Global Technology - August 2017

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People communicate almost as much with the movement of our bodies as we do with our voices.  But today’s computers are, more or less, blind to it. “

Now researchers at Carnegie Mellon University’s Robotics Institute have enabled a computer to understand the body poses and movements of multiple people from video in real time, including, for the first time, the pose individual’s fingers.

This new method was developed with the help of the CMU’s Panoptic Studio, a two-story dome embedded with 500 video cameras.  The insights gained from experiments in that facility now make it possible to detect the pose of a group of people using a single camera and a laptop computer.

These methods for tracking 2D human form and motion to open up new ways for people and machines to interact with each other, and for people to use machines to better understand the world around them. The ability to recognize hand poses, for instance, will make it possible for people to interact with computers in new and more natural ways, such as communicating with computers simply by pointing at things.

Tracking multiple people in real time, particularly in social situations where they may be in contact with each other, presents number of challenges. Simply using programs that track the pose of an individual does not work well when applied to each individual in a group, particularly when that group gets large.  Sheikh and his colleagues took a bottom-up approach, which first localizes all the body parts in a scene — arms, legs, faces, etc. — and then associates those parts with particular individuals.

Detecting the nuances of nonverbal communication between individuals will allow robots to serve in social spaces, allowing robots to perceive what people around them are doing, what moods they are in and whether they can be interrupted.

For instance, a self-driving car could get an early warning that a pedestrian is about to step into the street by monitoring body language.

Enabling machines to understand human behavior could also enable new approaches to behavioral diagnosis and rehabilitation for conditions such as autism, dyslexia and depression.

In sports analytics, real-time pose detection will make it possible for...

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