Japan's NHK brings Google Earth-like graphics to live TV

The system, useful for news coverage, marries computer mapping with GPS data

Engineers at Japanese public broadcaster NHK (Nippon Hoso Kyokai) have developed a system that can overlay Google Earth-like labels over live TV images from helicopters.

Called SkyMap, the system relies on an additional datastream sent from the helicopter with the live video. The data includes the current GPS position of the helicopter, the direction in which the camera is facing, and it's zoom level.

The data coming from the helicopter is processed by computer mapping software, which then generates a virtual map giving the same view as the real camera. The mapping software is already programmed to place labels over landmarks on the map, just as Google Earth does over its images.

NHK takes the label layer from the map image and overlays that on the live video image. (A video showing the system in-use and other new broadcasting technologies from NHK is available on YouTube.)

If the system is precise enough, they should match up.

In a demonstration of the system at the broadcaster's headquarters on Monday, the system worked well. The demo fed recorded images to the system, but the mapping overlay was being done live in real time over the images.

Slight delays or inaccuracies in the GPS data meant the labels sometimes strayed, but usually only by a few meters from the intended location.

NHK expects SkyMap to be useful during live news, especially when covering earthquakes.

The broadcaster frequently relies on helicopter images during immediate broadcasting after quakes, and the location shown in the live video is sometimes not immediately obvious.

The system was demonstrated alongside other recent innovations by the broadcaster.

One, called Twinscam, provides a new view of watersports like synchronized swimming.

Traditional coverage of the sport switches between cameras above and underwater. It's not possible to use a single camera to capture all the action because of the different way light refracts in air and water.

With Twinscam two cameras, one underwater and one above the water, have their zoom and focus synchronized to produce a single, realistic image. The result is an image that perfectly matches the above and underwater shots for a complete view of the performance.

NHK used the system at last year's Japan Open synchronized swimming championship and hopes it will be used at next year's London Olympics.

It also showed a Mitsubishi iMiev electric vehicle equipped for live broadcasting. The car has all the equipment needed to support and switch up to four video sources, and send back a live signal. The car's main battery provides a 100-kilometer range and a second battery can power the equipment for up to 2 hours.

Calling it cramped might be an understatement, but the car will allow NHK to broadcast from residential areas where trucks can't go because of noise or narrow streets.

Martyn Williams covers Japan and general technology breaking news for The IDG News Service. Follow Martyn on Twitter at @martyn_williams. Martyn's e-mail address is martyn_williams@idg.com

Join the newsletter!

Error: Please check your email address.
Rocket to Success - Your 10 Tips for Smarter ERP System Selection

Tags Nippon Hoso Kyokaiconsumer electronics

Keep up with the latest tech news, reviews and previews by subscribing to the Good Gear Guide newsletter.

Martyn Williams

IDG News Service
Show Comments

Cool Tech

SanDisk MicroSDXC™ for Nintendo® Switch™

Learn more >

Breitling Superocean Heritage Chronographe 44

Learn more >

Toys for Boys

Family Friendly

Panasonic 4K UHD Blu-Ray Player and Full HD Recorder with Netflix - UBT1GL-K

Learn more >

Stocking Stuffer

Razer DeathAdder Expert Ergonomic Gaming Mouse

Learn more >

Christmas Gift Guide

Click for more ›

Most Popular Reviews

Latest Articles

Resources

PCW Evaluation Team

Ben Ramsden

Sharp PN-40TC1 Huddle Board

Brainstorming, innovation, problem solving, and negotiation have all become much more productive and valuable if people can easily collaborate in real time with minimal friction.

Sarah Ieroianni

Brother QL-820NWB Professional Label Printer

The print quality also does not disappoint, it’s clear, bold, doesn’t smudge and the text is perfectly sized.

Ratchada Dunn

Sharp PN-40TC1 Huddle Board

The Huddle Board’s built in program; Sharp Touch Viewing software allows us to easily manipulate and edit our documents (jpegs and PDFs) all at the same time on the dashboard.

George Khoury

Sharp PN-40TC1 Huddle Board

The biggest perks for me would be that it comes with easy to use and comprehensive programs that make the collaboration process a whole lot more intuitive and organic

David Coyle

Brother PocketJet PJ-773 A4 Portable Thermal Printer

I rate the printer as a 5 out of 5 stars as it has been able to fit seamlessly into my busy and mobile lifestyle.

Kurt Hegetschweiler

Brother PocketJet PJ-773 A4 Portable Thermal Printer

It’s perfect for mobile workers. Just take it out — it’s small enough to sit anywhere — turn it on, load a sheet of paper, and start printing.

Featured Content

Product Launch Showcase

Latest Jobs

Don’t have an account? Sign up here

Don't have an account? Sign up now

Forgot password?