Correct Answer : Ivan Sutherland
Explanation : Ivan Sutherland is considered the father of Computer Graphics. He is the inventor of an interactive graphics system called sketchpad in 1963.
Correct Answer : Graphical User Interface
Explanation : GUI is an acronym of Graphical User Interface. It refers to an interface that allows one to interact with electronic devices like computers and tablets through graphic elements.
Correct Answer : All of the above
Explanation : Computer Graphics is the creation of pictures with the help of a computer. The end product of the computer graphics is a picture; it may be a business graph, drawing, and engineering. In computer graphics, two or three-dimensional pictures can be created that are used for research.
Correct Answer : It refers to designing images
Explanation : Computer Graphics refers to designing or generating images using computers.
Correct Answer : Creation and manipulation of graphics by computer
Explanation : Creation and manipulation of graphics (artificial images) by computer are the features of Computer Graphics.
Correct Answer : Raster and Vector
Explanation : Vector graphics are computer-rendered visual art that follows a mathematical formula. Raster images are made up of thousands of tiny pixels, making them resolution-dependent and ideally suited for photo editing.
Correct Answer : Two-dimensional Plane
Explanation : A two-dimensional plane is used for 2D transformations. Transformations are useful for modifying an object’s position, size, orientation, and shape, among other things.
Correct Answer : 0 - 255
Explanation : The pixel value of the grayscale image defines the brightness of the pixel. Here, the pixel value is stored as a byte value, i.e. an 8-bit value. Hence, the value of every pixel in a grayscale image ranges from 0 to 255.
Correct Answer : Red Green Blue Image
Explanation : The RGB Image which is also known as the true color image or the tri-color image stands for Red- Green- Blue image. This is because an RGB image can be viewed as three different color images: Red Green and Blue.
Correct Answer : None of the above
Explaination : The RGB image has three different values for each color band, and the range of each color is 0 to 255. Hence, an RGB image is stored in a 3-dimensional array where each dimension represents one of the colors, with a value lying between 0 - 255.
Correct Answer : Computer-aided design
Explanation : CAD is software used by engineers, architects, artists, drafters to make a technical illustration in two-dimensional (2D) and three-dimensional (3D). It is a combination of hardware and software that makes engineers designs everything.
Explanation : Interactive computer graphics consists of three components that are:* Frame Buffer or Digital Memory* A Monitor likes a home T.V. set without the tuning and receiving electronics.* Display Controller or Video Controller: It passes the contents of the frame buffer to the monitor.
Correct Answer : Interactive computer graphics
Explanation : In interactive Computer Graphics, the user has some control over the picture, i.e., the user can make any change in the produced image. One example of it is the ping-pong game.
Correct Answer : a string containing both 1's and 0's
Explanation : The pixel mask is a string that contains the digits 1's and 0's to represent the positions to plot along the line path.
Explanation : A curve is made up of an unlimited number of points. Except for endpoints, each point has two neighbors. Explicit, implicit, Bezier and parametric curves are the three types of curves.
Correct Answer : William Fetter
Explanation : In 1960s William Fetter used computer graphics to create cockpit drawing. He along with Verne Hudson did research on computer graphics.
Correct Answer : removing objects and lines
Explanation : Clipping is a technique for removing objects, lines, and line segments that are outside of the viewing pane. Several types of clippings are used in computer graphics like:* Point Clipping* Line Clipping* Area Clipping (Polygon)* Curve Clipping* Text Clipping* Exterior Clipping
Correct Answer : Memory
Explanation : The main purpose of using a framer buffer is to store pixels.
Correct Answer : To draw different types of objects onto the screen
Explanation : We frequently need to draw several types of things onto the screen in computer graphics. Objects are not always flat, and we must draw curves many times in order to draw an object.
Correct Answer : Computer graphics can improve the sound quality of a video
Explanation : Computer graphics has nothing to do with the audio of any device. Its sole purpose is to deal with the imaging and animations part.
Correct Answer : Pixel per inch
Explanation : PPI stands for number of pixels that are present per inch in image.
Correct Answer : Better
Explanation : More number of pixels makes a better resolution of an image.A digital camera uses pixel elements (also known as a pixel) to capture images.
Correct Answer : Video monitor
Explanation : The video monitor is a widely used output device.
