psy - MIT OpenCourseWare http://ocw.mit.edu HST.582J /...

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Unformatted text preview: MIT OpenCourseWare http://ocw.mit.edu HST.582J / 6.555J / 16.456J Biomedical Signal and Image Processing Spring 2007 For information about citing these materials or our Terms of Use, visit: http://ocw.mit.edu/terms . Harvard-MIT Division of Health Sciences and Technology HST.582J: Biomedical Signal and Image Processing, Spring 2007 Course Director: Dr. Julie Greenberg HST-582J/6.555J/16.456J Biomedical Signal and Image Processing Spring 2007 Problem Set Y QUIZ 2 will take place on Thursday, May 10, from 9:30-11 am in 56-154 (usual time and place). The quiz will be closed book. Two 8 1 2 11 inch sheet of notes (both sides) will be allowed. The quiz will cover material presented in lectures from March 13 (PDFs) thru April 26 (Random Signals II). Note that there is some overlap with the image processing topics covered on Quiz 1. Coverage of topics on the quiz will be somewhat representative of the amount of time spent on each topic in lectures, labs and problem sets. You are not responsible for material in the course notes that was not covered elsewhere in the course. Please see the annotated outline for listings of specific topics. This ungraded problem set, which includes questions from with Quiz 2 from 2005 and 2006, will help you prepare for the quiz in two ways: First, it gives you a chance to work with recently presented material that was not covered by previous problem sets . Second, it illustrates the type of questions asked on quizzes in prior years. This problem set will not be collected or graded. Solutions will be posted on the course website on Monday, May 7. Cite as: Julie Greenberg, Bertrand Delgutte, William (Sandy) Wells, John Fisher, and Gari Clifford. Course materials for HST.582J / 6.555J / 16.456J, Biomedical Signal and Image Processing, Spring 2007. MIT OpenCourseWare (http://ocw.mit.edu), Massachusetts Institute of Technology. Downloaded on [DD Month YYYY]. Question 1 x [ n ] is a stationary random signal. Each sample value of x [ n ] is independent and uniformly distributed between +1 and 1. y [ n ] is the result of taking the first difference of x [ n ], that is, 1 y [ n ] = x [ n ] x [ n 1] . 2 (a) Compute and sketch the autocorrelation functions R x [ k ] and R y [ k ]. (b) y [ n ] is Gaussian true / false (circle one) y [ n ] is stationary true / false (circle one) y [ n ] is zero-mean true / false (circle one) S y (0) = 2 true / false (circle one) ( S y ( f ) denotes the power spectrum of y [ n ].) Cite as: Julie Greenberg, Bertrand Delgutte, William (Sandy) Wells, John Fisher, and Gari Clifford. Course materials for HST.582J / 6.555J / 16.456J, Biomedical Signal and Image Processing, Spring 2007. MIT OpenCourseWare (http://ocw.mit.edu), Massachusetts Institute of Technology. Downloaded on [DD Month YYYY]. Question 2 (A) (B) (C) (D) Identify the figure that corresponds to each description below: (a) original image A / B / C / D (circle one) (b) image after homomorphic...
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This note was uploaded on 11/07/2011 for the course AERO 16.422 taught by Professor Juliegreenberg during the Spring '07 term at MIT.

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psy - MIT OpenCourseWare http://ocw.mit.edu HST.582J /...

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