Chapter: 9

Jiang Yuan stared wide-eyed, and saw a silver dumpling flying into his forehead.

Numerous information, manic crowding.

The Chongqing-style single-fingerprint analysis method is a kind of single-fingerprint analysis method, and it is also the earliest single-fingerprint analysis method adopted in China. It is specially used to deal with the situation where there is only one fingerprint, or even only one incomplete fingerprint. Similar to it, there are domestic Qingdao-style single-fingerprint analysis methods, foreign Bartley-style single-fingerprint classification methods and other methods. Different analysis methods can't be said to be good or bad. The main reason is that the classification and typing of fingerprints are different, and the analysis methods are slightly different.

Simply put, this is a technique used to compare fingerprints.

Jiang Yuan's eyes brightened slightly. Fingerprint comparison can be said to be the housekeeping skill of trace inspection. Moreover, it is time-consuming and labor-intensive to learn it.

However, comparing fingerprints is not an easy job.

The kind of machine that enters any fingerprint photo into the computer and then crunches to find the matching fingerprint does not exist so far.

Internationally mature automatic fingerprint identification technology (AFIS), regardless of whether it uses RBNEC, American COGENT, or French Morpho, all use manual marking of on-site fingerprint features, which are so-called feature points, and then in the system, fingerprint The feature points are automatically matched and retrieved, and finally scored according to the degree of similarity from high to low to give a candidate viewing list.

This is because fingerprints will be deformed due to factors such as pressure, and the deformation is often non-linear. In many cases, fingerprints will also shift and cover, and poor storage conditions are commonplace. Fingerprints found at crime scenes are more common. May be mutilated.

In short, automatic fingerprint recognition technology requires someone to do manual preprocessing on fingerprints.

For equipment such as employee punch cards, they only know how to compare whether two fingerprints are the same, and the recognition rate does not meet the police's needs at all.

At this time, Wu Jun only looked at Jiang Yuan's expression, so he couldn't help coughing and coughing twice, and said: "It's nothing else, if you want to get off work, you can go back first, and I will do the rest."

"Uh... can it be?" Jiang Yuan hesitated. He kind of wants to try out the new technology, but it doesn't seem to be a hindrance to try again at home.

"That's all we have to do. We'll finish it when we're done." Wu Jun raised his chin proudly. Compared with the policemen who just started to get busy, the forensic doctor's work is over.

Jiang Yuan changed into casual clothes, rode an electric scooter, and drove home slowly.

The advantage of working in my hometown is that it is close to home. Even if I live outside the city, I can ride an electric bike to get there in a while, and I can enjoy the scenery and the riverside scenery without traffic jams.

As far as the urban landscape is concerned, Ningtai County is still doing very well. Especially the front line of Taihe, it took a lot of effort to design, build and maintain it. This can be seen from one statistic. In just half a month since Jiang Yuan joined the job, the relevant departments have punished five Che Zhens on the front line of Taihe. The couples here are all greedy for the scenery, and they came here on a special trip from other places - the local Che Zhen knows to go to Sining Mountain.

Jiangjia Village is located at the foot of Mount Sining, embraced by the Taihe River. It used to be famous for its dense paddy fields, but now it is famous for its surrounding areas because of the demolition of scenic spots.

All the land of Jiang Yuan's family has also been occupied. The newly divided houses are scattered in many districts inside and outside the city. Jiang's father himself lives in the Jiangcun district closest to the original site of Jiangjiacun. This district is also where the Jiang family lives most. The downstairs is full of villagers, except that everyone does not have to work in the fields, and their daily life is no different from that in the village.

Comrade Jiang Fuzhen built a large stove in his own kitchen, except for a slight modification of the chimney, and the addition of a high-suction range hood. The fuel is firewood and coal. , as deep as a goose, it is truly mighty...and quite delicious.

When Jiang Yuan entered the Jiangcun community, he began to nod to the people on both sides non-stop, parked the car downstairs, and then returned to the elevator, and saw that there were already people waiting there.

"Aunt Hua." Jiang Yuan greeted. Middle-aged women with the same surname in the same village but not in the five uniforms are called aunt or aunt plus proper nouns.

Aunt Hua smiled, and asked impatiently, "Your Seventeenth Uncle was stabbed to death by your Seventeenth Aunt?"

Jiang Yuan was taken aback, and said: "The case is still under investigation, so I can't say anything."

"Is that true?" Aunt Hua clenched her fists, her toes ready to spread the news.

Jiang Yuan couldn't help recalling the bombardment of information he got when he went home on vacation every year. Knowing that he couldn't give any hints, he immediately said tirelessly: "The case is still under investigation. I can't tell you the specifics, and I can't tell you. The truth of the news I got..."

"That's fake?" Aunt Hua obviously wasn't going to give up.

laugh.

The elevator doors open.

Jiang Yuan took the opportunity to get out of the elevator, and then opened the door of his own house - the villagers in the Jiangcun community are used to not locking the door during the day, so that they can save the trouble of knocking on the door by visiting each other.