Kate Ground Clubbed Foot

Motion Capture

Hi (potential) readers:

regret the delay in writing, but things have been to the top with this in school, work, cienciayvideojuegos, and everything else, but I have not forgotten this corner where knowledge leisure and entertainment converge. On this occasion I'm going to talk about motion capture systems, or Motion Capture short MoCap.

MoCap the systems allow to a computer to receive a series of data from an external system, which, in general, reflect the movement of a body in the real world .

MoCap systems have been used in different areas within computer science, from medicine, detecting deviations from the natural movement of a human being and thus diagnose any conditions, to the world of film and video games , allowing you to capture real human expressions and applying these movements to a 3D or animated character in a videogame .

traditional MoCap the systems developed from the concept of visual landmarks. The marks are visual images or easy to identify patterns within a complex image. The process is performed to obtain visual markings known as segmented , and consists of algorithms for image processing based on manipulation contrasts, edge detection (edges), threshold lighting, among others. The visual markers are placed in defined positions on a scuba-type suit (see picture).



are arranged a series of cameras that capture the movement of the user, then apply segmentation and finally obtain the displacement of visual marks, as shown in the video below .

There are other methods to capture the position and movement of the user, one of them is based on the capture of this information through the use of accelerometers and gyroscopes.

The video above shows this type of MoCap system built from acceleration sensors and gyroscopes, these suits do not need an imaging system unlike the previous system. The tricky part in this type of suit is the actual position obtained from the acceleration and this requires numerical integrators, which carry a numerical error of the integrator itself, pushing the numerical results of the actual values. To avoid such errors exist filters and other algorithms.

Finally I comment that the information captured by these suits can be used online as seen in the first video, or stored for later apply for a 3D model or animation in a video game software, among many others. One of the main formats in which data is stored with extension *. BVH files, as can be seen in the following pages:

www.okino.com/ conv / imp_bvh.htm


http://pagesperso-orange.fr/jb.perin/Mocap/MocapAnimation.html


Well I hope that's all he has been pleased, and here we are back. Bye.

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A pause


Hello are you? do not really know if someone is reading, but this space is created with the aim of capturing ideas, thoughts and some news and science, to which are found Citi can find some topics that I personally very pleasing.

For the moment I'm writing the thesis (PhD) and to finish this process has been done long, long, so I find little time to wander here with you, but I did not want to miss this month not tell something.

Within the industry of 3D animation and video games is leading the need to create 3D models of everything from the characters, costumes, weapons, up scenarios complete as cities, planets, galaxies and other whole, so that in this short article I talk to them about Blender 3D ( http://www.blender.org/ ).

Blender 3D is a 3D modeling software, which initially tried to be a video game engine to include the modeling, but to make a software that includes both parties and meets the expectations of current users is impossible. Thus evolved more in Blender 3D design hand using the game system for animation and cool effects, and of course play (easily). Ahhh but I have not told the main feature of this software, this software is that it is free and open to the features it has, like the fact that programmers around the world working on it to create new features, fix bugs and improve the program's features.

In an article last software I mentioned this to compare with 3DStudio, and the main difference that was mentioned was the co $ to (check it below), and the results really can not see any difference between the two, except for immense difference of tutorials and free help with Blender counts, so I think is a very practical and useful option for purposes that concern us here (Science and Video Games).

This image made it myself in 5 minutes

If you want to download the newest version to date (2.46) go to the http://www.blender.org/ looking tutorials and if there some very good videos on youtube made by Super3Boy ( www. youtube .com / watch? v = xYkaHylMPdc )

The best reason I've found to use Blender 3D is the ability to export the model including textures, software to be used in the creation of video games: Panda3D, but that's another story character. Greetings and welcome back to school, or work or whatever you do, lol and soon I will talk a bit about what my friend said Caro, how do you smileshooter cameras? Bye.

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Head tracking BodyPad

Hello (whom I read):

I continue with this video game and science, last month I could not write anything, hard work, but now I write a bit about what I been working headtracking. The English word comes from combining the word head = head tracking = up, which means in a practical way to track the movement of the head.

This topic has been very popular the last few months due to work Jhony shown by Lee, a researcher at the University of Carnelli Melon in the U.S., certainly have seen it, and if there is a quick video this which shows and explains (in English) which is the headtracking and developed in his laptop demo deployed on TV and used as a tracking device to control the Wii head and glasses with infrared LEDs. In addition to Mr. Lee, have already developed a host of replicas of their work using the PS3 to sony camera, web cameras with special filters (easy to do) and even a handle virtual environments, which can recognize the position and orientation head of the person are the 6 degrees of freedom (DOF).

