Chapter 85 Core

The office returned to calm, just like a study room. Occasionally, someone showed affection, which seemed to attract everyone's attention, but after the incident disappeared, everyone would basically forget about it.

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

Jiang Yuan also returned to his seat and continued to select fingerprints suitable for him.

He deliberately looked for more blurred fingerprints with poor conditions for comparison.

Because compared with ordinary trace detection, he can also use "image enhancement technology (lv3)" to process fingerprint images.

In fact, the current fingerprint automatic recognition system also needs to process images. Refinement and denoising, ridge segmentation, ridge extraction and other operations are all automatically completed in the background of the computer, and trace detection does not need to worry too much.

But with the current technical level, the automated fingerprint automatic recognition system is impossible to compare with the manual level of masters.

Jiang Yuan directly pulled out the posture of monitoring and made a fingerprint image. In just a short while, he selected a blurred picture that looked like the bottom of a pot.

Jiang Yuan's computer host became restless because of this.

Aoaoao...

The host computer that Jiang Yuan is using now has a pretty good configuration. It is a new computer purchased by the provincial department. But after it was assigned to the trace inspection post, it has hardly used the graphics card and CPU for more than two years.

At Jiang Yuan's request, its fan started to spin frantically, and the sound it made was like shouting: Why am I so hot? I'm so scared.

Jiang Yuan stood up, waved the Zhonghua in his hand to Li Zemin next to him, and invited him: "Let's go outside to smoke a cigarette?"

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

The two left the office, pushed each other a cigarette, and started puffing.

Jiang Yuan only smoked the cigarette, and most of the time he held it with his hands, and then looked ahead with lifeless eyes.

Li Zemin didn't care about that. He sighed with satisfaction after smoking one cigarette, then smoked another one and asked, "Why is your computer so noisy?"

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

Li Zemin knew a little bit, and couldn't help looking at Jiang Yuan, saying, "The fingerprint processing is so loud, then your technology is quite powerful."

"Well, I will do image enhancement like surveillance video, and try it on fingerprint images. I don't know if it works yet."

"If it works, let someone make a separate place for you, or find a separate place to process images." Li Zemin said with emotion: "You young people are really powerful, unlike us, who were exhausted from learning fingerprints back then... By the way, to what extent can your technology make images?"

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

In general, the image enhancement technology is still a bit of an overkill when used on fingerprints.

He himself couldn't say whether it was suitable.

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

When encountering a fingerprint, the first thing everyone thinks of is whether it has been seen by other fingerprint experts, why can't it be matched? What is the reason for not matching?

If the reason for not matching is a matching problem, then no matter how good your feature points are, it will be useless.

If the fingerprint is too incomplete, then others can't match it, and you may not be able to match it.

Because of this, some fingerprint experts proposed the strategy in the fingerprint battle as "don't do clear ones, don't do too blurry ones, and try neither light nor heavy ones."

It sounds very simple, as if it is a strategy that you are spinning around, but if you think about it carefully, it is actually a very valuable strategy.

In this situation, encountering a fingerprint that is too clear is actually not worth doing. The same is true for a fingerprint that is too blurry.

Only fingerprints that are neither light nor heavy are the focus of many fingerprint experts' work. However, think about so many fingerprint experts, all staring at these fingerprints that are neither light nor heavy, then the focus becomes the difficulty.

Jiang Yuan's ability to handle relatively blurry images has also become unique.

Back in the office, Jiang Yuan's computer had stopped roaring, and the fan was turning weakly, like a special trader who had just received a group of people, just to prove that he could still breathe, and tried hard to breathe. At the same time, because of the fruitful results of the work just now, it was proud of it.

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

Jiang Yuan nodded with satisfaction. The image is not afraid of being blurry, but it is afraid of not having pixels. If all pixels are filled, it will be difficult to distinguish between true and false in the criminal science image.

The image with a blurry bottom is simpler. Just process the pixels that can be processed, and the rest are all usable.

Jiang Yuan tried to choose a more accurate part of the image as support, then make feature points, and then run the software.

The first time, 100 fingerprints were not matched.

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

The reason why they are similar but not identical is that both fingerprints have been processed and the feature points do not match much.

But this situation is the most common in difficult fingerprints.

It is still the same reason. If the feature points can easily match, why send them to the provincial department and enter the fingerprint battle.

Here, the computer's automatic judgment has taken a back seat.

The core competitiveness of fingerprint experts is always human judgment.

The current fingerprint automatic recognition system is ultimately a numerical system. It does not judge images, but makes numerical judgments by assigning values ​​to images.

To put it bluntly, the fingerprint automatic recognition system recognizes endpoints and bifurcation points. It is effective for distinguishing most feature points, but the automatic recognition system has no ability to distinguish some traditional feature points, such as small dots, small hooks, small crosses, small bridges, small eyes, dotted lines, etc.

In addition, things such as the direction of the lines or the pattern are not very clear, and the fingerprint automatic recognition system is even worse.

In the environment of the fingerprint battle, Jiang Yuan did not need to worry about the computer's feature points. He marked them according to the traditional Qingdao single-finger fingerprint analysis method, and then right-clicked and selected "identify the same".

Ding Dong.

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

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