Weekly Blog

Hello everybody i am alright and i suppose that you are all also alright and happy and hello mr  Fernandez and this week was at an accelerated pace than all the other weeks and this week is also from the last weeks of this semester and this week was much harder than all the other weeks and not slightly harder but much harder and it was also very fun ok goodbye


Laser-Equipped Wheelchairs Let the Blind “See” Obstacles in Their Path



Laser-Equipped Wheelchairs Let the Blind “See” Obstacles in Their Path

By Patrick Morgan | May 19, 2011 8:56 am

The story of a PhD student weaving his way through a busy university corridor doesn’t usually make for breaking news. But then the average PhD student isn’t wheelchair-bound, visually impaired, and testing a new laser-based wheelchair navigation system. In front of a crowd of onlookers earlier this month, a student performed the first public demonstration of a wheelchair that lets blind people “see” and avoid obstacles, afterward remarking that it was just “like using a white cane” (presumably underselling the technology to blunt the jealousy blooming in the onlookers).

From the user’s perspective, the new high-tech wheelchair is quite simple: You hold a joystick in one hand to drive the motorized chair, while the other hand engages a “haptic interface” that gives tactile feedback warning you about objects in your path, be they walls, fire hydrants, or those mobile collision-makers called people.

Developed at Sweden’s Luleå University of Technology (who brought us theautonomous wheelchair), this wheelchair uses lasers that make use of thetime of flight technique, wherein “a laser pulse is sent out and a portion of the pulse is reflected from any surface encountered,” and the distance between the wheelchair and the surface is measured based on the amount of time the laser takes to return. By sending out many laser pulses from different angles, the wheelchair creates a virtual 3D map of the surrounding area, which is then relayed to the user via the haptic interface.

Right now, the laser only detects objects at specific heights, meaning that a blind wheelchair driver could be on the verge of tumbling over a cliff or crashing into an extremely short fire hydrant without any warning from the device; the team is trying to remedy this flaw by creating a 3D camera.

In addition, a traditional setback with scanning technology involves vague measurements when the laser pulse glances off surfaces angled away from the laser. That’s why sending laser pulses at different angles is useful, because “to remedy this it is often necessary to perform multiple scans from different vantage points and integrate the results.” By sending off lasers at more than one angle, you diminish the likelihood of the laser merely glancing off objects. The Swedish team hopes to fix these problems and start producing the wheelchairs for consumers in five years.

Wheelchairs aren’t alone in the moving-vehicles-with-lasers category: Recently, BMW unveiled the Left Turn Assistant, which uses lasers to scan the road ahead and alert drivers as to whether they’re about to turn into oncoming traffic.


                 It is a great work done by a PHD student and it can actually help many people  particularly the blind ones because they cannot actually see what is ahead so it’s a very good thing for them and it’s very awesome.


                 It is a thing that can absolutely change the way of living for many people and improve their way of living and it can give them  a new life because a lot of blind people who are also disabled cannot get outside of their house alone so now by this invention they can get outside and enjoy the life.







Weekly blog

hello everybody i hope you are all fine and doing great and now i am going to talk about this week this week was very tough because we had to do all of our html assignments in just two days and it,s also the holiday time so all the teachers are trying to give as much homework as possible and ok goodbye everyone and merry christmas.

Weekly blog

hello everybody i hope you are doing fine this week was very hard and also very fun because we are doing html i find it pretty interesting and it is very awesome because we can actually design our own webpage and even a website and it can actually help you as a carrer because it is a very good buisness to design web pages and websites for the big companies and i have nothing left to say ok goodbye and happy weekend.

weekly blog

Hello everybody i hope you are all alright and hello mr fernandez this week was very busy because we had to do all of our assignments and tutorials and we learned many things in it and i think that this software is a very good software and a good product and the assignment 5 is particularly very good and funny and very cool ok goodbye.

In Eye Control, A Promise To Let Your Tablet Go Hands-Free

The open-source software produced by the Gaze Group uses infrared light to track the pupils of users’ eyes, allowing them to control the cursor on a mobile or desktop computer.

Gaze Group

Forget touch screens and voice recognition — what if you could control your computer just by looking at it? Gaze-based interaction has been around for 20 years, used mainly by people with disabilities. But the technology could be available to the masses soon, allowing users to move a cursor with their eyes, or turn the pages of an e-book without lifting a finger.

In Denmark, an eye-control research group has just turned itself into a business, hoping to be part of the next wave of usability.

If you look at the big names in eye-control technology, you’ll notice that most companies are based in the U.S. or Northern Europe, places where there’s enough private wealth or government support to help people with disabilities pay for pricey specialized equipment.

