Chapter 489 Dark Under the Lamp
The similarity is 83%!
This is the highest similarity given by the Tianyan system for face matching.
Face recognition matches different points on the face.
A general face recognition system requires different points such as the upper jaw, left and right faces, and lower jaw to be determined simultaneously in order to accurately perform face recognition.
Of course, this does not mean that face recognition requires the cooperation of multiple points. In theory, the same parts of different faces must be different.
Take foreheads for example. No two people have exactly the same foreheads, so in theory, the face recognition system can analyze and judge portraits by comparing foreheads.
With China's scientific and technological means, it is naturally possible to achieve this kind of small-scale face recognition and comparison.
However, different levels of face recognition comparison require different points to be collected.
The more small-area facial comparison is done, the more points need to be collected.
For example, normally the face recognition system only needs to collect 5 points on the forehead, left and right faces, chin, and philtrum for comparison.
Then the number of points used by the system to compare faces is 5.
However, if only the right side of the face can provide comparison, then the number of points that the system needs to collect needs to reach a certain number on the right side of the face.
For example, there are also 5, but what about other facial information?
Five points are also needed on the forehead, five on the left side of the face, and five on other parts.
Then there may be as many as 25 comparison points on a face.
In this way, although the comparison precision is improved, the computing time of the system is increased.
An increase in system operation time means an increase in comparison time.
Therefore, considering the requirements of comparison accuracy and comparison time, the Sky Eye system has only 5 comparison points.
The reduction of comparison points means that the comparison accuracy will be reduced.
Currently, there are three ratio results given by the Sky Eye system regarding Liang Feng.
One of them is 28%, another is 36%, and the last one is 83%.
Generally speaking, if the comparison accuracy is lower than 50%, the proportional result will most likely be inaccurate.
Therefore, Huang Guojun directly targeted the comparison portrait at the entrance to the northern suburbs expressway in Hulu City.
This comparison is a photo captured by a surveillance camera at a toll plaza at a highway intersection.
A man who is 83% similar to Liang Fengcong is sitting in the passenger seat wearing a mask.
License plate number, Liao P98321!
"Coordinate with the Pan City Detective Team to retrieve relevant surveillance on the highway, share information from the Sky Eye system, and find out where this man has gone!"
The intersection of Hulushi Beijiao Expressway is the expressway from Hulushi to Panshi.
The other party's starting direction should be towards the market.
Market opening...
It is the hometown of Liang Feng's girlfriend He Rui.
"Also, find the owner's registration information of this Liao P98321 car and find the driver as soon as possible!"
After the detective team in Panshi got the news, they cooperated very quickly.
However, it is not a simple matter to find someone in the city's Sky Eye system.
Huang Guojun was able to quickly find Liang Feng in the Sky Eye system in Hulu City because Huang Guojun knew that Liang Feng left in the self-built housing area.
Therefore, as long as we retrieve the surveillance records near the self-built house area on the night of the 12th, we can naturally find Liang Feng relatively quickly.
However, if you don't know where Liang Feng is and directly use the Sky Eye system to compare it, the time it will take is uncertain.
Of course, there should be no problem finding it, but depending on the time it takes to find it, it may be found in one second, or it may not be found for ten days and a half.
Because in this case, the Sky Eye system needs to compare portraits among all surveillance video data in the entire urban area.
This is actually no different from finding a needle in a haystack, except that the system's comparison speed is faster, but the data being compared is not as simple as hundreds of thousands or millions of people.
Instead, hundreds of thousands of people and millions of people compare all the data recorded by the Sky Eye system over a period of time.
This amount of data is simply an astronomical figure.
Fortunately, the owner information of Liao P98321 was quickly found.
Wang Chang, the car owner’s name is Wang Chang, and he is a black driver.
"The morning of July 13th?"
"I did receive a long-distance job that day. It was two people, a man and a woman. Both of them were wearing masks, but I could tell by the face shape of the woman that she was pretty."
In the interrogation room, Wang Chang answered Huang Guojun's questions truthfully.
"Where did you pick them up and where did they go that day?"
Because it had just been four or five days, Wang Chang had not run many long distances, and Liang Feng was wealthy, so Wang Chang was quite impressed.
"I picked them up on Youyi Road. The two of them were carrying two suitcases and said they were going to market."
"The man offered to pay 400 yuan. I thought the price was pretty good, so I invited them to go to the market on the northern suburbs expressway."
"Where did they go after arriving in Panshi? Where did they get off the bus?"
As long as they know where they got off the bus, the Panshi Detective Team can locate Liang Feng and the location where he first appeared in Panshi. In this way, it will not be much easier to conduct comparative inquiries through the Sky Eye system.
Of course, it is not yet certain that that person is Liang Feng. After all, the similarity is relatively high. It is not yet certain whether it is Liang Feng or not.
"They didn't go to market!"
Um?
Huang Guojun was slightly startled, what happened?
Aren't the two people you mentioned going to market?
This fucking fart technique has changed again?
"Didn't you just say that they went to the market?"
"Yeah, but they changed the place halfway."
Huang Guojun: "..."
I'm afraid this Wang Chang is not a funny guy.
"Wang Chang, the two people you pulled in on the morning of the 13th are murder suspects!"
Murder...suspect?
Wang Chang's mouth twitched, and his face turned green from Huang Guojun's fright: "Kill...kill?"
"Wang Chang, two murder suspects disappeared after riding in your car on the morning of July 13. I hope you can fully cooperate with us and help us find these two people."
"Yes Yes Yes!"
Wang Chang wiped the sweat from his forehead: "I will definitely cooperate. Don't worry, I will definitely cooperate and I won't hide anything!"
"The two people were indeed going to market that day. That's what they said at the beginning. I took them and headed directly to the toll gate of the Beijiao Expressway."
"But after passing the toll intersection, the man wearing a mask sitting in the passenger seat answered a phone call."
"I didn't hear clearly what he said on the phone, and the man didn't say much. He said uh-huh and uh-huh twice and then the phone hung up. Then he told me that he didn't want to go to the market."
"At that time, because we couldn't turn around on the expressway, we had to drive forward. We took the next exit from the expressway, which was the Wangjiazhuang exit."
It turned out that on the morning of July 13, Wang Chang and the others did not go to Panshi as agreed. Instead, they exited the expressway at the exit of Wangjiazhuang Expressway and turned back to Hulu City.
"The man asked me to drive the car to Xinlian Market. After finally giving me 100 yuan, the two of them got out of the car at the south gate of Xinlian Market."
Xinlian Market?
Huang Guojun did not expect that the person suspected of Liang Feng did not go to Panshi, but came under the lights and turned back to Hulu City from the highway to Xinlian Market.
Xinlian Market is located in the eastern suburbs of Hulu City. It is the largest vegetable and fruit wholesale base in Hulu City and is a first-level wholesale market.
This market has a history of more than 30 years. It is surrounded by self-built houses. The mobility of people in the area is very high and the residents are also very dense.
If Liang Feng really hid here, it would be too difficult to find and capture him.