What can you do with 3D scanning of cultural heritage tombs? Explaining 7 use cases

Table of Contents

• Background to the growing attention on 3D scanning of cultural heritage tombs

• Use Case 1: Record and store current conditions with high precision

• Use case 2 Compare and verify the progression of weathering and damage

• Use case 3: Helps improve the legibility of sculptures and engravings

• Use Case 4: Use as reference material for repair, restoration, and preservation maintenance

• Use Case 5: Use as recovery documentation following disasters or accidents

• Use case 6: Utilize as materials for exhibitions, public displays, education, and outreach

• Use Case 7: Used for managing the entire cemetery area and understanding the surrounding environment

• Approach to Successfully 3D Scan Graves That Are Cultural Properties

• Summary

Background Behind the Rising Attention to 3D Scanning of Cultural Heritage Graves

As we preserve graves that are cultural properties and pass them on to future generations, the importance of accurately recording their current condition has been growing year by year. Gravestones, stone chambers, memorial towers, groups of stone monuments, and the surrounding developed terrain gradually weather and sustain damage over long periods and are also affected by changes in their surrounding environment. Even when there appears to be little change to the naked eye, it is not uncommon that, over the course of several years, surface wear, tilting, subsidence, and the loss of fine details progress.

Traditional recording methods focused on photography, manual measurements, the creation of plan and elevation drawings, and basic dimensional checks. These remain important, but when the subject has a complex shape, fine decorations or inscriptions, or when one wishes to preserve its relationship to the surrounding terrain, there are limits to the amount of information they can capture. Graves as cultural properties are often insufficient to be viewed merely as individual stones, because they frequently derive value from their placement, orientation, tilt, relationship to the ground, and positional relationships with surrounding structures.

3D scanning is attracting attention. It is a method of recording the shapes of tombs designated as cultural properties as three-dimensional data, and it lends itself to a wide range of uses—capturing surface geometry, reconfirming dimensions, extracting cross-sections, comparative verification, visualization, and more. Its major appeal is that it goes beyond merely producing a 3D model: it can be used across conservation, research, restoration, public exhibition, education, and disaster response.

Also, what is important for practitioners is that 3D scanning is not only for specialized research use but can be used as operational data to support real on-site decision-making. Keeping records of the current condition makes it easier to compare during future repairs and to share the condition of the object among stakeholders. Furthermore, because graves of cultural properties often have restrictions on entry and contact, the ability to capture shape data without physical contact itself makes it a method well suited to fieldwork.

Many professionals who search for "cultural property tomb 3D scan" are likely not only looking to know what can be done, but also want to confirm in which work situations it is meaningful, where the value of adopting it lies, and to what extent it can assist with preservation and utilization. Therefore, this article concretely explains what can actually be done with 3D scanning of cultural property graves, focusing on practical use cases.

Use Case 1: Record and Save the Current State with High Precision

The most fundamental and important use of 3D scanning of cultural heritage graves is the highly accurate documentation of their current condition. In the field of cultural property conservation, preserving the present state as precisely as possible provides the foundation for all subsequent decisions. If the tombstone’s dimensions, surface irregularities, locations of cracks, shapes of missing parts, the condition of stone joints, tilt, and positional relationships with the surroundings are recorded in three dimensions, they become baseline reference materials for future comparison and verification.

The important point here is that it preserves information that is difficult to capture with photos alone. Photos are effective for recording appearance, but impressions change depending on shooting angle and lighting, and there are limits to accurately determining dimensions and depth. In contrast, 3D scanning captures the shape itself as coordinate data, making it easier to check lengths, heights, and the condition of surfaces at any chosen position afterward.

Cultural heritage graves may have value not only as individual gravestones but as an integrated ensemble with their pedestals, surrounding fences, steps, approach paths, stonework, slopes, and so on. For that reason, recording only the individual element may be insufficient for preservation management. If a 3D scan captures the surrounding area as well, the relationship between the grave itself and its surrounding environment can be preserved as a single dataset. This is extremely useful when considering future maintenance and environmental changes.

Furthermore, keeping 3D data as a record of the current condition makes it easier to reduce differences in understanding among stakeholders. In practice, multiple parties in different roles — managers, researchers, construction personnel, preservation staff, local governments, and residents — may be involved. In such cases, if you rely only on impressions from visiting the site, differences in understanding of the condition of the object are likely to arise. With 3D data, people who cannot visit the site can check the same shape information, making it easier to share a common basis for discussion.

Graves that are cultural properties should be managed on the assumption that they will change over time. Even if they appear stable now, their condition may change in the future due to ground movement, rainfall, freeze-thaw cycles, vegetation encroachment, human contact, and other factors. To track such changes, an initial baseline dataset is necessary. 3D scanning is very well suited as a method for creating that baseline data.

