The stress has an end :)

My last post has been a while ago! That’s been the result of heavy brain work activated by assignments.

Indeed, lectures have been less but the work load in the labs has potentially increased.

In Machine Learning lecture, supervised learning was finished and revised. The professor started with unsupervised learning. We got introduced to some super interesting applications like speech recognition or heavily compressed transmission of data by pattern classification with the K-Means algorithm.
The lab parts of the unsupervised learning parts were due On Wednesday night. I finished report and code of linear regression (curve fitting), logistic regression (classification) and neural network (brain like construct for prediction).


Linear Regression

Result for different alpha

Linear Regression – Overfitting


Logistic Regression – Clustering with decision boundary


Neural Network – XOR

I managed to generated ball coordinates with MATLAB. Now I have a ball rotating in my application – very very fancy!
Within the lecture back and front clipping algorithms were discussed for 3D spaces. Interesting although quite complex. I might implement that in my application. It’s not compulsory though.

3D Ball

When it comes to Introduction to Computer Vision I didn’t spend any time recently with that subject. The other subjects kept me too busy and I wanted to have some spare time for me too :) I hope this is not bouncing back on me!
Here are some pictures from my last assignment:

Intersection Histogram of two frames

Intersection Histogram of two frames

Color Histograms of one Video Frame

Color Histograms of one Video Frame

Image Convolution - Averaging Kernel and Edge Detection Kernel

Image Convolution – Averaging Kernel and Edge Detection Kernel

There’s only one subject left to give you an update: Advanced Transform Methods. The professor explained the Gabor Transform – please ask me in a couple of weeks what it is!
I was working hard in the labs to understand the Fourier Transform and to write a report for the assignment. I think I got a clue now. I generated spectrograms and other fancy things in the lab:

15 Hz Sinus Function 100 Hz Sampling Comparison

Fourier Transform of 15 Hz Sinus Function with 100 Hz Sampling Comparison

4096 Spectrogram

Spectrogram of Audio file with three core frequencies – Window Size 4096

Now you might think apart from studies nothing else. Well you are almost right. I’ve been in the cinemas Sunday night to watch Interstellar! It’s a quite deep movie but it was very good entertainment. Many times the movie surprises with the story although the overall story is the most common in Hollywood movies: The planet needs to be saved. At certain points I wonder about who was first: chicken or egg. The physics sometimes aren’t very clear but that doesn’t harm the entertainment value.
And on Wednesday I have been to Hyde Park and Leicester Square for a walk. I loved the Christmas decoration and flashing banners along Oxford Street and Picadilly Circus!

Enjoy the pictures!!


Kitchen Cleaning!!



Seems like I opened a laundry store…


4 Letters :) I really really miss you dear :*


We wen’t in to check the prices. We’ll come back when it’s time :)


Studying Extreme :)


Oxford Street!


Picadilly Circus!

Good Bye October!

Some update regarding the expenses in October:

It’s important to mention, that September has only been half a month. Taking this in account, I managed to reduce the “Eating Out” massively. I consider buying a sandwich for lunch or buying a drink at a bar as “Eating Out”. However, bringing my sandwich/lunch from home helped a lot reducing this amount. Considering the half month, my grocery shopping has almost not changed. For the month November I plan to increase the grocery shopping a little in order to reduce the “Eating Out” more. The “Misc” category rose dramatically because of some necessary hard to avoid expenses. I have my bicycle, some door hooks and a IEEE Membership as major expenses in this category. In the category mobile phone a dramatic drop was possible because I recharged quite a large amount for Skype in September, so it wasn’t necessary to recharge in October.  In September I had quite a lot single rides in the public transport sector, this was reduced with a travel card and only few single rides. The category sport covers the membership in the gym.

Comparison SeptOct SpendingsOctober

Happy Halloween!

Indeed this week there was a lot happening. Many nice but also some weird things.

First of all I skipped Gym now four times because of this ongoing cold. However, I feel that I can go tomorrow again.

My cute girlfriend isn’t here this year but I’m very confident that we two celebrate Halloween together next year. Here or in India. We can achieve this! Miss you heaps!!

This week we covered “Neuronal Networks” in Machine Learning. However “cover” is not the right word. Scratching the surface describes it better. I was a little disappointed when she was taking 25 minutes of the lecture to calculate the output of an AND/OR neuron and repeated the AND/OR in combination for the XOR. Well this all could have been done faster and especially not by forcing ppl to write the basic math on the board. The lab is kind of easy because it’s super guided but I’m not sure when it comes to judge the generated curve which was fitted in the data points. See the pictures!

Again I didn’t work on my computer graphics assignment because I’m kind of far ahead of the schedule and other assignments having deadlines. However the lecture was very interesting and explaining the virtual camera along with different projection types, like parallel and perspective projection. Next weeks lecture is cancelled!

There was no “Introduction to Computer Vision” lecture this week. The professor said, that he covered a lot of material especially everything needed for the assignment. So he’s giving us now four weeks to finish the assignment and covers then end of November the rest of the material. I submitted the assignment on Thursday afternoon. Let’s see how the assigned mark will be. I’ll let you know next week!

In “Advanced Transform Methods” we were discussing the Heisenberg Uncertainity. Don’t ask! I’ll need to adjust myself too.

U know there was Halloween this week. The postgraduate Halloween party in the GriffInn  Whitechaple on Thursday was more like a normal bar night with additional decoration and a few costumed people. This was probably because this was one day before Halloween. A night later I tried to go to the visage 80s bar around my home but I was denied to enter. The reason was “You gotta be here with people!”. That wasn’t so much fun, and little disappointed I went back home and slept. Still it was exciting because there were plenty of people with bloody costumes roaming in the streets in front of that bar. Just yesterday I have gone to another bar in Whitechapel with a study mate, he was inviting me for a drink. It was a nice night out after a long day in the lab!


Decoration in the GriffInn Whitechapel!!


Goldie with winter clothes!


Bread, Lettuce, Chicken, Orange, Cheese! Yum!!


no comment. I suddenly had the feeling to paint this on my lunch box over lunch.


Comparison of different learning values for the curve fitting algorithm.


Candy from the Build a Bear workshop. I struggled eating it. I guess it’s only kids who figure out in no time how this works.


Zero Error(cost) but still a crap curve!


Scary what!


Trick or treat! Well this is kinda both!


My new Table!


Memories! There was a restaurant called “Silver Spoon” in India close to the university :)


Black and Orange meet!