Survey Office.

Lao Bai handed Lu Chuan a cup of tea.

"Don't be so desperate, take a break and smoke a cigarette to breathe."

Wu Kai sent a total of 56 pictures.

In the morning, Lu Chuan had already done almost half of the amount.

The clarity of most of the images processed by Lu Chuan has been very high, and they can basically be used as blacklist comparison standard pictures.

However, because the blurriness of some photos is too high, Lu Chuan applied the method of data conversion to process them, and the clarity of the photos is still not enough.

This kind of is difficult for a good woman to cook without rice, and Lu Chuan has no good way for the time being.

Separately divided into folders, Lu Chuan put together particularly good pictures that he had not processed.

Of course, Lu Chuan didn't even look at any of the cases involved in these photos.

Anyway, most of them are large-scale fraud cases, and there are some previous criminal cases where the camera captures a side face or a frontal portrait that is not very clear.

Looking at the remaining almost thirty photos, Lu Chuan took the tea handed over by Lao Bai.

"Well, take a break, there's no telling when you'll need to finish it."

Lu Chuan was a little surprised by the computer configuration sent by the Graphic Reconnaissance Brigade, which was really good.

Far exceeded Lu Chuan's expectations for an office computer.

In most cases, the work of the field survey office is not busy.

As long as there are no homicides, it is basically in a state where you want to touch the fish.

But if there is a homicide, continuous rotation is also the norm.

In Lao Bai's words, this is very bad for physical health.

Life is irregular, and it is easy to die early.

At noon, Lu Chuan didn't want to eat in the cafeteria.

Honestly, the food in the canteen of the criminal investigation detachment is still good.

There are three meals in the morning, noon and evening, and the noon is the most sumptuous, with five dishes and one soup, as well as two cold dishes.

But not at night, dinner is usually leftovers from noon.

Supper or something, never before, the supper of the criminal investigation detachment is instant noodles.

Braised noodles, broth, chicken stewed with mushrooms, rattan pepper and various flavors of instant noodles.

Lu Chuan didn't catch up with the good time, and I heard Lao Bai say that instant noodles can fill a wall when they are the most.

Not now, under special circumstances, that is, when a major case occurs, the canteen is on duty.

Although the master on duty can't make a few dishes and soup because of lack of manpower, at least making instant noodles can turn into boiled instant noodles.

Calling Liu Guodong and the others, Lu Chuan opened his own cayenne and ran to eat hot pot.

However, the weather in April can change for no reason.

The morning is still sunny, but the afternoon is cloudy and rainy.

Survey Office.

Lu Chuan swiped photos in front of the computer, and scenes of data flowed on the screen.

After a morning of familiarity, Lu Chuan became more and more handy, and the speed of processing pictures has increased a lot.

Lu Chuan also tried to write some plug-in software.

For example, for low-resolution photos, the image and data are directly converted and the data is automatically enhanced.

The result is no.

Because each photo has a different degree of blurring, the blurred parts are different.

In the process of data augmentation, Lu Chuan needs to make artificial judgments, and then choose different methods to deal with them.

Different methods in turn involve different mathematical transformation formulas.

It is not uncommon for multiple methods to be used interchangeably.

Sometimes it is even necessary to use some uncommon methods such as Laplace transform and wavelet transform to process some independent data.

The processing process of each image is relatively complicated, and it is very difficult to solve all the problems with a single plug-in.

It seems that there is no way to promote this method on a large scale for the time being.

Lu Chuan swiped at the boring computer screen

At the time of the data, Yang Sen stood in front of the window with some melancholy.

The rain was getting heavier and heavier, and soon the vision was blurred.

"What do you think?"

Lao Bai stabbed Yang Sen in the arm.

"It's nothing, it's just that it's raining so heavily outside, and it's not easy to handle this if it happens."

Well?

After Yang Sen finished speaking, Lao Bai's face changed.

"Crow's mouth, what a case, hurry up!"

The policeman should be a staunch materialist, but sometimes things are just as evil.

When you don't make a proposal, you don't have anything.

But as soon as it is mentioned casually, the case comes.

Janssen was clearly aware of what he had just said.

Syllable.

Smacked himself in the mouth: "Bah..."

Bang!

As a result, before the last word was finished, the office door was slammed open.

It's Liu Guodong.

Lao Bai and Yang Sen turned their necks a little stiffly, looked at Liu Guodong with a hurried face, glanced at each other, and said in unison: "There is a case?"

Liu Guodong was slightly stunned, he had just been notified, who told them?

"How do you know?"

Janssen now wants to give himself another slap in the face.

"What the hell is this?"

Lao Bai shook his head helplessly: "Is the case big?"

Liu Guodong nodded: "A corpse has been found on the bank of the Bailan River, we have to go over and take a look."

"Blanche?"

Janssen's face was even more unsightly.

Why did he just remember the case when he was looking out the window when it was raining heavily.

It's because if a case happens on a rainy day, a lot of evidence is very difficult to preserve.

The rain will take away the traces left by most of the murderers, and may even bring things that do not belong to the scene.

Three years ago, a homicide occurred in Tianzhou City, which was discovered after heavy rains.

The body was found lying in a roadside gutter.

After the rainstorm, all traces of the scene were wiped clean, except for a handkerchief in the pocket of the deceased.

In this day and age, who else uses handkerchiefs?

So, the police quickly used handkerchiefs to target a 60-year-old man in a nearby village during their visit.

Because the scene of the crime was very clean after being washed away by the torrential rain, all the traces left by the murderer were erased, and only a handkerchief that once belonged to the old man appeared in the deceased's pocket.

Then, logically, it is very likely that the old man is the murderer.

In addition, the old man and the deceased knew each other, they were still neighbors, and they had just quarreled with each other because of the courtyard wall.

In this way, the old man naturally became the biggest suspect in the murderer.

The old man lived alone, and no one proved that the deceased was not at home at the time of his death.

At that time, the police had already taken coercive measures against the elderly.

After all, judging by the scene, how could a handkerchief used by an old man appear in the pocket of the deceased for no reason?

But in fact, the old man's handkerchief had been lost three days earlier.

It was the heavy rain that washed the handkerchief that had been thrown in the gutter into the pocket of the deceased.

However, no one believed the old man when he said that he had lost his handkerchief.

If it weren't for the fact that the murder weapon had not been found, the case would have been closed.

Later, it was the Tianzhou City Criminal Investigation Detachment that found a little blood stain on the rice bag of the deceased's house.

Then the murder weapon was found in the rice bag, and by collecting fingerprints on it, it was confirmed that the murderer was the wife of the deceased.

Otherwise, the old man back then might have really been wronged.