The cause of the three-dimensional digitization of cultural relics
According to the "14th Five-Year Plan" Cultural Relics Protection and Scientific and Technological Innovation Planning Notice:
The system integrates the national database of immovable cultural relics resources, the state-owned movable cultural relics census database, the revolutionary cultural relics database, etc., and strengthens the application of big data of cultural relics resources. Incorporate the spatial information of cultural relics resources into the basic information platform of land space. Strengthen the digital protection of cultural relics, focusing on world cultural heritage, national key cultural relics protection units, and first-class cultural relics in the collection, and promote the collection and display of high-definition data on relevant cultural relics. Improve the national archaeological excavation information management system. Establish a system of standards and norms for the digitization of cultural relics, improve data management and open sharing mechanisms, and increase the protection of cultural relics data. Support the construction of information infrastructure for national and provincial cultural relics data centers and key cultural and museum units, and strengthen the construction of new infrastructure in the field of cultural relics.
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Yijiawei cultural relics digitization service
Yijiawei provides 3D digitization services for cultural relics, obtains 3D size information of cultural relics through 3D scanning technology, and establishes a true color model of cultural relics at equal scale, which can be used for digital management and display of cultural relics.
3D scanning technology is non-contact measurement, fast and accurate. The 3D scanner will not cause harm to the artifact itself. It is the preferred collection method for the digitization of cultural relics today.
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Yijia dimension undertakes the type of cultural relics
Cultural relics are simply categorized.
Stoneware, jade, bone ware (including bone ware, tooth ware), woodware, bamboo, bronzeware, ironware, gold, silverware, lead-zinc ware, porcelain, etc.
Yijiawei's main cultural relics are mainly artifacts and cultural relics. It is suitable for objects with stable appearance and color, and non-transparent materials.
Cultural relics such as glassware, enamelware, clothes, shoes and bags can be undertaken after careful communication;
When the diameter of the cultural relics is less than half of the diameter of the cultural relics, the data cannot be obtained on the inner wall;
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The process of digitizing cultural relics
Before the 3D digitization work is carried out, on-site survey, equipment preparation, and comprehensive assessment of environmental safety are carried out according to the list of known project cultural relics.
Preparation
Project requirements According to the list of cultural relics, project background, technical requirements, construction period requirements, etc., reasonable selection of instruments and equipment, arrangement of personnel;
Technical disclosure According to the project requirements, make project disclosure, technical process communication, responsibility division and schedule arrangement with the technical personnel of the project;
Safety training During the operation, to ensure the safety of personnel, equipment, utensils and the environment, technical personnel shall not touch cultural relics, and shall operate in strict accordance with the operation process;
Hardware devices
Equipment configuration of cultural relics digitization project: 3D scanner, camera, color swatch, fill light, etc.;
3D laser scanner
1:1 accurate collection of cultural relics appearance geometry, Yijia has a number of 3D scanner equipment can be used for the collection of cultural relics, according to customer needs for rational selection.
Camera Multiple cameras are available for taking photos.
swatches and other auxiliary equipment
3D scanning jobs
The scanning site is reasonably arranged according to the project requirements. Strictly follow the operation specifications for scanning and collection.
Check after scanning the job:
There is no stratification and misalignment of the check point cloud;
Noise is clearly distinguished from cultural relics data;
If there is any unqualified, it will be cleaned in time;
Cultural relics photographed and color collected
The color collection of cultural relics is also a very important step in the digitization of cultural relics, through the way of camera photography, the use of photogrammetry principle to obtain a color three-dimensional model of cultural relics. Taking pictures of cultural relics requires great experience in order to adjust the camera parameters to obtain a three-dimensional model that is closest to the color of the cultural relics themselves. Yijiawei has cooperated with many museums and handled the digitization of hundreds of cultural relics, so please contact us if you have any needs.
Cultural relics photo job requirements:
1.Place the cultural relics in the center of the turntable, fix the camera on the tripod, aim at the cultural relics, and arrange the background monotonously;
2.According to the characteristics of cultural relics, the light source is arranged, and the type, position, and angle of the light source are adjusted, so as to reduce the appearance of shadows, reflections, and halos;
3.The camera adjusts the corresponding parameters;
4.On-site color management according to color card and white balance card.
Model making
Combine 3D scan models with photogrammetry models.
Model production is generally divided into archive level and display level.
Archival Texture Modeling:
1.Stitching and integrating the reconstructed tile model into a complete texture model;
2.Eliminate seams, stretching, etc.;
3.Make the texture color uniform and uniform;
4.Optimize the texture in line with the technical indicators of the achievement to minimize the amount of texture data;
5.Redistribute model UVs to eliminate fragmented UVs;
6.The texture map of the photogrammetry texture model is completely and accurately baked onto the 3D scanning mesh model, and the baking result is output.
7.Texture mapping checks are performed after baking;
Presentation-level model making:
The model is mainly made of archive-level model thinning, simplification or topology.
Reduce the number of triangular patches according to specific requirements;
The cultural relics model needs to be kept confidential, and the model is only for example, if you have any needs, please contact us