Use Case 2: Comparing and Verifying the Progression of Weathering and Damage

In the preservation of cultural heritage graves, detecting changes is important. The problem is that changes do not always occur abruptly; rather, they often progress very slowly. Surface wear, the shallowing of inscriptions, chipping of corners, bulging of stone, widening gaps at joints, and slight tilting can be difficult to assess from a single inspection. Comparing 3D data acquired at different times is useful for this purpose.

If you regularly 3D-scan the same object, it becomes easier to compare which parts have changed and by how much. This is highly meaningful when determining priorities for preservation management. For example, even if there is no obvious visual difference, discovering that wear has progressed locally in a specific area allows you to consider targeted measures. Conversely, if there is no significant change in an area of concern, that information can be used to justify avoiding excessive intervention.

Graves that are designated as cultural properties can exhibit uneven patterns of deterioration due to factors such as rainwater runoff, sunlight exposure, wind direction, and vegetation. This is because conditions differ by location — not only on the front but also on the sides and back, at contact points with the foundation, in shaded areas, and so on. If the entire monument is recorded with a 3D scan, it becomes easier to identify which surfaces are more prone to change, and this can also help inform reviews of the preservation environment.

Another advantage of comparative verification is that records are easily carried over even if the person in charge changes. Management of cultural properties is long-term, so the person responsible or the contractor may change over the course of several years. Even when photos and notes alone make comparison with previous records difficult, if three-dimensional data are organized, it becomes easier to track the same object using the same criteria. This is important for stabilizing the quality of ongoing preservation management.

Furthermore, comparison results are also useful for external communications. Conservation measures for cultural heritage often involve budgets and consensus-building, and there are occasions when it is necessary to explain why measures are needed now. In such cases, visually showing the differences between past and present conditions makes it easier to convey the current situation to stakeholders. Being able to present changes as records rather than as impressions is a major practical advantage.

Use Case 3: Helping to Improve the Legibility of Sculptures and Engravings

Graves that are cultural properties may have inscriptions, posthumous Buddhist names, the year of erection, memorial texts, family names, decorative carvings, and so on engraved on them. However, there are many cases where characters and patterns have become difficult to read due to long-term weathering, dirt, and surface abrasion. They can be hard to decipher even when visually inspected on site, and photographs may show almost nothing depending on lighting conditions. Even in such situations, 3D scanning is effective.

By capturing the fine surface irregularities with a 3D scan, you can detect engravings as differences in shape rather than just by color or tone. Even if the characters have become shallow, if they can be captured as surface undulations they can aid in decipherment. In particular, visualizations that simulate changes in light direction or emphasize shadows can make inscriptions that were difficult to see with the naked eye or in ordinary photographs much easier to read.

This is useful not only for academic research but also for practical fieldwork. For example, it allows you to organize which areas still retain inscriptions, to use that information when creating illustrations for survey reports, and to share the condition of engravings with stakeholders who cannot visit the site. It is also a major advantage that shape information can be obtained non-contact for subjects that are difficult to examine by rubbing or by direct contact.

In the case of cultural-heritage graves, the sculpture and inscriptions themselves are sometimes the central elements of value. This is because they provide clues for interpreting the background of their erection, local history, funerary culture, stonemasonry techniques, and forms of belief. If one gives up on recording them simply because legibility has deteriorated, it will hinder future research and cataloging. If the current condition is carefully recorded using 3D scanning, there is a greater chance that the present information can be referred to even if further weathering occurs.

3D data is also useful when multiple people are carrying out interpretation work. Short on-site checks alone can lead to divided opinions, but if you examine the form in the data while discussing it, you can proceed with the reading more calmly. Of course, a 3D scan alone won't let you read everything, but it is highly valuable as supplementary material for improving readability.

Use Case 4: Use as reference material when considering repairs, restoration, and preservation maintenance

When considering repairs, restoration, disassembly-and-repair, relocation, foundation reinforcement, or surrounding-site work for graves that are cultural properties, it is essential to accurately understand the current condition. To assess where damage has occurred, how each component is in contact with others, the degree of tilt or settlement, and what effects would arise from intervention, shape information is necessary. 3D scanning is useful as material for that assessment.

For example, if the base of a gravestone is slightly tilted, it can be difficult to determine the priority of response based only on a subjective on-site assessment. However, if you can confirm relative heights and the inclination of surfaces from three-dimensional data, it becomes easier to assess how much deviation there is. It can be used both as a basis for judging whether repairs are necessary and as material for narrowing the scope of work.

Also, graves designated as cultural properties often have irregular shapes and tend to require considerable time for pre-construction preparations. Because they have three-dimensional features that cannot be understood from plan drawings alone, it may be necessary to visit the site multiple times. If the grave’s three-dimensional information is recorded with a 3D scan, the accuracy of pre-planning is improved and the burden of on-site verification can be reduced.

