I "repair" cultural relics with a computer

"We place large cultural relics like Terracotta Warriors on a fixed disk fixed area. Two mechanical arms with the appearance data collection module with cultural relics on both sides of the disc. , To achieve the complete collection and rapid modeling of the appearance data of cultural relics. It takes more than 10 hours to complete this traditional manual method to complete this work, and the time of using this device can be shortened to about 10 minutes, which greatly improves the efficiency of digitalization of cultural relics. " On the 22nd, at the Laboratory Laboratory Laboratory of the National Local Joint Engineering Center of the Cultural Heritage of Northwestern University, Geng Guohua, director of the Central University and Professor of the School of Information Science and Technology of Northwest University, introduced the latest scientific research results of the team -the exterior of the cultural relics quickly collected modeling devices.

Geng Guohua has been engaged in innovative research in the fields of intelligent information processing and model recognition. Combined with the reality of the Shaanxi cultural relics province, her and her team worked hard to promote the deep integration of computer technology and cultural heritage protection, and achieved fruitful results in the fields of digital protection, virtual restoration, and the creation of Qin cavity intellectual media integration holographic display platforms.

Cultural relics have a comprehensive digital file

Statistics show that there are more than 100 million cultural relics in my country, and the digitalization of cultural relics is considered an important means of cultural relics protection. "Only by using modern detection technology to collect the external geometry, color, patterns, and information such as making materials and quality of the cultural relics, can we better protect the cultural relics for a long time. The important basis for repair. "Geng Guohua said.

According to reports, the newly developed cultural relics of Geng Guohua's team quickly collected modeling devices consisting of discs, two 1.5 -meter -long mechanical arm, cultural relics data collection module and computer processing software, etc., which have intelligent, coordinated, security Height and high accuracy four characteristics.

"The appearance data collection module of the cultural relics is composed of a structured light three -dimensional scanner and a high -resolution color camera. It is installed on the robotic arm. When the data is collected, it projected the structure light to the surface of the cultural relics through the scanner, and use the camera to take the structure of the structure of the structure of the structure. Decoding light to complete the complete collection of the three -dimensional appearance of the cultural relics. "Said Xu Yang, a member of the team member, the young teacher of the School of Information Science and Technology, Northwest University.

Xu Yang introduced that during the collection process, the cultural relics were placed in the non -rotating area in the middle of the disc, which always kept a static state to ensure the safety of cultural relics. The robotic arm is scanned and shot from the air. Compared with the traditional artificial scanning method, the interference and destruction of cultural relics is reduced to the maximum extent, and the speed and accuracy of the collection is greatly improved.

"Take the Terracotta Warriors as an example. The use of traditional methods and textures is independently collected, and a large number of post -processing time is needed. It may take more than 10 hours." Xu Yang said, "Quickly collect modeling devices with cultural relics, geometric shapes, and geometric shapes The texture is collected synchronized with texture. It can automatically complete the entire scanning step in about 5 minutes. Then through the computer processing software, it can automatically calculate the three -dimensional data on the surface of the cultural relics. In less than 10 minutes, the automatic shape and texture data of cultural relics can be achieved. Collection and synthesis. At the same time, the minimum space for collected can reach 0.1 mm, and the data accuracy is greatly improved. "Xu Yang said.

"The appearance of our cultural relics to quickly collect modeling devices will gradually be applied to institutions such as the National Museum of China, and the establishment of a comprehensive digital archives including the size, shape, and decoration of the cultural relics, and improve the digital efficiency of cultural relics in related museums." Geng Guohua said "In the next step, we will carry out the development of a new generation of modeling installations, strive to solve the digital needs of unable to move cultural relics such as sites and cave temples, and make new contributions to the inheritance of cultural relics, research and display."

Computer technology allows the princess to "reborn"

Like the appearance of cultural relics, the repair of cultural relics has been used for a long time. However, the traditional method repair cycle and low efficiency, in case of errors, can easily cause damage to cultural relics. How to use computer technology to help solve the problem of repair and allow technology to help cultural inheritance. Geng Guohua and team members have taken the lead in conducting digitalization of ceramic cultural relics and cultural relics related technical research in China.

