Site hosted by Build your free website today!

Workshop on Signal and Image Processing-2010

Organised by DSP Division, SENSE,VIT University

My Four Days of Workshop at VIT


My journey to attend the four days workshop programme on the title “ WSIP-2010”  held at the VIT university began with a series of thrilling experiences, beginning with the journey from Chennai to Vellore.


 I started my journey from Coyambedu Bus Terminas (Chennai) to Vellore. After I reached Katpadi junction, I took a share-auto and travelled upto Chitoor bus stand, from where I took another autorickshaw and asked the driver to take me to the VIT University Campus. This was the third time I’m visiting VIT. You know what when I first visited VIT , something clicks in my mind after seeing the main gate of VIT  because it was totally resembles one of the IIT’s entrance. But it was pretty good fully white in colour . Well , I reached the entrance at around 8:15 in the morning and call up Prof. S.Mahesh Anand. He directed me to come to DSP laboratory of the Technology Tower. Though i have visited three times i never know where is the Technology Tower. From the gate I  walked about some 5 minutes and saw a huge building with hanging garden system and it was very impressive. I stood there for a while  and ask one of the security guard, sir! If you dont mind can u please help me how to reach Technology tower? He just smile and told, madam this building is the Technology Tower and you are now at  the left side of the tower.Well that was the Technology tower . I slowly entered the builiding took some steps to the extreme right but could not find the laboratory. I was wandering over there and then I took another ten steps and reached the second floor. I walk upto the end of the floor and there I found the laboratory.


 I was one among the 30 participants present in technology tower. The inaugration was scheduled to start by 9 am  and Prof (Dr.) Zachariah C. Alex, Director, School of Electronics Engineering inaugrated the WSIP-2010. The Organising Secretary Prof. J. Valarmathi introduced the team members  of the DSP Division.


The fisrt session was handled by Prof. S. Mahesh Anand and he gave the talks regarding the transforms. He clearly explained why we need a transform? Why other transform like Fourier, Gabor transform fails and why wavelet transform comes into the present scenario in signal and image processing.  Fourier Transform gives the spectral content of the signal, but it gives no information regarding where in time those spectral components appear. Therefore, FT is not a suitable technique for non-stationary signal, hence it fails. Gabor fails due to Uncertainty Principle because we can know only frequency bands exist at what time intervals but not exactly the time instants and it gives a fixed resolution at all times. When the time localization of the spectral components is needed, a transform giving the time-frequency representation of the signal is needed. Hence the wavelet was the ultimate solution. After the talk which last for 1 hour here comes the Hands-on one –to- one MATLAB exercise and practice. It was quiet good but truly speaking, I don’t have the habit of sitting for hours in lab so to me it was like totally my head got eaten up. After the first session next comes the lunch break. I was fully loaded with the food items provided by them.


The second session starts by 2 pm and it was handled by Prof. K. Anusudha on “Digital Watermarking Techniques in Images and Forensic Image Analysis”.  After having a heavy meal I was damn sleepy and I was out of control. Meantime she played a video during the session how evidences can be collected from the crime scene. In the video shown, a person was lying in the jungle and the body was almost decayed and instruction where given how to take evidences from the physical location like taking the foot prints, the bottle lying near the victim, the blood stains etc. After watching the video my sleep has almost gone. The session went on good and it will be a challengeable job working in forensic analysis field. I can say it was the awesome session. After the first day session got completed, they had opened the lab up to 8:30 and make us to work the MATLAB exercise which we haven’t completed.


 The third session starts by next morning 9:30. The day starts with the beautiful talk which was given by Prof. (Dr.) P.Arulmozhivarman on “Practical Design of Finite and Infinite Impulse Response Filters”. The session mainly concentrates on understanding the basics and Practical Design of Finite and Infinite Impulse Response Filters Design of FIR and IIR filters using MATLAB. It was fully regarding filters and in the middle of the session, I was totally blinked because I was not having much knowledge on filters. Though I don’t have much knowledge about filters the Hands-on one-to-one MATLAB exercise and Practice helps me out to know more about the filters. And  the most interesting part is designing of elliptical band pass filter using MATLAB programming i.e., performing filtering operation on input signal where three frequencies has been taken and all are additive in nature. By use of the elliptic filter, the unwanted frequencies present in the signal can be removed.