In planning preservation and maintenance, not only the object itself but also the surrounding drainage, access routes, vegetation, slopes, and stonework are important. Even if a grave is sound, poor drainage around it can accelerate deterioration, and the arrangement of worshipper and visitor routes can affect preservation. By conducting a 3D scan that includes the surrounding area, it becomes easier to develop a maintenance plan that considers the whole environment rather than just making isolated repairs.

Furthermore, comparing data before and after repairs also enables verification of the intervention’s effectiveness. It can be used as documentation to confirm where and how repairs were carried out, whether deformations have improved, and whether any unintended alterations have occurred. In the conservation of cultural heritage, it is more important to take the minimum necessary measures without diminishing the object’s value than merely restoring it to look clean. For that reason, objective assessment using 3D data is highly meaningful.

Use Case 5: Use as recovery documentation after disasters or accidents

Graves designated as cultural properties may be affected by natural disasters or accidents. There are numerous risks to consider, such as toppling or displacement due to earthquakes, slope collapse caused by heavy rain, damage from fallen trees, inflow of sediment, and damage from human contact. When such incidents occur, whether pre-existing 3D data exists can greatly change how easily restoration planning can proceed.

At a disaster site, ensuring safety is the top priority. After that, it is necessary to determine what was damaged and what the original condition was. However, looking only at the post-disaster state can leave the original shapes and positional relationships unclear. In particular, when components have become detached or multiple stone blocks have shifted, estimating the original configuration is not easy. If a 3D scan has been taken beforehand, it can be extremely useful as baseline data for recovery decision-making.

Also, disaster response can be a race against time. You must make decisions with limited information about whether to prioritize on-site preservation, temporarily relocate items, how to set access restrictions, and to what extent to carry out emergency measures. In such cases, if pre-disaster data are available, it becomes easier for stakeholders to share the original shape and arrangement and to make rapid decisions.

3D data is important as a record of accidents and disasters. By objectively preserving the extent of damage, it aids subsequent analysis, reporting, and the organization of measures to prevent recurrence. Furthermore, pre-event data is useful for confirming how closely restoration has returned something to its original state. For irreplaceable subjects, such as cultural heritage tombs, the mere existence of information about the original condition is itself an extremely valuable asset.

You may not feel the need for it during normal times, but when disasters or accidents occur it may already be too late. One of the purposes of introducing 3D scanning to the graves of cultural heritage is to establish a foundation of records to prepare for such contingencies. This is an important perspective that should be considered as part of conservation work.

Use Case 6: Leveraging as materials for exhibitions, public displays, education, and outreach

3D scanning of cultural heritage graves can be used not only for preservation and repair but also for exhibition and educational outreach. Cultural heritage graves may have restrictions on on-site viewing. This is because they may be inaccessible for conservation reasons, the ground may be hazardous, permanent public display may be difficult due to outdoor conditions, or they may be in remote locations that make it hard for many people to visit. In such cases, having 3D data makes it easier to share information without relying on the site.

For example, by creating visual materials based on three-dimensional shapes, you can clearly convey the structure and details of a grave. Depth, the spatial relationships of carvings, and the overlapping of components—which are hard to convey in flat photographs—can also be shown more easily. This is effective not only for explanatory materials for general visitors but also for school education, community learning, and museum outreach activities.

Another advantage of 3D data is that it can magnify parts that are hard to see on site and clearly present top and rear views that are difficult to check from normal viewpoints. Tombs that are cultural properties can be hard to understand by simply looking at their exterior. To convey why they have that shape, which parts have meaning, and what techniques were used, visualization that includes three-dimensional information is effective.

In educational settings, it can also be used as teaching material for studying objects that cannot be touched directly. When learning regional history, the history of religious beliefs, stone cultural heritage, funerary culture, and conservation techniques, having three-dimensional materials helps deepen understanding. The value of cultural heritage lies not only in preserving it but also in conveying it to society so it can be more widely shared. As a bridge for that transmission, the role of 3D scanning is significant.

Furthermore, even when used for public purposes, if the original data are precise, it becomes easier to adjust how they are presented as needed. The exactness required for archival records and the clarity required for public outreach serve different purposes, but if the underlying three-dimensional data are in order, it is easier to adapt them to the intended purpose. This is a major strength in preserving cultural heritage graves while making them socially useful.

Use Case 7: Managing the Entire Cemetery Area and Understanding the Surrounding Environment

When people think of 3D scanning of cultural heritage graves, they tend to imagine a three-dimensional record of the tombstone itself, but in practice there is great value in capturing the entire burial area and its surrounding environment. A grave does not exist as a mere point but within a defined space. Many elements affect preservation conditions: approach paths, stone steps, retaining walls, stone walls, trees, drainage routes, slopes, boundaries, and nearby structures.

