Gesture interactive "fluttering"?3D TOF is not worth the value

The popularity is high to the official website "melting", and the ideal L9 will be frequently searched. Two Snapdragon 8155 chips in the cockpit, the "warm man" style five -screen layout, the rear entertainment screen also supports gesture control, which can be described as three -dimensional.

According to the official statement, the 3D TOF sensor in the car cooperates with the fusion algorithm, plus 6 array microphones, basically how to communicate naturally. But whether it is to cancel the dashboard or enable gesture interaction, the ideal L9 is not controversial.

Friends who have read the content of AUTOLAB before: "Looking at 500,000 ideal L9 with the standard of choosing a husband" can probably understand that this large SUV that has just been listed has gesture interaction in accuracy and sensitivity. Essence

Therefore, this article will only talk about the gesture interaction of the vehicle and the implementation of related technologies.

Experience faction says that the pragmatism faction shakes his head

Gesture control is definitely a metaphysics. In the Xianxia drama, it may be that the heroine's finger waved, and the rocks on the top of the mountain flew out immediately, and the enemy's life door was split. In real life, gesture interaction is more to solve the needs of "when you are inconvenient."

Is it useful for gesture control?

The supporters are happy to try, and their mentality is relatively tolerant. These people are often the fastest wave of people who accept new things and new technologies; they shake their heads, saying it is a pseudo -demand.

By this question, I asked two friends, one hovering on the edge of the car, and one with a smart car. The friend who planned to buy a car said that the gesture induction in the car is the function of icing on the cake, but he may not be able to use it; friends who have a car are bluntly "so lazy?"

Theoretically, the progress of science and technology is to make people lazy. But the two also gave me a very close answer, "gesture sense is easy to wake up."

I didn't plan to use a feature, but it opened quietly during your dancing. Take a step back. The premise of controlling the vehicle across the air gesture is that you must first master a few sets of system preset gestures, and it must be very standard to use.

On the other hand, the internal voice control of the car has been unanimously recognized, and the voice assistant that can be summoned and responded at any time is considered a sufficient condition for advanced rugs. It is not unreasonable to build their own voice assistants.

Back to the initial topic, the ideal L9's back row entertainment screen. Due to the inconvenient position of the location, gesture control does have higher practicality.

But can't the voice assistant control? It is actually possible to control. Try may mean greater success.

Is it Dummei or a virtual name?

The ideal L9's gesture interaction makes 3D TOF a small fire, just like Apple uses LIDAR (DTOF) for the first time on the iPhone12 series in 2020. If you trace the history of TOF in the car, it will probably start from 2015.

In 2015, BMW applied TOF sensors in the 7 Series (G11/G12) central control zone for gesture recognition

Today, from the BMW 7 Series, Mercedes-Benz S-Class, Ford EVOS, Volkswagen ID.6X, to the domestic Chery 5X, Xiaopeng G3, and Changan UNI-K, they all used in the car to interact with gestures. Most of the operations are limited to the mid -control area, which can connect/refuse the phone, adjust the volume, start/end navigation. Some models can also control the sunroof, sunshade, and cockpit lighting through gestures.

It seems to be very useful, but there are many slots. Especially in the accuracy and consistency (comparison with the preset gesture), the gesture interaction in the car is far from the ideal state, and it can only be regarded as a younger brother in front of the voice assistant.

Compared with passive double -eyed visual recognition, the technical routes currently used for gesture recognition include TOF, structured light, and millimeter wave radar. The optical and radar solutions seem to always be a century -old choice question.

Due to high resolution and accuracy, the face recognition is widely used for the front camera of the mobile phone; the millimeter wave radar is supplemented as a laser radar, which is essential for realizing autonomous driving. application.

TOF (Time of Flight), as the obstacle avoidance component of intelligent robots, has become a popular gesture interaction option on the car. Compared with structural light, TOF is simpler and faster due to the speed and flight time of known light and flight time, and the response speed is faster; compared with millimeter wave radar, TOF recognition is more accurate.

Even so, in front of TOF, one side is performance controversy, and it is difficult to get mass production on the other.

A domestic CMOS image sensor chip (TOF uses CIS as a optical unit) supplier told the author that TOF's solution is not completely mature. In particular, DTOF, which has better recognition capabilities, still has problems such as high delay and low resolution on the car.

If only as a gesture recognition, TOF may not have high requirements for resolution, but usually TOF needs to obtain multiple images to restore deep information, delay about 40-50 milliseconds, which leads to more applications that do not involve vehicle safety. Function.

The limitations of the application scenario make TOF look too ribs. More importantly, the cost of TOF hardware is relatively high, and the underlying imaging chip has higher technical requirements, mainly provided by foreign businessmen such as Ansonami, Hawie and Sony. Therefore, the TOF price is still in the stage of "restrictions from quantitative".

The key is that the gesture interaction in the car is still a "just needed" application, allowing TOF to show his fists, and then quickly penetrate.This is also a problem on the mobile phone. Apple and Huawei provided users with gesture interaction early, but the results were quite unsatisfactory.From the perspective of consumers, the establishment of a unified standard in the industry is imminent. After all, there are tens of millions of gestures, and you ca n’t learn. There are so many brands. If you have the same functions of the same gesture, you can easily cause inconvenience to change your car.

Just like all new technologies, if there is still surplus value of squeezing foam, you can continue to grow.Before that, TOF must find its own positioning on the car. It is not optional, but it must not be replaced.

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