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What software does the police use to find criminals and spell characters?
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When investigating a case, the public security organs not only look for clues from fingerprints, blood, hair, DNA and other aspects, but also have other means of investigation, among which the portrait of a criminal is one. Portrait of criminals is a technique to describe and restore the appearance characteristics of criminal suspects according to eyewitness accounts. This technology provides powerful evidence and clues for the investigation of cases, and police all over the world have used this technology to solve a large number of criminal cases.

In recent years, with the development of science and technology, computer portrait technology has been rapidly popularized among policemen all over the world. Police science and technology departments at home and abroad have introduced various types of computer portrait and combination software according to the characteristics of their own races. In foreign countries, the portrait combination system "face" of INTEL QUEST company in the United States; The Los Angeles Police Department invented the "electronic portrait machine", and the police used the "electronic portrait machine" to solve a case of robbing a jewelry store in California. According to the portrait, the criminal was arrested in a village 50 kilometers away within three hours and the stolen money was recovered.

In China, there are many computer combination softwares. For example, the computer portrait drawing system developed by the Hong Kong Police Force in conjunction with the Chinese University of Hong Kong, the computer portrait simulation system developed by Shenzhen Gongnanshan Branch, the portrait simulation combination system developed by Beijing Jimingyuan Company, the criminal investigation portrait combination system developed by Chongqing Innovation Company, and the Tsinghua Tongfang portrait combination system.

The criminal portrait major of the Criminal Technology Center of Guangdong Provincial Public Security Department mainly uses ADOBE's image software PHOTOSHOP to paint criminals. PHOTOSHOP software has powerful image processing function. Compared with the general portrait combination software, it has the advantages of fast image combination and convenient modification. The software not only has outstanding advantages in criminal portrait, but also can be applied to skull image restoration technology.

The software has the characteristics of convenient modification and natural portrait effect. The main tools PHOTOSHOP uses for portraits are: moving, lasso, closing, deepening, lightening, deformation and so on. By using the above tools to collage and cut the photos reasonably, the portrait can be modified from the aspects of people's age and temperament, which overcomes the shortcomings of general portrait combination software in these aspects, achieves the same effect as ordinary photos, and makes it easier for witnesses to identify. To draw a portrait with PHOTOSHOP software, you need to be familiar with the face structure, master anthropological knowledge and have a solid modeling ability, otherwise it will easily lead to ambiguity, damage the memory of witnesses and fail to accurately display suspects.

The successful application of PHOTOSHOP portrait needs to collect a large number of portrait photos. Because this software modifies and edits portraits in portrait photos, it is necessary to establish a portrait database. The professional and technical personnel classified the photo data collected at ordinary times according to the face and hairstyle, and saved them into the computer through the input medium, forming a portrait database covering men and women of different ages all over the country, with nearly a thousand photos in stock, which laid a solid foundation for developing computer portrait work.

Because the information in the portrait database is relatively complete, after communicating with witnesses, the sorted photos will be selected, and the witnesses will be identified, and then the relevant numbers of the photos will be searched in the computer, and then the photos extracted by PHOTOSHOP from the national portrait database will be modified and edited. Finally, print or output in the form of digital photos and distribute them to relevant investigators, so that investigators can find people through images and serve the case investigation.

With China's accession to the World Trade Organization, more and more foreigners come to China to work, study and travel. Due to the mixed quality, the number of foreigners engaged in illegal and criminal activities in China will gradually increase. Due to ethnic differences, it is difficult for victims or witnesses to describe the appearance of foreigners, which often delays the investigation of cases by criminal investigation departments. In view of this situation, this major has established a database of world portraits of various races on five continents, which laid the foundation for quickly combining the faces of criminal suspects.

Since PHOTOSHOP software was used in the portrait of criminals in 65438-0997, computer portrait has played a more and more active role, helping to solve many serious cases. The following are successful cases of portrait and skull restoration by PHOTOSHOP and National Portrait Database in recent years:

Restoration of the skull image of the corpse in Shunde District, Foshan City from June 5, 2000 to 10.

The public security department found a woman's head and upper body in two places about one kilometer apart. Due to the high degree of head corruption, it is impossible to determine the identity of the deceased. After understanding and being familiar with the basic situation of the case, the technicians observed, recorded and digitally photographed all parts of the deceased. After forensic anatomy of the skull, the width of eyebrow arch, the height of cheekbone and the width of mandible were carefully observed, measured and photographed. Finally, the portrait photos similar to the skull data of the deceased in the national portrait database are used for technical processing. By determining the structural points, the professional characteristics and living habits of the deceased are comprehensively analyzed, and a targeted description is made to make the portrait as close as possible to the appearance characteristics of the deceased. The local police quickly identified the identity of the deceased and solved the case through the guidance of restored images.

The "8.5" Extraordinary Robbery in Jiujiang, Nanhai, Foshan

At about 1 1 in the morning of August 5, 2003, the victim Liu and his brother took 106 15000 Hong Kong dollars to a shop in Luopu Road, Jiujiang Town, Nanhai District, Foshan City to exchange Hong Kong dollars with the suspect. During the period, the suspect used the phone to lock the victim's shop and took away huge sums of money. Through the description of the victim, the police used PHOTOSHOP and national portrait database to describe the appearance of the suspect and quickly solved the case.

Zhaoqing "7 21"robbery and murder case

On July 2, 2002, Kloc-0, Zhao, an individual driver in Dasha Town, Sihui, Zhaoqing, disappeared after driving a white Jinbei van to downtown Zhaoqing. A few days later, his body was found near a freight yard, and vans, mobile phones, cash and other items were robbed. The police used a combination of manual portrait and computer portrait to show the main characteristics of the suspect through sketch, and then scanned the portrait into the computer and modified it with PHOTOSHOP. After seeing the portrait, the witness thought it was very similar to the suspect. The police used the portrait to catch the criminal quickly and solve the case in time.

The computer portrait system is easy to use, widely used and effective. In the portrait of criminals, besides being used for general computer combination, modification and editing, we can also use its different layer functions to compare and restore the portrait, with remarkable effect, which is one of the important ways to realize the strong police through science and technology. With the progress of science and technology, the computer portrait system will become more and more perfect and play a greater role in the detection of criminal cases.