts customers and builds up brand reputation.
The creative addition to images using clinical technology works like magic for marketing of services and promotion of business.
39.What do you mean by 2D transformation?
Transformation means changing some graphics into something else by applying rules.
We can have various types of transformations such as translation, scaling up or down, rotation, shearing, etc.
When a transformation takes place on a 2D plane, it is called 2D transformation.
40.What is distance clipping?
Near clipping distance and far clipping distance refer to the near and far plane of the viewing frustum.
Anything closer to the eye than the near clipping distance isn't displayed (it's too close), and anything further away from the eye than the far clipping distance isn't displayed either (it's too far away).
41.What is parallel projection in computer graphics?
Parallel projection is a kind of projection where the projecting lines emerge parallelly from the polygon surface and then incident parallelly on the plane.
In parallel projection, the centre of the projection lies at infinity.
42.What is segment computer graphics?
Segmentation allows to organize display files in sub-picture structure.
It allows to apply different set of attributes to different portions of image.
It makes it easier to the picture by changing/replacing segments.
It allows application of transformation on selective portions of image.
43.What is the difference between bitmap and raster?
A bitmap is a grid of individual pixels that collectively compose an image.
Raster graphics render images as a collection of countless tiny squares.
Each square, or pixel, is coded in a specific hue or shade.
44.What is 2D shearing?
Shearing deals with changing the shape and size of the 2D object along x-axis and y-axis.
It is similar to sliding the layers in one direction to change the shape of the 2D object.
It is an ideal technique to change the shape of an existing object in a two dimensional plane.
45.What is 3D reflection?
It is also called a mirror image of an object. For this reflection axis and reflection of plane is selected.
Three-dimensional reflections are similar to two dimensions.
Reflection is 180° about the given axis. For reflection, plane is selected (xy,xz or yz).
46.What is fixed point scaling?
A fixed-point number that is only scaled by binary point position is equivalent to a number in slope bias representation that has a bias equal to zero and a slope adjustment factor equal to one.
This is referred to as binary point-only scaling or power-of-two scaling.
47.What is window port?
Window port is the world coordinate area to display.
A window is a graphical control element.
It consists of a visual area containing some of the Graphical User Interface (GUI).
Furthermore, there is a frame by a window decoration.
48.What is image clipping?
Image clipping refers to the process of removing or separating specific elements within an image.
Clipping can be used to remove an object in order to be placed in front of a coloured or a transparent background or even on another image.
As a result, people, objects and backgrounds can be removed from the image.