Correction of World Coordinate Error in the Three-Dimensional Laser Scanning System of Human Body

2012 ◽  
Vol 198-199 ◽  
pp. 1016-1020
Author(s):  
Xiao Jie Li ◽  
Bao Zhen Ge
Keyword(s):  
Human Body ◽  
Laser Scanning ◽  
Three Dimensional ◽  
Scanning System ◽  
Vertical Column ◽  
Correction Model ◽  
The World ◽  
Coordinate Correction ◽  
Laser Scanning System ◽  
Coordinate Error

This paper studies three-dimensional laser scanning system of human body, and make adjustments according to the world coordinate error correction based on the point cloud obtained. This paper also analyzed the cause and characteristics of three-dimensional laser scanning system’s world coordinates error, and established the world coordinate correction model on the condition that vertical column coordinate error is not included in the calibration plane and the error is minimum relative to other highly cross-section. With a standard rectangular timber as the scan objects, correction factor is fitted and the effectiveness of this method is proved through experiments in which point cloud’s world coordinate error is significantly reduced.

Recognition and repairing of surface hole in three dimensional laser scanning system

2016 ◽  
Vol 9 (1) ◽  
pp. 114-121
Author(s):  
吕源治 LYU Yuan-zhi ◽  
孙 强 SUN Qiang ◽  
毕国玲 BI Guo-ling
Keyword(s):  
Laser Scanning ◽  
Three Dimensional ◽  
Scanning System ◽  
Laser Scanning System

3D Laser Scanner and its Application in Engineering Survey

2013 ◽  
Vol 671-674 ◽  
pp. 2111-2114
Author(s):  
Yan Ping Feng ◽  
Wei Guo Li ◽  
Li Bing Yang ◽  
Yan Li Gao ◽  
Wen Bin Li
Keyword(s):  
Laser Scanning ◽  
Dimensional Space ◽  
Three Dimensional ◽  
Laser Scanner ◽  
Target Object ◽  
Scanning System ◽  
3 Dimensional ◽  
Working Principle ◽  
Laser Scanning System ◽  
Three Dimensional Space

3D laser scanning system is to use laser ranging principle to record intensively the 3D coordinates, reflectivity and texture information on the surface of the target object. It makes a real record of the three-dimensional space, which makes traditional measurement be released from the limit that couldn’t be exceeded in the past, and let the measurement precision up to a new level. At the same time, it has provided extensive researches with better help than ever. This paper mainly discusses the characteristics, working principle, application and future development of the ground 3 dimensional laser scanner.

Research on 3D Reconstruction of the Facial Surface Reverse Engineering

2011 ◽  
Vol 201-203 ◽  
pp. 113-116 ◽  
Author(s):  
Jie Yang ◽  
Lei Zhao
Keyword(s):  
Computer Aided Design ◽  
Laser Scanning ◽  
Three Dimensional ◽  
Scanning System ◽  
3D Face Reconstruction ◽  
Surface Integration ◽  
Computer Aided ◽  
Point Data ◽  
Aided Design ◽  
Laser Scanning System

According to the surface integration of laser technology and computer-aided design and computer-aided manufacturing technology (CAD & CAM), a method that is rebuilt surface of three-dimensional facial reconstruction has been explored. A laser scanning system is used to collect the 3D discrete point data of the facial model, which will be cut up by their characteristics and curvature in order to make a 3D face reconstruction. The maximum reconstructive error is 0.2174mm. Application results indicate that the proposed method is quite satisfactory for facial reconstructive surgery, rehabilitation design and plastic surgery.

scholarly journals HYBRID 3D PRINTER FOR LAYER-BY-LAYER FORMATION OF STRUCTURES WITH CONDUCTIVE TOPOLOGY

2021 ◽  
Vol 8 ◽  
pp. 40-46
Author(s):  
Victor P. Bessmeltsev ◽  
Nikolay B. Goloshevsky ◽  
Denis H. Katasonov
Keyword(s):  
Laser Scanning ◽  
Three Dimensional ◽  
Recording System ◽  
Scanning System ◽  
3D Printer ◽  
Layer By Layer ◽  
Layer Formation ◽  
Formation Zone ◽  
Local Conductivity ◽  
Laser Scanning System

The paper presents the main characteristics and functionality of a hybrid 3D-printer created at the Institute of Automation and Electrometry SB RAS, containing a portal recording system with dispenser heads for digital inkjet printing and a laser scanning system for subsequent post-processing with precise alignment software. The formation zone is located on a mobile platform moving along the Z coordinate. This design makes it possible, by layer-by-layer additive synthesis, to form three-dimensional structures with given local conductivity.

