3-D object reconstruction from multiple-station panorama imagery

The paper discusses the potential of photogrammetric multi-station panorama processing for the 3D reconstruction and documentation of architectural objects. It is a summary of various paper by the author dealing with panorama imaging, mathematical models and photogrammetric processing.. Panorama images can be generated by any kind of digital cameras. If, as usual, cylindrical panoramic images are desired, they can be acquired if a suitable camera mount is used. In this case single image frames can easily be stitched together to a complete or partial panorama under consideration of the strict camera model (calibration parameters). Alternatively, a rotating linescanner camera can be used that may produce very high resolution images.

2004

The paper presents a historical review of panorama image techniques with special emphasis on photogrammetric applications. The first part of the paper deals with the anatomic and visual properties of human vision where the use of panoramic views is evident for monitoring the environment, recognition, avoidance of collision etc. Naturally, the use of photographic panoramic images became very popular already in the 19 century. The paper presents some interesting panorama image acquisition and viewing facilities of the beginning of panorama photography. Several photogrammetric applications are known in the field of close-range imaging and aerial imagery as well. They have always been used in very few and specific fields only. Analog panorama camera have been developed which have been used for photogrammetry and other professional applications. Different techniques are known for the acquisition of cylindrical and spherical images which are addressed by the report. Today’s increasing int...

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences

This research wants to show the possibility of quickly making high-quality photogrammetric models using 360-degree panoramic photographs, but made using low-cost, single-shot cameras. Currently there is a wide variety of single shot cameras, in which the shape of the camera can vary according to the number of lenses that it incorporates in the camera mount, but this will directly affect the quality of the photography. result and in the price of the team. The fundamental characteristic of single-shot cameras is that they are capable of capturing a 360-degree panoramic photo at the very moment of shooting, which allows to greatly reduce data collection times compared to the normal method of taking photos spherical. This occurs thanks to the fact that they have several lenses that allow them to capture everything that happens around them in a fraction of a second. In addition, the composition times of the final image are also reduced, since they incorporate a processor that allows them to stitch the panorama automatically. These features make data capture very fast, greatly reducing work times. To demonstrate the efficiency of this equipment, several tests have been carried out in different spaces, interior and exterior, of the Cathedral of Plasencia. For each data set, the object documentation was performed twice. The first time it was done with a Faro Focus 3D laser scanner to generate the highly metrically accurate control model. And the second time a Xiaomi Mi Sphere camera was used to generate the comparison model. The photogrammetric models were processed with the Agisoft Metashape software and the comparison of the models in the CloudCompare software. The results obtained in these comparisons have been very promising, showing the effectiveness of these cameras to quickly document heritage. All the data on working times, geometric precision of the models, metric deviations, etc. They are shown below in the document.

International Panorama Council Journal Vol. 4, 2020

The panorama has a two-century history in the world, but it is a newly developing and spreading concept in Turkey. The most venerable example in Turkey opened in Istanbul just a decade ago. This paper examines the Panorama 1326 Bursa, which opened in 2018, as an exemplar of the full-panorama or rotunda + dome technique. It reflects on the historiography of the image, the 3D object platform, and its impact for the community. The technical details are based on interviews conducted on August, 2020 with Haşim Vatandaş, the art director of the Panorama 1326, and the sculptor Atilla Tunca.

The research aims to optimize a workflow of architecture documentation: starting from panoramic photos, tackling available instruments and technologies to propose an integrated, quick and low-cost solution of Virtual Architecture. The broader research background shows how to use spherical panoramic images for the architectural metric survey. The input data (oriented panoramic photos), the level of reliability and Image-based Modeling methods constitute an integrated and flexible 3D reconstruction approach: from the professional survey of cultural heritage to its communication in virtual museum. The proposed work results from the integration and implementation of different techniques (Multi-Image Spherical Photogrammetry, Structure from Motion, Imagebased Modeling) with the aim to achieve high metric accuracy and photorealistic performance. Different documentation chances are possible within the proposed workflow: from the virtual navigation of spherical panoramas to complex solutions of simulation and virtual reconstruction. VR tools make for the integration of different technologies and the development of new solutions for virtual navigation. Image-based Modeling techniques allow 3D model reconstruction with photo realistic and high-resolution texture. High resolution of panoramic photo and algorithms of panorama orientation and photogrammetric restitution vouch high accuracy and high-resolution texture. Automated techniques and their following integration are subject of this research. Data, advisably processed and integrated, provide different levels of analysis and virtual reconstruction joining the photogrammetric accuracy to the photorealistic performance of the shaped surfaces. Lastly, a new solution of virtual navigation is tested. Inside the same environment, it proposes the chance to interact with high resolution oriented spherical panorama and 3D reconstructed model at once.

International Panorama Council Journal, 2019

In 2018, twenty-two (22) Russian museums created an association tasked to promote collaboration with the preservation and research of historic panoramas and dioramas in Russia. It is understood that the first step towards solving common problems should be writing a fundamental document that will outline a range of issues for further work.

Optics and Photonics News, 2001

Among the several information available on web the spherical panoramas by Google can be an important reference for the 3D models elaboration of urban contexts and historic buildings, difficult to access or even destroyed as a result of wars or natural disasters. Starting from the spherical photogrammetry, thoroughly tested and used by some scholars, the goal of this research was to verify the reliability in the use of spherical panoramas by Google in the architectural and urban survey, considered that in some cases such as in the recent earthquakethat hit central Italy, these images represent the only “visual” evidence ofsomething that no longer exists.

Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci., 2018

The work presented here focuses on the analysis of the potential of spherical images acquired with specific cameras for documentation and three-dimensional reconstruction of Cultural Heritage. Nowadays, thanks to the introduction of cameras able to generate panoramic images automatically, without the requirement of a stitching software to join together different photos, spherical images allow the documentation of spaces in an extremely fast and efficient way. In this particular case, the Nikon Key Mission 360 spherical camera was tested on the Tolentini’s cloister, which used to be part of the convent of the close church and now location of the Iuav University of Venice. The aim of the research is based on testing the acquisition of spherical images with the KM360 and comparing the obtained photogrammetric models with data acquired from a laser scanning survey in order to test the metric accuracy and the level of detail achievable with this particular camera. This work is part of a wider research project that the Photogrammetry Laboratory of the Iuav University of Venice has been dealing with in the last few months; the final aim of this research project will be not only the comparison between 3D models obtained from spherical images and laser scanning survey’s techniques, but also the examination of their reliability and accuracy with respect to the previous methods of generating spherical panoramas. At the end of the research work, we would like to obtain an operational procedure for spherical cameras applied to metric survey and documentation of Cultural Heritage.