Correct Answer : 3
Explanation : There are three types of translation techniques in computer graphics: point translation (which deals with a single point), line translation (which deals with a line), and polygon translation (which deals with a polygon) (deals with a shape).
Correct Answer : pixels
Explanation : A bitmap is a set of pixels that make up an image. It’s a sort of computer graphics that lets you store and show photographs on your computer.
Correct Answer : Both Input devices and Pointing devices
Explanation : Input devices provide positional information to the system they are often called pointing devices.
Explanation : The Resolution is defined as the number of pixels.
Explanation : The video monitor is the commonly used output device since it displays the images on the screen.
Correct Answer : Viewport
Explanation : The display method of the part selected or the design in which the selected element is viewed is called a viewport. An area on the display device to which a window is mapped is known as a viewport.
Correct Answer : The ratio of the vertical points to horizontal points
Explanation : Aspect ratio is the ratio of the vertical points to horizontal points essential to produce equivalent length lines in both directions on the screen.
Correct Answer : Dark line
Explanation : Dark line is not the pattern of the line.
Correct Answer : Digital Differential Analyzer
Explanation : DDA is an acronym of Digital Differential Analyzer. It is an incremental method of scan conversion of lines.
Correct Answer : Bresenham's Line algorithm
Explanation : Bresenham's line algorithm is an efficient method because it involves only integer addition, subtractions, and multiplication operations. These operations can be performed very rapidly, so lines can be generated quickly.
Correct Answer : Translation
Explaination : A translation is used to an object by repositioning it along a straight line path from one co-ordinate point to another.
Correct Answer : x' = x + tx and y' = y + ty
Explaination : We translate a 2-D point by adding translation distance, tx, and ty, to the original coordinates position (x,y) to move the points to a new position (x', y'). x' = x + txy' = y + ty.
Correct Answer : Speech recognizers
Explanation : Speech recognizers allow users to issue voice commands.
Correct Answer : To initiate graphics operation and also to enter data
Explanation : The voice system input is utilized to start graphics operations or to enter data.
Correct Answer : clipping
Explanation : Clipping is the process of removing excess content from a project. Clipping is a way of selectively enabling or disabling rendering activities within a defined region of interest in computer graphics.
Correct Answer : Interface window
Explanation : In layman’s terms, it’s referred to as a graphical user interface (GUI). Users can interact with electronic equipment by using graphical icons and visual indicators like secondary notation.
Correct Answer : Scaling
Explaination : Scaling is the process of changing or modifying the size of objects in computer graphics. The object’s size can be increased or decreased via scaling.
Correct Answer : Rotation
Explanation : Rotation is a process of changing the angle of the object. Rotation can be clockwise or anticlockwise.
Correct Answer : Rotation angle
Explanation : For rotation, we have to specify the angle of rotation and rotation point. The rotation point is also known as pivot point.
Correct Answer : rotates an object in the counter-clockwise direction
Explanation : The positive value of the pivot point (rotation angle) rotates an object in a counter-clockwise (anti-clockwise) direction.
Explanation : Scaling is used to alter or change the size of objects. The change is done using scaling factors.
Correct Answer : Reduce the object's size
Explaination : If scaling factors are less than one, the size of the object will be reduced.
Correct Answer : Values of scaling factors sx and sy are equal.
Explanation : If the values of scaling factors sx and sy are equal, it is called Uniform Scaling.
Correct Answer : 9
Explanation : If the line is neither a visible case nor an invisible case, then it will be considered to be the clipped case. The Cohen-Sutherland algorithm will divide the 2D space into nine regions. All nine regions are assigned codes. Each code is of 4 bits. If both endpoints of the line have end bits zero, then the line is considered to be visible.
Correct Answer : Tiling
Explaination : ‘Tilling’ is the process of drawing several copies of the same image in rows and columns across the interface window until the entire window is covered. In computer graphics, the window remains static while the viewpoint is modified multiple times to accomplish tiling.
Correct Answer : Three axes
Explanation : The x-axis, y-axis, and z-axis are the three axes that make up a three-dimensional graphic. The length, breadth, and height of a three-dimensional object are represented by these axes.
Correct Answer : Surface polygon
Explanation : The most common border representation for a 3-D graphics item is a surface polygon. This surface polygon encloses the object’s inside. A set of polygons is maintained for a description of the object in this way of representation.
Correct Answer : Scan conversion
Explaination : The digitization of a picture definition into a collection of pixel-intensity for storage in the frame buffer process is called scan conversion.
