scholarly journals IMPLEMENTATION OF A LOW COST STRUCTURED LIGHT SCANNER

2013 ◽  
Vol XL-5/W2 ◽  
pp. 477-482 ◽  
Author(s):  
M. Pashaei ◽  
S. M. Mousavi
Keyword(s):  
Low Cost ◽  
Structured Light ◽  
Structured Light Scanner

scholarly journals &#8220;OLD AND LOW-COST SENSOR&#8221; FOR MICROPHOTOGRAMMETRY. CASE STUDY: THE EMPEROR <i>MAXIMIANUS HERCULEUS</i>&#8217; MEDALLION AT THE CORRER MUSEUM (VENICE)

2019 ◽  
Vol XLII-2/W17 ◽  
pp. 61-68
Author(s):  
S. Berto ◽  
G. Salemi
Keyword(s):  
Low Cost ◽  
Structured Light ◽  
Three Dimensions ◽  
Roman Emperor ◽  
Distance Analysis ◽  
Visual Computing ◽  
Structured Light Scanner ◽  
Speed Up ◽  
Selection Of

Abstract. The microphotogrammetric survey of the roman emperor Maximianus Herculeus’ medallion, described in this report, demonstrated that, despite the use of an “old” and, nowadays, “low cost” camera sensor it is still possible to obtain a detailed 3D textured model useful for different scientific purposes and virtual enhancement. Here are presented the photogrammetric results reached with the selection of the best solutions in terms of number of images, in order to speed up the entire photogrammetric workflow and pursue the goals previously explained. This medallion is one of the most important examples of roman medallions which belongs to the numismatic collection stored at the Correr Museum in Venice. Its 3D survey was developed as a parallel step of a main project which aims to acquire in three-dimensions, with a structured light scanner, the complete roman collection of medallions. This digitization project proposes to record the volumetric information of these small archaeological remains and to realize an online virtual gallery in the web site of the museum (using 3DHOP, an open source web viewer developed by the Visual Computing Lab of the CNR-ISTI of Pisa). At the end of the microphotogrammetric workflow, a distance analysis was computed to highlight the differences between the meshes obtained with a photogrammetric approach and a structured light scanner.

Integration of close Range Photogrammetry and Structured Light Scanner for Cultural Heritage Documentation

2012 ◽  
Vol 468-471 ◽  
pp. 1966-1969 ◽  
Author(s):  
Jian Wei Liu ◽  
Zhi Qiang Jiang ◽  
Xin Sun ◽  
Hao Hu
Keyword(s):  
Cultural Heritage ◽  
Low Cost ◽  
Structured Light ◽  
Three Dimensional ◽  
Field Work ◽  
Local Area ◽  
3D Shape ◽  
Close Range Photogrammetry ◽  
Structured Light Scanner ◽  
Close Range

This paper proposes an integrated three-dimensional(3D) shape acquiring and digitizing method for cultural heritage documentation by combining industrial close range photogrammetry and structured light scan techniques. The operation principle is introduced, the process of raw data acquisition and data post-processing are presented . A 2.5m high ancient Buddha sculpture of over 1500 years old located in Qingyang, China was measured and modeled to test the availability and reliability of the proposed system. Compare to conventional 3D digitizing methods, the proposed system can potentially meet a number of specific needs in the field of cultural heritage documentation, it is more flexible, low cost, less field work, capable of grabbing the 3D shape of large objects, meanwhile recording accurate detail information of local area, without physically contacting with object surface.

Virtual skeletons: using a structured light scanner to create a 3D faunal comparative collection

2009 ◽  
Vol 36 (9) ◽  
pp. 2018-2023 ◽  
Author(s):  
Laura Niven ◽  
Teresa E. Steele ◽  
Hannes Finke ◽  
Tim Gernat ◽  
Jean-Jacques Hublin
Keyword(s):  
Structured Light ◽  
Structured Light Scanner

scholarly journals DENSE 3D OBJECT RECONSTRUCTION USING STRUCTURED-LIGHT SCANNER AND DEEP LEARNING

2020 ◽  
Vol XLIII-B2-2020 ◽  
pp. 777-783
Author(s):  
V. V. Kniaz ◽  
V. A. Mizginov ◽  
L. V. Grodzitkiy ◽  
N. A. Fomin ◽  
V. A. Knyaz
Keyword(s):  
Optical Flow ◽  
3D Model ◽  
Stereo Matching ◽  
Structured Light ◽  
Primary Source ◽  
Ground Truth ◽  
Complex Surface ◽  
Systems Model ◽  
Structured Light Scanner ◽  
Starting Point

