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Item type:Publication, Fotogrametría, modelamiento tridimensional y drones en arqueología. Primera parte. La ilustración arqueológica. De la representación artística al modelamiento tridimensional(Pontificia Universidad Católica del Perú, 2024-10-11)3D photogrammetric modeling has brought about a revolution in archaeological documentation and illustration: 3D models allow one to interact and work with images and hold a vast amount of information. In this article we explore the development, characteristics and advantages of the various methods of archaeological illustration: artistic illustrations, technical drawings, photographs, video and computer-generated images. We explore the possibilities opened up by photogrammetric models, as well as the characteristics and differences entailed by the modeling of artifacts, contexts, sites and regions. The second part of this article will explore the different methods and strategies used in 3D modeling of archaeological sites. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Fotogrametría, modelamiento tridimensional y drones en arqueología. Segunda parte. Documentación, registro y modelamiento fotogramétrico de sitios arqueológicos(Pontificia Universidad Católica del Perú, 2025-03-17)The second part of this paper focuses on the process of 3-D photogrammetric modelling applied to archaeological sites. A discussion of the three phases planning, recording and processing of drone and drone less photogrammetric documentation, is followed by a review of six site-recording strategies as determined by the capacities of the equipment used, the characteristics of the sites that are being modelled, and their geographical and topographic setting. These strategies are based on the documentation of over a thousand sites in all Peru, as well as on the various recording requirements in terms of the desired outputs. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Enhanced Underwater 3-D Reconstruction: Case Study at Los Organos Reef Using 3dFeatureUp and 3dVisualAppUp(Institute of Electrical and Electronics Engineers Inc., 2026)In recent years, photogrammetry for tridimensional (3-D) reconstruction of underwater environments has gained significant interest, offering a nonintrusive approach to study and monitor aquatic ecosystems. However, underwater photogrammetry requires specialized equipment capable of capturing high-resolution images with adequate and uniform lighting. This article introduces two innovative methodologies, 3-D reconstruction based on Feature Enhancement (3dFeatureUp) and 3-D reconstruction based on Visual Appearance Enhancement (3dVisualAppUp), which are designed to enhance the accuracy and visual quality of 3-D underwater models. These methodologies incorporate novel algorithms for water image enhancement (WaterImgEnh) and water image restoration (WaterImgRest), aiming to address the challenges posed by underwater image acquisition such as light attenuation, color distortion, and visibility reduction. This approach is validated through the 3-D reconstruction of Los Organos Reef, located in Piura, Peru, employing a combination of standard and specialized underwater cameras along with a customized lighting system. The results demonstrate significant improvements in both the structural characteristics and visual appearance of the 3-D models, as compared to those generated by traditional methods or using specialized underwater cameras alone. The 3dFeatureUp method significantly enhances the structural features of the model by merging images from multiple cameras, while the 3dVisualAppUp methodology improves the visual quality of the models by correcting color imbalances and removing water effects.