There is no clue about the murder that happened in Futian District, and the murder that occurred in Longhua District in July last year actually has eyebrows, and it is really not bright in the east and bright in the west. Pen fun and pavilion www.biquge.info

Although there was only one death in the 7.11 case, it was a backlog of cases that had not been solved with a lot of human and financial resources. If it can be successfully cracked, it can definitely be called of great significance.

Han Bo was completely sleepy, and suddenly came to his senses.

In a few hours, it will be dawn, and I simply don't sleep and go straight to the Criminal Investigation Bureau.

When I arrived to see that the "Backlog Office" was empty, I called and asked only to know that Feng Jinhui, Xu Aiguo, and Gao Xueping, the director of the "Backlog Office", were in the technical department and were asking the technical police to analyze the video.

"Han Ju, look, it should be this kid!" Feng Jinhui was in high spirits, holding the teacup in both hands with confidence.

Han Bo, Lao Xu and Gao Xueping nodded slightly, walked to the left side of the map investigation police, and leaned over to look at the computer monitor.

Video surveillance is not a new thing, it has been widely used as early as the last century.

With the construction of a safe city, the scope of video surveillance has gradually expanded, video surveillance technology with its advantages of being able to directly or indirectly record the criminal process, so that the image of the suspect, behavioral characteristics, case loss of property and other information become intuitive, has gradually become an important means of collecting criminal evidence and extracting criminal clues in the process of investigation of various cases, and thus innovatively formed a "from the image to the person, from scratch" investigation mode.

Therefore, the leaders of the Ministry of Public Security clearly pointed out that video surveillance technology not only has important functions such as detecting crimes, preventing crimes, and deterring crimes, but also has the expansion functions of locking targets, providing clues, fixing evidence, and assisting interrogations, and has become a new growth point for the combat effectiveness of public security organs after criminal investigation, technical investigation, and network investigation technology!

The graphic investigation business is not just as simple as sitting in front of the monitor and watching the video repeatedly, from extracting the surveillance video to analyzing it, and then to using it as evidence for conviction and sentencing, there is also a set of strict procedures.

For example, after receiving a report and filing a case, in order to ensure the consistency of the crime scene and the surrounding important environment with the scene at the time of the crime, all cameras are required to maintain the state at the time of the crime, and must not change the focus or adjust the angle, and at the same time, the whole process of image acquisition, image research and analysis can be completed through the image investigation and judgment system.

Before extraction, the scope of the preliminary search should be determined based on the circumstances of the case, and investigation tasks should be assigned, including arranging personnel to extract video resources and determining the scope of the investigators' investigation.

It is even necessary to "draw a map" like on-site investigation, display a detailed monitoring point distribution map on the map, and mark the monitoring points within the search range, including the camera's unit, contact person, contact information, camera coverage, etc., to form a preliminary distribution map of monitoring resources.

In the process of on-site visit and investigation, according to a series of information fed back by on-site investigators, supplementary labeling should be carried out for the monitoring points that have clues but are not marked online...... Finally, the results of analysis and processing are stored in the warehouse and archived.

However, due to the lack of unified standards before and now, the level of video surveillance in various places is uneven, and the pixels of monitoring probes are different.

Han Bo has been paying attention to surveillance technology since he was transferred to the public security system, and as early as 98 years, he tried every means to build a closed-circuit television surveillance system in Liangzhuang, and experienced the development process from cassette to digital video.

In the past, it was a video tape, and the tape was used repeatedly, which was easy to wear out, and once there were snowflake spots, the image characteristics of the person were masked, and the video was very unclear. After 2005, I switched to digital video, and I no longer had to worry about tape wear, and it was much better to analyze.

The image of this video being slowed down is blurry, and the surveillance probe that shot this video obviously belongs to the type of pixel that is not high.

A person is only the size of a fingernail, and he can't see his facial features clearly.

The police didn't bother to say hello to the leader, quickly tapped the keyboard and clicked the mouse, and concentrated on using multi-format video compatibility, noise removal, blur removal, image enhancement, deformation correction, super-resolution reconstruction and other technical means to clarify the blurry video.

There is a specialization in the art industry, and with the efforts of the graphic investigation police, the video is really much clearer.

I saw him click the mouse, bring up another video, and play it at the same time as enabling the "picture-in-picture" mode, after watching it for more than ten seconds, Xu Aiguo couldn't help but smile: "This is the same person, the clothes are the same, the height, body shape, and gait are all about the same!"

"You can't be wrong, it's him. ”

The police were also excited, and brought up the third video, this video is daytime, much clearer than the first two, and the focal length is closer, and after technical processing, you can roughly see the appearance.

A young man about twenty years old, with a long face, flat head, there seem to be a lot of pimples on his face, a T-shirt on his upper body, a pair of jeans on his lower body, empty hands, no backpack, he seems to be very unfamiliar with the surrounding environment and a little curious, looking around while walking in just a dozen seconds of video.

Han Bo didn't know much about the 7.11 case, only knew that it was a suspect, and turned around and asked: "Now that I have three videos, Feng Da, so I have basically figured out the trajectory of this guy's activities before and after the crime?"

The leader is here to solve many difficulties!

