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Samsung Galaxy Note 9 Gets A New Variant

Samsung also launched a special programme in which the company purchases used Galaxy products from buyers of the Galaxy Note 9.

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Samsung files new patent application for 3D displays.

Samsung Electronics Co. plans to start sales of a silver-coloured Galaxy Note 9 as early as this week, industry sources said on Tuesday, apparently to promote the device amid the launch of new iPhones and other rival products.

The new colour adds to the existing portfolio of blue, black, purple and copper variants. The silver edition will also be released in the US, Yonhap news agency reported.

Samsung Galaxy note 9
The Samsung galaxy note 9. Flickr

Samsung has not yet announced the exact date for release in South Korea.

Industry watchers said the new version seems to be aimed at competing with LG Electronics Inc.’s V40 ThinQ, which will be introduced this week, along with Apple Inc.’s latest iPhone models.

In South Korea, Samsung also launched a special programme in which the company purchases used Galaxy products from buyers of the Galaxy Note 9.

Also Read: Samsung Brings Its First Smartphone With Triple Camera in India

The used products must be operational but trading in them can reduce the cost of the latest phablet. (IANS)

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Researchers Develop System That Can Locate Shooters Using Smartphone Video

Specifically, the system looks at the time delay between the crack caused by a supersonic bullet's shock wave and the muzzle blast, which travels at the speed of sound

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By using Video from three or more smartphones, the direction from which the shots were fired -- and the shooter's location -- can be calculated based on the differences in how long it takes the muzzle blast to reach each camera. Pixabay

Researchers have developed a system that can accurately locate a shooter based on Video recordings from as few as three smartphones.

The system, called Video Event Reconstruction and Analysis (VERA), won’t necessarily replace the commercial microphone arrays for locating shooters that public safety officials already use, although it may be a useful supplement for public safety when commercial arrays aren’t available.

“One key motivation for assembling VERA was to create a tool that could be used by human rights workers and journalists who investigate war crimes, terrorist acts and human rights violations,” study researcher Alexander Hauptmann from Carnegie Mellon University in the US.

When demonstrated using three video recordings from the 2017 mass shooting in Las Vegas that left 58 people dead and hundreds wounded, the system correctly estimated the shooter’s actual location — the north wing of the Mandalay Bay hotel.

The estimate was based on three gunshots fired within the first minute of what would be a prolonged massacre.

VERA uses machine learning techniques to synchronise the video feeds and calculate the position of each camera based on what that camera is seeing.

“But it’s the audio from the video feeds that’s pivotal in localising the source of the gunshots,” Hauptmann said.

Specifically, the system looks at the time delay between the crack caused by a supersonic bullet’s shock wave and the muzzle blast, which travels at the speed of sound.

It also uses audio to identify the type of gun used, which determines bullet speed.

VERA can then calculate the shooter’s distance from the smartphone.

“When we began, we didn’t think you could detect the crack with a smartphone because it’s really short,” Hauptmann said.

“But it turns out today’s cell phone microphones are pretty good,” Hauptmann added.

Video
Researchers have developed a system that can accurately locate a shooter based on Video recordings from as few as three smartphones. Pixabay

By using video from three or more smartphones, the direction from which the shots were fired — and the shooter’s location — can be calculated based on the differences in how long it takes the muzzle blast to reach each camera.

VERA is not limited to detecting gunshots.

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“It is an event analysis system that can be used to locate a variety of other sounds relevant to human rights and war crimes investigations,” Hauptmann said.

The researchers presented VERA and released it as open-source code at the Association for Computing Machinery’s International Conference on Multimedia in Nice, France. (IANS)