I have to improve the ‘picking the bigger glob’ and make it follow the object closer to the last detection position, also I want to implement a ‘natural background remover’ and a simple user interface.
As described in the video, I can use the mouse click to select an color and the keyboard arrows to set the tolerance for this color, smoothing the glob region.

I couldn’t work with the OpenCV, so it’s another generic library. Actually i spent more time making the camera+Processing+Java+library work then writing a code. The library I used is this!

http://en.wikipedia.org/wiki/Computer_vision
http://szeliski.org/Book/

So my idea was to use computer vision to draw and trace the motion of a wheels on a canvas. I was already doing an exercise in fabrication class, to use laser cutter and make various wheels, and then look at their motion. So my intention was to capture the motion of these wheels and draw it by using a computer vision sketch in processing . Below are few ideas that i sketched to see how the drawing should look like.

Lucky i come across an sketch in open processing (link) that tracks a specific selected color from camera input.

color selecting from Arfurqan on Vimeo.

Now all i needed to do is to modify the code so that it tracks and it draws at the same time and does it according to required display.

video 1 from Arfurqan on Vimeo.

home from Gerda Antanaityte on Vimeo.

This is done by using an app called antimap, which captures your position, speed, direction to the compass, while you are rooming in the city. Processing is use to make a sketch which uses these data and translates it into into a visual & sound experiences. So you not only see put also hear his or her journey.

So with a this basic concept we went to drawing board and started sketching how the display would look like and what kind of environment the object would be. The object is just a representation of a persons journey.

So We (Lucas De Sordi & me) found a somehow similar sketch in open processing website (link here). We used this sketch as a reference for our idea because it uses the potions of mouse to produce a certain kind of sound. we liked the idea of a certain kind of sound.

We first made a sketch that visualizes the movement of mouse to produce sound. This was to test the variation and range of sounds that can be produced. Later this movement of mouse would be replaced be the movement of humans in the city.

Untitled from Arfurqan on Vimeo.

In next step (major coding) the data from antimap, the visual display and the production of sound. All these happen written into a simple code. Here are a few screen shots.

Screen Shots

Since the sketch would not upload to the blog with its data (for now). we made a video.

final from Arfurqan on Vimeo.

ok from start we wanted to have a more zen like peaceful melodies sounds, Since the example for the sound was not the right example it was hard for u the change it at this moment, secondly the sound was going to be produced by the direction of once head and this event would also be shown on the display.

The tone was generated by building a sine wave, which is constructed by 3 parameters, a frequency, an amplitude [-1, 1] and a sampling rate. You can learn more about sine waves here . The sketch on the left is a quick render of different waves constructed with different frequencies and amplitudes, which I generated using Audacity. Even though, we are converting data to sound and not the opposite, it is still important to learn how waves are constructed before we build them.

Now, as far as processing is concerned, it seems that minim library makes it an interesting tool to deal with sound, nevertheless, minim examples, which are installed by default in your package, and which come with an exact illustration of how sinwaves works in your code (click Sinewave on the left tab). You don’t have to stick to sinewaves, you can also construct your waves using square or triangulate functions. They are all controlled by the same 3 parameters: (frq, amplitude, samplerate).

In order to move to the code, after understanding how sound is being built, we need to start by having a look on how classes are built , then we use that to manipulate Antimap’s example (Yeah, we all love free examples), or generate your own from scratch, if you aren’t a fan or freebies. I needed it to help deal with csv data input, however, I think that table() could provide a better solution, but I didn’t try it. The whole idea is to use different arrays to control the sine wave parameters in the function SineWave(frq, latitude, out.sampleRate()) then you can manipulate the different values from different arrays and see how interesting results could come along. You can also control sine.portamento() for different effects. If you got a the “buffer underrun in AudioOutput” it is mostly because your draw function has nothing there, so check the processing forum for tips, also don’t forget the minum.stop () at the end of your code, otherwise the noise will loop forever, and it is too noisy indeed:)

The idea is quite simple. What is home?  Probably it’s your center of the world. Every journey starts and ends here.  I picked  my home as initial point and marked it as origin of the drawing. Movement is illustrated by stretching coordinate lines. In that case you can always see how far you are from initial point.

Nautical and celestial cartography, where relations between objects are clearly linked in simple and aesthetic manner were inspiring graphic forms:

first concept sketches

and here’s how my interface sketch looks like.

My first recording started from home to school. I used antiMap application, which gathered data about speed, distance, time, compass position, longitude and latitude. It was interesting experience to see this trip visualized. Somehow it looked like personal documentary cartoon. Here’s how my trip looked like:

Size of ellipse represents speed, color changes are compass position. Even there’s no information about streets, from speed and ellipse position you can clearly define where are crossroads with traffic lights. I never thought how my trip would look like. It shows how maps can be informative as well creative by invoking different tools.

In example you can see only one way trip, but tomorrow I will go to the beach and probably come back home :) It will help to complete my map.

We had to convert this dancing single point into a dancing single line. I added a red to blue & blue to red gradient to it.To make it more interesting.

Code Given

Code Modified