civil forensic

Chapter 294
Jiang Yuan watched the video with the members of the duck team for a while, and he was familiar with the new surveillance system.

I have to say, watching videos with a few men, watching sports videos mainly focused on men, and without the ball, the rest is pure boredom.

Zhuang Wei operated the software to track the whereabouts of a criminal suspect, from the core area of ​​the county until he got on the car, the whole process...

Jiang Yuan looked super bored.

I have to say that the number of cases I have been working on has gradually increased, and cases that are too routine will consume a lot of willpower.

Jiang Yuan looked at it, couldn't help pulling out his phone, and looked at it.

I haven't watched it for a long time, and hundreds of messages have been posted in many groups.

"Shannan Fingerprint Exchange Group" also has a red [@] symbol.

Jiang Yuan clicked in and took a look inside, only to see @自己的actually Li Zemin.

As a comrade-in-arms who fought together in the province's fingerprint battle, Li Zemin can be said to be a clear stream among the provincial paper experts.

He and Jiang Yuan smoked Zhonghua together, shuttled through the major cases selected in the province together, and killed together randomly, from the first day of the first day to the fifteenth, the screams never stopped.

Jiang Yuan clicked on the "Shannan Fingerprint Exchange Group" with emotion.

Shannan Li **** is far away.Help me to look at this fingerprint, a fingerprint taken by a silly child from the flannel of the trunk, it is highly suspected that it is a criminal. 】

Changyang City-Shuidong District-Trace Inspection He Guohua: [My brother Jiang is too busy. In the past two months, we have solved five or six homicide cases in a row, and we can compare fingerprints in the middle. 】

Shannan Li Zemin: [I always pay ten for one, please ask Jiang Yuan to get a fingerprint, and I will do ten chores for him later. 】

Changyang City-Shuidong District-Trace Inspection He Guohua: [Brother Li, have you blown away. 】

Shannan Li Zemin: [However, I keep count.It's the same as the Jiangyuan Huazi I smoked back then. I wrote down how many of them. If I don't finish them, I will ask my son to return them. 】

Shannan Zhu Huanguang: [@长阳市-Shuidong District-门执He Guohua, you are a round older than Jiang Yuan, can you call me brother? 】

Changyang City-Shuidong District-Trace Inspection He Guohua: [Brother Zhu, you are right in criticizing me. I can’t mess up this seniority just because I’m in the group. We in Changyang City are now called Lord Jiang.Master Jiang, I'm sorry, I won't @你. "

Provincial Department-Fingerprint Post-Yang Ling: [Call Jiang Shen.Master Jiang was heard by the public security and was easily attacked. 】

Satisfied, Jiang Yuan read another hundred and ten messages, and waited for them to change the subject before forwarding the fingerprint sent by Li Zemin to himself.

Some things, if it is too difficult to obtain, it will be difficult to enjoy the glory and happiness it brings.

On the contrary, if you get it easily, the happiness in your heart will be stronger.

It's like demolishing relocated households, like demolishing the second generation.

Just like Jiang Yuan.

"Brother Zhuang, give me a computer. The one with better performance." Jiang Yuan holds the fingerprint, and feels that the imaging office is very suitable for processing fingerprints.

There is also a demand for image processing here, and the newly configured computers use the top configuration two years ago.

Zhuang Wei immediately gave up one to Jiang Yuan, entered the power-on password, and said with a smile: "The password is the alarm number."

"Okay. Thank you." Jiang Yuan was not surprised at all.It can be said that it is too common for the police to use the police number as a password. Many policemen only get rid of this broken problem after their wives check their mobile phones.

Simple fuzzy and incomplete fingerprints do not require any special software. Jiang Yuan put them in and processed them with Photoshop first.

Of course, Photoshop actually has nothing to do with simplicity.This thing is used well, any photo can be processed.

The so-called PS originally refers to the use of Photoshop to process.It's just that the photos that may have required experts to deal with in the past have been fooled by various software, so that people who don't know the technology and have no money can still produce a bunch of beautiful photos with PS.

However, the functionality of Photoshop has never been weakened. In the field of not only dealing with fat and thin black and white faces, its application scope is still extensive, but many people are not good at using it.

Too many and too powerful functions are beyond the reach of most image processors, and the difficulty is increased because of this. Many people will choose some software that plagiarizes the functions of Photoshop as a substitute.In addition, the genuine price of Photoshop is too expensive is also one of the problems.

"I'm dealing with a fingerprint, and a friend just needs it." Jiang Yuan explained to Zhuang Wei, and started to operate on the computer.

Zhuang Wei watched with sadness.

Just like what he saw before, when Jiang Yuan started to enhance the image, it was very difficult for him to understand it. This kind of - hey, Zhuang Wei suddenly found that he seemed to understand Jiang Yuan's operation a little bit.

In fact, the enhancement of fingerprint images is originally simpler than the enhancement of video images.

It's not just a question of image complexity, but also a question of familiarity.

Zhuang Wei has also been a policeman for more than ten years. He has seen thousands of fingerprints. He has a very clear and rich experience in his mind about what a fingerprint should look like.

Therefore, watching Jiang Yuan do image enhancement, he may not have an intuitive feeling, but watching Jiang Yuan do fingerprints, he suddenly understands the direction and goal of Jiang Yuan's operation.

Knowing where the destination is, and then looking at the process, the operating space inside is easy to understand.

