Mu Yuan was stunned, like this...... Okay?

Even if you have sores, you can't have sores all over your face, right? If you do this, can the high-speed rail station let you go?

He immediately raised his own questions.

Team Liu said: "She only covered half of her face, and the staff recognized it with the naked eye, it should be herself." After all, half a face can't be authenticated with face recognition. ”

Mu Yuan thought seriously about this question in his mind.

Showing only half of his face can be sure that it's me? This is certainly an unreliable inference.

If this recognition is made by face recognition technology, it still has some credibility. But if it is recognized by the naked eye, it is doubtful.

Recognizing a person's appearance is inherently an act with subjective consciousness, just like looking at a child who looks like his parents, some people will feel like it, and some people will feel like it.

To put it bluntly, even if you are holding an ID card and you are standing next to you, you may not be able to match the photo on your ID card with the number of the person.

This is still the whole face exposed in front of the eyes, and if you cover half of it again, it will be even more unreliable.

Therefore, the information obtained from the high-speed rail station is not enough to be accepted.

But in addition to this news, how to judge whether the other party has returned to Xihua City?

"Is there any surveillance at the scene?" Mu Yuan suddenly asked.

"Of course there is. Liu said.

This is a fact, how can the entrance and exit of the high-speed rail station not be monitored?

Mu Yuan immediately said: "Immediately let someone go and transfer this monitoring back." In addition, please ask Ha Cheng to help analyze Wang Fuxiang's daily life trajectory and see if you can find a surveillance video with its complete image. ”

"What do you want to do?" asked Brigade Liu, who hesitated.

Mu Yuan said: "Let's first use the surveillance video obtained from the high-speed rail station to see if we can identify whether this person is Wang Fuxiang himself." If you can tell the difference, then there is nothing to say, and if you can't, you have to find another way. Alone, she can cover her face, but she will never deliberately change her walking posture. To determine whether this person is Wang Fuxiang, we can compare whether the gait of this person entering and exiting the high-speed rail station is consistent with Wang Fuxiang himself. ”

"This technology...... Is it reliable?"

Mu Yuan said: "Whether the technology is reliable or not, I can't say for sure now, but my eyes are quite reliable." ”

Team Liu suddenly smiled and said, "I'm relieved to have your words." ”

Mu Yuan grinned, a little panicked in his heart.

After all...... He didn't know the bottom of his own mind.

That's right, he also bragged once before, if he found out the identity of the suspect based on the analysis of the pedestrian's gait, but in fact, he used the time rewind charm to determine the identity before saying so.

But this time is different, too much time has passed, and the time rewind charm is useless.

But the matter is here, you can't just stop taking it because you don't have a time rewind charm, right? It's tricky, but if you don't try, how do you know you can't?

He is not completely unconfident, and the fact that others cannot distinguish the difference in gait through the naked eye does not mean that he is not good.

Big deal, drink a bottle of brainstorming potion.

One bottle is not enough, another bottle, anyway, that thing has a lot in my backpack.

The matter has been settled in this way, and it will be determined whether Wang Fuxiang will return to Xihua City as the most core reconnaissance mission at present.

As for what to do next after this point was determined, everyone also had a preliminary discussion.

Of course, it is impossible to come up with a charter, after all, there are too many variables in the process of reconnaissance, and it is more of a test of the investigator's ability to adapt to changes.

......

The efficiency of the public security system is quite high, especially when it comes to cases that may cause personal injury or death.

In just a few hours, two videos of about ten minutes had already been put into the computer in front of Mu Yuan.

He was a little panicked, but he didn't show it.

"Team Liu, do you have any instant noodles? I'm worried that I'll be hungry for a while. Mu Yuan grabbed his scalp and looked very distressed.

Liu Guangtou knew Mu Yuanke very well, and when he heard this, he smiled and said, "Don't worry!

Mu Yuan immediately smiled happily.

Turning on the computer, Mu Yuan first observed these two videos.

