Struggler Zheng Youth | Cao Xun: Create the "Fire Eye Golden Eyes" for identifying hidden dangers of chemical production

Cao Xun drawing: Yangmei Interactive

Not long ago, the "Super Moon" was overnight again. That night, Xiaoyu, a citizen of Nanjing City, Jiangsu Province, was attracted by the big and round moon as soon as he looked up. He quickly took this rare beauty with his mobile phone and sent it to the circle of friends to share.

Today, using only a small mobile phone can take the outline of the ring -shaped mountain surface of the moon. But in the past, if you want to take these, you need a professional camera and telephoto lens. Behind this is the credit for calculating the camera technology.

At Nanjing University, there is such a "chase" who studied the calculation of the camera -Cao Xun. He is one of the first prizes of the youngest national technical invention award; he captured the dynamic spectral imaging problem and applied the research results to the chemical production park ...

When you are fledgling, you will be among the national awards team

In 400 BC, Mozi first discovered the principle of small hole imaging and recorded the process of light and shadow imaging. Since then, humans have begun their own "chasing journey". From film cameras, digital cameras, and cameras, mobile phones that can be taken anytime, anywhere, and human recorded images are constantly being updated.

Calculation camera is a emerging discipline that has only emerged in the century. This is a cross -research field of multi -disciplinary knowledge such as comprehensive electronics, optics, vision, and graphics. Initially, Cao Xun was also a "foreigner", "but I want to make an original thing, something that others have not done."

What are the differences between traditional cameras and computing cameras?

Cao Xun's example is that traditional photography and cameras are not available in viewing and resolution, that is, the resolution of the field cannot be guaranteed. After getting a panoramic picture with calculating camera technology, you can choose any position that you want to see more clearly to zoom in.

Ten years ago, 29 -year -old Cao Xun became a member of the first prize team of the National Technology Invention Award with the light field shooting matrix technology.

Use the light field to shoot matrix technology to realize the 3D real digitization of the character. As soon as this technology was born, it was used in the first real -life CG movie in China. The film and television company used it to accurately and quickly perform three -dimensional shooting and reconstruction. Earlier, only Hollywood in the United States mastered this technology.

At the same time, this technology can be widely used in many fields such as industrial testing, medical imaging, cultural relics protection and reconstruction, and e -commerce.

"About 80%of the information obtained from humans comes from vision. To capture the visual information of the real world comprehensively and accurately, we need to continuously break through the limitations of classic imaging models and camera hardware." Cao Xun said.

Promote the leap from "quiet" to "motion" to promote spectral imaging

After the award, Cao Xun began to study the dynamic high -spectrum imaging technology in the blank area.

"Spectrum imaging technology is widely used. For example, satellite spectrum cameras can find minerals, analyze geology, predict food production, etc." Cao Xun said, but traditional spectral imaging can only take static images.

After more than ten years of hard work, Cao Xun proposed the spectral video imaging method (PMVIS) of the prism -covering the model and the development of a series of spectrum cameras and devices, which promoted the leap from "quiet" to "motion". This achievement is one of the three representative technologies, which is called spectral video imaging by international authoritative research institutions, and can be applied to the fields of face live test, environmental protection, epidemic prevention and control and other fields.

In order to bring the world's cutting -edge technology, Cao Xun visited many industries and departments and ran through hundreds of chemical production parks across the country.

There are many safety production accidents caused by chemical gas leakage every year in my country. For example, the "3.21" explosion accident in the sibling water in Jiangsu has caused nearly 2 billion yuan in direct economic losses and huge personnel casualties. Caused by chemical gas leakage. However, the leakage of chemical gases is often invisible to the naked eye. Most of the existing testing equipment can be powerless, but using spectral imaging can be "see".

Cao Xun led the scientific research team to a common chemical leakage gas, and specifically designed a spectral intelligent early warning monitoring system. It can not only identify different chemical gas, but also track its diffusion trajectory, realize the rapid perception and real -time monitoring of gas leakage, and become the identification of the chemical industry industry "Fire Eye Golden Eyes" of hidden dangers.

At present, this technology and system have been successfully applied to large -scale chemical parks and key enterprises in more than 10 provinces and cities across the country.

Earlier this year, Cao Xun's team was reported again: They combined the research foundation of Nanjing University in terms of super structure to develop a super -structured lens light field spectrum 4D imaging technology.

"We are studying the third -generation spectral imaging technology, which can make the spectral camera smaller and better, and even put it into the mobile phone." Cao Xun said that all these technical achievements are very willing to share it to share Give industry users and promote industrial technological progress.

(Source: Science and Technology Daily Reporter: Zhang Ye)

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