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July 2008

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High-Speed Photography to the Attosecond

Laser cameras are upping the ante on Harold Edgerton's bulett through the laying card of old:

"Capturing images of fleeting events—a horse's gallop, a bullet's impact, an electron's escape—is easy if you have the right equipment. Faster camera shutters used to be enough, but recently lasers have let physicists break the femto- and attosecond barriers, compressing the temporal resolution of images down to the time it takes light to cross a hydrogen atom."

[You'll find images at: Wired]

zZz is playing: Grip

A favorite self-reflexive online movie:

Video Camera Vest Transmits To Home Office

Quote1-1A UK company has launched a 'wearable CCTV' jacket which uses 3G cellular to transmit video images back to a central office. The company says that its WCCTV 3G Covert Backpack is ideal for agents who need evidential quality recording of suspects on the move. The backpack houses all of Wireless CCTV's body-worn technology in a covert vest.jpgpackage.

The central unit of the body-worn equipment uses a robust Compact Flash card for digital, evidential quality recording of agents' video and audio footage. Using 3G mobile phone technology, images and sound can be remotely monitored by a supervisor, who can evaluate the situation in real-time and despatch assistance or advise the agent on possible courses of action.

Wireless CCTV has also integrated an optional GPS receiver which tracks and maps the exact location of agents in the field. The precise position of multiple agents, combined with their respective live video and audio feeds, allows supervisors to assess a situation in real-time and make decisions accordingly.

A Panic Alarm button allows agents to notify the supervisor that they need immediate assistance. At the end of an operation, data can easily be backed up for evidential purposes, reducing the need for paperwork."

[Source: cellular-news]

Critter-Vision

I wrote a post quite a while ago about Sam Waterson when he visited Carleton for a talk. His critter-vision cameras are still in the news today with this piece from CNN:

Quote1-1Cameras as tiny as half an ounce are mounted on animals or plants. There's no specific length for the feature; it lasts until the camera falls off. The result is a unique perspective applauded by armchair naturalists in which the stars of the film are also the videographers.

'If people can see things from the animal and plant perspective, they are far less likely to harm them or their habitat, so that's how I present it,' Easterson said.

Earlier in his career as a video artist, Easterson put small cameras in strange places -- also with the goal of getting a different perspective. He put them in popcorn poppers and washers and dryers to show what those domestic appliances looked like from the inside out. Seeing through sheep's eyes

But equipping a small flock of sheep with cameras in 1998 changed everything for Easterson, he said. The Walker Art Center in Minneapolis, Minnesota, commissioned him to tape some sheep as they 'mowed the lawn' in a park. Easterson said he learned a lot about his new craft and the nature of animals.

'The first thing I realized was how intelligent and aware they are,' he said. 'The project changed everything in terms of respect.

'I was shocked to realize all the other animals in the flock could tell that this one sheep with the camera had been 'altered' in some way. She kept trying to enter, and they kept treating her as an outcast. I also learned sheep can run very fast and fences are not as sturdy as you think.'

That project was called 'A Sheep in Wolf's Clothing.'

Easterson takes small cameras designed for law enforcement and surveillance and modifies them for the animals or plants he's aiming to study. He changes them mostly by taking most of the weight off. For most smaller animals, the video usually is beamed wirelessly for recording.

Most of his work now comes from museums, nature centers and art centers eager to give the public an animal's-eye view. The artist said he's turned down requests from some broadcasters anxious to get gritty or confrontational pictures for 'reality'-type shows.

While not a scientist, Easterson works with researchers by offering details that they may have never seen.

'There really is data to see in these pictures,' he said. 'Take the armadillo. You can listen to its breathing patterns. You can watch closely the rotation of its ears as it encounters new things.'

While networks such as Animal Planet may focus on exotic international shoots, Easterson tries to include an animal native to the area where he's presenting an exhibit. In Florida, he equipped an alligator with the cameras, and in the Southwest, he chose a desert tarantula. A tumble weed's perspective

While it's easy to see the intrigue of animal behavior from an animal's perspective, it could be a stretch for some to consider a plant's view.

'It's maybe a funny idea to think that plants have perception, but I think they do,' Easterson said.

He said his most challenging plant shoot was driving along the desert in a rental car trying to keep up with a tumbling tumbleweed.

Easterson said no animals have been hurt working as videographers. And he's worked with bioethics groups and telemetry experts who are experienced in tracking animals with radio collars.

'I really would like to be on the radar screen, to improve my techniques,' he said.

In the long term, Easterson said he hopes to create a library of hundreds of animals, from the unique 'first animal' perspective." (Via CNN.)

Mobile Phone Reads For The Blind

Quote1-1

Chris Danielsen fidgets with the cell phone, holding it over a $20 bill.

"Detecting orientation, processing U.S. currency image," the phone says in a flat monotone before Danielsen snaps a photo. A few seconds later, the phone says, "Twenty dollars."

[...] The Nokia cell phone is loaded with software that turns text on photographed documents into speech [...] it allows users to read anything that is photographed, whether it's a restaurant menu, a phone book or a fax. [...]

Ray Kurzweil, who developed the first device that could convert text into audio in the 1970s and the current NFB device, said portability is only the first step. Future versions of the device will recognize faces, identify rooms and translate text from other languages for the blind and the sighted.

The inventor plans to begin marketing the cell phone in February through K-NFB Reading Technology. The software will cost $1,595 and the cell phone is expected to cost about $500, Kurzweil said. [...] There are about 10 million blind and visually impaired people in the U.S., a number that is expected to double in the next 30 years as baby boomers age.

Kurzweil said those with vision problems are not the only ones expected to benefit from the technology. Dyslexics, for example, are expected to be among the users of the current device because of its ability to highlight each word as it's read aloud, helping them cope with their disability, which affects the ability to read. The highlighting function can also help them improve their reading skills, he said." [Source]

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