The portrait in the surveillance video, after all, is different from the professionally shot video portrait, there is no close-up, and the judgment of the portrait in the surveillance video can only stay in the stage of fuzzy judgment.

After watching it for a long time, Mu Yuan was able to tell that the two people in the picture were both women - uh, he couldn't judge whether they were women or not, at most he could say that the two looked like women, and their height and body shape should be similar.

But whether it's the same person or not, Mu Yuan really can't judge.

However, Mu Yuan didn't have much to lose, which was expected.

Soon after, Mu Yuan smiled happily.

It wasn't that he saw any key clues, but that two men had finally arrived carrying a large pile of food.

Not only instant noodles, but also bread, milk, and instant rice, it can be called a hodgepodge of instant food.

Seeing that he was so well prepared, Mu Yuan went to the toilet, took a bottle of brainstorming medicine very peacefully, and then returned to the computer.

Opening the two videos again, Mu Yuan concentrated all his attention, discerning the subtle differences in the videos.

Well, there's nothing wrong with it, it's a subtle difference, because the big differences are too obvious: clothing, environment, etc......

The only thing that Mu Yuan can identify is only, and can only be, the gait of the characters in the two videos.

Legs, knees, feet?

An action can be broken down into many details.

And one detail can have many differences.

Two steps a person takes at different times may be different, let alone in two different videos – video surveillance can be captured from different angles and draw completely different observations.

And this is also the most troublesome point of doing gait analysis.

This is not to say that it is troublesome to do this kind of gait analysis with the naked eye, but it is also a big difficulty to use computer graphics analysis.

emmm...... Gait analysis of a person with the naked eye has never been done before, and even in the foreseeable future, this will not be possible.

It's not that the human eye can't see the differences between gaits, but the brain can't summarize these differences and then tell whether the two gaits are one or two.

It can be said that relying on the human eye to do gait analysis does have a ridiculous feeling.

In front of anyone, he would feel that this is an impossible task.

Well, there's nothing wrong with it, Mu Yuan feels this way now.

Even if he had taken the thought storming potion, even if he felt clear enough to go to heaven and stand shoulder to shoulder with the sun, he really couldn't see what the subtle difference in gait meant.

That's right, in his current state, he can really see the subtle differences between gaits.

But it is impossible to conclude how these nuances are caused, whether they are differences in the physiological structure of people, or whether they produce different responses in different environments of the same person.

He wasn't indifferent, at least, he understood something.

In order to achieve the goal of gait analysis, you must have a clear understanding of the structure of the human body.

Although he now has a very good understanding of the structure of the human body, after all, the autopsy technique is not given in vain.

But the knowledge of human structure involved in autopsy is more of a static thing, even a ...... Something in a state of death.

Gait analysis, on the other hand, is the study of the movement laws of the vivid and dynamic body structure.

The two are not comparable.

From this point of view, it is basically unrealistic for Mu Yuan to use his sharp eyes to discover the difference between the target gait in the two videos.

Although he had already guessed this outcome, Mu Yuan was a person who refused to admit defeat.

He wanted to try hard!

Anyway...... The effects of the brainstorming potion haven't been over yet.

Anyway...... I still have enough brainstorming potions in my backpack.

Anyway...... There are still a lot of chivalrous values on his account.

The case is in your own hands, you can't just leave it at that, right?

He didn't believe it, and he couldn't find out the hidden clues.

He even thought about it, if this didn't work, he would directly use the thought storming medicine and energy medicine to get the knowledge of liver and human kinesiology.

Any technology, as long as you let yourself in the door, the rest is very simple.

Big deal, redeem the skill upgrade card.

That thing is a little more expensive, but I now have more than 500 chivalrous points in my account, which is not false at all.

Although I don't have a low-level card like an intermediate skill upgrade card right now, the skill upgrade card is backwards compatible.

In other words, your own master-level skill upgrade card can completely upgrade a beginner skill to the master-level level.