Measurement of a Single Standing Tree Volume Based on Three-Dimensional Laser Scanner System

2014 ◽  
Vol 490-491 ◽  
pp. 1470-1474
Author(s):  
Jia Zhu Zheng
Keyword(s):  
Laser Scanning ◽  
Three Dimensional ◽  
Laser Scanner ◽  
Scanning System ◽  
Standing Tree ◽  
Stand Volume ◽  
New Approach ◽  
Specific Process ◽  
Laser Scanning System ◽  
Shape And Size

With the application of the three-dimensional laser scanner, it makes possible that measure the shape and size of the sanding tree accurately. In this paper we put forward a new approach to reckon the volume of a single standing tree with three-dimensional laser scanner, explain the principle of the three-dimensional laser scanning system and how to establish the model of a single standing tree based on three-dimensional laser scanner and computer program. We have a test for a single standing tree volume with three-dimensional laser scanner, and also expatiate the specific process of reckoning the volume of a single standing tree with the model. As shown by the test, we can work out fast and exactly the single standing tree volume. If the approach can be apply on the measurement of stand volume, there has a great improvement in the precision and efficiency of measurement.

Assessment of facial asymmetry in growing subjects with a three-dimensional laser scanning system

2012 ◽  
Vol 15 (4) ◽  
pp. 237-244 ◽  
Author(s):  
J. Primozic ◽  
G. Perinetti ◽  
A. Zhurov ◽  
S. Richmond ◽  
M. Ovsenik
Keyword(s):  
Laser Scanning ◽  
Three Dimensional ◽  
Facial Asymmetry ◽  
Scanning System ◽  
Laser Scanning System

scholarly journals AUTOMATIC ROAD STRUCTURE DETECTION AND VECTORIZATION USING MLS POINT CLOUDS

2019 ◽  
Vol XLII-2/W13 ◽  
pp. 1069-1075 ◽  
Author(s):  
X. Mi ◽  
B. Yang ◽  
C. Chen ◽  
M. Yang ◽  
Z. Dong
Keyword(s):  
Free Space ◽  
Laser Scanning ◽  
Three Dimensional ◽  
Point Clouds ◽  
Scanning System ◽  
The Road ◽  
Structure Detection ◽  
Dimensional Boundary ◽  
On The Road ◽  
Laser Scanning System

<p><strong>Abstract.</strong> Accurate three-dimensional road structures and models are of great significance to intelligent transportation applications, such as vehicle navigation, inventory evaluation, construction quality control, self-driving vehicles and so on. This paper proposes an efficient and robust method to automatically extract structured road curbs from mobile laser scanning (MLS) data. The proposed method mainly consists of three steps: efficient supervoxel generation, road curbs detection and driving free space estimation. First, supervoxels are generated by assigning ground points with similar geometrical characteristics into the same group. Second, supervoxels with higher local projection density and height difference are identified and clustered as initial road curbs, which are continuous vertical curb facets. The continuous facades consisting of lots of scanned points on the road shoulder can be modeled as multi-dimensional boundary models depending on the requirements of the application, such as vector lines with or without height, micro-facades, etc. Finally, driving free space is obtained due to the road limits can be defined by road boundary in most scenarios. The proposed method is tested on two complex datasets acquired by an Alpha3D mobile laser scanning system from the urban area of Shanghai, China. Experimental results show that the road boundaries and driving free space can be accurately and efficiently extracted, which also demonstrates the superiority of the proposed method.</p>

Three Dimensional Laser Scanning System Applied to the Swelling Earthwork Estimation after Garbage Landfill Dredged

2013 ◽  
Vol 838-841 ◽  
pp. 2062-2065
Author(s):  
Tian Chyuan Chan
Keyword(s):  
Laser Scanning ◽  
Three Dimensional ◽  
Land Development ◽  
Ground Level ◽  
Scanning System ◽  
Swelling Rate ◽  
Survey Instruments ◽  
Terrain Elevation ◽  
Laser Scanning System ◽  
Land Space

Because of rapid population growth in urban development, land development needs to be expanded. The existing landfill is usually required to be removed to attain more available land space and to improve the environments for the metropolitan area. When the landfill above the ground level is dredged and removed, due to the swelling phenomenon of the underground landfill, the terrain elevation may change over time. This usually causes disputes between landlord and contractor on the actual amount of dredged earthwork. This study will use both traditional survey instruments and modern three dimensional laser scanning instruments to measure the ground elevation change with time. The swelling rate at different periods of time will be computed. These results may provide a useful reference for similar future cases.

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