Scientific and technological appraisal to avoid "look away"
At present, the identification of ancient ceramics in China is mainly based on the identification of “eyesâ€â€”according to the characteristics of artifacts such as shape, ornamentation, and identification, the authenticity is determined. According to the view of the Academy of Science and Technology of Shanghai Institute of Optics and Fine Arts, for the unearthed cultural relics, comprehensive judgments can be made through the combination of artifacts and historical and cultural information reflected in tombs. For handed down articles, ophthalmology relies on the personal experience of the appraiser. Subjective is stronger.
It is understood that the simulation of the ancient ceramics market is increasingly high, and the emergence of "new glazes on old tires" is difficult to see. Some highly antique porcelain often make the appraisal expert take a look, and the famous auction house of international famous cultural relics has also made "Oolong Incident" many times. Academician Qian Fuquan said that in the process of identification, the situation of “look at the eye†is unavoidable, and it is necessary to obtain the authoritative conclusion. In addition to ophthalmological assessment, some high-tech means should also be adopted.
How do you use space-based remote sensing technology to identify artifacts using high-tech "eye-catching eyes" to identify them? Academician Guo Jingkun of the Shanghai Institute of Ceramics, Chinese Academy of Sciences believes that the content of trace elements and isotope ratios in ancient ceramics are determined by the conditions for the formation of raw minerals. Just like human innate fingerprints, they cannot be forged. Modern cultural relics appraisal instruments precisely measure these data and perform “fingerprinting†of ancient ceramics to determine their age and origin.
However, many current scientific and technical appraisal methods need to be sampled from cultural relics, even if a small amount of powder is extracted, it is also a damage to the cultural relics. Is there a non-destructive identification technology? Academician Xue Yongqi of the Shanghai Institute of Technical Physics of the Chinese Academy of Sciences introduced a hyperspectral technique that could be applied to the identification of ancient ceramics. It was originally used for space remote sensing. It can not only acquire the image of the item, but also measure the spectrum and reveal the various components that make up the item. As long as they are converted, researchers can use this technology to develop a "staring imaging spectrograph", "filming" the ancient ceramics, and making the artifacts without any damage to the porcelain.
Another high-fidelity acquisition imaging technology independently researched and developed by Chinese scientists will also provide support for the non-destructive identification of ancient ceramics. Lu Dongming, a professor at the School of Computer Science and Technology at Zhejiang University, said that the photographs taken with this technique are much higher in resolution and pixels than conventional photographs, and can accurately display extremely fine texture images of ancient ceramics. After acquiring these microscopic images, the researchers can compare them with the porcelain texture images of various generations and origins in the database to identify the “positive†of the porcelain being tested.
Establish a unified standard to eliminate "chaos"
Experts at the meeting believe that while developing non-destructive technology appraisal technologies, national standards for the appraisal of ancient ceramics should be established as soon as possible to eliminate all kinds of "chaos" in the collection and appraisal markets.
Chen Kelun, deputy director of the Shanghai Museum, said that at present, the ancient ceramic technology appraisal technologies developed by various research institutes in China lack unified standards. Different units have different test methods, and the identification results are expressed differently. This allows collectors to make multiple machine tests and issue a large number of certificates. On the other hand, due to the lack of data sharing, the reliability of the identification results will inevitably be discounted. Chen Kelun proposed that cultural relics and scientific and technological circles in China should actively carry out multi-disciplinary cooperation and use scientific and technological methods in combination with traditional ophthalmological appraisals to establish a set of national standards for the identification of ancient ceramics and ensure the authoritative scientific nature of cultural relics appraisal.
At present, the identification of ancient ceramics in China is mainly based on the identification of “eyesâ€â€”according to the characteristics of artifacts such as shape, ornamentation, and identification, the authenticity is determined. According to the view of the Academy of Science and Technology of Shanghai Institute of Optics and Fine Arts, for the unearthed cultural relics, comprehensive judgments can be made through the combination of artifacts and historical and cultural information reflected in tombs. For handed down articles, ophthalmology relies on the personal experience of the appraiser. Subjective is stronger.
It is understood that the simulation of the ancient ceramics market is increasingly high, and the emergence of "new glazes on old tires" is difficult to see. Some highly antique porcelain often make the appraisal expert take a look, and the famous auction house of international famous cultural relics has also made "Oolong Incident" many times. Academician Qian Fuquan said that in the process of identification, the situation of “look at the eye†is unavoidable, and it is necessary to obtain the authoritative conclusion. In addition to ophthalmological assessment, some high-tech means should also be adopted.
How do you use space-based remote sensing technology to identify artifacts using high-tech "eye-catching eyes" to identify them? Academician Guo Jingkun of the Shanghai Institute of Ceramics, Chinese Academy of Sciences believes that the content of trace elements and isotope ratios in ancient ceramics are determined by the conditions for the formation of raw minerals. Just like human innate fingerprints, they cannot be forged. Modern cultural relics appraisal instruments precisely measure these data and perform “fingerprinting†of ancient ceramics to determine their age and origin.
However, many current scientific and technical appraisal methods need to be sampled from cultural relics, even if a small amount of powder is extracted, it is also a damage to the cultural relics. Is there a non-destructive identification technology? Academician Xue Yongqi of the Shanghai Institute of Technical Physics of the Chinese Academy of Sciences introduced a hyperspectral technique that could be applied to the identification of ancient ceramics. It was originally used for space remote sensing. It can not only acquire the image of the item, but also measure the spectrum and reveal the various components that make up the item. As long as they are converted, researchers can use this technology to develop a "staring imaging spectrograph", "filming" the ancient ceramics, and making the artifacts without any damage to the porcelain.
Another high-fidelity acquisition imaging technology independently researched and developed by Chinese scientists will also provide support for the non-destructive identification of ancient ceramics. Lu Dongming, a professor at the School of Computer Science and Technology at Zhejiang University, said that the photographs taken with this technique are much higher in resolution and pixels than conventional photographs, and can accurately display extremely fine texture images of ancient ceramics. After acquiring these microscopic images, the researchers can compare them with the porcelain texture images of various generations and origins in the database to identify the “positive†of the porcelain being tested.
Establish a unified standard to eliminate "chaos"
Experts at the meeting believe that while developing non-destructive technology appraisal technologies, national standards for the appraisal of ancient ceramics should be established as soon as possible to eliminate all kinds of "chaos" in the collection and appraisal markets.
Chen Kelun, deputy director of the Shanghai Museum, said that at present, the ancient ceramic technology appraisal technologies developed by various research institutes in China lack unified standards. Different units have different test methods, and the identification results are expressed differently. This allows collectors to make multiple machine tests and issue a large number of certificates. On the other hand, due to the lack of data sharing, the reliability of the identification results will inevitably be discounted. Chen Kelun proposed that cultural relics and scientific and technological circles in China should actively carry out multi-disciplinary cooperation and use scientific and technological methods in combination with traditional ophthalmological appraisals to establish a set of national standards for the identification of ancient ceramics and ensure the authoritative scientific nature of cultural relics appraisal.