The only drawback is that the exchange price is a little higher.

But this is also negligible, he has compared the difference between the master-level skill upgrade card and the expert-level skill upgrade card, and the chivalrous value required for redemption is only 10 points.

10 points of chivalry? It's a drizzle for Mu Yuan now.

So, this road works.

Mu Yuan's eyes widened, and he observed the images in the video almost frame by frame.

That meticulous energy has long surpassed the state of college roommate Lao Wang watching small movies.

Of course, this kind of concentration is not without a price, it didn't take long for a large bag of bread to enter Mu Yuan's belly, and it didn't take long for the three cartons of pure milk to disappear directly.

Li Ju and the others stood quietly aside, and no one dared to speak loudly, for fear of disturbing Mu Yuan's thoughts.

Even in their opinion, Mu Yuan was obviously just eating, but what if Mu Yuan was eating just to find inspiration?

As the food in front of him decreased one by one, a trace of fatigue gradually appeared in Mu Yuan's eyes.

He suddenly hesitated, didn't he...... After all, in the systematic introduction of this potion, you can prepare food and bed......

However, the system did not say that this potion could not be used with energy potions.

Although he had such thoughts, Mu Yuan had no bottom in his heart.

He wanted to try, but he didn't dare.

After all...... He didn't want to die suddenly - there were enough cops on the police front who died suddenly due to overwork, and he didn't want to be the +1 guy.

Seeing that the effect of the medicine was about to pass, he had watched these two videos three times, two of which were played frame by frame.

Does this mean...... Failed yourself?

Just when Mu Yuan's heart was full of depression, a system prompt suddenly popped up.

"Congratulations, you've worked hard to understand the basics of video analysis. ”

Mu Yuan's eyes suddenly suddenly, this ...... What's going on?

Isn't what you want to be similar to the technology of human kinematics? What does it mean to give a video analysis technique?

I watched the video, although I watched it in a state of brainstorming, I actually got the video analysis technology, this luck, it's too European, right?

Although Mu Yuan knew that this video analysis technology should be very powerful, he also had some hesitation.

Obviously, after this technology is upgraded, it will definitely be of great help to him to solve the case through video investigation in the future, but he has no idea whether he can help him solve the problem in front of him.

At the end of the day, gait analysis is not essentially video analysis technology, even if it doesn't involve video, you can use gait analysis technology to get two people walking in front of you.

From the perspective of investigation and solving crimes, gait analysis must be a kind of video analysis.

Even if this technology has not yet been fully formed, there are not many successful cases, but it does not prevent major security technology companies from taking it as a major research direction.

While thinking about it in my head, I didn't forget to analyze the knowledge about video analysis technology in my head.

And then...... He was disappointed.

Sure enough, through self-taught video analysis technology, there is really only the part that I have mastered.

And the reason why this primary video analysis technology can be successfully understood by Mu Yuan is not only the effect of watching videos with the brainstorming medicine just now, but also all the experience in video surveillance accumulated in the past six months.

His state just now is just a kick in the door.

In the mind, new knowledge is not stuffed into the system.

Mu Yuan hesitated slightly, and easily exchanged for a master-level skill upgrade card.

90 chivalrous points, a ten-in-a-row draw is gone.

But Mu Yuan doesn't have much entanglement, chivalrous value, the old doesn't go to the new and doesn't come, it's true that ten consecutive draws are very cost-effective, but the items or skills drawn may not be useful to the current self, from this point of view, improving video analysis technology is the best choice.

He wants to use this master skill upgrade card to see if the video analysis technology includes gait analysis technology in the system's knowledge base.

As soon as the thought moved, the master-level skill upgrade card turned into a bits of stars and disappeared into the package interface.

The video analysis technology, which was still rudimentary, has been quietly upgraded to the intermediate level.

But for Mu Yuan, this was not silent, he felt that his brain had been hit and something was forcibly stuffed.