Analysis of innovative thermal touch technology

One day we accidentally got a thermographic camera and had a great time in the laboratory; our R & D team has been developing a natural and intuitive interactive interactive augmented reality application through a head mounted display Way, this is the first time that only new toys are played purely.

I took that camera to measure the temperature of my coffee cup and monitor, and found that the temperature profile on my face was really interesting; I noticed that whenever I put my hand on the table, the residue left on the table The heat is clearly visible in the thermal image. A brief experiment conducted on different targets shows that this is not only a unique phenomenon that my desk has. Most objects will show a hot spot after being touched by the human hand.

The thermal imaging camera module contains a visible light lens, which can identify and track objects in the field of view; so we have an idea: the function of detecting the touch motion of the human hand through the thermal image and the detection through the general visual image The combination of measuring and tracking the touched objects will be a way to naturally interact with those objects and related digital information-especially on wearable headphones.

We have been used to finding touch solutions for technology users-now touch indeed has become the default user interface for most technologies. Wearable device manufacturers have proposed a variety of interface solutions, including voice navigation, finger detection and depth tracking of supporting devices, and even shoulder-mounted projectors and other innovative gadgets; although these program options are a good start , We still find that many of them are still lacking, and even make the average user frustrated.

What if we could make the surface of every object a touch screen? This is a new task idea given to us after we discovered the potential advantages of combining thermal imaging technology with traditional computer vision algorithms; we used a Lenovo ThinkPad tablet to build a prototype, using a The simple fixture bought by the hardware store hangs a camera module that combines thermal imaging and visible light on the tablet.

Our proof-of-concept software implementation is based on Metaio ’s augmented reality SDK, with tracking capabilities for flat and 3D objects; in addition, it can provide the function of rendering virtual objects on top of tracked targets. This is Necessary to associate virtual information to the physical surface.

The prototype of the thermal touch device created by Metaio, although costly and bulky, has led the new direction for the future hands-free wearable device interactive interface

Of course, our software does not yet have native features that support thermal imaging technology, so we must allow the Metaio SDK to support the images captured by the thermal imaging camera; the only thing missing is the touch detection algorithm, so we developed one. Then we began to look for ideal user cases and applications that can be easily displayed; after several successful field tests, we will gather together the conceptualization and practical use of this technology and filmed the following video.

The prototype of the thermal touch device created by Metaio, although costly and bulky, has led the new direction for the future hands-free wearable device interactive interface

The prototype device we built is not only cumbersome and expensive-the technology is currently not a consumer technology, but this new way of interacting with the virtual diameter has led to a clear path for wearable computers and head-mounted displays. We believe that the popularity of wearable computers is only a matter of time, but its user interface is still a challenge to be overcome. If the thermal touch interface can be made stronger, it will be an ideal solution for the transition from touch devices to hands-free devices.

In the future, we will continue to improve the strength and delay of the prototype device. We are currently studying how to make this basic solution support more advanced interactive technologies, such as touching objects with different fingers will have different effects. Perhaps the first head-mounted device with a built-in thermal imaging camera will take some time to market, but the appearance of such cameras will become smaller and the price is more reasonable; as for mobile phones that support thermal imaging, this year is expected to be Listing, this is just the beginning.

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