The cause of the accident is simple.
The university considered that there were many people coming today, so it opened many side doors that were usually closed to facilitate guests' access and parking.
The unmanned experimental vehicle somehow followed the other cars in, and then ran all the way to the playground, using the track as a road, after two laps.
The principle set in the program is to randomly select a safe location to end the cycle after multiple rounds of circles.
It recognized the huge white curtain as an open space without obstacles and rushed out of the runway. Such a ridiculous "tragedy" occurred.
But Dong Qingjun discovered a big bug: This car has more than a dozen cameras on the front, rear, left, and right, as well as seven or eight radars, but it can't recognize such a large area of white objects? ! !
Dong Qingjun and the IT department took apart the system and identified white objects of various sizes. They found that as long as they were very large and blocked the surrounding reference objects, not only white but also light gray objects could not be recognized.
They thought about it and concluded that the camera is not as sensitive to color as the human eye and cannot distinguish subtle differences.
And the so-called color is also the definition of visible light in a certain wavelength band by humans.
For computers, there are only wavelength differences, not color types.
If the colors of natural objects are black and white, they can be divided into 0-255 levels from white to black.
Most objects are a level 18 light gray.
For example, highways and gray runways have lower gray levels, which means the colors are lighter and the features of the objects are less obvious.
Just looking from the direction of the unmanned vehicle, the curtain blocked everything else that day, leaving only the runways on both sides.
For driverless vision solutions, the static gray runway causes great interference in identifying the static huge white curtain.
The driverless car assumed that it was an uninhabited flat area and accelerated directly over it.
Li Wenjun attached great importance to this issue and asked Dong Qingjun not to allow the car to be used on the road again until the problem was solved. After improvement, it is necessary to identify white or light-colored large-area objects many times in the test track without any problems.
Because this BUG is not resolved, the rear end of a large truck will not be recognized in the actual application stage.
If you rear-end a large truck when you see it, who would dare to buy it?
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On the day Susan arrived, Li Wenjun ordered Dong Qingjun to lock the unmanned car in the garage and not even go to the test track.
Everyone said that Li Wenjun was afraid that autonomous cars would cause trouble. After all, according to regular procedures, Li Wenjun had to take foreign guests for a tour of the "Wenjun New Town".
It was okay for Dong Qingjun to be embarrassed at home, but he could not be allowed to be embarrassed in front of foreign guests.
Dong Qingjun was very proud: "This shows that our technology is high-tech. Director Li is so nervous because he is afraid that others will peek into our technology."
Everyone rolled their eyes: Haha, as long as you are happy.
Li Wenjun called Yang Shouzhuo and three others to listen.
Susan also brought four people with her. According to her introduction, these four people were her secretary, the professional manager of the Kurt family and two technicians.
In fact, Susan sent the framework of the discussion half a month in advance, and Li Wenjun and Yang Shouzhuo also studied it.
To sum up, Susan wants to open a textile factory and a pharmaceutical factory in China with Li Wenjun.
The fabrics produced by the textile factory of "Wenjun Industrial" are still top-notch domestically, but they are nothing if taken internationally.
High-end pharmaceuticals are a blank for "Wenjun Industrial", so no matter how you look at it, it feels like Susan is playing into her favour.
Showing courtesy for nothing is either cheating or stealing.
Moreover, in Yang Shouzhuo's eyes, Susan definitely belonged to the enemy's side.
An old fox like Li Wenjun is naturally very wary.
Therefore, when he sat at the conference table, the first thing he asked was: "May I ask why Ms. Cote wants to cooperate with us in these two fields."
Personal friends are personal friends, and when it comes to matters related to the interests of his own company, Li Wenjun naturally doesn't dare to be careless.
Susan said: "Mr. Li must be very aware that the natural fiber materials currently used in the textile industry mainly include cotton, linen, silk, wool, etc. Each of these materials has its own problems. For example, cotton consumes a lot of water and is not environmentally friendly. Silk is also It tends to turn yellow due to aging.”
Therefore, there are currently two development directions for the textile industry: research and development of new natural fibers or new synthetic fibers.
Susan said: "I heard that Mr. Li has recently been developing bamboo fiber. Chinese people have always had a preference for bamboo, and bamboo is also a unique plant in China. We are also very interested."
In fact, it’s not just bamboo fiber. Li Wenjun is also developing new natural fibers extracted from soybeans, kapok, lotus and reeds, and even composite textiles of several natural fibers.
Judging from the results obtained so far, bamboo fiber has better antibacterial properties and breathability, and the power consumption and accidental damage rate in the production process are also the lowest. Therefore, bamboo fiber is temporarily regarded as the main direction of natural fiber in the future.
However, this matter is still in the laboratory research and development stage, and the finished product has not yet been produced, so it has not been announced to the public at all.
How did Susan know?
Did she accidentally let it slip, or was she deliberately reminding him that someone in the "Civil and Military Research Center" was not too tight-lipped?
Li Wenjun's heart was moved, but his face remained calm, and he nodded slightly: "We can cooperate in the research and development of new natural fibers. But, I don't know how much you want to cooperate with us?"
He didn't answer the question directly, also to protect her.
Susan said: "We can provide the second generation modal fiber production technology."
Modal is a cellulose regenerated fiber with high wet modulus viscose fiber developed by an Austrian company. The raw material of this fiber is European beech wood, which is first made into wood pulp and then processed into fiber through a special spinning process. Although it is made of natural materials, it has the advantages of high strength, high moisture absorption and dye uptake rate of man-made fibers. Therefore, the fabric made has good drape and dimensional stability, can still maintain bright colors after being washed many times, and is very comfortable to wear.
The only drawback of modal is that it has poor stiffness, but because it is a regenerated fiber, the thickness and length of the fiber can be controlled by a machine, so it is easy to blend it with other fibers and other materials to make mixed fibers. So this shortcoming can also be overcome.
Modal has always been mainly used as a high-end fashion fabric and a cash cow for a European textile company.
In this period, haute couture clothing basically had to be purchased from this company at a high price using modal fabrics.
Li Wenjun and the others are no exception.
Textile companies around the world are figuring out how to make Modal.
Li Wenjun and others have made great efforts to develop new natural fibers in order to surpass Modal and at least become a substitute product.
So, how could Susan reveal this trade secret so easily? !
The more tempting the bait, the more dangerous the trap!