Abstract. Structured light scanners are intensively exploited in various applications such as non-destructive quality control at an assembly line, optical metrology, and cultural heritage documentation. While more than 20 companies develop commercially available structured light scanners, structured light technology accuracy has limitations for fast systems. Model surface discrepancies often present if the texture of the object has severe changes in brightness or reflective properties of its texture. The primary source of such discrepancies is errors in the stereo matching caused by complex surface texture. These errors result in ridge-like structures on the surface of the reconstructed 3D model. This paper is focused on the development of a deep neural network LineMatchGAN for error reduction in 3D models produced by a structured light scanner. We use the pix2pix model as a starting point for our research. The aim of our LineMatchGAN is a refinement of the rough optical flow A and generation of an error-free optical flow B̂. We collected a dataset (which we term ZebraScan) consisting of 500 samples to train our LineMatchGAN model. Each sample includes image sequences (Sl, Sr), ground-truth optical flow B and a ground-truth 3D model. We evaluate our LineMatchGAN on a test split of our ZebraScan dataset that includes 50 samples. The evaluation proves that our LineMatchGAN improves the stereo matching accuracy (optical flow end point error, EPE) from 0.05 pixels to 0.01 pixels.

scholarly journals Structured-Light Based 3D Reconstruction System for Cultural Relic Packaging

Sensors ◽  
2018 ◽  
Vol 18 (9) ◽  
pp. 2981 ◽  
Author(s):  
Limei Song ◽  
Xinyao Li ◽  
Yan-gang Yang ◽  
Xinjun Zhu ◽  
Qinghua Guo ◽  
...  
Keyword(s):  
3D Reconstruction ◽  
High Efficiency ◽  
Low Cost ◽  
Structured Light ◽  
Three Dimensional ◽  
Cloud Data ◽  
Dimensional Measurement ◽  
Cost System ◽  
Three Dimensional Measurement ◽  
Cultural Relics

The non-contact three-dimensional measurement and reconstruction techniques have played a significant role in the packaging and transportation of precious cultural relics. This paper develops a structured light based three-dimensional measurement system, with a low-cost for cultural relics packaging. The structured light based system performs rapid measurements and generates 3D point cloud data, which is then denoised, registered and merged to achieve accurate 3D reconstruction for cultural relics. The multi-frequency heterodyne method and the method in this paper are compared. It is shown that the relative accuracy of the proposed low-cost system can reach a level of 1/1000. The high efficiency of the system is demonstrated through experimental results.

scholarly journals PRECISION AND ACCURACY PARAMETERS IN STRUCTURED LIGHT 3-D SCANNING

2016 ◽  
Vol XL-5/W8 ◽  
pp. 7-15 ◽  
Author(s):  
E. R. Eiríksson ◽  
J. Wilm ◽  
D. B. Pedersen ◽  
H. Aanæs
Keyword(s):  
State Of The Art ◽  
Low Cost ◽  
Structured Light ◽  
Quantitative Measure ◽  
Calibration Procedure ◽  
Design Parameters ◽  
Precision And Accuracy ◽  
Structured Light Systems ◽  
Encoding Strategy ◽  
Cost Components

Structured light systems are popular in part because they can be constructed from off-the-shelf low cost components. In this paper we quantitatively show how common design parameters affect precision and accuracy in such systems, supplying a much needed guide for practitioners. Our quantitative measure is the established VDI/VDE 2634 (Part 2) guideline using precision made calibration artifacts. Experiments are performed on our own structured light setup, consisting of two cameras and a projector. We place our focus on the influence of calibration design parameters, the calibration procedure and encoding strategy and present our findings. Finally, we compare our setup to a state of the art metrology grade commercial scanner. Our results show that comparable, and in some cases better, results can be obtained using the parameter settings determined in this study.

scholarly journals Application of Computer Modeling for Planning Plastic Surgeries

2014 ◽  
Vol 5 (4) ◽  
pp. 18-25
Author(s):  
Klaudia Jamrozik ◽  
Jakub Rusek ◽  
Dominik Szozda ◽  
Krzysztof Karbowski
Keyword(s):  
Reverse Engineering ◽  
Plastic Surgery ◽  
Computer Modeling ◽  
Structured Light ◽  
Visualization Method ◽  
Engineering Technology ◽  
Structured Light Scanner ◽  
Surgery First

Abstract The paper presents the application results of reverse engineering technology for planning the plastic surgery. First step is digitalization of the patient body. It is realized by 3D structured light scanner. The scanning data are transferred into 3dsMax software and used for planning plastic surgery. The planning effect is shown using stereoscopy visualization method.

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