The popularity of programming languages

The TIOBE Programming Community index is an indicator of the popularity of programming languages. The ratings are based on the number of skilled engineers world-wide, courses and third party vendors. The popular search engines Google, Bing, Yahoo!, Wikipedia, Amazon, YouTube and Baidu are used to calculate the ratings. The index can be used to check whether your programming skills are still up to date or to make a strategic decision about what programming language should be adopted when starting to build a new software system. 

Position Mar 2013	Position Mar 2012	Delta in Position	Programming Language	Ratings Mar 2013	Delta Mar 2012	Status
1	1		Java	18.156%	+1.05%	A
2	2		C	17.141%	+0.05%	A
3	5		Objective-C	10.230%	+2.49%	A
4	4		C++	9.115%	+1.07%	A
5	3		C#	6.597%	-1.65%	A
6	6		PHP	4.809%	-0.75%	A
7	7		(Visual) Basic	4.607%	+0.24%	A
8	9		Python	4.388%	+1.10%	A
9	13		Ruby	2.150%	+0.74%	A
10	10		Perl	1.959%	-0.74%	A
11	8		JavaScript	1.370%	-2.02%	A
12	48		Bash	1.009%	+0.78%	A-
13	15		Lisp	0.942%	+0.02%	A
14	12		PL/SQL	0.921%	-0.50%	A--
15	11		Delphi/Object Pascal	0.889%	-0.84%	A
16	16		Visual Basic .NET	0.888%	+0.10%	A
17	14		Transact-SQL	0.836%	-0.09%	A-
18	17		Pascal	0.697%	-0.07%	A--
19	21		Lua	0.697%	+0.17%	B
20	26		Assembly	0.633%	+0.21%	B

Controlling of the car by Kinect.

OpenCV 2.4.3 released!

OpenCV 2.4.3 is finally out. It should be the most mature OpenCV to the moment.

The nicely formatted changelog can be seen here; here are the highlights:

• Greatly extended GPU (i.e. CUDA-based) module.
• The brand new ocl (OpenCL-based) module that unleashes GPU power also for AMD and Intel GPU users. It’s not included into the binary package, since there are different SDKs, and it’s not turned on by default. You need to run CMake and turn on “WITH_OPENCL”. Also, please note that this is very first version of the module, so it may be not very stable and not very functional.
• Much better performance on many-core systems out of the box. You do not need TBB anymore on MacOSX, iOS and Windows. BTW, the binary package for Windows is now built without TBB support. Libraries and DLLs for Visual Studio 2010 use the Concurrency framework.
• About 130 bugs have been fixed since 2.4.2.

SPECIAL NOTE for Ubuntu x86 12.04 users: By default OpenCV is now built with “-O2″ optimization flag instead of “-O3″ on 32-bit Linux. The compiler in the 32-bit version of Ubuntu 12.04 produces incorrect code with “-O3″, so it’s strongly recommended not to use this flag.

For more information click here.

Augmented reality

On this video, we have present a program with augmented reality.
It was implemented using the OpenСV functions. 
The program receives a video stream from an ordinary web camera and looking at every frame the chessboard pattern(with size = 4 * 5). Then, it is counting the rotation vector and translation vector and adds a 3D model in place of checkerboard pattern.

3d reconstruction

It's our first programm for 3d reconstruction.For this goal we have Kinect camera.The programm uses algorithm surf for finding the feature points and uses OpenCV cvFindExtrinsicCameraParams function for finding the matrices of rotation and translation .In the video you can see, how creates the point cloud of the real room, using ~20 frames from Kinect

Driving a car

it works!

Transmission the data to the chip FT232RL (in Linux you don't have to install the driver) takes place through the COM port per protocol MODBUS.
For this purpose we use the library libmodbus.
(libmodbus is a free software library to send / receive data according to the Modbus protocol. This library is written in C and supports RTU (serial) and TCP (Ethernet) communications. For more information look its documentation.)
We tested the 16th feature - write data into a sequence of registers.
Our message consisted of 4 registers:
1st register - the movement of engines (on / off, direction), the other three registers - the power of the engines.

Kinect 3D-Puzzle

This program allows to restore the 3d model of an object with at least 2 photo of the scene. The location of the each frame is adjusted by these keys:

"q","w","a","s","z","x" - for location editingб shift+"q","w","a","s","z","x" - for editing the rotation angle. To select frame you need to press the key that corresponds its number (from 1 to 9). For the implementation of this project we used the OpenNI library.