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Final Programming Project: Atomic Nature of Matter This is the final project for my f2023 intro programming class. /********************************************************************** * Approximate number of hours to complete this assignment * **********************************************************************/ Number of hours: 5 hrs /************************************************************************** * The input size n for BeadTracker is the product of the number of * * pixels per frame and the number of frames. What is the estimated * * running time (in seconds) of BeadTracker as a function of n? * * Justify your answer with empirical data and explain how you used it. * * Your answer should be of the form a*n^b where b is an integer. * **************************************************************************/ Since the number of beads in a picture is negligible compared to total number of pixels in a picture, the nested for loop doesn't contribute significantly to the run-time, while the creation of the BeadFinder objects (one per each picture) takes significantly more time because it needs to traverse through all pixels in the picture. We create one BeadFinder object per picture; assuming that the operations take constant time per each pixel, we hypothesize the run-time to be linear to the input size n (number of total pixels read). number of pixels in a frame = picture.height() * picture.width() = 640 * 480 = 307200 pixels number of frames n/pixels t/sec 10 3072000 4.097 20 6144000 7.905 40 12288000 15.123 80 24576000 31.44 160 49152000 60.193 ratio 60.193 / 31.44 = 1.914 Ratio rounded to closest integer = 2 log_2(2) = 1 b = 1 Pick one data point in order to compute a T(N) = a * N 60.193 = a * 49152000 a = 60.193 / 49152000 a = 1.225e-06 T(N) = 1.225e-06 * N, where N is the total number of pixels read in across all frames being processed /********************************************************************** * Did you encounter any serious problems? If so, please describe. **********************************************************************/ No. /************************************************************************** * List any other comments here. * **************************************************************************/ It's overrrrrrr
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