The vivo NEX dual-screen version achieves zero-light facial recognition, thanks to ADI ToF technology

In fact, at the 2018 Shanghai World Mobile Communications Conference half a year ago, vivo proposed the ToF 3D super sensing technology. Half a year later, the technology was officially launched, enabling the NEX dual-screen version to achieve breakthrough ToF zero-light face recognition and easy unlocking 24 hours a day.

The vivo NEX dual-screen version can more accurately identify a large number of three-dimensional features on the user's face through the ToF infrared depth-of-field lens. Its security is far superior to that of ordinary Android phones. It can not only unlock the phone, but also realize "face-swiping" payment. Currently, the zero-light facial recognition of the NEX dual-screen has successfully supported the payment function of Alipay.

The addition of the ToF camera also provides a new way to take 3D beautification selfies. The vivo NEX Dual Screen Edition has a new "Rejuvenation Camera" function in the camera. This function can achieve a 3D face-pinching effect through 3D facial modeling, and can finely adjust the face shape, making it a selfie magic tool. In addition, the ToF camera also supports a 3D measuring instrument function, which can measure the size of objects, providing more convenience for users' daily use.

As a partner of the NEX dual-screen version's ToF 3D super-sensing technology, ADI's ToF technology can sense 300,000 effective depth information points - 10 times that of 3D structured light technology, and the baseline of the ToF module is almost zero, a significant improvement over the 25mm of structured light technology.

ToF is the abbreviation of Time of Flight, also known as time-of-flight 3D imaging. The distance measurement principle of ADI's ToF solution is to continuously send high-precision light pulses to the target, and then use an area array sensor that supports narrow pulse global exposure to receive the returned light. The distance information to the target object is obtained by detecting the round-trip time of the light pulse. The brightness image of the ToF camera can be quickly connected through the model.

▲ Schematic diagram of ToF technology

Smart car: In-car driver monitoring (DMS) and in-car gesture recognition

In the past, most automatic doors used the infrared reflection principle, which made it difficult to accurately manage the free entry and exit of animals. In response to this, ADI's ToF 3D stereoscopic image detection technology has high depth information resolution, up to VGA level. In addition to being able to identify and distinguish the relative position and distance of people and objects in the space, it can also prevent non-humans (animals) from entering when applied to crowd detection.

It is not difficult to count the flow of people in shopping malls now, but how to effectively use imaging technology to accurately distinguish the height and weight of people entering and leaving, and at the same time, the error of entry and exit time and height is less than 1%, which is a considerable technical threshold. ADI's ToF solution is different from traditional 3D traffic flow solutions, most of which require the installation of at least two stereo cameras. ADI's solution only requires a ToF camera lens holder, which is installed above the door frame and has no installation height limit.

▲ ToF applied to 3D crowd counting solution scenario virtual map

As Industry 4.0 becomes a new trend in the industry, more and more factories are actively introducing automated production lines, collaborative robots, and AGV unmanned transport vehicles. However, although machines replace manpower, it does not mean that industrial safety issues can be ignored. ADI specifically proposed the application of ToF in electronic fences. The ADI ToF electronic fence safety protection solution can be applied to many robot arm occasions. Once someone approaches the dangerous area, the machine will stop immediately and resume work after the situation is resolved.

▲This solution applies ADI ToF technology to the robotic arm. Once it senses that someone is approaching a dangerous area, the robotic arm will stop immediately and resume work after the situation is resolved.

After reading so many ToF-related solutions, have you been inspired to innovate? At the upcoming CES 2019, ADI will bring a variety of ToF demonstrations to the exhibition area, such as allowing everyone to experience multiple ToF systems running in the same environment, and each camera can operate without interfering with each other. Welcome to continue to pay attention to CES 2019 and pay attention to how ADI's ToF technology will be used for AR, multiplayer games, or any other applications that require multiple ToF cameras to run in the same environment.