From fowler at ece.msstate.edu Tue Dec 1 20:18:44 2009 From: fowler at ece.msstate.edu (James E. Fowler) Date: Tue Dec 1 20:19:03 2009 Subject: [ece8453] Re: ECE8453 In-Reply-To: <81b08faf0912011748v10e7f95fsc4b73d008e82df6b@mail.gmail.com> References: <81b08faf0912011748v10e7f95fsc4b73d008e82df6b@mail.gmail.com> Message-ID: <4B15CE84.4050308@ece.msstate.edu> > There appears to be a gap in the online notes between week 12 and 13 > compared to the videos. The notes don't cover all the runlength coding. I don't know what happened with this. I have revised the lecture notes for week 13 to include the runlength discussion. -- ======================================================================= | Dr. James E. Fowler | | Professor and Graduate Program Director | | Department of Electrical & Computer Engineering | | Geosystems Research Institute (GRI) | | Mississippi State University | | | | fowler@ece.msstate.edu | | http://www.ece.msstate.edu/~fowler | | | ---------- Postal Address ---------------------- Contact Info --------- | Box 9571, 406 Hardy Rd. | ECE: Rm. 225, +1 (662)325-3640 | | Mississippi State, MS 39762 | HPC2: Rm. 208, +1 (662)325-2578 | | USA | Fax: +1 (662)325-2298 | ======================================================================= From fowler at ece.msstate.edu Wed Dec 2 22:39:03 2009 From: fowler at ece.msstate.edu (James E. Fowler) Date: Wed Dec 2 22:39:32 2009 Subject: [ece8453] Re: ECE 8453 Q6 In-Reply-To: References: Message-ID: <4B1740E7.4040708@ece.msstate.edu> > Once the signal is turned into a 1D vector, there is no way to know the > 2D dimension of the original image. Are we to assume the image is > square for this exercise? The best thing to do is to pass the number of rows and number of columns into the parts of the decoder that need it. In practice, this type of information (along with number of wavelet decomposition scales, etc.) is usually stored in a header at the start of the compressed bitstream, occupying a negligible overhead. You can just add it to the Matlab function arguments. -- ======================================================================= | Dr. James E. Fowler | | Professor and Graduate Program Director | | Department of Electrical & Computer Engineering | | Geosystems Research Institute (GRI) | | Mississippi State University | | | | fowler@ece.msstate.edu | | http://www.ece.msstate.edu/~fowler | | | ---------- Postal Address ---------------------- Contact Info --------- | Box 9571, 406 Hardy Rd. | ECE: Rm. 225, +1 (662)325-3640 | | Mississippi State, MS 39762 | HPC2: Rm. 208, +1 (662)325-2578 | | USA | Fax: +1 (662)325-2298 | ======================================================================= From fowler at ece.msstate.edu Fri Dec 11 09:46:08 2009 From: fowler at ece.msstate.edu (James E. Fowler) Date: Fri Dec 11 09:46:28 2009 Subject: [ece8453] Grades Posted Message-ID: <4B226940.8070104@ece.msstate.edu> I have finished grading the final exams, and have posted the resulting statistics to the class website. Additionally, I have posted final course grades to Banner. I will be keeping the final exams. If you want to know your score, you can email me a request, and I will email your score to you. Alternatively, if you wish to see your exam, email me for an appointment. As a final note, I would discourage you from using the code that you have written this semester in your later research endeavors. The code you have written is very simplistic and doesn't implement a variety of functionality useful in real-world applications (biorthogonal wavelets, symmetric extension, arbitrary-length input signals). Additionally, what you've implemented is very slow, and may not have been thoroughly tested. Rather, you should look into using the Matlab Wavelet Toolbox, or QccPack (http://qccpack.sourceforge.net), both of which offer much greater functionality than we have implemented this semester. Also, remember to sign up for ECE8483 Image & Video Coding for next semester! Have a great break! -- ======================================================================= | Dr. James E. Fowler | | Professor and Graduate Program Director | | Department of Electrical & Computer Engineering | | Geosystems Research Institute (GRI) | | Mississippi State University | | | | fowler@ece.msstate.edu | | http://www.ece.msstate.edu/~fowler | | | ---------- Postal Address ---------------------- Contact Info --------- | Box 9571, 406 Hardy Rd. | ECE: Rm. 225, +1 (662)325-3640 | | Mississippi State, MS 39762 | HPC2: Rm. 208, +1 (662)325-2578 | | USA | Fax: +1 (662)325-2298 | =======================================================================