Communities, open web and technologies by Bogomil Shopov » Mashup

How to control HTML5 slides with your hands via webcam

Bogo — Tue, 31 Jan 2012 13:23:48 +0000

I had an idea to show kind of human computer interaction during my Fosdem talk. I may not use that, because I will not have time to polish it, but it works quite well if you want to use it.

The Idea
The idea is to control slides only by moving my hand, without any devices in it.

The plan:
0. My web-cam should detect my move
1. After detection an event should be triggered
2. As a final action the slide should move to the next one

Motion detect

$ git clone https://github.com/sackmotion/motion.git
$ cd motion
$ ./configure
$ make & make install

Configure it

Motion comes with a great almost working config file, so just copy it to make it “official”:

$ cp  /usr/local/etc/motion-dist.conf /usr/local/etc/motion-dist.conf

Open it, search for those values, edit them and read what are they for:

;on_event_start value
event_gap 60

to become:

on_event_start xdotool key Right /OR xdotool search "Mozilla Firefox" windowactivate --sync key --clearmodifiers Right/
event_gap 1

Event triggering

You may need to install xdotool using your package manager. This tool allows you to emulate keyboard action in different combinations, but I will need to emulate pressing the right arrow key.

How it works:

When web-cam detects movement an event emulating ‘right arrow’ key is pressed. Since I am using HTML5 DZslides from here, this allows me to move to next slide only with moving my hand in front of my webcam.

Run

Run it and move your hand in front of your camera. You may want to turn on the logging to see the motion detection and the event detection if it’s not working at first.

$ motion

If you have any questions, please let me know.

I am Wikileak’ed

Bogo — Mon, 30 Jan 2012 10:46:18 +0000

A friend of mine just show me a info about my efforts to establish Pirate Party in Bulgaria published on Wikileaks:

(SBU) A Bulgarian Green Party leader and two other Bulgarian
activists have started a petition to establish a Bulgarian “Pirate
Party” which advocates for free downloading of copyrighted materials
among other things. Under Bulgarian law, 5,000 signatures are
required for a political party to be formally established. Given
the fact that Bulgaria’s Green Party has generally attracted less
than one percent of the vote in national and EU elections, it is
unlikely that the fledgling Pirate Party would surpass the four
percent voting threshold needed to win a seat in Parliament.
Nonetheless, if this new party begins to win support from the
general public, IPR enforcement and legislation could face political
obstacles in Parliament in the future.

P.S Bulgarian Green Party leader == me
Source

Installing #JRebel on #Fedora and #Eclipse Helios

Bogo — Tue, 18 Oct 2011 11:53:16 +0000

Since we launched free version of JRebel for non-commercial products called JRebel Social I was curios how fast I can install it on my Fedora 15. I thought it will be a hard task, but I was surprised how easy I done it.

What is JRebel?

First of all this is a must have tool for every Java developer. Why? See this cool PDF for an great answer to that question. or watch this video.

0. Let’s install Eclipse HELIOS first via yum.

#yum install eclipse

Note: It does install and JDK also, so you don’t have to be worried about that anymore

1. Install the Eclipse Market place

Eclipse market place is not installed by default on Fedora’s version so you will need to do that.
1. Click on Help >> Install new software
2. Choose “All available sites” and write “marketplace” like shown here:

3. Install it

2. Install JRebel

Click on Help >> Eclipse Marketplace and choose/ search for JRebel and click on install:

Select all of these, if you are not sure what to do or read more about them here:

Read and accept the JRebel License and click on Finish button

3 Configure

Go and login to https://social.jrebel.com/ in order to get a FREE (yes no money charged) license for JRebel

Register and follow the menu to activate your license

Start the eclipse and choose you will use JRebel Social:

Working with it

Read more how to use it here with screenshots and instructions

Subscribe to my RSS and win a free postcard (via snailmail)

Bogo — Fri, 27 May 2011 14:10:56 +0000

Hello,
If you don’t know me, my name is Bogomil – Bogo for short. I am from Europe (Bulgaria).

I am an openweb hacker and a community enchanter (because I help people to create magic with their skills).

I am writing here about OpenWeb, FOSS Community management, hacking, Javascript, PHP and different interesting stuff and if you subscribe to my RSS feed (click here to do that) and if you send me your address (click here to send it to me via secure form) I promise I will send you a nice postcard using snail mail or I can buy you a beer if we meet somewhere.