Correct Answer : Bitmap
Explanation : The bit map frame buffer is always 1 bit per pixel.
Correct Answer : 0110
Explanation : The 4-bit code of the bottom-right region amongst the nine regions divided by the Cohen-Sutherland algorithm is 0110.
Correct Answer : Completely inside
Explaination : The line will be completely visible if both end codes are 0000, and the result of their logical OR also 0000.
Correct Answer : Keyboard
Explanation : The most commonly used input device is a keyboard. The data is entered by pressing the set of keys. All keys are labeled. A keyboard with 101 keys is called a QWERTY keyboard.
Correct Answer : Spaceball
Explanation : Spaceball is used for the three-dimensional positioning of the object.
Correct Answer : Impact printers
Explanation : The printers that print the characters by striking against the ribbon and onto the papers are known as Impact Printers.
Correct Answer : Line printer
Explanation : Line printers are the impact printers that print one line at a time. It is a high-speed impact printer as it can print 500 to 3000 lines per minute. Drum printer and chain printer are examples of line printers.
Correct Answer : Touch panel
Explanation : Touch Panels is a type of display screen that has a touch-sensitive transparent panel covering the screen. A touch screen registers input when a finger or other object comes in contact with the screen.
Correct Answer : Digitizer
Explanation : The digitizer is an operator input device, which contains a large, smooth board & an electronic tracking device, which can be changed over the surface to follow existing lines. The electronic tracking device contains a switch for the user to record the desire x & y coordinate positions. The coordinates can be entered into the computer memory or stored or an off-line storage medium such as magnetic tape.
Correct Answer : DDA line algorithm
Explanation : The fastest method DDA for calculating pixel positions is a faster method.
Correct Answer : Boundary-fill algorithm
Explaination : This algorithm proceeds outward pixel by pixel until the boundary color is encountered.
Correct Answer : Space ball
Explanation : A space ball is a 3D positioning device.
Correct Answer : Either Signal strength or coded pulse
Explanation : Either Signal strength or coded pulse determines the position on the data tablet.
Correct Answer : Monitors with no color capability
Explanation : Grayscale images are monochrome images; means they have only one color. Grayscale images do not contain any information about color. Each pixel determines available different grey levels.
Explanation : When we have to display a large portion of the picture, then not only scaling & translation is necessary, the visible part of the picture is also identified. For deciding the visible and invisible portion, a particular process called clipping is used. Clipping determines each element into the visible and invisible portions. The visible portion is selected. An invisible portion is discarded.
Correct Answer : Line drawing application
Explanation : Random Scan System uses an electron beam that operates like a pencil to create a line image on the CRT screen. The picture is constructed out of a sequence of straight-line segments.
Explanation : A shadow mask CRT has 3 phosphor color dots at each pixel position.
Correct Answer : Raster scan system
Explanation : Shadow Mask Method is commonly used in Raster-Scan System because they produce a much wider range of colors than the beam-penetration method.
Correct Answer : Shadow mask method
Explanation : The convergence problem occurs in the shadow mask method of the color CRT monitors. It is one of the limitations of the shadow mask method.
Correct Answer : Two-point
Explanation : “Angular Perspective” is another name for Two-Point. The two vanishing points on the line in a two-point perspective form an angle between them, which is why it is also known as angular perspective.
Correct Answer : One-point
Explanation : The One Point projection is commonly used to depict highways, railroad tracks, and buildings. Only one vanishing point on the horizon line is present in a One-Point perspective, which aids in the creation of railway tracks.
Correct Answer : Equation
Explanation : An equation representation can be used to represent a three-dimensional entity. Three variables, x, y, and z, and four coefficients, A, B, C, and D, make up the equation for a three-dimensional object.
Correct Answer : Picture which is outside the view window
Explanation : The image beyond the view window is examined and preserved throughout the external cutting procedure. The portion of the image that is visible through the view window is discarded. The external clipping method is the polar opposite of the text and curve clipping methods.
Correct Answer : Text Clipping
Explanation : Text Clipping is the technique that manages string clipping. It’s the method for determining which parts of the string should be kept depending on their position in the view window. Text Clippings come in a variety of forms, such as all or none character clipping, all or none string clipping, and so on.