At the beginning of the 21st century, the daughter of the Tang Dynasty's family Li Yan was discovered in Xi'an. At that time, the coffin had already decayed. Although the bones were still existed, the entire jaw part was missing. According to historical records, Li Yan died of illness in the twenty -four years (AD 736 AD) at the age of 25, and has been more than 1,200 years. In order to fully reproduce Li Yonggong, Geng Guohua decided to use the computer's cranial face recovery technology to make her "reborn".

"Let's first scan the CT scan and complete the digital information of the skull of Li Yan, and then use the computer software to repair the lack of the mandibular part to reconstruct its three -dimensional skull. Finally, check the skull database, according to the age of 20 to 25 years old. The average data of women's skull faces in the paragraph, determine Li Yan's soft tissue thickness, and establish a complete three -dimensional model of the skull surface, so that Li Yan's "true appearance" reproduces. "Geng Guohua told reporters.

Geng Guohua's team solicited more than 3,000 volunteers of different ages and gender to scan the CT CT, built the world's largest Chinese skull database, which provided strong support for the application of computer craniotomy restoration technology. In addition to reproducing Princess Li Yan's appearance, the team also realized the appearance of nearly a hundred ancient people such as the Qin Dynasty, the Han Dynasty, and the Tang Dynasty. At present, the research and application of the team's skull surface restoration technology is at the international leading level.

In addition to the recovery of the craniotomy, Geng Guohua's team also used computer technology to help the cultural relics repair. Taking Terracotta Warriors as an example, the team scan the fragments of the Terracotta Warriors Pit, master the size and shape of the fragments, form a database, and use digital technology to accurately model them. The restoration scheme and steps are fully presented on the computer to guide the restoration of terracotta warriors and horses to improve efficiency. At present, Geng Guohua's team has completed the virtual repair of a number of terracotta warriors such as nail figurines and right horses. In 2009, the team's digital protection research results were officially included in the rules of archeological restoration work, and the traditional protection methods were implemented in parallel, which was highly recognized by the industry.

Information means allowing the audience to "on stage" to perform Qinqiang

Qinqiang is one of the oldest dramas in my country. In 2006, it was included in the first batch of national intangible cultural heritage lists. Essence "In the face of this situation, we decided to try the combination of information technology with Qinqiang art to create a platform for the integration of Qinqiang intellectual media to make the holographic display platform, so that Qinqiang art is nice and beautiful. Like, young people love to watch, "Geng Guohua said.

After more than a year of polishing, Geng Guohua's team comprehensively used artificial intelligence, VR/AR, and holographic projection technology to successfully develop the Qin cavity holographic theater integrating intellectual media. "Based on the traditional opera theater, we use 3D holographic projection technology to create virtual space -time, so that the audience has a visual immersion. Its biggest advantage is that the audience does not need to wear 3D glasses, and we can browse three -dimensional three -dimensional images at multiple angles. "Team member, Northwestern University Cultural Heritage Digitalization National Local Institute of Engineering Center Academic leader, Professor Zhou Mingquan, said.

Zhou Mingquan introduced that the separate green screen area can also provide interaction services for the audience, allowing the audience to interact with the stage and actors, and realize the virtual actors and the audience performed on the same stage. Through augmented reality technology, the audience can also allow the audience to experience the "excellent" of Qin cavity such as blowing fire and changing their faces.

At present, Geng Guohua's team has produced new technologies to calculate the new technologies of holographic media services, and has produced audiences such as "Three Drops of Blood", "Haojiazhuang" and "Flower Pavilion Meeting". The next step will be developed. New ways of opera art holographic exhibition.

"Take the mobile theater as an example. Just like the screening of movies, the small theater we created can easily enter the urban community and the vast number of rural areas, so that the people can listen to the play and 'acting' at their doorsteps, so that more enthusiasts can participate. Create opportunities for the development of Qinqiang art and enhance vitality, so that the ancient Qinqiang art has glowed with new glory. "Geng Guohua said.

Source | Shaanxi Daily

Wen, Picture | Huo Qiang

Edit 丨 Yang Lina

Review 丨 Yifu

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