For example, where rainwater flows in from and where it tends to accumulate are closely related to the deterioration of graves. If the surrounding topography can be understood in three dimensions, it becomes easier to examine water flow, low areas prone to pooling, and unstable sections of slopes. Even if a grave itself appears to be damaged, it is not uncommon for the cause to lie in the surrounding environment. In such cases, repairing only the individual grave does not address the root cause.

Also, at sites where multiple graves or stone monuments are clustered, understanding the overall arrangement is important. Grasping which grave faces which direction, how each structure relates to the others, and the layout of visitor and maintenance circulation improves the accuracy of conservation and public-access planning. This is important not only for any single monument but also when considering the historical value of the burial area as a whole.

From the perspective of site management, it is also useful for fixed-point recording.

If the entire burial area is preserved in 3D at a given point in time, it becomes easier to compare future vegetation overgrowth, topographic changes, and the impacts of surrounding facilities. In particular, graves that are cultural properties located outdoors continue to be affected by the natural environment, so wide-area records are effective for long-term management.

Furthermore, it can be used as baseline material for construction and maintenance planning. When considering temporary facility planning, delivery routes, safety measures, and the delineation of access areas, having a grasp of the overall shape of the burial area makes it easier to make decisions suited to local conditions. Preservation of cultural-property graves requires balancing delicate handling of the objects with the practical realities of on-site operations. As a foundation that supports both, 3D scanning is effective.

Considerations for Successfully 3D Scanning Cultural Heritage Graves

3D scanning of cultural heritage tombs is a useful technology, but carrying it out does not automatically produce results. What is important is to clarify at the outset why you are recording. Whether the purpose is documenting the current condition for preservation, considering repairs, conducting comparative monitoring, or preparing for exhibition and public display will change the necessary scope, accuracy, and approach to data organization. If you proceed with an unclear purpose, you tend to end up with data that exist but are difficult to use in practice.

Defining the scope of the subject is also important. You need to decide in advance whether to record only the tombstone, or to include the base and surrounding terrain, or to also cover nearby groups of stone monuments. For graves that are cultural properties, single-object documentation is often insufficient, so it is important to carefully consider how extensively they should be documented for conservation.

On-site, attention must also be paid to restrictions on contact, entry conditions, the lighting environment, vegetation, surrounding safety, and work flow. While prioritizing the protection of cultural properties, measures are required to reduce gaps in documentation. This is especially true outdoors, where visibility and workability can change significantly depending on the weather and time of day, so planning that takes local conditions into account is essential.

Moreover, it is important to consider how the data will be used after acquisition. A 3D scan is not complete once captured; it only has value when it is stored as a record and organized so it can be reviewed when needed and easily compared and shared. You should manage it with the awareness of including the object name, acquisition date, scope, reference information, update history, and other relevant details so that anyone can understand its purpose.

And what is often overlooked is the relationship between three-dimensional shape and location information. In the management of graves of cultural heritage, it is important not only to manage their shape but also to reliably manage where they are located. In situations such as re-surveys, fixed-point comparisons, surrounding maintenance, boundary confirmation, and simple on-site coordinate checks, continued management becomes difficult if the positional reference is ambiguous. To make the data handling of 3D scans more practical, it is effective to also consider on-site coordinate verification and the handling of reference points.

Summary

3D scanning of cultural heritage graves does more than produce mere three-dimensional models. It enables high-precision preservation of current conditions, comparative verification of weathering and damage, improved legibility of inscriptions and carvings, consideration of repair and restoration, documentation for post-disaster recovery, exhibition and educational outreach, and management of entire burial areas — a wide range of practical applications directly connected to professional work. Cultural heritage graves are outdoor historical materials that change over time, and once information is lost it cannot be restored. That is precisely why there is great value in recording their present condition in three dimensions and preserving it in a form that can be used for future conservation and utilization.

On the other hand, to make 3D scans truly usable in practical work, it is essential to anticipate and address goal setting, the scope of the subject, consideration of on-site conditions, data organization, and continuous comparative operations. Especially for targets where surrounding terrain and positional relationships are important, such as graves of cultural properties, how to handle positional information together with shape data will determine the subsequent management accuracy. In situations where you want to streamline same-point verification on revisit, verification of control point positions, simple surveying of the surroundings, and grasping on-site coordinates during preservation and maintenance, combining a mechanism like LRTK that supports centimeter-level (half-inch-level) positioning when mounted on an iPhone makes it easier to link the records obtained by 3D scanning to field operations. Rather than just recording cultural property graves and stopping there, the perspective of integrating 3D scanning and position management as a foundation for continuously protecting and utilizing them will become increasingly important.