Feng Jinhui subconsciously looked at Gao Xueping, pointed to a map that Xu Aiguo had just unfolded, and said: "I only figured out the general trajectory of his activities in Guangming Community, Xiao Gao has all the surveillance videos within 3 kilometers of the crime scene, if there are enough people, it would be good to know how to investigate." ”

Han Bole couldn't help but smile and asked, "Comrade Xueping, how did you identify these three videos?"

When it was time to complain, Gao Xueping said with an embarrassed face: "Report to the Korean Bureau, after getting the surveillance video from the sub-bureau at noon, I went to buy more than 20 USB flash drives, and by the way, I went to two old units, and asked the community team of Qingyang Police Station and the assistant police of the fourth squadron of the criminal police of the Luohu Branch to help me see, more than 20 people, break it down and look at it, call me if I find it suspicious, and then further screen it according to the camera number and time period they provide." ”

He only gives people the general physical characteristics of a suspect, but many videos are not idle, and he can imagine that people will call him whenever they feel suspicious, and he can also imagine that he and Feng Jinhui and others have watched a total of many videos from the afternoon to the present.

After all, the technical resources of graphic investigation are tight, and it is impossible for them to push all the videos over, otherwise they will see the Year of the Monkey with a few technical police officers in the technical department.

"It's hard for a good woman to cook without rice, it's really hard for you. Han Bo patted Gao Xueping's arm, turned around and said with a smile: "Feng Da, I will help you solve it if you don't have enough manpower, what do you need me to do for you besides the lack of manpower?"

"Han Bureau, now at least the suspect's photo, although it is not particularly clear, but as long as you have a little impression of the suspect and see the photo, you should be able to remember, I plan to take a two-pronged approach, the video will continue to be analyzed, and strive to find out more specific activity tracks. At the same time, a notice was issued to help each police station check whether there were any outsiders with similar facial features and accents among the registered foreign population.

If you can, it is best to ask the Longhua Branch to organize community police to visit and interrogate with photos of suspects. With no luggage and empty hands, it is unlikely that he will run to Shenzheng for no reason, and there should be acquaintances in Shenzheng, especially in Longhua District. As long as the foundation is solid enough, you should be able to figure out their identity. ”

It's easy to say, but it's not so easy to do, and it takes hundreds or even thousands of police forces to invest.

Afraid that the leader would not be able to make up his mind, Xu Aiguo said eagerly: "The Han Bureau, the special case team of the Longhua Branch have almost ruled out all possibilities, and only this one possibility remains. If this opportunity is missed, if the suspect does not commit crimes in the future, it will be more difficult to solve the case and catch him. ”

The longer the case drags on, the more difficult it will be to solve it, how can Han Bo delay the fighter?

After weighing it for a while, he agreed: "Comrade Xueping, go and print the notice of the investigation, print it and send it directly to the Municipal Bureau, I will call the bureau office and issue it in the name of the Municipal Bureau." ”

The grassroots team will receive several coordination notices or investigation letters every day, and there are only a few people in total, so it is natural that the most important thing is to do it first. In other words, the effect of issuing a penalty investigation notice in the name of the municipal bureau is different from that issued in the name of the criminal investigation bureau of the municipal bureau.

Gao Xueping was overjoyed, and hurriedly stood up and saluted: "Yes!"

walked out of the investigation room and made a few calls to the relevant departments, and Han Bo came to the "Backlog Office".

Lao Xu rarely comes over, turns on the water dispenser and rummages around for tea, not knowing where to put it.

Han Bo felt a little funny, grabbed him and said, "Old Xu, don't rummage through the cabinets, I'll just drink some boiled water." ”

"Zhang Ying's girl is really, things are scattered!"

"Little girl, it's normal to lose three or four," Han Bo smiled, took the boiled water and asked, "Two, do you have any opinion on me if you invited you to do this drudgery?"

"How can there be an opinion?" Feng Jinhui lit a cigarette and said without joking: "What's the point of going to the police station, it's really better to work in the criminal police team, isn't this a criminal police team, and it's not an ordinary criminal police team, although it also solves the murder case, but there is no pressure to solve the case, and no one knows if you are lazy." ”

"What kind of consciousness, what about the old comrade, Han Ju, he doesn't represent me, he's lazy, I'm not lazy. ”

Of course, Han Bo knew that they were joking, and only a few members of the bureau's party committee in the city's bureau and these old comrades who had taken a back seat and had no desire to be rigid could joke with him, and he really felt a sense of being overwhelmed by the heights.

"Two, when it comes to being lazy, I think it's not only good to be lazy, but even good for work. ”

Han Bo put down the cup and said with emotion: "Solving the backlog of cases is different from solving the current homicide case, the previous case-handling units that should be thought of have been thought of, and the previous case-handling units have also done the work that should be done. To solve the case on this basis, one is to rely on luck, the other is to rely on inspiration, and to rely on a flash of inspiration.

This is the same as going to school, and the grades of dead school are not necessarily good. Those who can play and know how to combine work and rest can get good results. Therefore, the two of them can't work day and night, forgetting sleep and food like they used to do when they worked in the grassroots criminal police team, they must be able to rest and relax, so that their thinking can diverge and have a flash of inspiration. ”

The leader is at a level, Feng Jinhui couldn't help but smile and said: "Han Bureau, with your instructions, we can be lazy in the future!"