Chapter 766: Running Maps

"I am here with several leaders of the Anti-Drug Brigade of the Zhengguang Bureau, and I have turned on the speakerphone." Jiang Yuan said to Pang Jidong on the other end of the phone, then turned on the speakerphone and placed the phone in the center of the conference table.

"Alright, Master." Pang Jidong answered quickly, then smiled: "Hello everyone, I am Pang Jidong from the Fourth Brigade of the Luojin City Criminal Police Brigade."

"Captain Pang, hello, hello, I am Old Shi from the Anti-Drug Brigade, Shi Zhonglong. We should have met before, haha..." Shi Zhonglong had indeed been to Luojin City to catch people and stayed for a period of time, and had an impression of several captains in Luojin City.

Looking up at Jiang Yuan, Shi Zhonglong was both curious and opening the topic, saying: "Captain Pang, when did you apprentice to Forensic Doctor Jiang?"

"I have been apprenticed for a year." Pang Jidong smiled and introduced it, but didn't say it completely. He didn't know what the situation was on the opposite side, so naturally he had to help his master support the scene.

The brigade leader and others of the Anti-Drug Brigade quickly greeted each other.

At this time, Shi Zhonglong and others finally confirmed that Jiang Yuan was really Pang Jidong's master, and it was the kind that had been formally apprenticed and taught.

Within the police circle, it is relatively traditional, and such a master-apprentice relationship can be said to be very common and very respected.

A room full of people looked at each other, smoking cigarettes, looking at Jiang Yuan's face, and fell into contemplation.

Ningtai Jiang Yuan, too outrageous!

*Snap. *

Jiang Yuan took a cigarette, ready to resist the erosion of second-hand smoke, and hit the lighter, but it didn't light.

Shi Zhonglong quickly picked up the lighter in front of him and helped Jiang Yuan light it.

Jiang Yuan smiled and nodded at Shi Zhonglong, then said to the phone: "Jidong, we are now tracing a drug distributor, nicknamed Bull Ear. The last information we found is that he called his girlfriend from Luojin City. We have the location when he called. You see if it is convenient to trace..."

Bull Ear fled in a hurry, and many goods and money were left at home and his girlfriend's house. Bull Ear called to let his girlfriend hide the goods and send money.

As for whether his girlfriend was monitored by the police, he couldn't care about it at that time.

This was also Bull Ear's last message. After that, Bull Ear disappeared without a trace. It is estimated that he had already changed into a new identity.

Pang Jidong listened carefully to Jiang Yuan's case situation and said: "This is simple. I will tell the Image Investigation Brigade first, and then go to the command center. Our images are all summarized there..."

The Luojin City Criminal Police Team is at the brigade level, and the assigned image investigation is also at the brigade level, similar to Changyang City. In comparison, the Ningtai County Criminal Police Team is only at the brigade level, and the image investigation used to have only one image office, with a total of three people.

Jiang Yuan hung up the phone first, then spread out Bull Ear's files on the spot and read them.

Li Qian, the brigade leader of the Anti-Drug Brigade, considered it and stayed. It was not easy to contact Luojin City, and he also hoped to pull Coconut Meat's line up by the roots. The heroin line is still more traditional than new drugs. If it can be knocked out, it will be difficult to recover in a short time, and to recover, drug dealers will also have to pay a greater price.

Cui Qishan coughed twice and took on the task of social interaction.

While a group of people extracted a fairyland feeling from the conference room, Pang Jidong's phone called back, and then changed to several technicians to connect and tinker.

Soon, the content of the Luojin City Image Investigation Brigade's screen was synchronized to the large display in the Anti-Drug Brigade's conference room.

"Master, take a look at what time and place surveillance video you want to check." Pang Jidong was already very familiar with Jiang Yuan's style, knowing that what he needed most now was video resources.

Jiang Yuan looked at Captain Shi.

Shi Zhonglong quickly reported the time and place.

The image investigation of Luojin City *papadapada* pulled out a 9-screen display, and said: "This is the surveillance video of vehicle checkpoints and portrait checkpoints on the main street of the Wufeng area. I just ran a portrait, and there is no one consistent with Bull Ear."

The cameras at the portrait checkpoint are very clear, almost the same as ordinary mobile phones shooting faces. Daily passing through the sidewalk of the checkpoint, intersection, etc., someone will be filmed if they pass by. If ordinary people don't pay attention, they will definitely be filmed.

As for paying special attention, so that they can't be filmed, naturally they need to be more careful.

"Run a group of masked faces and see." Jiang Yuan looked at the software model used in Luojin City and started giving orders.

The image investigation of Luojin City responded, and soon pulled out a large number of images, saying: "There are 2720."

"Add a pair of sunglasses. Wearing sunglasses while wearing a mask." Jiang Yuan said.

The image investigation of Luojin City did as told. This time there were only twenty or so photos.

Jiang Yuan and others looked at them one by one, and regretfully found that there was no match with Bull Ear.

Pang Jidong took the initiative to say: "Otherwise, we will organize manpower here to check these 2720 pictures to see if there are any suspected Bull Ears?"

"Alright. Then thank you for your hard work." Jiang Yuan said.

"It's okay, the brigade leader said, what Jiang Team does are all major cases, and specially instructed us to invest fully." This time it was the police officer of the Image Investigation Brigade who spoke.

On the other end of the phone, the crowd of the Anti-Drug Brigade of the Zhengguang Bureau looked at each other, and their expressions became serious.