What's more, Jiang Yuan didn't use particularly complicated methods.

He just needs to clean up the fingerprints.

He even said that he didn't have to deal with the whole fingerprint, just making part of it more beautiful and clear was enough.

With his LV3+LV4 fingerprint analysis method, even if there are only one-third of the basically clear fingerprints, Jiang Yuan can get enough information - the premise is that the compared fingerprints are complete and clear.But this time, the target fingerprint was a criminal, so there was no need to worry too much about it.

Therefore, super fingerprint analysis and super image enhancement are complementary.

Anyone who has used Photoshop knows that the software often sacrifices image processing.If only a small part of the image is processed, the difficulty will be reduced.

Therefore, it is easier for Jiang Yuan to get a small piece of very clear fingerprints.

And coherent fingerprints in pieces are actually more advantageous in terms of fingerprint comparison.

Zhuang Wei easily saw Jiang Yuan's strategy. At this time, he watched Jiang Yuan do image enhancement further, and he slowly saw in it.

Speaking of which, Zhuang Wei's foundation is not bad. He studied related majors in college more than ten years ago.Moreover, as we all know, knowledge related to digital image processing such as Fourier transform and discrete functions has not changed much in the past ten years.

In other words, as long as a person is diligent, studious and motivated, even if he is a little stupid, as long as he can read and understand discrete functions, play with power transformations, and master piecewise linear transformation functions relatively proficiently, it will cost several times more than others. If you have time to learn mathematics, you will not be easily eliminated by society.

Just like Zhuang Wei, in the past ten years or so, he didn't really spend much time studying, but this is mainly because he lost the learning environment.

Most people are like this. After starting to work, they start to output endlessly, because of pressure, because of responsibility, because of desire...

When everything is judged by quantity, 3000, 6000, 9000 or 12000 are only meaningful at the moment.

Jiang Yuan cut a path for Zhuang Wei.

During the time when Jiang Yuan was doing image enhancement, Zhuang Wei suddenly recalled a lot of knowledge that he had forgotten, and he even began to feel that being the squadron leader of the image reconnaissance squadron was meaningless.

Even the captain of the graphic investigation brigade - of course, if he can really do it, as the first four-eyed old duck, he still has to do his part.

"It's almost there." Jiang Yuan withdrew his hand.

Zhuang Wei's mind was also cleared: "Ah, finished?"

"Well, I'll compare the fingerprints, and maybe I need to correct them, but that's basically it." Jiang Yuan actually knew that Zhuang Wei was stealing his teacher, so he didn't care, and he also introduced a few words to Zhuang Wei by the way.

There are some things that you don’t need to steal if you know how to learn them, and you can’t even pour them in if you can’t learn them.

Throw the finished fingerprint into the software, mark the feature points only once, and find the same fingerprint at the 8th place.

This is a very high priority, as Li Zemin said, the fingerprints are indeed those of a former criminal.

I have to say that the judicial system in Shannan Province is really doing a good job in printing fingerprints.

Jiang Yuan clicked submit and took out his phone.

Zhuang Wei was a little dazed and asked, "Did you win the competition?"

"Correct."

"Hmm... a murder case?"

"Probably not, I didn't ask about the specifics of the case. I'll tell Brother Li." Jiang Yuan took out his mobile phone and dialed Li Zemin.

Li Zemin answered almost instantly.

Li Zemin's amplified laughter came from the receiver: "Hahahaha, I knew, Jiang Yuan, you do fingerprints every minute. Did you win the competition?"

"I won the competition, but it took almost two hours." Jiang Yuan said with a smile: "We have to be more accurate in the time, otherwise, you will have to say that I was negligent."

"How is it possible? From the first time you handed cigarettes to Huazi, I knew that I was committed to this brother."

"You are free to come on a business trip, please smoke a cigar."

"Good guy, just wait... Oh, I saw the fingerprints you submitted in the background, and the expert review is not over yet, so, I'll go and notify the arrest."

Although Jiang Yuan is also a fingerprint expert certified by the provincial department, he can do an expert review.But the fingerprints he made himself still need to be reviewed by others.

Domestic requirements for the accuracy of fingerprint evidence are still very high.

Jiang Yuan responded, and then asked, "What case is it?"

"It must be a homicide case. Do I have the nerve to ask you for a small case? It's just a current case. Looking at the scene, it should be a habitual criminal. The crime has escalated..."

Li Zemin said a few words, quickly hung up the phone, and went to report the situation.

Jiang Yuan put down the phone and smiled at Zhuang Wei, who was clearly heard next to him: "I really didn't expect it to be a murder case."

"That's true." Zhuang Wei smiled helplessly: "Who would have imagined that even a fingerprint expert can't do it. The fingerprints that need to be compared by others are a murder case."

hum.

Jiang Yuan's cell phone lighted up.

"Shannan Fingerprint Exchange Group" flashed red again:
Shannan Li Zemin: [Thanks to my brother Jiang Yuan for winning a fingerprint of the murder case in our city, spread the flowers! ]
Changyang City-Shuidong District-Trace Inspection He Guohua: [Jiangshen, YYDS, sprinkle flowers! 】

Shannan Zhu Huanguang: [The review has passed.Sahua]

Provincial Department-Fingerprint Post-Yang Ling: [Ningtai Jiangyuan, fierce flames. 】

(End of this chapter)