## Homework #4 | |

Hi all, The fourth (and last) homework assignment is available now on the course website. The due date is July 4th at 23:59. Good luck! |

21/6/2017, 20:03:28 |

## The tutorial on this Wednesday | |

Hi all, Please note that the tutorial of this Wednesday (21.6) is postponed to be after the last lecture on Sunday, July 2nd, at 18:30 (in Taub 301). Best regards |

19/6/2017, 19:22:30 |

## Homework #3 | |

Hi all, The submission deadline for HW #3 was extended in two days, and now the assignment is due on Wednesday, June 21st, at 13:30. Please also note that some instruction were published in the FAQ page of HW #3 for Question #3. Good luck! |

18/6/2017, 16:36:21 |

## HW #3 - Matlab Part | |

Hi all, Please note the following two comments regarding the Maltab part of homework 3: In subsection c you need to implement a notch filter for zeroing all the DFT-domain components that are deteriorated by the interference ("noise" of vertical lines). While the interference affects also the 0-index DFT-component (also called the DC component), you should not zero this specific component since it represents the mean graylevel of the entire image (if you zero it you'll get a restored image of "texture" over a black background -- which is not what we want). Please also note that the restored image (after the inverse-DFT) should be a real-valued signal (as the symmetry in the DFT domain should be preserved also after the notch filtering). However, note that due the numerical computations in Matlab you may get results that may seem complex-valued, however, with imaginary parts of a very small size (for example, with magnitude of less than 10^-5). These kind of numerical inaccuracies are acceptable. Also be aware to AVOID implicit casting that may provide you a perfectly real-valued restored image (you may do this casting only for the purpose of eliminating numerical errors). |

14/6/2017, 19:30:39 |

## Updates | |

Hi all, Please recall the following planned changes in the lectures/tutorials: On Wednesday, June 7th, a one-hour lecture will replace the tutorial (note that Yehuda's reception-hour will not be held on that day). On Sunday, June 18th, a two-hour tutorial will replace the lecture. On Wednesday, June 28th, a one-hour lecture will be given instead of the tutorial. All the above lessons will be held in the usual times and classrooms. Best regards, The course staff |

2/6/2017, 11:21:21 |

## Homework #3 | |

Hi all, The third homework assignment is available now on the course website. The due date is June 19th at 13:30. Good luck! |

29/5/2017, 15:55:22 |

## Homework #2: Update in the Matlab Part | |

Hi all, In the Matlab part, Section 1 Subsection b: Please note the following small but important update in the EXAMPLE for forming the 2D cosine signal in Matlab. The multiplication of the two cosine parts is at the component level using the operator .* (and not just * that applies matrix multiplication and may result in a signal that does not correspond to the given mathematical formula). Accordingly, the Matlab code should be: phi_xy=A*cos(2*pi*omega_x*(x_grid)).* cos(2*pi* omega_y *(y_grid)); Please recall that, once in a while, you should check the FAQ page of the assignment. |

22/5/2017, 16:19:17 |

## Homework #2 | |

Hi all, Please note that the due date of homework #2 was extended to May 24th at 10:30. |

21/5/2017, 12:46:42 |

## Changes in tutorial classroom and reception hour | |

Hi all, As in last week, the tutorials will be held in Taub 5 from now on. In addition, my reception hour will be on Wednesdays between 15:00-16:00. Best regards, Yehuda |

9/5/2017, 12:22:05 |

## Homework #1 Grades and Solution | |

Hi all, The HW 1 assignments were graded and returned to the boxes on floor 0. The solution is available under the assignments tab in the course website. |

8/5/2017, 13:43:03 |

## Homework #2 | |

Hi all, The second homework assignment is available now on the course website. The due date is May 22nd at 13:30. Good luck! |

3/5/2017, 18:20:37 |

## Homework #1 | |

Hi all, Please note that the due date of homework #1 was updated to April 27th at 13:30. |

5/4/2017, 13:09:37 |

## Homework #1 | |

Hi all, The first homework assignment is available now on the course website. The due date is April 25th at 13:30. Good luck! |

4/4/2017, 15:48:15 |

## Welcome to the 236327 course | |

Dear students, We welcome you to the "Signal and Image Processing by Computer" course. Please note that in this upcoming semester (Spring 2017) the grades will be determined by a final exam (70%) and homework assignments (30%). Good luck! The course staff |

8/2/2017, 13:20:26 |