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The technique of setting the intensity proportional to the amount of area covered is used in weighted area sampling.Įxplanation: The technique of setting the intensity proportional to the amount of area covered is used in unweighted area sampling. Anti-aliasing is another name of unweighted area sampling whereas, point sampling is not a type of area sampling.Ģ2. Which of the following is NOT a type of area sampling?Įxplanation: Weighted and unweighted area sampling are types of area sampling classified on the basis of proportionality of intensity. Only the total amount of overlapped area matters, regardless of the distance between the pixel’s centre.Ģ1. The equal area in area sampling contributes _ĭ) Area is not dependent on the intensityĮxplanation: The equal area contributes to equal intensity in area sampling. This sampling rate is called Nyquist rate.Ģ0. The original signal is sampled at a frequency larger than twice. What is lower bound on the sampling rate known as?Įxplanation: Sampling theory tells us that a signal can be reconstructed by its samples. A signal can also be represented as _Įxplanation: The signal can also be represented as a frequency domain, that is why we may represent it as a sum of two different sine waves.ġ9. Line should set an intensity of only a single pixel in a column to black.Įxplanation: A line should not set an intensity of a single pixel in a column to black, but rather should contribute some amount of intensity to each pixel in the column, whose area it intersects.ġ8. Even the thinnest horizontal line has a thickness of one pixel.ġ7. We can think a line as a _ in the grid.Įxplanation: A line can be viewed as a rectangle of defined thickness. If we want to recolor an area that is not defined within a single color boundary is known asĮxplanation: We can paint such areas by replacing a specified interior color.ġ6.
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If the boundary is specified in a single color, and if the algorithm proceeds pixel by pixel until the boundary color is encountered is calledĮxplanation: This algorithm proceeds outward pixel by pixel until the boundary color is encountered.ġ5. _ is defined as set of points such that the sum of the distances is same for all points.Įxplanation: Ellipses is defined as set of points.ġ4. To apply the midpoint method, we defineġ3. Coordinate references in the polyline function are stated asĮxplanation: Coordinate references in the polyline function are stated as absolute coordinate values.ġ2. The algorithm which uses multiple processors to calculate pixel positions isĮxplanation: In Parallel line algorithm each processors calculates pixel positions.ġ1. Which is the best line algorithm to balance the processing load among the processers?Įxplanation: If there are ‘n’ processes then this algorithm divides it into number of partitions and generates line segments.ġ0. In Bresenham’s line algorithm, if the distances d1 < d2 then decision parameter Pk is_Įxplanation: If d1 < d2 then the decision variable is always negative.ĩ. An accurate and efficient raster line-generating algorithm isĮxplanation: Bresenham’s line algorithm is a very efficient and accurate algorithm.Ĩ. Which algorithm is a faster method for calculating pixel positions?Įxplanation: The DDA is a faster method for calculating pixel positions.Įxplanation: The DDA algorithm takes more time than other algorithm.ħ. On raster system, lines are plotted withĮxplanation: Using pixels lines can be plotted.Įxplanation: DDA stands for digital differential analyzer.ĥ. For lines with slope magnitude |m|<1, ?x can be_Ī) A set corresponding vertical deflectionī) A set proportional to a small horizontal deflection voltageĮxplanation:?x can be a set proportional to a small horizontal deflection voltage only if slope magnitude |m| < 1ģ. The Cartesian slope-intercept equation for a straight line isĮxplanation: Equation for a straight line is y = m.x + b.Ģ.
#Mcqs of computer graphics for free
Understand the Concept of Computer Graphics for Free in Detail ġ3.Each pixel has _basic color components.ġ4.Higher the number of pixels,_ the image quality.ġ6.Display card is used for the purpose ofĬ.Receiving graphics data from output unitĪnswer: (b) Sending graphics data to output unitġ7.Several graphics image file formats that are used by most of graphics system areġ8.The GIF format is much _to be downloaded or uploaded over the a file is saved in JPEG format ,some data is lost 3.Personal computer become powerful during the lateĤ.Which environment has been one of the most accepted tool for computer graphics in business and graphics design studiosĥ.Graphics is one of the_ major key element in design of multimedia application.Ħ.Three dimensional graphics become popular in games designing, multimedia and animation during the lateġ0.Raster images are more commonly called
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