A Self-Assembly Portable Mobile Mapping System for Archeological Reconstruction Based on VSLAM-Photogrammetric Algorithm

Ortiz-Coder, Pedro; Sánchez-Ríos, Alonso

doi:10.3390/s19183952

Cited by 10 publications

(8 citation statements)

References 57 publications

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“…The time used for data acquisition with the proposed prototype has fluctuated between 8 and 12 minutes, depending on the test area. The trajectory followed has tried to cover the whole scanning area, as well as to start and end in the same area, in order to minimise the error by applying the loop closure algorithm (Ortiz-Coder and Sánchez-Rios, 2019). The graph of the trajectories can be seen in figure 3.…”

Section: Methodsmentioning

confidence: 99%

“…The second line of research uses the video frames to make more robust bundle adjustments, using the maximum resolution of the images, with the purpose of achieving maximum precision, even if the processing time increases. In this line are 3D measurement systems in engineering, architecture or heritage, among others (Ortiz-Coder and Sánchez-Rios, 2019;Torresani et al, 2021). In this field it is important to have high accuracy, over and above the post-processing time.…”

Section: Previous Workmentioning

confidence: 99%

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Accurate 3d Reconstruction Using a Videogrammetric Device for Heritage Scenarios

Ortiz-Coder

Cabecera

2021

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

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Abstract. In recent years, handheld laser scanning systems have been developed for documenting architectural heritage, among other applications. In this article we present a new alternative for the 3D documentation of historical heritage based on videogrammetry. For this purpose, a prototype has been designed with two cameras, a high resolution camera and a VGA camera which, when connected to a tablet, allow the user to establish a guidance system to ensure that the trajectory is not lost and enables highly flexible and long-lasting movements over time. This paper unveils the operation of the filtering and image selection system to finally proceed to an evaluation of the prototype in three areas of an archaeological site, called “Casa del Mitreo” in the city of Mérida (Spain). The results are compared to the Faro Focus 3D X330 laser scanner, yielding very similar accuracies and a capture time about 17 times faster than the 3D laser scanner. The article therefore proposes a real alternative to 3D data acquisition systems in applications for the graphic documentation of architectural and archaeological heritage.

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Section: Methodsmentioning

confidence: 99%

Section: Previous Workmentioning

confidence: 99%

Accurate 3d Reconstruction Using a Videogrammetric Device for Heritage Scenarios

Ortiz-Coder

Cabecera

2021

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

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“…In this phase, we start from a set of images from cameras A and B with different characteristics (see Table 1). In order to ensure the consistency of the data that will be used in the photogrammetric process (camera images B), the following filters were designed [7]: (A) The AntiStop filter, with which it is possible to delete images where the user stopped at a specific point in the trajectory and the system continuously captured data, resulting in nearby positions. This filter is based on the calculation of distances between the camera centers of the keyframes, which are related to the shot times.…”

Section: Image Selection By Filtering Processmentioning

confidence: 99%

“…In parallel, multiple 3D data acquisition systems based on active or passive sensors have appeared in recent decades, obtaining 3D models either as point clouds or textured surfaces. These new systems have revolutionized the possibilities of users, obtaining results that assist in understanding digitized elements and facilitating studies that could hardly be carried out in any other way [7][8][9].…”

Section: Introductionmentioning

confidence: 99%

An Integrated Solution for 3D Heritage Modeling Based on Videogrammetry and V-SLAM Technology

Ortiz-Coder

Sánchez-Ríos

2020

Remote Sensing

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This paper presents an approach for 3D reconstruction of heritage scenes using a videogrammetric-based device. The system, based on two video cameras with different characteristics, uses a combination of visual simultaneous localization and mapping (SLAM) and photogrammetry technologies. VSLAM, together with a series of filtering algorithms, is used for the optimal selection of images and to guarantee that the user does not lose tracking during data acquisition in real time. The different photogrammetrically adapted tools in this device and for this type of handheld capture are explained. An evaluation of the device is carried out, including comparisons with the Faro Focus X 330 laser scanner, through three case studies in which multiple aspects are analyzed. We demonstrate that the proposed videogrammetric system is 17 times faster in capturing data than the laser scanner and that the post-processing of the system is fully automatic, but takes more time than the laser scanner in post-processing. It can also be seen that the accuracies of both systems and the generated textures are very similar. Our evaluation demonstrates the possibilities of considering the proposed system as a new professional-quality measurement instrument.

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“…Authors in [8] provided a recently available review of mobile mapping system (MMS) and surveying technologies. Some of the newly developed and presented systems are described in [9][10][11][12]. These systems produce large-scale 3D point clouds and very-high-precision geometric measurements.…”

Section: Introductionmentioning

confidence: 99%

High-Resolution Representation for Mobile Mapping Data in Curved Regular Grid Model

Miyazaki

Tamaki

et al. 2019

Sensors

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As mobile mapping systems become a mature technology, there are many applications for the process of the measured data. One interesting application is the use of driving simulators that can be used to analyze the data of tire vibration or vehicle simulations. In previous research, we presented our proposed method that can create a precise three-dimensional point cloud model of road surface regions and trajectory points. Our data sets were obtained by a vehicle-mounted mobile mapping system (MMS). The collected data were converted into point cloud data and color images. In this paper, we utilize the previous results as input data and present a solution that can generate an elevation grid for building an OpenCRG model. The OpenCRG project was originally developed to describe road surface elevation data, and also defined an open file format. As it can be difficult to generate a regular grid from point cloud directly, the road surface is first divided into straight lines, circular arcs, and and clothoids. Secondly, a non-regular grid which contains the elevation of road surface points is created for each road surface segment. Then, a regular grid is generated by accurately interpolating the elevation values from the non-regular grid. Finally, the curved regular grid (CRG) model files are created based on the above procedures, and can be visualized by OpenCRG tools. The experimental results on real-world data show that the proposed approach provided a very-high-resolution road surface elevation model.

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A Self-Assembly Portable Mobile Mapping System for Archeological Reconstruction Based on VSLAM-Photogrammetric Algorithm

Cited by 10 publications

References 57 publications

Accurate 3d Reconstruction Using a Videogrammetric Device for Heritage Scenarios

Accurate 3d Reconstruction Using a Videogrammetric Device for Heritage Scenarios

An Integrated Solution for 3D Heritage Modeling Based on Videogrammetry and V-SLAM Technology

High-Resolution Representation for Mobile Mapping Data in Curved Regular Grid Model

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