“But not everyone gets it,” says usability expert Sune Alstrup Johansen, of theGaze Group at the IT University of Copenhagen. “And obviously if you look at the rest of the world, a lot of people don’t have access to these expensive eye trackers.”

Johansen, a Ph.D. student, spent years working on the question of how to make the systems cheaper.

“After a while, we figured out that probably the best way is to go for a mass-market approach,” he says, “where everybody would have this available.”

Just over a year ago, Johansen and his colleagues spun off into The Eye Tribe, a company with the goal of making it possible for all people to control mobile devices with their eyes. He explains how it works:

“You have infrared light that is projected toward your face. And the infrared light is then reflected in your pupil. And by seeing those reflections, we can pretty easily — well, not easily,” he adds with a laugh — “with our algorithms, we can easily calculate where you’re looking.”

The snag is the infrared light, which is not a standard feature on most smartphones and tablets. Johansen says that adding it wouldn’t be a huge change, as it means switching out a filter on the camera that comes on most mobile devices.

Still, it is a change — and that means convincing manufacturers that mainstream users are going to want it. And what’s more mainstream than Fruit Ninja, one of the most popular game apps in the world?


In the game, players swipe across a touch screen to slice flying fruit into pieces. In the Eye Tribe’s version, you slice and dice using only your eyes.

When I ask to try it, Javier San Agustin hands me a modified Windows 8 tablet.

“So you hold it like that, and now you need to do the calibration process,” he says. “Just follow the dot.”

I follow the dot so the computer can get to know my eyes, which sounds easy enough. But it’s weird using a sense organ as a muscle. I feel like an unpracticed superhero with lasers coming out of my eyes — which may explain why I somehow manage to fail the calibration (twice).

“Let’s try again,” San Agustin says.

Once I do pass and actually play Fruit Ninja, it’s pretty amazing. But just because what the Eye Tribe is doing is flashy, that doesn’t mean it’s a sure thing. There are plenty of other companies working on different versions of eye-control and eye-tracking technology. Some may not be as precise, or require changes in hardware.

Still, one way or another, “This will happen,” says John Paulin Hansen, who heads the research group that spawned the Eye Tribe. But he adds that it won’t happen in a vacuum.

“It’s a small part of a very big change that’s happening to the way that we interact with computers,” he says. “I hope our children will look back on us and think, ‘Oh my God, it was so hard back then to use a computer. You had to sit down in front of it all day!’ ”

For Stig Langvad, change can’t come fast enough. He’s the head of Denmark’s umbrella organization for people with disabilities. Because of a spinal cord injury, Langvad relies on voice control to use his computer, reciting commands like, “Type. Control. Enter.”

The system works fine, but it’s slow. When he needs to make a selection, Langvad brings up a nine-square grid on his screen, and then narrows in on his target by choosing the appropriate square over and over, shrinking the grid.

And then, finally, he can say, “Mouse click.”

If Langvad could just move a cursor with his eyes, he says, “It would be much easier, it would be much faster — and it would be much more silent.”

That’s not all it would be. For people with disabilities, eye-control technology becoming mainstream would bring another important change.

“Then I can go to any computer, and then I can control it and I can use it, instead of just bringing my own,” Langvad says. “So I’ll be a part of society on an equal foot, instead of being a special solution.”

He adds, “To me, it is going to change the world. And I think it’s delicious, to be a part of that process.”

Description:                                                                                                                                                        it is a product that is very astonishining and very good and it can be very helpful to the people with the disabilities and the people who cant move their hands like the  people who cant even speak and it is actually pretty cool but there is a big price to pay before you can actually use them.


it is a thing that can absolutely change the way of living for some people who cant even move their hands and the people who cant even speak and it is very expensive and only few people can buy it because it is too expensive it has also disadvantages because the people who use this will have a negative effect on their eyes well at last it has advantages that overcome its disadvantages i think it is good.

Reference: http://www.npr.org/blogs/alltechconsidered/2012/12/03/166244876/in-eye-control-a-promise-to-let-your-tablet-go-hands-free

Weekly blog

Hello every body i am sure you will be having fun with the fireworks cs3 this week was very interesting  because we did the fireworks this week and it is a very good software and  product and it can be used for many things such as  editing photos and all sorts of other fun stuff and my opinion about making our school more good technology wise well think about it that you are sitting in a math class and you are learning about geometry and shapes it can be much fun with learning if you can actually rotate  the shapes and see the actual shape and if you are in a social studies class and you are learning about the rise and fall of roman empire or any other nation it can also be  much fun if you have a tablet or an ipad and you can actually google it up right  at the moment but my last statment is about      

that there is always space for improvement no matter how good the thing is ok goodbye