Reverse engineering and the creation of digital twins are advantageous for documenting, cataloging, and maintenance control tracking in the cultural heritage field. Digital copies of the objects into Building Information Models (BIM) add cultural interest to every artistic work. Low-cost 3D sensors, particularly structured-light scanners, have evolved towards multiple uses in the entertainment market but also as data acquisition and processing techniques for research purposes. Nowadays, with the development of structured-light data capture technologies, the geometry of objects can be recorded in high-resolution 3D datasets at a very low cost. On this basis, this research addresses a small artifact with geometric singularities that is representative of small museum objects. For this, the precision of two structured-light scanners is compared with that of the photogrammetric technique based on short-range image capture: a high-cost Artec Spider 3D scanner, and the low-cost Revopoint POP 3D scanner. Data capture accuracy is evaluated through a mathematical algorithm and point set segmentation to verify the spatial resolution. In addition, the precision of the 3D model is studied through a vector analysis in a BIM environment, an unprecedented analysis until now. The work evaluates the accuracy of the devices through algorithms and the study of point density at the submillimeter scale. Although the results of the 3D geometry may vary in a morphometric analysis depending on the device records, the results demonstrate similar accuracies in that submillimeter range. Photogrammetry achieved an accuracy of 0.70 mm versus the Artec Spider and 0.57 mm against the Revopoint POP 3D scanner.

The digitisation of architectural heritage has experienced a great development of low-cost and high-definition data capture technologies, thus enabling the accurate and effective modelling of complex heritage assets. Accordingly, research has identified the best methods to survey historic buildings, but the suitability of Structure-from-Motion/Multi-view-Stereo (SfM/MVS) for interior square symmetrical architectural spaces is unexplored. In contrast to the traditional SfM surveying for which the camera surrounds the object, the photograph collection approach is divergent in courtyards. This paper evaluates the accuracy of SfM point clouds against Terrestrial Laser Scanning (TLS) for these large architectural spaces with a symmetrical configuration, with the main courtyard of Casa de Pilatos in Seville, Spain, as a case study. Two different SfM surveys were conducted: (1) Without control points, and (2) referenced using a total station. The first survey yielded unacceptable results: A standard deviation of 0.0576 m was achieved in the northwest sector of the case study, mainly because of the difficulty of aligning the SfM and TLS data due to the way they are produced. This value could be admissible depending on the purpose of the photogrammetric model.

Highlights: The photogrammetric survey demonstrates to be a potential tool in the preventive conservation of ancient plasterworks. The high-precision 3D model allows the study and quantification of alterations (e.g. fissures, deformations, and loss of mass or polychromies). The virtual model and the analysis performed with CloudCompare software provide fast, accurate and accessible results to experts in the field. Previous studies and documentation about the state of conservation of architectural or decorative elements are crucial for heritage managers, technicians and researchers to succeed in the maintenance and preservation of the heritage. In this sense, hand tracings, digital drawings, or photographs have traditionally been the methods for alteration and sample mapping. In spite of their effectiveness, these methods have some disadvantages, such as the need for more precision in terms of location, dimensions, quantification and types of alterations. By contrast, high-resolution three-dimensional (3D) models allow us to analyse decorative ancient plasterworks with great precision, offering considerable advantages over traditional tools for heritage documentation. To facilitate stakeholders’ work and enhance the quality of data collected, this work proposes the use of photogrammetry as a tool for the documentation of polychromed ancient plasterworks, taking the upper frieze of the access door to the Charles V ceiling room in the Royal Alcazar of Seville as a case of study. Thus, the work methodology applied has shown several advantages over previous methods. On the one hand, it was possible to obtain a 2D planimetry from the 3D model; this is an essential step for those responsible for heritage, especially in reports prior to restoration interventions. On the other hand, the 3D model created enables present alterations identification, the location of fissures and cracks in their three dimensions (opening, length and depth), deformations measurement and control, the quantification of mass or polychrome loss, and the detached elements digital reconstruction. In this way, highprecision digital results are quickly obtained and accessible to all the experts involved in the heritage conservation and maintenance plan.

The Spanish Civil War is a chapter of a historical memory that has been avoided for years, rejecting any lived event. In recent years, this trend is changing, and public administrations are beginning to promote its recovery, starting by declaring this heritage as an Asset of Local Relevance. The aim of the current research is to study, analyze, and document the military constructions erected by the Government of the Republic during 1936–1939, at the Cullera’s Cape (Valencia). The research begins with the historical context definition, to subsequently approach the study of the material remains, analyzed after an exhaustive and rigorous graphic documentation work. The methodology followed had to be adapted to the needs of the constructions and their surroundings, which led to the use of a combination of 3D survey techniques based on terrestrial laser scanning and digital photogrammetry methods. Accordingly, we were able to digitize, geometrize, and document both the buried and the exposed construction remains, in a correct and precise manner. This is a unique and unprecedented investigation despite its significance and historical relevance. The present work can serve as a basis for the musealization of the site, contributing to its recovery and enhancement.

The market is experiencing an expanding range of products, prompting manufacturing companies to differentiate themselves from competitors by moving away from conventional concepts. However, these innovations often fail to meet consumer expectations, leading to product failure, and consequently, an unsustainable evolution of the market and the business. This unsustainability requires designers to adapt innovations to align with consumer needs and desires. Understanding and validating these adaptations can be achieved by examining users’ emotional responses to innovative products. The objective of this study is to assess the influence of innovation in the development of new successful products, sales performance, and, therefore, business sustainability. This evaluation is based on the perceptions of potential consumers through the analysis of users’ emotional responses to various new product concepts at different design stages. A case study presents the evaluation of 48 new interactive lamp concepts categorized into relaxation, study, and leisure topics. The target audience for these concepts is consumers aged 18 to 24. The designs were developed by 12 teams of final-year industrial design students using insights from a prior psychographic study involving over 800 potential consumers. The findings highlight differences in users’ perceptions of innovative and traditional products across topics. These differences relate to users’ interest, intuitiveness, and desirability toward a product. Generally, traditional product concepts are perceived as more intuitive, but users show greater interest and desire for innovative concepts, with some variations among the analyzed topics. The business environment is encouraged to share these data with new product-development teams to achieve sustainable market and business growth.