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May 23, 2019
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Global Positioning System

Reality Check: The marvel of computer vision technology in today’s camera-based AR systems

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British science fiction writer, Sir Arther C. Clark, once said, “Any sufficiently advanced technology is indistinguishable from magic.”

Augmented reality has the potential to instill awe and wonder in us just as magic would. For the very first time in the history of computing, we now have the ability to blur the line between the physical world and the virtual world. AR promises to bring forth the dawn of a new creative economy, where digital media can be brought to life and given the ability to interact with the real world.

AR experiences can seem magical but what exactly is happening behind the curtain? To answer this, we must look at the three basic foundations of a camera-based AR system like our smartphone.

  1. How do computers know where it is in the world? (Localization + Mapping)
  2. How do computers understand what the world looks like? (Geometry)
  3. How do computers understand the world as we do? (Semantics)

Part 1: How do computers know where it is in the world? (Localization)

Mars Rover Curiosity taking a selfie on Mars. Source: https://www.nasa.gov/jpl/msl/pia19808/looking-up-at-mars-rover-curiosity-in-buckskin-selfie/

When NASA scientists put the rover onto Mars, they needed a way for the robot to navigate itself on a different planet without the use of a global positioning system (GPS). They came up with a technique called Visual Inertial Odometry (VIO) to track the rover’s movement over time without GPS. This is the same technique that our smartphones use to track their spatial position and orientation.

A VIO system is made out of two parts.

News Source = techcrunch.com

Gear for making outdoor fitness more enjoyable

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Editor’s note: This post was done in partnership with Wirecutter. When readers choose to buy Wirecutter’s independently chosen editorial picks, Wirecutter and TechCrunch earn affiliate commissions.     

Exercising outdoors comes with space, terrain and, if you’re lucky, a nice breeze that you don’t get in a gym. While fitness fanatics care most about completing a good workout, having the right gear to help with keeping track of progress — and getting on with your day when you’re done — makes a big difference.

We’ve gathered some of our favorite fitness wearables, headphones and accessories that improve and make outdoor workout routines more enjoyable.

Running headphones: Plantronics BackBeat Fit

We’ve tested 31 pairs of running headphones and for two years the Plantronics BackBeat Fit has remained our top recommendation. The ergonomics and comfort that the BackBeat Fit offer is impressive and they’re built to combat sweat, dust and rain. The cable that connects the earbuds is accommodating for heads of all sizes and it won’t bounce around or be an annoyance while you work out. Jogging at night or in a busy neighborhood will be a bit safer and easier to navigate as the BackBeat Fit has unsealed earbuds that are designed to allow you to hear your surroundings.

Everything I fit into my Arkel Bug for a day of working away from home. (Photo: Eve O’Neill)

Backpack pannier: Arkel Bug Pannier Backpack

Bike riding is a form of exercise that’s enjoyable for many. A bike is also a convenient mode of transportation, and equipping it with gear like a bike lock, rear rack and pannier can make heading out on the trail even more worthwhile. If in-between or after your ride you’d prefer to run errands, hang out or work, we recommend carrying your belongings in the Arkel Bug Pannier Backpack.

It’s spacious and has mesh material that repels water. We like that it’s durable enough to hold heavier items and it has a deep back pocket that’s big enough for a road or urban style helmet.                                                                                                                 

The Forerunner 235 (front) is thinner and sits more evenly on your wrist than its predecessor, the Forerunner 225.

GPS Running Watch: Garmin Forerunner 235

The ease of operating the Garmin Forerunner 235 makes it a great GPS running watch for beginners. Its optional apps and ability to track advanced metrics makes it great for experienced runners. You’ll be able to use data to create and follow customized workouts, as well as review details about intensity and volume.

The FR 235 delivers heart-rate tracking without the use of a chest strap and it isn’t as bulky as previous generations. Its Auto Pause feature helps with accurately tracking pace and running data when you make stops (i.e. at an intersection) during runs.

The Garmin Vivosport is the most versatile and accurate tracker we’ve found. (Photo: Michael Hession)

Fitness tracker: Garmin Vivosport

For a simple rundown of your heart rate, the number of steps you’ve taken and the distance you’ve traveled, a fitness tracker will do the trick. Our top pick, the Garmin Vivosport, has optional GPS tracking capabilities, accurate stats and overall solid performance that places it above a standard fitness tracker.

If keeping your phone on you for listening to music is a must, you can use the Vivosport to control playback and receive notifications. It measures stress levels, tracks sleep and automatically detects activity. When you’re lifting weights without a buddy, its strength-training mode can be enabled to do rep counting for you.

Photo: Kyle Fitzgerald

Water bottle: Klean Kanteen Classic 27-ounce stainless-steel bottle with 3.0 Sport Cap

Whether your workout consists of high-intensity cardio or a casual walk in the park, it’s important to stay hydrated. Bringing along a light, durable water bottle means you won’t have to find a place to grab a drink and you’ll have a handy go-to when you need a refresher.

The Klean Kanteen Classic 27-Ounce Stainless Steel Bottle with 3.0 Sport Cap is our top pick for a steel water bottle because it’s easy to clean, has swappable caps and, more importantly, less than favorable tastes and smells don’t linger around. Its 1¾-inch mouth is big enough to fit ice cubes but not so big that water will spill on your new shoes if you take a sip while running.

This guide may have been updated by WirecutterNote from Wirecutter: When readers choose to buy our independently chosen editorial picks, we may earn affiliate commissions that support our work.

News Source = techcrunch.com

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