Image Processing Image Processing Please wait while the activity loads. If this activity does not load, try refreshing your browser. Also, this page requires javascript. Please visit using a browser with javascript enabled. If loading fails, click here to try again Question 1A technique used to approximate halftones without reducing spatial resolution is known as _________.HalftoningDitheringError diffusionNone of the aboveUGC NET CS 2014 Dec - III Image Processing Discuss itQuestion 1-Explanation: Halftone is a graphic design technique in which image reproduced with the help og dots(various color). A technique used to approximate halftones without reducing spatial resolution is known as Dithering. Error diffusion is a type of halftoning in which neighboring pixel being disturbed(quantization residual is distributed ) that have not yet been processed. So, option (B) is correct.Question 2Given a simple image of size 10 × 10 whose histogram models the symbol probabilities and is given by The first order estimate of image entropy is maximum whena = 0, b = 0, c = 0, d = 1a = 1 / 2, b = 1 / 2, c = 0, d = 0a = 1 / 3, b = 1 / 3, c = 1 / 3, d = 0a = 1 / 4, b = 1 / 4, c = 1 / 4, d = 1 / 4UGC NET CS 2014 Dec - III Image Processing Discuss itQuestion 3A Butterworth lowpass filter of order n, with a cutoff frequency at distance D 0 from the origin, has the transfer function H(u, v given by1 / (1 + [ D(u, v) / D0]2n)1 / (1 + [ D(u, v) / D0]n)1 / (1 + [D0 / D(u, v) ]2n)1 / (1 + [D0 / D(u, v) ]n)UGC NET CS 2014 Dec - III Image Processing Discuss itQuestion 4A graphic display system has a frame buffer that is 640 pixels wide, 480 pixels high and 1 bit of color depth. If the access time for each pixel on the average is 200 nanoseconds, then the refresh rate of this frame buffer is approximately :16 frames per second19 frames per second21 frames per second23 frames per secondUGC NET CS 2018 July - II Image Processing Discuss itQuestion 4-Explanation: Total pixels in the frame buffer = (width x height)= 640 x 480 px = 307200 Here, color depth is 1 bit. Memory required by frame buffer = Memory required for total pixel = Total pixels in the frame buffer x (Color depth) = 307200 x 1 If access time for each pixel on the average is 200 ns Time required to refresh \"frame buffer\" = Memory required by frame buffer x 200 ns = 61440000 nano second = 61440000 x 10−9 second Then, refresh rate of frame buffer = number of frame changes per second = 1 / 61440000 x 10−9 second = 100,00,00,000 / 61440000 = 100,000 / 6144 = 16.2760 = 16 (Approximately) 1 There are 4 questions to complete. You have completed questions question Your accuracy is Correct Wrong Partial-Credit You have not finished your quiz. If you leave this page, your progress will be lost. Correct Answer You Selected Not Attempted Final Score on Quiz Attempted Questions Correct Attempted Questions Wrong Questions Not Attempted Total Questions on Quiz Question Details Results Date Score Hint Time allowed minutes seconds Time used Answer Choice(s) Selected Question Text All doneNeed more practice!Keep trying!Not bad!Good work!Perfect! Last Updated : 15 Jun, 2018 Share your thoughts in the comments Add Your Comment Please Login to comment...