The session was quiet interesting dealing with filter designs and implementation. The fourth session was handled by Prof. J. Valarmathi on “Statistical Signal Processing: detection, estimation and tracking”. The session gives us an impact on how to find the statistical parameters for a given random signal i.e., generating the cosine (original) signal, adding noise to the original signal, finding mean, standard deviation, covariance and correlation coefficients. She has explained about Weiner filtering and it mainly use in modelling of communication channels, coding of speech/image/video signals, restoration of corrupted speech/images/video, stock-market prediction etc. She explains about autocorrelation etc. followed by MATLAB exercises and practice.  And the second day session ends.


On the third day of the event, morning session proceeds and it was handled by Prof. R. Mona With WSIP ParticipantsSuresh and Prof. (Dr.) P.Arulmozhivarman on the topic “Introduction to TMS320C6713 DSP Processor: Architecture, Functionality, Code Composer Studio and its Frame work. The talk ends for almost 1 hr and fully it was on architecture of the DSP processor, instruction sets and many others. I was getting a bit bored. After the session we went off for lunch and returning back to our place, I was stunned by seeing the kit placed on the table. It was nothing but the TMS3206713 kit. The practical session was very good  and my interest regain back .It deals with the real time application i.e., controlling the bass and treble of a music using filters using SIMULINK, CCS along with the TEXAS processor. After running the program we can able to hear the softer sounds that are in the music and the more dominant sounds in the music. Well that’s all I experience during the lab session and many more programs we did in MATLAB. On the third day of the event we had a photo session with all the participants and the DSP family. It happened in the middle of the Technology Tower.

            The fourth day of the event continues with the used of Code Composer studio interfacing with the real world handle by Prof. Suresh. The session was only for half a day and continued by certificate distribution by the DEAN of School of Electronics Engineering.


  <------ Me (Mona) with Prof (Dr.) Zachariah C. Alex    



DSP laboratory was well equipped with state of the art facilities such as Texas TMS320C6713 DSP Processors, ADSP 2186 Processors and Code Composer Studio Programming Interface environment, Real Time Digital Image Processing facility with CCD camera and high Sampling rate frame grabber, DM642 Multimedia DSP Processor and MATLAB 7.6 R2008. The Professors working there were very enthusiastic, young, talented and innovative. The organizing members were very cooperative and they  are almost like a family. They interacted  more with the student and staff participants and  made us feel comfortable to arise enormous number of questions and free to clarify our doubts. The four days event went on very smoothly without any difficulties


 Apart from this, in the mean time I’ve visited the campus along with one of my Bhutanese friend, a third year civil engineering. We started with the VIT Technology Tower where the events were held, which was furnished with fully equipped labs, classrooms and Seminar halls. All the Engineering departments are confined together in the Technology Tower. Next, the University Library. The University has  a wonderful library named,“ The Periyar EVR Central Library”. Almost 1,26,020 vloumes of books are available and specialised collection of Books, Journals and other non-book materials were available for all the fields. Next the  multi cuisines food court, where varied food items were available starting from chinese cuisines to typical South Indian cuisines. Well from the food court I had a mushroom sandwich and the taste was really very good . I guess everyone must have to taste if u get a chance to visit VIT University.

The three night stay at VIT hostel was pretty fine but I felt something weird because the mess people over there allow us to take food only after showing our workshop ID (freaks me out !!). May be it was due to the rules put  up by the authorities.That was the only thing I could not admit. No offence!!!

MY FEELINGS (Who bothers?)

Well the four days workshop programme gives us a great chance to know more practically. Taking part in such event really help us out from many difficulties. Participating in such event will really take us to our destination. Now my confidence level has reach almost to the peak. Thanks to VIT University for arranging such a workshop for we the student who dont have much practical exposures.

Well, that was all which I’ve experienced during my four days visit at the VIT university campus. It was a great and a brainstorming experience for me. It enabled me to realise my weaker areas and provide a good platform for bringing out my innovative ideas. Such programs need to be attended whenever possible. So with this, I’m now ready to cope with anything that needs to be done. Knowledge comes from experience and exposure.