Police Detective

The new duty system of the four groups has initially achieved results. Although there were few people yesterday, after more reasonable arrangements, both Ren Xu and Bai Song slept well at night.

At about seven o'clock the next morning, Bai Song got up early and went to the cafeteria to eat. The criminal police and the case investigation team were preparing to arrest people. Bai Song saw Li Suo and was not in good spirits, so he went over to ask what was going on.

"We caught those two thieves yesterday and were busy until four o'clock in the morning before sending them in." Li Yunfeng rubbed his temples: "One of the thieves has high blood pressure."

"That's really troublesome." Bai Song understood that it would be more complicated to enter the detention center for such people who are a little sick.

"I stay up late every day. My blood pressure is 160, but that thief's is only 155. It's really, ugh." Li Suo sighed.

Bai Song slept at past one o'clock yesterday. At that time, the thief's detention procedures had been completed, but he didn't expect that the transfer to the detention center would be delayed for a long time.

"Why don't you take a break?" Bai Song said, "I have nothing to do today. If you need any help, just tell me."

"I asked the three people who worked overtime with me yesterday to rest, but I can't rest." Li Suo said: "Then you can go to the production base with me. But after the meeting at noon yesterday, I asked them to rest." A few people went to look around and found it to be of little value and might have run away."

"Then why didn't you go in yesterday?" Bai Song was a little curious.

"That place is a small road that is not very easy to walk. Go in through the small road. After seeing the building, there are some open areas nearby. If there are people inside, they will definitely be discovered if they go inside." Li Suo gestured at the terrain with his hand: "Connected to this path is a road that has been in disrepair for a long time. It is monitored, but the camera cannot directly capture the path. We have been nearby several times and we have not seen any cars entering or exiting it."

"How big is the scope of this video?" Bai Song was a little confused.

"It's just a video next to the intersection. That path is not an official road, so there are no traffic signs." Li Suo explained: "There are not many cars on the road connected to the path, so there are only about 1,000 cars every day." Some trucks carrying goods pass by, and there is a highway next to the road. Small cars are afraid of tire wear, so they would rather take the highway."

"Is there surveillance? Let me take a look." Bai Song asked.

"Yes, it's on my computer. I'll watch it in the car later. If you don't mind the sway of the car, you can watch it." Li Suo said, "It's a bit of a journey to that place."

After taking the computer, Bai Song started reading directly in the back seat.

This is a total of half a month of video.

Watching the video is really a headache. This is 360 hours of surveillance video. Even if it is not paused at all and viewed at 16 times speed, it will take more than 20 hours without blinking. No one can bear it.

"No, there are too many. Go to the criminal police and I'll find someone to do it." Bai Song felt dizzy watching hundreds of videos.

"Okay." Li Suo was not in a hurry. If he went to the criminal police now, he could talk to the second team about arresting people again. It was only half past seven.

It was already eight o'clock when we arrived at the criminal police team. Bai Song took Li Suo's computer and found Wang Liang first.

"You mean, find all the cars passing by here?" Wang Liang opened a video and found that basically every few minutes, large cars pass by on this road. The angle of the camera is from the side, so you can't see it. to the license plate number.

"That's right," Bai Song said, "What I need to filter is large vehicles with a speed of less than 20 kilometers per hour. This video cannot capture the small road I want to see, but all the people who want to see that road can't be captured in this video." The speed of the large vehicle coming out of that road must be less than 20 kilometers per hour, because the large vehicle has to brake in advance and has poor acceleration capabilities. The monitored blind spot is only more than 20 meters away from that road.

In addition to those going that way, there are also large cars coming out of that road. The speed of other cars is above 40 per hour. There are very few cars and pedestrians on this road, and large cars will not easily reduce their speed to less than 20. "

For big cars, speed is money.

If there is a problem, you must slow down, but if you slow down and accelerate when you have nothing to do, you will easily waste a few dollars of gas money.

"Okay, no problem." Wang Liang understood what Bai Song meant: "It can be done in the afternoon."

This is not difficult with computer programs. First of all, current video processing software can capture specific animations, and a large truck passing by will be a specific animation, which is very conspicuous. Here you can only capture the animation as big as a big car, and let the small car go.

Assume that it takes 5 seconds for a car with a speed of more than 40 kilometers per hour to disappear from the surveillance camera, and 10 seconds for a car with a speed of 20 kilometers per hour. Then, through software, delete the part of the animation that takes less than 5 seconds, leaving the remaining If you manually select the ones you downloaded, there will be no problem.

Very simple.

Wang Liang took action directly and began to disassemble Suo Li's laptop.

"What are you doing?" Bai Song was startled.

"His computer is too slow. Even if a video of 500 to 600 GB is recorded at 30 megabytes per second, it will probably take a long time to copy it. If you want to do multi-thread calculation on my computer, you must use my computer to operate it," Wang Liang said: " Remove his hard drive and connect it directly to my computer with the interface to use it as a mobile hard drive. This way, I can open the video files directly on his hard drive, saving several hours."

"Okay, just don't break it." Bai Song looked at Wang Liang's skillful skills. I'm afraid he has done this a lot. It seems that his skills are becoming more and more proficient.

This kid is pretty good. If he loses his job, he can probably make a living by repairing computers. Bai Song murmured a few words and left Team 3's house.

The people we want to arrest today are not so easy to catch. Many of them have good anti-investigation awareness. The criminal police have also done a lot of preliminary planning and received some technical support.

Of course, Zhang Che is easy to catch. He idles around every day and can be caught casually.

If you weren't worried that "second brother" might tip off Zhang Che, you could just ask him where Zhang Che is and then call him over.

Bai Song stopped arresting those people, and Ren Xu was still catching up on his sleep in the office. Before the shift was handed over at 8:30, it was okay for Bai Song to run out, but not Ren Xu.

He finished handing over to Wang Liang here, and Suo Li also finished chatting with the captain of the second team. The two of them took five people from the case handling team in the institute, drove two cars, and went to the base first.

This place is in the suburbs. After driving dozens of kilometers on the road, the car entered this highway.

There is a highway nearby, so this small road is basically deserted, and there are very few cars. Li Suo has been here a few times, and the cars can only drive up to forty or fifty at most, and they will fall apart any faster, and there are some pits. The car has poor visibility and is difficult to avoid.