Search Results (6)

The advancement of digital techniques and reduced costs have greatly facilitated their integration into cultural heritage preservation. These technologies are especially valuable in archaeology, where detailed documentation is crucial. However, minimal intervention in restorations often limits public understanding of archaeological spaces, making digital tools essential for enhancing engagement. An example is the study and the virtual hypothesis of the mural decorations in the Sala del Mosaico de los Amores, located in the Castulo Archaeological Site (Linares, Jaén, Spain), dated to the late first and early second centuries AD. The hall originally featured an elaborate wall decoration, now largely lost due to the collapse of its walls, leaving only a few fragments in situ. Using SfM photogrammetry, the hall and the original paintings and cornices—restored in a laboratory—were documented and virtually reassembled. This process employed precise color calibration and dimensional scaling to ensure the faithful recreation of the original appearance. In addition to the anastylosis of the surviving fragments, a virtual reconstruction hypothesis was developed, offering the public an immersive visualization of how the space would have looked in its original state. Full article

An increased interest in computer-aided heritage reconstruction has emerged in recent years due to the maturity of sophisticated computer vision techniques. Concretely, feature-based matching methods have been conducted to reassemble heritage assets, yielding plausible results for data that contains enough salient points for matching. However, they fail to register ancient artifacts that have been badly deteriorated over the years. In particular, for monochromatic incomplete data, such as 3D sunk relief eroded decorations, damaged drawings, and ancient inscriptions. The main issue lies in the lack of regions of interest and poor quality of the data, which prevent feature-based algorithms from estimating distinctive descriptors. This paper addresses the reassembly of damaged decorations by deploying a Generative Adversarial Network (GAN) to predict the continuing decoration traces of broken heritage fragments. By extending the texture information of broken counterpart fragments, it is demonstrated that registration methods are now able to find mutual characteristics that allow for accurate optimal rigid transformation estimation for fragments alignment. This work steps away from feature-based approaches, hence employing Mutual Information (MI) as a similarity metric to estimate an alignment transformation. Moreover, high-resolution geometry and imagery are combined to cope with the fragility and severe damage of heritage fragments. Therefore, the testing data is composed of a set of ancient Egyptian decorated broken fragments recorded through 3D remote sensing techniques. More specifically, structured light technology for mesh models creation, as well as orthophotos, upon which digital drawings are created. Even though this study is restricted to Egyptian artifacts, the workflow can be applied to reconstruct different types of decoration patterns in the cultural heritage domain. Full article

As one of China′s most precious cultural relics, the excavation and protection of the Terracotta Warriors pose significant challenges to archaeologists. A fairly common situation in the excavation is that the Terracotta Warriors are mostly found in the form of fragments, and manual reassembly among numerous fragments is laborious and time-consuming. This work presents a fracture-surface-based reassembling method, which is composed of SiamesePointNet, principal component analysis (PCA), and deep closest point (DCP), and is named SPPD. Firstly, SiamesePointNet is proposed to determine whether a pair of point clouds of 3D Terracotta Warrior fragments can be reassembled. Then, a coarse-to-fine registration method based on PCA and DCP is proposed to register the two fragments into a reassembled one. The above two steps iterate until the termination condition is met. A series of experiments on real-world examples are conducted, and the results demonstrate that the proposed method performs better than the conventional reassembling methods. We hope this work can provide a valuable tool for the virtual restoration of three-dimension cultural heritage artifacts. Full article

