Core Viewpoint - The "Tanyuan Plan 2024" focuses on the digital preservation of the Longmen Grottoes, emphasizing technological innovation, cultural revitalization, and sustainable operation to enhance the digital protection of cultural heritage [1][10][26] Group 1: Project Overview - The Longmen Grottoes contain 2,345 caves and nearly 110,000 statues, recognized as the pinnacle of Chinese stone carving art by UNESCO [3] - The project addresses the technical challenges of digitizing shallow relief sculptures, which have surface engravings less than 0.1mm deep, requiring high precision and efficiency [3][4] - The "Tanyuan Plan 2024" collaborates with the Longmen Grottoes Research Institute and Wuhan University to develop high-precision digital collection methods for key caves [3][4] Group 2: Technological Innovations - The project introduces a "high-precision 3D reconstruction method based on photometric stereo" and a "topology-aware local-global fusion modeling strategy" to overcome non-contact modeling challenges [4] - The use of Tencent's mixed model for automatic information aggregation and intelligent understanding of the relief pattern database supports the creation and dissemination of cultural heritage [4][19] - The cost of high-precision equipment has significantly decreased, with photometric stereo modeling devices costing only a fraction of traditional laser scanning equipment [20] Group 3: Expert Contributions and Findings - Experts conducted field research on the preservation status and digitalization of shallow reliefs, focusing on the technical challenges of modeling and pattern extraction [6][7] - The research provided essential insights for selecting technologies and strategies for data collection and future collaborative practices [7][26] - The project showcased its digitalization achievements, including a high-precision 3D dataset and a decorative pattern database, which serve as innovative solutions for the protection of grotto heritage [18][25] Group 4: Future Directions - The "Tanyuan Plan 2024" aims to create a complete loop of "technology validation, content reconstruction, and collaborative dissemination" to enhance the digital protection capabilities of the Longmen Grottoes [26] - The success of this project lays a solid foundation for "Tanyuan Plan 2025," which will continue to expand the platform-driven approach to cultural heritage preservation [26]