In recent years, the application of real scene 3D technology has become widespread in urban planning and cultural heritage protection. However, there has been relatively little attention paid to the construction of real scene 3D models for special natural landscapes such as caves.
From a paper by C. Zhang, et al.
Given the global distribution of karst topography and the large number of naturally developed caves with diverse types, unique landscape styles, and significant scientific value, this paper enriches the research in this field. By combining ground-based and aerial remote sensing techniques, and based on 3D laser scanning and photogrammetry, we have successfully constructed a real scene 3D model of the internal structure of a karst cave with a precision better than 4 cm.
Utilizing Unmanned Aerial Vehicle (UAV) oblique photography, we established a real scene 3D model of the external karst landform with a precision better than 2 cm. We also integrated the internal and external 3D models of the cave, developing a new, complete, and high-precision method for constructing real scene 3D models of karst cave landscapes. Furthermore, we proposed a method for texture reproduction in the dark environment inside the caves, enhancing the reproduction and visual appeal of the real interior.
The establishment of high-precision real scene 3D models can not only serve as an effective tool for scientific research on caves but also, as replicas of the real world, play a crucial role in public dissemination and education, thereby enhancing public understanding of cave geological landscapes.
In recent years, there have been rapid developments in real scene 3D technology, making it a hot topic in current research. Real scene 3D modeling involves transforming real-world objects or scenes into 3D models using digital technology. It integrates techniques and methods from multiple disciplines, including computer vision, graphics, metrology, and geographic information systems, enabling the simultaneous recording and display of textures and geometric shapes1.
Summarizing previous research, the focus has primarily been on two types of targets: modern buildings in urban settings2,3,4, and sculptures and ancient buildings in cultural heritage conservation scenarios5,6. Previous studies have also conducted similar research on 3D modeling of karst cave landscapes7,8. This paper aims to emphasize the integration of different technical methods to achieve better model integrity and the reproduction of color and texture of the karst cave landscapes.
For the complete paper CLICK HERE.
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