I assure you headtracking technology using infrared devices will be in fashion next year or perhaps the same December 2008, I myself am already working on a game that allows to exploit this technology. But good as this is a science blog and video game news and not just going to explain a bit how the headtracking.


When a player or user interacts with a 3D virtual environment through a screen, the images we see displayed on the screen correspond to the image of a virtual camera is taking the virtual world, much like recording a video the real world, when notes a video recording the 2D screen in the chamber, so we look at the 2D display is the monitor or TV.

is then obtained by sensors and mathematical calculations the position of the player's head with respect to the screen, it is interpreted as part of the virtual world would be seeing if this was real. This will adjust the position and orientation of the virtual camera with respect to the virtual world to follow (tracking) the movement of the head (head), so this camera shows correspond to what the player would see if he was inside the virtual world. Technically

minimum required for these applications are attractive or interesting is the 2D tracking of the head, ie with respect to the plane fora screen or monitor, but to build really interesting things are needed 3D parasentir you zoom in or out of the world through a virtual window.

The only limitation of this technology is that if the player does not move the image seems as flat as ever, the depth is obtained through movement. To achieve the objects definitely see off the screen even without movement, it is necessary to use the stereoscope, but that is another topic to discuss.

Greetings and continue jugando.investigando.

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Hi, this time we will talk about a new interface for gaming, specially designed for Xbox and PlayStation. If you thought the Wii had overtaken the games where you get to move your arms as lunatic, because apparently no longer.

There is a new interface called BodyPad developed in France by the company XKPAD Inc. This interface consists of a set of devices that are placed on the player's body, two for the legs, one for the waist and four arms , including a pad and a series of buttons on the handles that are in the hands.

The image is a copy of the official.

scientifically interesting thing is that this interface has no motion sensors or accelerometers like the Wii Remote operation is based on buttons, each item placed on the elbows and knees are large buttons that are activated by flexing the elbows or knees is a very simple principle, the only thing they did was adjust buttons on the body parts that flex when doing kicks or blows, the only extra is that it includes a wireless transmitter, but from then on there was a technological breakthrough but creativity to put the buttons where best suited.

would be worthwhile to give a tour of the page to see some videos are interesting. Greetings Hello

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independent video games

such, I'm here again for a while devoting my evening to write a little about video games and science. On this occasion I'm going to talk about a conference on very interesting game, called the Idependent Game Festival (IGF), which involved the game developers who do not belong to any major company within the gaming industry. In this conference (link here ) last February 18-22, have been submitted a series of games where or graphics, or 3D design, sound effects, or are so impressed, that because of modest economic resources which has an independent game developer, what impresses is the designers cratividad , which tests to create something new and innovative, so the main sponsors of this event are Sony, Microsoft (XNA), Gamasutra and Gleemax, hungry predators creative minds to take them to their ranks.

Among the main games that participated in the condurso to be the best independent game are: Audiosurf, a game that lets you surf your songs into your PC in a 3D World of Goo , a puzzle game in a world where small pieces and Goo are the laws of physics make them suffer and everything in 3D, others would be more convenient to visit the page, but not I could go without mentioning the winner of this year, Crayon Physics Deluxe, which already has several of those who know me have been addicted for a while on my computer, the game is based on a 2D virtual world where you must collect a bursting star spread throughout the virtual world, but the laws of physics apply in a "rigorous" (there are still bugs), so drawing objects with the mouse to simulate a crayon seeks to promote, push, "catapult" or what comes to mind, to get the ball to the star, the interesting thing is that every object you draw on the screen becomes mass density according to arbitrary, that is suffering from the effects of gravity, which starts making fun of physics your best weapon to achieve your goal, if you think I exaggerate, I invite you to try to pass the first 3 missions and you will see that it becomes addictive and entertaining, if they can download it here .

An image of the game winner (his graphics do not impress you?)

For timing is everything and hope to be participating in the 2009 edition IGF, but before that we SDQ in the national event like Creanimax , but that's another story. Hello

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Vaporware

to talk ? Navigating

as usual I came across an interesting article about what a vaporware and it caught my attention because as you may have noticed I'm researching into the world of software and games. Summarizing the article we define a vaporware as follows:

Vaporware: a software or hardware whose launch was announced by the developer in advance, but the process failed and everything was just an idea. Ie there were too optimistic and responsible for their total development failed to complete.

In recent years there have been different kinds of vaporware , to the extent that it has created a sort of annual contest in search of the worst vaporware, the contest is done Wired News ' Vaporware Awards where one can vote and leave comments about the worst year vaporware.

Finally the most important thing it is incumbent upon those interested in the area the game and sciences, a common vaporware game occurs when a highly anticipated by gamers is delayed for a while, but after that time is further delayed and thus the worst of these cases was the game Duke Nukem Forever promised since 1997 and has not been released to date.

