The biggest advantage of structured light is the highest depth accuracy, which can theoretically reach the micron level, and the ToF sensor can reach the millimeter level, which is sufficient even for face payment. The high accuracy of structured light also requires complex calibration, while the ToF sensor does not need.
ToF camera is a powerful solution that provides high depth accuracy for applications requiring high quality 3D information. There are many factors that need to be considered in order to ensure optimal performance levels. Factors such as modulation frequency, demodulation contrast
Advantage of ToF sensor technology is that its recognition distance is farther than structured light (about 0.4 meters to 5 meters), its anti-interference is strong, and each point can directly provide complete depth information, and the transmitted data is already available
At present, the mainstream application technology of 3D sensing is structured light and ToF. The two sensing technologies determine their different application fields in principle. We compare and analyze the application fields applicable to the two technologies in terms of measuring distance, depth accuracy, algorithm complexity, scanning and response speed, various environmental adaptability and hardware cost.
Since door locks are often installed in corridors, some users worry about whether the face unlocking effect will be affected in weak light or dark environments. If you use a 3D ToF camera, you will not worry about the problem of being unable to recognize the dark environment
In recent years, with the widespread application of tof camera in smartphones, finance and other fields, people have a full understanding of tof camera technology, and it has also accelerated its application in other fields. Among them, tof camera has become one of the main recognition technologies for smart door locks.
When the smart door lock uses face recognition to unlock, it obtains face information through the 3D ToF camera, and combines the measurement method of the tof camera module to perform 3D discrimination and face comparison on the captured face.
ToF camera face recognition technology emits infrared light through the sensor, and the infrared light is reflected back to the sensor from the surface of the object.
3D sensing escapes the limitation of the 2D plane and enables the "eyes" of the machine to obtain more information. With the development of technologies such as autonomous driving and intelligent robots, 3D sensing has increasingly become a key technology. 3D sensing has a wide range of applications, from security and inspection, to environmental perception of autonomous vehicles, robots, etc., to ToF cameras of mobile phones,
As one of the solutions for 3D sensing, ToF camera can be applied not only to 3D face recognition, 3D modeling, etc., but also to environment reconstruction, gesture recognition, and somatosensory due to its advantages of long measurement and recognition distance and strong anti-interference. In games, AR/VR and more scenes.
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