The detector's multi-bounce reflection data is used to reconstruct the shape of objects that are visible from the position of the wall, but not from the position of the camera. The duration of each laser burst is so short that the system can gauge how far the bursts have traveled by measuring the time it takes them to reach the detector. The Conar system compares the different times at which the returning light arrives at different parts of the detector, uses multi-path analysis to crunch the data, and constructs an image of the room’s geometry. (You can watch a video lecture discussing the technology in more detail here.)
Conar's technology has initially produced recognizable 3D images of a wooden figurine and images of foam cutouts that are placed outside the femtosecond laser camera's line of sight.
Eventually, the researchers expect the technology could lead to imaging systems that help emergency responders evaluate dangerous or unknown environments, or collision avoidance systems for vehicles and vehicle navigation systems that can negotiate blind turns. Other possible applications include robot navigation systems for industrial environments and instruments that can investigate conditions in cramped spaces inside machinery with moving parts.
Laser scanning is used everywhere to define the real-world and convert it to 3D point cloud data that can be used in plant design, architectural remodeling, accident reconstruction, crime scene reconstruction, etc.
The way the technology works today, you have to set up the tripod in a few different places with targets that can be matched by the software to get a complete picture of the area. It works pretty good, but consider one setup, one scan and you're done. Amazing.
Do I understand correctly? The laser emits a light beam which scatters, then the camera 'averages' the returned photons to memorize what is there. When something new is added, the returning photons take a different time of flight and thus the shape and position of the 'new' thing is derived and displayed. Depending on the acquisition speed of the camera/computer, this would have a great usefullness in any number of internal/external building security, military field surveylance, etc.. A really neat concept.
New technology solves old problem with better resolution! Seeing beyond the electromagnetic horizon. Reminds me of over the horizon Radar popular during the Cold War era. Different wavelengths of electromagnetic spectrum but somewhat similar idea. Reflect off of the ionisphere and listen for back scatter to provide a target echo.
bob from maine, the article gives links to two videos worth watching, one short and one more detailed, on how this technology works. Military surveillance and security are definitely some apps this could be used in, and probably lots more we haven't thought of yet that this will make possible.
Yes, this reminded me of the Lytro camera as well. The Lytro camera allows setting of the range of focus with the picture data, through software, after the picture is taken. This concept allows reconstruction of laser topology reflected back into the scene. Also reminds me of the laser-based window listening devices, what will they think of next?
The 100% solar-powered airplane Solar Impulse 2 is prepping for its upcoming flight, becoming the first plane to fly around the world without using fuel. It's able to do so because of above-average performance by all of the technologies that go into it, especially materials.
As the 3D printing and overall additive manufacturing ecosystem grows, standards and guidelines from standards bodies and government organizations are increasing. Multiple players with multiple needs are also driving the role of 3DP and AM as enabling technologies for distributed manufacturing.
A growing though not-so-obvious role for 3D printing, 4D printing, and overall additive manufacturing is their use in fabricating new materials and enabling new or improved manufacturing and assembly processes. Individual engineers, OEMs, university labs, and others are reinventing the technology to suit their own needs.
For vehicles to meet the 2025 Corporate Average Fuel Economy (CAFE) standards, three things must happen: customers must look beyond the data sheet and engage materials supplier earlier, and new integrated multi-materials are needed to make step-change improvements.
3D printing, 4D printing, and various types of additive manufacturing (AM) will get even bigger in 2015. We're not talking about consumer use, which gets most of the attention, but processes and technologies that will affect how design engineers design products and how manufacturing engineers make them. For now, the biggest industries are still aerospace and medical, while automotive and architecture continue to grow.
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