Last year May, a called Leap Motion of venture company launched has a paragraph called Leap 3D of magic equipment, this paragraph movement control system than Microsoft has similar function of Kinect to small have more, but precision is is Kinect of 1000 times times, once enabled can can generated a 4 cubic feet of 3D space, this space within of finger action will was capture to, user can with its to play body sense game or other operation, currently this paragraph products is reservation in the, But have developers get the product, let us take a look on the know, @ Zhang Boning the introduction to this wonderful product.
Leap principles of Motion is what?
To see the Leap Motion sensor structure:
Leap has two cameras in Motion, you can capture images from different angles, it can simultaneously track multiple goals, including:
List of all Palm and information; and information list of all fingers; hand tools (fine, straight, longer than the finger thing, such as a pen) and list of information; all point to an object (Pointable Object), all fingers and a list of tools and information;
Leap Motion will assign them a separate ID and moving data, sports information, and recovery through algorithms Palm three-dimensional motion information in the real world.
More details see Leap Motion developer documentation: Leap Motion | Developers
Leap Motion practical experience how to?
Zhang Boning got the Dev Board of Rev 6 the ultimate listing of Rev a version prior to 7, and the final production version of the Rev 7 possibilities can be less. Packages are as follows:
The entire device is very small:
Leap Motion with a Mini USB cable connected to the computer (Mini USB cable in the box, but a shipment data cable has a problem, many developers are also known with the line the computer did not respond, another thread would be nice). Set-up so you can use the Leap of gesture Motion Visualizer in the SDK test Motion Visualizer interface in the following figure:
Motion Visualizer can Leap the sensor captures hand movements of information mapping, yellow cone is Leap view.
Leap sensor can capture these three kinds of motion: fingers (and holding) movements, movements of the Palm, the Palm ball (arc simulation of sphere with Center and RADIUS information) three. In addition, it can be generated through the relative movement of two hands moving, rotating and scaling information.
Hand movement notation (shortcut: n): iPhone 4 case bamboo
Palm ball, can open Palm size change in RADIUS:
Leap Motion provides examples for some developers, such as testing the relative displacement of the two hands, according to the relative displacement to translation, rotation, scaling, the grid, and so on.
Leap also has a feature that is in screen calibration, telekinesis with their fingers to simulate a mouse like a laser pointer movement on the screen (but not clicking now Leap for developers only test, procedure, and games):
Finally, Zhang Boning summary:
Advantages: single, two-finger control is very sensitive, “telekinesis” feature very good; cons: vulnerable to interference, especially prone to manipulation of “lost”. Therefore, advice book Leap on a wait-and-see attitude, after the official version comes out to see media reviews and then decide to buy. But with an infra-red LED in the official version, the effect should be better ~Leap Motion sensors on the OS x and Windows support is very good (Leap in Motion’s CFO before iAd Apple pipe business). For developers, you can use many programming languages (Tools) to develop applications, C++, objective-c, Java, c #, Python, such as Unity, but Unity requires a Pro license, because Unity free version does not support plugins. (Pro version of Unity to a $ 1500, cry) on Leap of Motion applications, individuals also test these days exploration, hopes to make some high quality games and applications. iPhone 4 case bamboo
Via known
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