Monday 9 July 2012


Where In The World
Computer Scientists Develop Program To Decipher Location Of Photograph Computer scientists designed a program that can analyze a photograph to identify where it was taken. The program scans the scene on the photo, noting colors, textures and lines, and uses these elements to compare it to more than six million images previously tagged with locations on online databases. The program has an average success rate of 16 percent, which is better than random chance or a human guess.


A picture may be worth a thousand words -- but years after it’s snapped, it may be tough to tell where in the world that photo was taken. To solve the problem, researchers have devised the first computer program that can analyze a single photo and fill in the blanks.
Computer scientists at Carnegie Mellon University in Pittsburgh, Pa., designed the program. First, they upload the image. The computer scans the scene and takes note of color, texture and lines -- things the human eye can't always perceive. Then, the computer compares its results to more than 6 million digital photos already tagged with locations on the digital-image-sharing website Flickr.
"It does well on landmark images, things that are very recognizable, like the Eiffel Tower or Tiananmen Square," said James Hays, a computer scientist at Carnegie Mellon.
The program also does well on geographic locations that have a unique look, like the deserts of the American Southwest. Computer scientists tested the program on a set of 200 photos.
"It succeeds about 16 percent of the time," Hays said. That number may sound low, but researchers say it's 30-times better than chance and better than the average person taking an educated guess. They also say the rates will improve as people continue to upload and share their photos in cyberspace, giving the program more data to pull from.
Computer scientists say the program could eventually be used in forensic investigations by detectives or in the military.
ABOUT GPS: The Global Positioning System (GPS) is a satellite-based navigation system made up of a network of 24 satellites placed into orbit by the U.S. Department of Defense. GPS was originally intended for military applications, but in the 1980s, the government made the system available for civilian use. GPS works in any weather conditions, anywhere in the world, 24 hours a day. GPS satellites circle the earth twice a day in a very precise orbit and transmit signal information to earth. GPS receivers take this information and use a combination of signals to calculate the user's exact location. Essentially, the GPS receiver compares the time a signal was transmitted by a satellite with the time it was received. The time difference tells the GPS receiver how far away the satellite is. Now, with distance measurements from a few more satellites, the receiver can determine the user's position and display it on the unit's electronic map.
WHAT ARE PIXELS: "Pixel" is short for picture element, and represents a single point in a graphic image. Graphics monitors display images by dividing the screen into thousands (or millions) of pixels, arranged in rows and columns. A megapixel equals one million pixels. Pixels are a measure of digital image quality: the more pixels, the better. The modern digital camera works on the same principle as a conventional camera, but instead of focusing light onto a piece of film, it focuses it onto an image sensor array -- called a charged coupled device (CCD) -- made of tiny light-sensitive diodes that convert light into electrical charges. It turns the fluctuating waves of light (analog data) into bits of digital computer data. The more sensors that are packed onto the CCD's surface, the higher the pixel count, and the higher the resolution of the final images.
http://www.sciencedaily.com/videos/2008/1202-where_in_the_world.htmhttp://www.sciencedaily.com/videos/2008/1202-where_in_the_world.htm

Thursday 5 July 2012

WiNdOwS MoBiLe



8 new features in Windows Phone 8


New release....

info uploaded by prem

WindowsPhone8.jpg

Microsoft showcased the latest version of its mobile OS Windows Phone 8 to developers and select audience in San Francisco on Wednesday. While some are calling it Microsoft's last attempt at remaining relevant in the mobile space, others are really excited about the offerings in Windows Phone 8. Here are the top 8 features in Windows Phone 8.

1) Multi-core processor support
Windows Phone 7.5 was limited to single-core processors. With multi-core processors becoming the norm, this move will help Windows Phone based phones compete with the Androids and iPhones of the world.
2) Bigger, sharper screens
Windows Phone 7.5 maxed out at 480X800 (WVGA) resolutions. Windows Phone 8 supports two new screen resolutions - 1280x768 and 1280x720, opening the door to 720p displays.
3) MicroSD card support
Windows Phone 8 comes with MicroSD support, so users are no longer limited by the built-in storage.
4) NFC wireless sharing
NFC, or Near Field Communication, technology enables devices to communicate with each other over radio frequencies without any physical contact (much like Bluetooth). Windows Phone 8 comes with built-in NFC support that lets you share information (like a contact) with another NFC-enabled device.
5) Internet Explorer 10
The next version of Windows Phone comes with the same web browsing engine as Window 8 PCs and tablets. IE10 is faster and more secure, with advanced anti-phishing features like SmartScreen Filter to block dangerous websites and malware.
6) Wallet
You can keep debit and credit cards, coupons, boarding passes, and other important info in your Wallet. Paired with a secure SIM or NFC, it can even be used to make payments.
7) Nokia Maps
Maps in Windows Phone 8 will be powered by Nokia and will offer turn-by-turn navigation in several countries. The ability to store maps offline so they can be operated without a data connection will be a nice plus.
8) Revamped Start screen
New colours, user resizable tiles mean that the start screen is more personal than ever.

Sunday 1 July 2012

microsoft

Technology Lab / Information Technology

Microsoft targets 2012 for Windows 8

According to a Microsoft roadmap, Windows 7's and Windows Server 2008 R2's …


When we first started posting news tidbits regarding Windows 8, we warned readers not to expect the operating system to arrive until 2011 at the earliest, and we noted that 2012 was more likely. After the problems caused by the long gap between the releases of Windows XP and Windows Vista, Microsoft said that starting with Windows 7, the company would work really hard to follow a three-year release cycle. Windows 7 was released on October 22, 2009, so it makes sense that Windows 8 will get here in 2012, assuming no delays. That might be a slightly harder feat to achieve given that Windows 8 will be a major release (like Windows Vista was, as opposed to a minor one, like Windows 7 was) but since Windows 7 arrived less than three years after Vista, Microsoft should be able to pull it off.
windows_server_8_roadmap.png
The roadmap posted by msftkitchen, therefore, doesn't really show anything too surprising: the operating system is indeed codenamed Windows 8 (we knew that), it will be a major release (we knew that), and it is currently slated for 2012 (we guessed that). The successor to Windows Server 2008 R2 is also expected to arrive in 2012, but the server roadmap doesn't give the release a name or even a codename (we were expecting something like Windows 8 Server). Please remember, though, that the tilde in front of the 2012 year is there for a reason: Microsoft isn't setting anything in stone.
In terms of final names, we're like to see "Windows 8" and "Windows Server 2012," again assuming no major delays and assuming Microsoft is going to stick to the same naming scheme. When Microsoft decided to keep the codename for Windows 7 as the final name of the product in October 2008, we noted that this new naming scheme was likely to remain for future Windows client releases; it would be really confusing, not to mention terribly foolish, to have only one release with a number suffix in its name. As for the Windows server releases, the year suffix signifying a major release and the R2 suffix signifying a minor release seems to be working just fine. We don't see much reason to change this system, and for the sake of consistency, hopefully Microsoft doesn't eithe.