One sentence was not wrong: Jiang Yuan has done so many major cases, and it is absolutely correct for his side to cooperate well.

"OK, arranged. We formed a review group, it should take about an hour to have results." The captain of the Image Investigation Brigade personally explained over the phone.

Jiang Yuan thanked him repeatedly.

Wearing a mask, there is no way to compare directly, but using the manual checking method, the effect is still quite prominent. The most important thing is that finding the suspect does not need to be accurate. It is enough to find those who are roughly similar.

When there are few suspects, you can investigate specifically, or even go to the door to investigate.

This is the huge difference between theoretical investigation and actual investigation. Theoretical investigation always wants to get a "unique solution." Actual investigation doesn't have so many twists and turns. Looking at six or seven points of similarity, it is the norm to come to the door, and the case is slightly something, and it is the norm to hit a pole whether there is a date or not.

"Then let's continue, check the vehicle checkpoint." Jiang Yuan has LV6 image investigation (trajectory analysis) technology, and his ideas are set after set.

"Then run a car with no license plate, fake license plate, blurred license plate, and temporary license plate first?" The image investigation of Luojin City habitually gave suggestions.

"Can." Jiang Yuan also waited for a while.

Some people are smart, and will paint the license plate with muddy water. For cars like this, as long as they pass through the vehicle checkpoint, they will report to the police directly. The traffic police who wouldn't have watched the video originally have to click to see it in order to remove that small red dot.

The most conventional image investigation didn't run out, Jiang Yuan added: "Add a batch of vehicles where the face inside the car can't be seen clearly, including the passenger seat."

"Okay. In that case... Zhang Tu." The image investigation person reported.

Jiang Yuan rubbed his chin. Big data is like this now. Data is exploding. How to process and extract data is the core.

"Add a detour." Jiang Yuan said: "Vehicles that pass through the same location multiple times, on the same day, see which ones are there."

With the caution of drug dealers, whether they drive themselves or let the driver drive, it is unlikely that the car will arrive and get off directly. They will always look around.

This time, the vehicles pulled out by the image investigation were much fewer, only 7.

The image investigation released them one by one to watch.

"This is it." Jiang Yuan only looked for a while and confirmed Bull Ear, and said: "Track this black Sonata! Tail number 778."

"Yes." The technician of the image investigation was also quite excited. The video was pulled up, and he started to track along the trajectory of the black Sonata.

Soon, the Sonata drove away from the avenue and entered a small alley.

In the image, the car disappeared.

The image investigation of Luojin City is also professional, and soon according to the route, the surveillance image of the black Sonata two kilometers away was called up.

"Here, left again." Jiang Yuan looked at the time and said: "Bull Ear should have gotten off here. By the way, he also made a call."

"When the call was made, this car had already left Wufeng." The image investigation of Luojin City locked the car, so he could call up the time the car passed through each checkpoint, and could even draw a trajectory map on the map by software.

But if he got off halfway, everything has to start over. This made several image investigation personnel feel slightly frustrated.

Jiang Yuan remained unmoved. Some criminal suspects in cases are obviously more vigilant, but from his point of view, it is just a more interesting resistance.

Jiang Yuan said: "Bull Ear is so cautious, and made a call here in Wufeng, so he shouldn't live here. Find the single-person vehicle within 1 hour, 10 minutes after the call ended. Including those covering their faces."

The image investigation operated, and another 1300+ pictures came out, but there was no harvest.

Jiang Yuan pondered slightly and said: "In that case, it should be walking or cycling away."

"There is no record, it includes the checkpoint here." The police officer of the image investigation reminded that the previous 2720 pictures had just been read not long ago.

Jiang Yuan shook his head and said: "He should have taken a small road. He doesn't necessarily know where the checkpoint is, but taking a small road should be able to bypass it."

"There is no record showing that he is very familiar with this area." A image investigation couldn't help but express an objection over the phone.

Case investigation does not distinguish between size, especially major cases. In particular, any level of leader doesn't care about the "offensive" speech of subordinates. Because for cases at this level, they are afraid of insufficient clues. Adding one or two investigative directions is not a problem at all.

Furthermore, the experience of case investigation is important, and the unfixed thinking of young people is also important. Professional investigators know this in their hearts.

At most, it is that the investigative direction proposed by young people is difficult, so let them investigate it themselves, such as searching septic tanks, climbing garbage mountains, etc...

Jiang Yuan didn't care about the rebuttal of the young police officer on the opposite side, only said: "Bull Ear is a drug dealer, and he doesn't use his ID card and mobile phone in his daily life. Whether there is a record is not important... We are now considering the time issue first, because Bull Ear is fleeing, and the core he cares about most should be the time issue. Unless necessary, I believe he will not waste time."

Jiang Yuan said so, marked a few points on the map, took a screenshot and sent it to Pang Jidong, saying: "Find the surveillance of these few places. If there are missing ones, find the surveillance of other units, or civilian surveillance."

"Okay, I will send someone here." Pang Jidong agreed.

Jiang Yuan then opened a larger map, marked more than 30 points on the outer circle, and after a while, removed half of them.

"If you can't find it, the second batch will be here."

Jiang Yuan hung the LV6 trajectory analysis. Although there was very little information, he was still extremely confident.

The criminal police and anti-drug police at both ends of the phone were infected by Jiang Yuan's confidence and made optimistic smiles. Only the professional image investigation had a head full of questions: it was fine just now, why did this map jump out suddenly? ===== CHAPTER 767 =====