But something very important for the owner of this blog have been vaporware consoles, ie gaming systems announced but never released, as is the case of L600 Indrema a home console for video games PS as 2 or Xbox but completely assembled on the Linux operating system, allowing the creation of open software for the console, this allowing any person to develop games or other applications within the platform and the platform.



The company that developed the console declared bankruptcy the April 6, 2001 under the comment that the company needed $ 10,000 USD to continue and to launch the console . You see

peers, colleagues and fellow readers, not enough to have a good idea and keen to develop a project within the area of \u200b\u200bthe game , need good relationships to enter the market, since on this market innovation is a key factor and especially the $ $ $ without which there can be carried fruition a project of this type.

Receive a greeting and keep in touch.

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the Open Source future

As everyone who has used a computer know, there are a myriad of applications, packages, programs, tools, etc, you can buy in a store or online, these programs have a cost, which is calculated for pay the salaries of programmers, editors, marketers, distributors, investment recovery, etc. Dichp cost is in many occasions too high (especially if you tried to get a Windows NT/2000/XP/Vista original), this is no longer out of reach legal application developers with low incomes, as to generate, such a small publishing company, an image for a poster to be paid licensing programs such as Photoshop, CorelDraw, etc. (or perhaps work wonders with the Paint), or for example to generate a 3D animation or video must pay very high costs of specialized software, as is the case 3DMAX or Maya, so that the costs of software license investment are very high for SMEs, so it is necessary to consider tools called Open Source or Open Source .

sum expressed in (http://www.opensource.org/) an Open Source software meets the following:

1. There is no restriction to include or sell the material within an application, this low ningpun cost
2. must access the software source code in question,
3. The license must allow modification and redistribution of the new code under the same conditions,
4. Amendments must be redistributed with a name other than the software version original, unless the distribution permit with "patches"
5. There should be no discrimination against any person or group,
6. There should be no discrimination on the field that is used
7. software program rights must be applied equally to the application or redistribution made,
8. rights are retained even if the software is part of the distribution of other software,
software
9. rights do not apply to other software tools used (each with its own rules),
10. The license is the same regardless of the type of technology employed.

With these 10 points we observed a characteristic very important for this type of software, which is that everyone can "get their hands" or change it, so it is generating new variations of the original code, not to mention the ball failed attempts, which gives it life of its own each program, allowing the generation of variations that may be more useful in some application that the original program, plus the fact that it can be put into another program can generate more complex applications and enriched with the goodness of each program included , not to mention the differences in cost, say an example.

want to generate a billboard with 3D imaging, whether a new computer has already been paid a license for Windows, but if you look to go from the cheapest (but definitely not easier) can build a hardware specifications you require, consider the costs:

Traditional Software:

• UP WINDOWS XP PRO w/SP2 $ 214.15 USD (http://www.edimestore.com/)
• Autodesk 3ds Max 9 $ 3,700.00 USD (http://www.nextag.com/)
• Adobe Photoshop $ 246.99 USD (http://www. shopdit.com /)

Total = $ 4161.14 USD

Open Source Software Linux

• $ 0.00 USD (Http://www.mandriva.com/)
  
• PovRay $ 0.00 USD (http://www.povray.org/)
• Gimp $ 0.00 USD (http://www.gimp.org/)

Total = $ 0.00 USD

is why the open source software that constitutes a choice when deciding on a tool, but given the low cost there is little business in this type of software, so that the support is low, although there are plenty of forums to resolve the doubts.

sole obligation to decide on a style software is having the time to understand operation and in some cases the installation of the same, so that user demand to be closer to the structure of the program, which for some is asking too much because we're used to programs run by themselves and need not know anything about them.
The results speak for themselves, here are a couple of pictures:

Open Source (PovRay) Traditional (3ds Max)

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The Wiimote, the user interface

The company Nintendo released (as you know all) of the console called Wii. The innovation in this unit are not your graphics advanced and its awesome sound and graphics processors and audio are practically the same as the last generation. The new console is its sta new control called Wiimote or Wiiremote. The Wiimote is
device has an accelerometer (a device that measures the acceleration) for each coordinate (x, y, z), a sensor rotating in two axes (pitch and roll), an infrared camera, Bluetooth communication and various button.
Given these new technological adjustments made to control video games, the Wiimote has enabled the creation of a new type of game, just play a game of tennis or a couple of rounds in the box. But the interesting thing is that this device already used in other areas because of its versatile (http://www.youtube.com/watch?v=0awjPUkBXOU&feature=related or http://www.youtube.com/watch?v=Jd3-eiid-Uw) .
is why it is planned to build new applications with this type of device Any ideas?