Back in the office, everything returned to calm, like a self-study room. Occasionally, someone would show off their love, which seemed to attract everyone's attention, but after the incident passed, everyone would forget about it.

The work in front of everyone was the most important thing at the moment.

Jiang Yuan also returned to his seat and continued to sift through fingerprints that were suitable for him. He deliberately looked for more blurry and less ideal fingerprints to compare because, in addition to ordinary forensic work, he could also use "Image Enhancement Technology (LV3)" to process fingerprint images.

In fact, the current fingerprint recognition system also requires image processing. Refinement, noise reduction, ridge line segmentation, ridge line extraction, and other operations are automatically completed by the computer in the background, so the forensic examiner does not need to worry too much.

However, at the current level of technology, the automated fingerprint recognition system cannot match the manual skill level of an expert.

Jiang Yuan directly pulled out a monitoring posture to make a fingerprint image. In just a moment, he selected a blurry image that looked like the bottom of a pot.

Jiang Yuan's computer host became restless as a result.

Awoo, awoo, awoo...

The computer host that Jiang Yuan was using had a decent configuration. It was a new computer purchased by the Provincial Department, but after being assigned to the forensic examiner position for more than two years, the graphics card and CPU had hardly been utilized.

At Jiang Yuan's request, the fan of the computer began to spin frantically, making a sound as if it was saying, "Why am I so hot? I'm scared."

Jiang Yuan stood up and waved the Zhonghua cigarette in his hand to Li Zemin next to him, inviting him, "Want to go outside for a smoke?"

Li Zemin also thought that Jiang Yuan's machine was noisy and was more interested in bumming a cigarette, so he immediately followed Jiang Yuan's footsteps.

The two of them left the office and took turns smoking, exhaling smoke into the air.

Jiang Yuan only smoked mouth cigarettes, and most of the time he held them with his hand, staring blankly ahead.

Li Zemin didn't care about that much and took a deep breath after finishing one cigarette before asking, "Why is your computer so loud?"

"I am doing image processing. Is it too loud?" Jiang Yuan replied.

Li Zemin understood a little and couldn't help but look at Jiang Yuan, saying, "Processing fingerprints with such a loud noise, your skills must be impressive."

"Yeah, I can do image enhancement for surveillance videos. I'm trying it out on fingerprints to see if it works." Jiang Yuan replied. "If it works, I'll ask someone to give me a separate place to process the images."

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"If you young people are powerful, unlike us, we were exhausted when we studied fingerprints... By the way, how far can you take the image with this technology of yours?" Li Zemin asked, feeling emotional."It's hard to say, the blurry image will become clearer, but it's targeted." Jiang Yuan didn't explain it too clearly because he hadn't really experienced it himself.

Overall, using image enhancement technology on fingerprints is a bit of overkill.

Whether it's suitable or not, he himself is not sure.

However, one thing is clear. During this period of fingerprint wars, the dozens of fingerprint experts present were actually in competition with each other.

When encountering a fingerprint, the first thing everyone thinks of is whether it has been seen by other fingerprint experts, and why it couldn't be matched. What is the reason for not being able to match?

If the reason for not being able to match is a matching problem, then it doesn't matter how well one's characteristic points are done.

If the degree of incompleteness of the fingerprint is too high, others may not be able to match it, and one may also not be able to match it.

It is precisely because of this that some fingerprint experts have proposed the strategy in the fingerprint war of "not doing it if it's too clear, not doing it if it's too blurry, and trying it out without being too light or too heavy."

It sounds simple, like one's own strategy, but upon careful consideration, it is actually a very valuable strategy.

In this situation, encountering fingerprints that are too clear is actually not worth doing. The same goes for fingerprints that are too blurry.

Only fingerprints that are not too light or too heavy are the focus of the work of many fingerprint experts. However, with so many fingerprint experts focusing on these fingerprints, the focus has become a difficult point.

Jiang Yuan's ability to handle relatively blurry images has made him unique.

Back in the office, Jiang Yuan's computer had stopped roaring, and the fan was spinning weakly, like a group of special traders who had just received guests, just trying to prove that they could still breathe, while also proudly showing off the fruits of their labor from the previous work.

Jiang Yuan looked at the fingerprint image on the screen, and there were now many more recognizable ridges.

Jiang Yuan nodded in satisfaction. Images are not afraid of being blurry, they are afraid of not having enough pixels. If they are all filled in, they become difficult to distinguish between real and fake in the field of criminal law imaging.

The pot-bottom-style image is actually simpler. Just process the pixels that can be processed and the rest are usable.

Jiang Yuan tried to choose the most accurate part of the image as support, then made characteristic points and ran the software again.

The first time, out of 100 fingerprints, none matched.

The second time, Jiang Yuan reselected the characteristic points and brushed out 200 fingerprints. When he saw the 47th fingerprint, he found a similar one.

Similar, not the same, because both fingerprints had been processed and there weren't many matching characteristic points.

But this situation is the most common in difficult fingerprints.For the same reason as before, if the characteristic points could easily match, there would be no need to send it to the provincial hall and enter the fingerprint battle.

Here, the computer's automated judgment has taken a backseat.

The core competitiveness of fingerprint experts will always be human judgment.

The current fingerprint recognition system is ultimately a numerical system, which evaluates values ​​by assigning values ​​to images rather than judging images.

To put it simply, the fingerprint recognition system recognizes endpoints and bifurcation points, which are effective for most feature points, but the automatic recognition system has no discrimination for some traditional feature points, such as small dots, hooks, forks, bridges, eyes, dotted lines, etc.

In addition, the direction of the ridge lines or the pattern of the ridges are not easy to understand, and the fingerprint recognition system is even less capable.

In the environment of the fingerprint battle, Jiang Yuan did not need to worry about the computer's characteristic points. He used the traditional Qingdao-style single-finger fingerprint analysis method to do the labeling, and then right-clicked and selected "identify as the same."

Ding dong.

In the office, the prompt sound of new messages rang again.

Li Zemin next to him instinctively looked at Jiang Yuan, only to see Jiang Yuan slowly opening a box of new Zhonghua cigarettes.