Connecting Inside and Outside Through 360° Imagery for Close-Range Photogrammetry

Barazzetti, Luigi; Previtali, Mattia; Roncoroni, Fabio; Valente, Riccardo

doi:10.5194/isprs-archives-xlii-2-w9-87-2019

Cited by 11 publications

(12 citation statements)

References 8 publications

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“…Some elements of the complex were captured with a higher level of detail using an image-based method based on fisheye photogrammetry [38,39]. Fisheye lenses offer wider fields of view than frame lenses, and they can be mounted on camera bodies featuring high geometric and radiometric resolution.…”

Section: Photogrammetry With Fisheye Imagesmentioning

confidence: 99%

Generation of a Multi-Scale Historic BIM-GIS with Digital Recording Tools and Geospatial Information

Barazzetti

Roncoroni

2021

Heritage

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This paper discusses the creation of an integrated historic BIM-GIS for the complex of San Pietro al Monte, an important Romanesque monument in Civate (Italy) inscribed in the UNESCO tentative list with other seven medieval Benedictine settlements. The reason behind the choice of an integrated H-BIM-GIS solution is motivated by the large extension of the considered area (about 30 km2) and the need for multi-scale digital information integrated into a 3D parametric environment. The model includes geospatial information at a territorial scale and in situ digital data capturing the complex at a higher level of detail. The work aims at exploring the pros and cons of a novel parametric 3D environment able to integrate both BIM and GIS data, methods, and processing tools in the case of historic buildings and sites.

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Section: Photogrammetry With Fisheye Imagesmentioning

confidence: 99%

Generation of a Multi-Scale Historic BIM-GIS with Digital Recording Tools and Geospatial Information

Barazzetti

Roncoroni

2021

Heritage

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“…The advantages of using spherical imagery, such as low cost, fast data collection and guaranteed overlap, provide an interesting alternative for mobile mapping. [3], [8], [9], [10].…”

Section: Introductionmentioning

confidence: 99%

Possible approaches for processing of spherical images using SfM

Zahradník,

Vynikal

2023

CEJ

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Spherical cameras are being used more frequently in surveying because of their low cost and possibility to process spherical images with conventional SfM methods. Fish-eye lenses are now frequently found on modern 360° cameras, allowing for the capture of the entire scene and subsequent model reconstitution by a non-photogrammetrist specialist. Gyrospherics are a feature of cameras that ensure image stabilization to reduce blur when the camera is moving. This feature allows it to capture moving scenes in time-lapse mode. However, two main factors - hardware parameters and software algorithms - affect the quality of the images that are captured. The 360° camera design allows for a variety of data processing methods by SfM. These images were created using multiple image sensors and lenses from each 360° camera. These images can be processed individually or by applying rules to define relationships between images. Also, images from cameras can be stitched and processed with a spherical camera model. In this paper is proposed processing methods of data from 360° cameras and estimated accuracy of each method.

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“…Accuracy evaluation are reported in [21][22][23][24][25][26]. In [27], a set of spherical images is used to merge photogrammetric projects carried out with other camera models.…”

Section: Introductionmentioning

confidence: 99%

Metric Rectification of Spherical Images

Barazzetti

2022

IJGI

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This paper describes a method for metric recording based on spherical images, which are rectified to document planar surfaces. The proposed method is a multistep workflow in which multiple rectilinear images are (i) extracted from a single spherical projection and (ii) used to recover metric properties. The workflow is suitable for documenting buildings with small and narrow rooms, i.e., documentation projects where the acquisition of 360 images is faster than the traditional acquisition of several photographs. Two different rectification procedures were integrated into the current implementation: (i) an analytical method based on control points and (ii) a geometric procedure based on two sets of parallel lines. Constraints based on line parallelism can be coupled with the focal length of the rectified image to estimate the rectifying transformation. The calculation of the focal length does not require specific calibrations projects. It can be derived from the spherical image used during the documentation project, obtaining a rectified image with just an overall scale ambiguity. Examples and accuracy evaluation are illustrated and discussed to show the pros and cons of the proposed method.

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Connecting Inside and Outside Through 360° Imagery for Close-Range Photogrammetry

Cited by 11 publications

References 8 publications

Generation of a Multi-Scale Historic BIM-GIS with Digital Recording Tools and Geospatial Information

Generation of a Multi-Scale Historic BIM-GIS with Digital Recording Tools and Geospatial Information

Possible approaches for processing of spherical images using SfM

Metric Rectification of Spherical Images

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