HDMI Video Encoder and Streamer

The Teradek Vidiu is a compact video encoder and streamer.

VidiU streams over dual band MIMO WiFi, Ethernet, or via a single 3G/4G USB modem. For events that require you to be completely wireless, VidiU’s rechargeable Li-Ion battery lets you roam cable-free for up to 60 minutes.

It accepts HDMI video input and streams at resolutions up to 1080p. VidiU encodes video in real-time using H.264 compression and AAC audio at up to 5Mbps. Embedded HD audio, headphone output, and a mic/line input are supported.

vidiu

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Gesture Recognition without a Camera

allsee

Researchers at the University of Washington have developed AllSee the prototype of a hand gesture recognition system based on measuring changes in the ubiquitous electromagnetic field generated by wifi, tv stations, mobile phones etc. This allows for a low power gesture recognition solution that may even operate when integrated in a cell phone that you’ve put in your pocket.

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WiFi Based Visitor Tracking

On re:publica 2013 the Berlin based german data designers from OpenDataCity created a wifi tracking network with 100 Access Points that allowed them to visualize the movements of about 6,700 different electronic devices during the conference.

The application called re:log is a dynamic map of the conference location that shows the approximate locations of the devices when they were connected to the local WiFi hotspots. An interactive timeline underneath allows to explore the dynamic changes over time, while a rectangular area can be drawn to more specifically highlight and follow a smaller amount of dots.

The visualization was based on tracking the MAC addresses of the devices according to the WiFi hotspot they were connected to. This data, which can be downloaded, was fully anonymized, yet the authors mention their desire to allow people to look up their own MAC address in the future.

I suspect the solution used is based on MagicMap a free Wifi/Bluetooth tracking architecture developed at the Humboldt-University Berlin. Their Wiki has some more information.

relog-app

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Indoor Location Systems

WiFi based

  1. WiFiSLAM aquired by Apple: Apple acquires Wifislam
  2. Navizon
  3. Redpin (Open Source)
  4. infsoft

WiFi & Bluetooth based

  1. MagicMaps

Ultrasound based

  1. Shopkick

Ultrasound + RF based

  1. Cricket

Magnetic anomaly-based

  1. Indoor Atlas

RFID (active) based

  1. OpenBeacon (Open Source)

Blog entry on passive solutions. The industry term for this is RTLS (Real time location system): Passive RFID providing RTLS Real-or-hype

Paper on “Decimeter-Level Localization with a Single WiFi Access Point

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