Visit my blog

If you are coming from a planet or a link, please visit my blog to see what I am writing about.

Thanks,
Bogo

Yet another benchmark test.

Bogo — Tue, 24 May 2011 16:07:34 +0000

Today I found another benchmark test on presentation.

Here are results:

Detailed results are available here..
The Unknown browser is Dooble and Safari – unknown is rekonq, Firefox 6.0.1 is latest nightly.

My systems runs latest Ubuntu.

What is #OpenData

Bogo — Thu, 12 May 2011 13:34:16 +0000

#opendata from Open Knowledge Foundation on Vimeo.

Pirate Party member Azyz Ammami beaten in detainment

Bogo — Tue, 11 Jan 2011 17:34:53 +0000

Internal sources from Tunisia confirm that jailed Pirate Party member Azyz Ammami has been beaten by police officers. Furthermore, he was forced to take a pro-regime lawyer instead of his own.

Pirate Party members Azyz Ammani and Slim were imprisoned on Friday and are being charged on account of anonymous DDoS attacks with degradation of state property. There is currently no contact with them and it is not known whether the charges will be dropped or the case will go forward.

Pirate Parties International urges European and Tunisian politicians to intervene and ensure that Azyz’s and Slim’s human rights are respected.

Update (12.01): More info here (Google translated). We have notified a lot of MEP’s and some news stations (in Bulgaria) and our ambassador in Tunisia.

The arrests come in the context of a “cyberwar” between the Tunisian authorities and web activists, who have been struggling to break through the country’s extensive censorship wall.

(picture by Aljazeera)

Please contact your governments and MEP to help freedom of speech and fight against censorship and violence.

Diaspora* privacy is a myth?

Bogo — Mon, 10 Jan 2011 08:31:40 +0000

One of the good things about Diaspora* project is it’s privacy. Anyone is able to delete ALL data from a POD and to move to another POD or just to use any other way to connect with friends.

I have created 3 accounts on joindiaspora.com, diasp.eu and diasp.org. After few weeks I have deleted 2 oh them and after another few weeks, the information about my accounts is still visible via search.

I still don’t see how my privacy is protected here. Fail or a bug?

Word Cloud during the keynotes (#moz10)

Bogo — Wed, 07 Jul 2010 18:11:07 +0000

#moz10

Many browsers on Fedora (Safari and IE)

Bogo — Wed, 30 Jun 2010 08:53:16 +0000

If you need a lot of browsers, like me, to test some web stuff, this info can be useful for you.

Safari on Fedora

1. You need Wine (yum install wine*)
2. Download Safari from here (choose – Safari 5.0 for Windows XP, Vista or 7)
3. Click on exe file to install.
4. Done

IE on Fedora

I know, yes, I know. What a hell I need IE on Linux. Some of my clients still using this ‘most used browser’…

yum -y install wine*
yum -y install cabextract

Get the package and install it. But before that, read the legal stuff from here. Yes, IE is FREE, but you still NEED a valid license for Windows to use it. WTF?!?

wget http://www.tatanka.com.br/ies4linux/downloads/ies4linux-latest.tar.gz
tar zxvf ies4linux-latest.tar.gz
cd ies4linux-*
./ies4linux

Increasing the OpenID security through the mobile telephone SIM card as a combination of elliptic curves and Diffe-Hellman algorithms

Bogo — Mon, 15 Feb 2010 16:29:39 +0000

You can see the slides from my speech about how to Increase the OpenID security through the mobile telephone SIM card as a combination of elliptic curves and Diffe-Hellman algorithms:

Secure OpenID

View more presentations from Bogomil Shopov.

This month in Pictures

Bogo — Fri, 29 Jan 2010 10:29:34 +0000

1. Freedom
On January 14th , 2010 there was a massive protest around the Parliament building in Sofia under the slogan “Bulgaria is not Big Brother, 2010 is not 1984”. The protest unites citizens, political parties and many organizations around their demand against the latest change in the data retention legislation.

Here I am:

2. Family
Daddy, could you walk faster, please. Mammy, please keep us on focus

3. The fucking weather

Last week, the weather surprise us all. -21 C is a temperature level for Scandinavia, not for Bulgaria: