The new duty system of the four groups is beginning to show results. Although there were fewer people yesterday, after a more reasonable arrangement, Ren Xu and Bai Song both got a good night's sleep.
The next morning at around seven o'clock, Bai Song got up early and went to the cafeteria to eat. The criminal police and the case-handling team were preparing to arrest someone. Bai Song saw Chief Li, who didn't look very well, so he went over to ask what was going on.
"We caught those two thieves yesterday. We were busy until four in the morning before we sent them in." Li Yunfeng rubbed his temples: "One of the thieves has high blood pressure."
"That's indeed troublesome." Bai Song understood that it would be more complicated for people with such illnesses to be put into the detention center.
"I stay up late every day, and my blood pressure is 160, while that thief's is only 155. It's really, sigh..." Li sighed.
Bai Song went to bed at around 1:00 yesterday. By then, the thief's criminal detention procedures had been completed, but he didn't expect that sending him to the detention center would delay him for a long time.
"Why don't you take a rest?" Bai Song said, "I don't have anything to do today. If you need any help, just tell me."
"I let the three people who worked overtime with me yesterday rest, but I can't rest." Li Suo said, "Then you can go to the production base with me. However, after the meeting at noon yesterday, I asked a few people to take another look around there. It seems that there is nothing of great value. It may have run away."
"Then why didn't you go in yesterday?" Bai Song was a little curious.
"That place is a small path that is not easy to walk on. After entering through the path and seeing the building, there are some open areas nearby. If there are people inside, they will definitely be discovered if they walk in." Li gestured with his hands to indicate the terrain: "Connected to this path is a road that has been in disrepair for a long time. There is surveillance, but the camera cannot directly capture the path. We have been nearby several times and have not seen any cars entering or leaving."
"How big is the range of this video?" Bai Song was a little confused.
"It's just the video footage next to the intersection. That path is not a formal road, so there are no traffic signs," Li explained. "The road connected to the path is not used by many people anymore. There are only a few trucks carrying goods passing by every day. Next to that road is the highway, and small cars would rather take the highway to avoid tire wear."
"Is there any surveillance? Let me take a look." Bai Song asked.
"Yes, it's on my computer. You can watch it in the car later. If you don't mind the shaking of the car, you can watch it." Li Suo said, "It's a bit far to get there."
Bai Song took the computer and started looking at it in the back seat.
There is a total of half a month of video recording.
Watching the video is really a headache. This is 360 hours of surveillance video. Even if you don’t pause it and watch it at 16 times the speed, you still have to watch it for more than 20 hours without blinking. No one can bear it.
"No, there are too many. Let's go to the criminal police station and I'll find someone to do it." Bai Song felt a little dizzy looking at the hundreds of video recordings.
"Okay." Chief Li was not in a hurry. If he went to the Criminal Police Department now, he could also talk to the Second Team about arresting someone. It was only half past seven.
It was already eight o'clock when he arrived at the criminal police team. Bai Song took Chief Li's computer and found Wang Liang first.
"You mean, find out all the cars passing by here?" Wang Liang casually opened a video and found that there were large trucks passing by this road every few minutes. The camera was shooting from the side and the license plate number could not be seen.
"It's like this," Bai Song said, "What I need to filter out are large vehicles with speeds below 20 kilometers per hour. This video cannot capture the small road I want to see, but all large vehicles going to and coming out of that road must be traveling at speeds below 20 kilometers per hour, because large vehicles have to brake in advance and have poor acceleration capabilities, and the blind spot of this surveillance is only more than 20 meters away from that road.
Except for those heading to that road and the large vehicles coming out of that road, the other vehicles are all driving at speeds above 40 km/h. There are very few small cars and pedestrians on this road, and large vehicles will not easily reduce their speed to below 20 km/h.
For large trucks, speed means money.
You must slow down if there is a problem, but if you slow down or speed up when you have nothing to do, you can easily waste a few dollars of gas.
"Okay, no problem." Wang Liang understood Bai Song's meaning: "It will be done in the afternoon."
This is not difficult to do on a computer program. First of all, the current video processing software can capture specific moving pictures, and a large truck passing by is a specific moving picture, which is very conspicuous. Here, you can only capture the moving picture of the large truck, and leave the small truck alone.
Assume that a car traveling at more than 40 kilometers per hour takes 5 seconds to enter and disappear from the surveillance camera, and a car traveling at 20 kilometers per hour takes 10 seconds. Then, through software, the part of the animation that is less than 5 seconds can be deleted, and the rest can be manually selected, and there will be no problem.
It's very simple.
Wang Liang got straight to work and started disassembling Li's laptop.
"What are you doing?" Bai Song was shocked.
"His computer is too slow. Even if the video is 30 megabytes per second, it will take him half a day to copy out the 500-600 GB video. To do multi-threaded calculations on my computer, I have to use my computer to operate it," Wang Liang said. "Take down his hard drive and connect it directly to my computer with an interface, so it can act as a mobile hard drive. This way, I can open the video files directly from his hard drive, saving several hours."
"Okay, just don't break it." Bai Song looked at Wang Liang's skillful technique. He must have done this many times, and it seems that his skills are becoming more and more sophisticated.
This kid is good. If he loses his job, he can probably make a living by repairing computers... Bai Song muttered a few words and left the team's house.
…
The people we want to catch today are not so easy to catch. Many of them have good anti-detection awareness. The criminal police have also done a lot of preliminary planning and received some technical support.
Of course, Chang Cheh is easy to catch. He is idle every day and can be easily caught...
If he wasn't worried that "Second Brother" might tip off Chang Cheh, he could just ask him where Chang Cheh was and then call him over.
Bai Song didn't go to catch those people, and Ren Xu was still catching up on his sleep in the station. It was not yet 8:30 when he was supposed to hand over his shift. It was okay for Bai Song to run away, but not for Ren Xu.
After he finished handing over the work to Wang Liang, Chief Li also finished chatting with the captain of the second team. The two of them, along with five people from the station's case-handling team, drove two cars and went to the base first.
This place is in the suburbs. After driving on the main road for dozens of kilometers, the car entered this highway.
There is a highway nearby, so this path has been basically abandoned. There are very few cars. Li has been here several times. Cars can only drive at 40 or 50 speeds at most. If they go faster, they will fall apart. There are also some potholes, and small cars have poor visibility and are hard to avoid.
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