"It's a little difficult!"
Outside the appraisal room, Shen Ting explained:
"Although the fingerprints on the carbonized leather jacket are severely deformed, through some details, I am basically sure that they are from the same person as the deformed fingerprints on the bomb fragments.
The fingerprints on the bomb fragments should have come from the murderer's right middle finger.
I used new techniques to try to recover fingerprints from bomb fragments and carbonized leather.
However, the accuracy of the fingerprints recovered by both methods is very low.
The accuracy of fingerprints recovered from carbonized leather is only 30 to 40 percent.
Fingerprints on bomb fragments are less accurate after restoration because they have been shattered by the explosion and the rubber has been deformed by high temperature.
Only 20 to 30 percent!
If we can ensure that four or five of the feature points found from the two are correct, that would be great.
As we all know, in forensic identification, criminal cases usually require 12 fingerprint feature points to be consistent in order to be considered a successful match.
Shen Ting looked at the police officers:
"So, although I successfully extracted fingerprints from carbonized leather.
But as Director Su said, it is not enough for matching identification and further repair is needed.
I tried to combine the two fingerprints obtained successively, and used new technologies such as AI topological reconstruction and fingerprint ridge growth model, and barely completed the fingerprint restoration.
That is the fingerprint that everyone sees in the identification report.
The police officers at the scene could only roughly understand what Shen Ting said.
Looking at the fingerprints on the carbonized leather and bomb fragments alone can partially recover them, but it is not enough for identification;
But combining the two can further restore fingerprints!
Only Director Su could fully understand even the technical details that Shen Ting mentioned.
He pondered and said:
"If I remember correctly, the top trace detection laboratory at UTexco established a fingerprint model last year.
Only a partial fingerprint with 5 feature points needs to be analyzed to generate a complete fingerprint.
However, the error rate is as high as 57%!
The error rate will be reduced by combining multiple fingerprints, but it is also limited.
Consultant Shen, how accurate is the fingerprint you restored?
"The accuracy is pretty good!"
Chen Ting said: "I dare not say it is 100% accurate, but I can guarantee an accuracy rate of more than 95%."
More than 95%?
The accuracy is so high?
Director Su and the police officers were all shocked——
The accuracy rate of 95% is almost twice that of the top laboratories.
The key is that with such a high accuracy rate, there will be no problem in determining more than ten feature points and performing fingerprint matching.
"So, we really have the killer's fingerprints?"
"Now I just need to enter my fingerprint into the system for matching?"
"Based on the current situation, Consultant Shen's fingerprint identification skills seem to be much higher than those of the world's top experts!"
Qian Duoduo was particularly surprised: "Hurry up and do the fingerprint matching!
This time, maybe we can directly identify the murderer! "
Shen Ting beside him nodded in agreement: "If everything goes well, there should be no problem!"
"Director Su, I've marked the characteristic points on your fingerprint. Please log in to the system for a match!"
Director Su was stunned by the results of the appraisal. It was not until he heard Shen Ting's voice that he reacted and said quickly:
"Okay, okay, I'll match it right away!"
Director Su quickly logged into the fingerprint recognition system, entered his fingerprint, and started matching.
Looking at the words "Matching..." flashing on the screen, everyone couldn't help but feel uneasy.
After all, Shen Ting also said that the fingerprints were 95% correct, which was a very high accuracy rate, but it was not 100% after all, and there was still a possibility of error.
Besides!
Even if the fingerprints extracted and restored by Shen Ting are indeed correct, the database may not necessarily contain the murderer's fingerprints...
As time went by, the people waiting became more and more tormented.
According to usual estimates, everyone thought they would have to wait a few more minutes, but suddenly——
Beep~~
The computer screen turns green!
Director Su was so surprised that his voice trembled:
"Hey, is it really a successful match?
The owner of the fingerprint is named Zhou Huajia?
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