Chapter 85: Core

The office returned to calm, like a study room, occasionally someone showed off their love, which seemed to attract everyone's attention, but after the incident disappeared, everyone basically forgot about it.

The work in front of everyone is the most important thing at this time.

Jiang Yuan also returned to his seat and continued to screen fingerprints suitable for himself.

He specifically looked for fingerprints that were relatively blurry and in poor condition to compare.

Because compared to ordinary trace inspection, he can also use "Image Enhancement Technology (LV3)" to process fingerprint images.

In fact, the current automatic fingerprint identification system also needs to process images. Thinning, denoising, ridge segmentation, ridge extraction, etc., are all completed automatically in the computer background, and trace inspectors don't need to worry too much.

But at the current technical level, the automatic fingerprint identification system cannot compare with the manual level of masters.

Jiang Yuan directly pulled out the posture of doing monitoring, doing fingerprint images, and in just a while, selected a blurry picture that looked like the bottom of a pot.

Jiang Yuan's computer host was therefore restless.

Awoo awoo awoo...

The host Jiang Yuan is using now has a decent configuration, which is a new computer purchased by the Provincial Department. But after it was assigned to the trace inspection post, it had almost no vigorous exercise of graphics card and CPU for more than two years.

And under Jiang Yuan's request, its fan spun wildly, and the sound it made was like it was calling: Why am I so hot? I'm so scared.

Jiang Yuan got up, shook the Zhonghua cigarette in his hand to Li Zemin next to him, and invited: "Go outside for a smoke?"

Li Zemin also felt that Jiang Yuan's machine was noisy and wanted to rub a cigarette more, so he immediately followed Jiang Yuan's footsteps.

The two walked out of the office, pushed a cigarette to each other, and began to puff clouds and fog.

Jiang Yuan only smoked mouth smoke, most of the time he held it with his hand, and then looked ahead with dull eyes.

Li Zemin didn't care so much, sighed with satisfaction after smoking one, smoked another, and asked: "Why is your computer so loud?"

Jiang Yuan said: "I'm doing image processing. Will it be too noisy?"

Li Zemin understood a little, couldn't help but look at Jiang Yuan, and said: "Processing fingerprints with such a loud sound, then this technology of yours is a bit powerful."

"Well, I can do image enhancement like monitoring video, try it on the fingerprint map, and I don't know if it works."

"If it works, let someone get you a separate place, or find a separate place to process images." Li Zemin said with emotion: "You young people are really powerful, unlike us, who learned fingerprints and were tired to death back then... By the way, to what extent can your technology do the image?"

"It's also hard to say, the blurry will become clearer, but it is targeted." Jiang Yuan didn't explain it very clearly, because he hadn't really experienced it himself.

In general, the technology of image enhancement is still a bit of a sledgehammer for fingerprints.

Whether it is suitable, he himself can't explain clearly.

However, one point is very clear. During the fingerprint battle, dozens of fingerprint experts present are actually in a competitive relationship.

When encountering a fingerprint, everyone first thinks about whether it has been seen by other fingerprint experts, and why it failed to match? What is the reason for failing to match?

If the reason for failing to match is a matching problem, then it is useless to do feature points well.

If the residual degree of the fingerprint is too high, then others cannot match it, and it is likely that you cannot match it either.

Precisely because of this, some fingerprint experts proposed that the strategy in the fingerprint battle is "don't do clear ones, don't do too blurry ones, try the ones that are not light or heavy."

It sounds very simple, as if it is a strategy of spinning around, but if you ponder it carefully, it is actually a strategy of great value.

In such an occasion, encountering a fingerprint that is too clear is actually not worth doing. Fingerprints that are too blurry are also the same.

Only fingerprints that are not light or heavy are the focus of the work of many fingerprint experts. However, thinking about so many fingerprint experts staring at these fingerprints that are not light or heavy, the focus has become a difficulty.

Jiang Yuan's skill of being able to process relatively blurry images has therefore become unique.

Returning to the office, Jiang Yuan's computer had stopped hissing, and the fan turned weakly, as if it had just received a special trader of a group of people, just to prove that it could still breathe, and at the same time, the fruitful results produced by the work just now made it proud.

Jiang Yuan looked at the fingerprint image on the screen, and there were many more grooves that could be identified.

Jiang Yuan nodded with satisfaction. He is not afraid of blurry images, he is afraid of no pixels, all need to be filled, that is fake and difficult to distinguish in criminal science images.

The blurry pot-bottom image is simple, process the pixels that should be processed, and the rest are all usable.

Jiang Yuan tried his best to choose the accurate part of the image to support, then do feature points, and then run the software.

The first time, 100 fingerprints, no match.

The second time, Jiang Yuan re-selected the feature points, re-brushed 200 fingerprints, and when he saw the 47th, he found a similar fingerprint.

Similar but not the same, because both fingerprints have been processed, and there are not many places where the feature points overlap.

But this situation is the most common in difficult fingerprints.

It is still the same reason, if the feature points can easily overlap, why would they be sent to the Provincial Department and enter the fingerprint battle.

Here, the automatic judgment of the computer has retreated to the second line.

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

The current automatic fingerprint identification system is, in the final analysis, a numerical system. It does not do image judgment, but does numerical evaluation by assigning values to images.

To put it bluntly, the automatic fingerprint identification system identifies endpoints and bifurcation points. It is effective for most feature point discrimination, but for some traditional feature points, such as small points, small hooks, small forks, small bridges, small eyes, dashed lines, etc., the automatic identification system has no resolution.

In addition, such as the flow of lines, or the pattern of lines, which are things that are not very clear, the automatic fingerprint identification system is even worse.

In the environment of a fingerprint battle, Jiang Yuan doesn't have to worry about the computer's feature points, and marked it according to the traditional Qingdao-style single fingerprint analysis method, clicked the right button again, and chose "identify identity."

Ding-dong.

In the office, the prompt sound of new messages rang out in unison.

Li Zemin next to him subconsciously looked at Jiang Yuan next to him, and saw Jiang Yuan slowly opening a new box of Zhonghua cigarettes. ===== CHAPTER 86 =====