The reassembling of severely damaged tangible heritage is a primordial task for archaeologists who not only aim to further study the past but also to preserve ruined ancient monuments. As a consequence, various researchers have proposed methods to automatically solve this problem by computing and matching geometric properties of counterpart fragments. Although their results are quite promising, experts still carry out this task manually by finding relationships between distinctive matching cues, such as type of decoration, remaining traces, inscriptions’ content, etc. The topic itself poses challenges to both automatic and manual approaches due to the high level of damage ancient broken fragments have undergone over the centuries. Therefore, this paper proposes a Puzzling Engine that combines crucial elements of automatic and manual methodologies to empower experts with registration tools for reassembling fragmented heritage. Unlike similar hybrid human-computer puzzling engines, our approach is capable of automatically proposing matches and rough alignments solely based on the geometry of fractured surfaces. Based on these initial solutions and a set of registration tools, experts can accurately solve the puzzle. The virtual environment has been used and verified to find pairwise puzzle-pieces of actual antique wall decorated fragments, resulting in new discoveries that experts could not have come up with by utilizing classic techniques. Concretely, the contributions are twofold, (i) a feature-based registration pipeline that is able to suggest both matches and alignments to the user and (ii) a virtual interface that integrates automatic and user-assisted techniques to accurately puzzle fragmented surfaces. Full article

This article explores the changing values of heritage in an era saturated by an excess of media coverage in various settings and also threatened by either natural or manmade disasters that constantly take place around the world. In doing so, we focus on discussing one specific case: the debate surrounding the identification of Sungnyemun as the number one national treasure in South Korea. Sungnyemun, which was first constructed in 1396 as the south gate of the walled city Seoul, is the country’s most acknowledged cultural heritage that is supposed to represent the national identity in the most authentic way, but its value was suddenly questioned through a nationwide debate after an unexpected fire. While the debate has been silenced after its ostensibly successful restoration conducted by the Cultural Heritage Administration in 2013, this article argues that the incident is a prime example illustrating how the once venerated heritage is reassembled through an entanglement of various agents and their affective engagements. Methodologically speaking, this article aims to read Sungnyemun in reference to the growing scholarship of actor-network theory (ANT) and the studies of heritage in the post-disaster era through which to explore what heritage means to us at the present time. Our synchronic approach to Sungnyemun encourages us to investigate how the once-stable monument becomes a field where material interventions and affective engagements of various agents release its public meanings in new ways. Full article

This paper, on rural restructuring in China, focuses on the ability of agricultural heritage systems to adapt to modernizing conditions in the rural economy. Since 2002, when FAO initiated the protection of Globally Important Agricultural Heritage Systems (GIAHS), the value of agricultural heritage has been widely acknowledged, as has the importance and urgency to protect the systems in which they are embedded. However, such complex systems have not been fully assessed for their contribution to food security, ecosystem services and cultural preservation, as well as their ability to adapt to the demands of modernization. In fact, they have not been effectively evaluated as whole systems, largely because we have not yet devised satisfactory ways of studying complex systems, nor have we been able to assess them fully for their multi-faceted contributions to sustainability. This paper accepts the premise that such systems are sustainable in that they have survived as agro-ecosystems for many hundreds of years, having endured the predations of droughts, famines, plagues, floods and wars. This ability to sustain a rich diversity of biological and human systems is considered, in the theory of Complex Adaptive Systems (CAS), to be a form of resilience, meaning that these systems have either formed a new normal or returned to the old normal after a period of environmental or social stress. In effect, ancient agricultural heritage systems can be seen to represent what has been traditional and normal in China, but which today are faced with the overwhelming forces of modernization. Taking three examples from Qingtian County in Southern China, where physical and political conditions are consistent, the paper shows how similar rice-fish systems adapt differently and sustain themselves in the face of modernization, and particularly to the loss of youth and labor to urbanisation. One system self-adjusts by using remittances from abroad to sustain the system: an example of self-organization. In another township, the pursuit of tourism is the main form of adaptation to large losses of working population and marginal incomes. To maintain the landscape as a key attraction for tourists, this community has re-assembled abandoned rice terraces and is farming them as a collective enterprise under the auspices of a co-operative: an example of land and labor restructuring that has become common as the dominant form of agrarian change in China. In a third example, the local rice-fish system is being strengthened by modern farming technology and scientific techniques: an example of technological adaptation. The discussion explores the three responses as evidence of sustainable practice involving local restructuring, continued ingenuity, and the creative support of local governments in the face of the homogenizing demands of modernization. Full article