Correct Answer : Weiler Atherton Algorithm
Explanation : Weiler Atherton Method is a 2D algorithm that may also be utilised in 3D space. It is primarily utilised in 2D space, but with the help of Z-ordering, it can also be used in 3D space. The Greiner Hormann Clipping algorithm and the Vatti Clipping method only function in 2D space.
Correct Answer : Random scan system
Explanation : The Beam-Penetration method has been used with random-scan monitors.
Correct Answer : Emissive display
Correct Answer : Flood fill algorithm
Explanation : When the boundary is of many colors and the interior is to be filled with one color, the flood fill algorithm is used.
Correct Answer : Super-sampling or Post-filtering
Explaination : By computing intensities and combining findings to create pixel intensities, super-sampling is also known as Post-filtering.
Correct Answer : Nicholl-Lee-Nicholl algorithm
Explanation : The full form of the NLN clipping algorithm is the Nicholl-Lee-Nicholl algorithm. It is a fast method of clipping.
Correct Answer : Vertical
Explanation : Only if a line is 45 percent is the line path centered on the polygon region.
Correct Answer : line clipping
Explanation : Skala is a clipping procedure that can be used to clip a line or a line segment against a rectangular window as well as a convex polygon. Its algorithm is based on duality and homogeneous coordinates.
Correct Answer : Boundary fill algorithm
Explanation : The Boundary fill algorithm checks whether the boundary pixels or adjacent pixels are colored or not. It leaves it, if the adjacent pixel is already filled or colored; otherwise, fill it.
Correct Answer : A flexible strip used to generate a smooth curve through a designated set of points.
Explanation : The name spline is a flexible strip used to generate a smooth curve through a designated set of points. In computer Graphics, the name spline curves define any combined curve creates with polynomial portions fulfilling specified continuity methods at the edge of the pieces.
Correct Answer : RGB and CMYK
Explanation : There are many color models. Some of them are RGB, CMYK, YIQ, HSV, and HLS, etc. RGB stands for Red, Green, and Blue. This color space is widely used in computer graphics. RGB are the main colors from which many colors can be made. CMYK stands for Cyan, Magenta, Yellow and Black. CMYK color model is used in electrostatic and ink-jet plotters, which deposits the pigmentation on paper.
Correct Answer : Computer display
Explanation : The main objective of the RGB color model is for the sensing, defining, and display of pictures in electronic systems, such as televisions and computers, though it has also been utilizing in conventional photography.
Correct Answer : White
Explanation : RGB stands for Red, Green, and Blue. RGB are the main colors from which many colors can be made. The Intersection of three colors (red, green, and blue) in the RGB model will produce the white color.
Correct Answer : Black color
Explanation : A color model described with the primary colors cyan, magenta, and yellow (CMY) is useful for defining color output to hard-copy devices. The intersection of primary colors in the CMYK color model will produce the black color.
Correct Answer : Red, Green, Orange, Yellow
Explanation : Beam penetration method in color CRT produces four colors only, red, green, orange and yellow. A beam of slow electrons excites the outer red layer only; hence, the screen only shows red color. A beam of high-speed electrons excites the inner green layer. Thus the screen shows a green color.
Correct Answer : Gas discharge display
Explanation : Plasma-Panels are also called as Gas-Discharge Display. It consists of an array of small lights.
Correct Answer : Microphone
Explanation : The microphone is designed to minimize the background sound.
Correct Answer : Direct-view storage tube
Explaination : DVST saves the picture information behind the screen rather than updating it.
Correct Answer : Starbust method
Explanation : A mixture of 24bit line segments is employed in the Starbust approach. It is a character generating method in which only 24 strokes are defined for character generation.
Correct Answer : Point sampling
Explanation : Weighted and unweighted area sampling are two methods of area sampling that differ in terms of intensity proportionality. Unweighted area sampling is also known as anti-aliasing, but point sampling is not a sort of area sampling.
Correct Answer : Flat-panel display
Explanation : The Flat-Panel display refers to a class of video devices with reduced volume, weight and power requirement compared to CRT.Example: Small T.V. monitor, calculator, pocket video games, laptop computers, an advertisement board in an elevator.
Correct Answer : Projection
Explanation : The process of displaying 3D into a 2D display unit is called a projection. The projection changes 3D objects into a 2D projection plane.
Correct Answer : Rasterization
Explaination : The phase of determining the appropriate pixels for representing images or graphics objects is called rasterization.
