Photogrammetry.

Format:

Book

Author/Creator:

Armstrong, Christopher.

Series:

Collision Reconstruction Methodologies

Collision Reconstruction Methodologies ; v.3A

Language:

English

Subjects (All):

Traffic accident investigation.

Physical Description:

1 online resource (220 pages)

Edition:

1st ed.

Other Title:

Collision Reconstruction Methodologies Volume 3A

Place of Publication:

Warrendale : SAE International, 2018.

Summary:

The last ten years have seen explosive growth in the technology available to the collision analyst, changing the way reconstruction is practiced in fundamental ways. The greatest technological advances for the crash reconstruction community have come in the realms of photogrammetry and digital media analysis. The widespread use of scanning technology has facilitated the implementation of powerful new tools to digitize forensic data, create 3D models and visualize and analyze crash vehicles and environments. The introduction of unmanned aerial systems and standardization of crash data recorders to the crash reconstruction community have enhanced the ability of a crash analyst to visualize and model the components of a crash reconstruction. Because of the technological changes occurring in the industry, many SAE papers have been written to address the validation and use of new tools for collision reconstruction. Collision Reconstruction Methodologies Volumes 1-12 bring together seminal SAE technical papers surrounding advancements in the crash reconstruction field. Topics featured in the series include: * Night Vision Study and Photogrammetry * Vehicle Event Data Recorders * Motorcycle, Heavy Vehicle, Bicycle and Pedestrian Accident Reconstruction The goal is to provide the latest technologies and methodologies being introduced into collision reconstruction - appealing to crash analysts, consultants and safety engineers alike.

Contents:

Cover

Table of contents

Introduction

VOLUME 3A - CHAPTER 1 Determination and Verification of Equivalent Barrier Speeds (EBS) Using PhotoModeler as a Measurement Tool

Selection of Samples

Photomodeler Procedure

Description of the Software

Description of a Generic PhotoModeler Procedure

Camera Calibration

Exemplar Modeling

Crushed Vehicle Modeling

EBS Determination

Crush Coefficient Determination

Computing EBS

Bootstrapping

Results

Within Subjects Design

Between Subjects Design

Conclusion

References

VOLUME 3A - CHAPTER 2 New Algorithm for the Range Estimation by a Single Frame of a Single Camera

Principle of Range Estimation

Procedure of Range-Window Algorithm

Preprocessing

Trinary Image

Binary Image

Process in a Single Window

Line Segmentation

Object Segmentation

Scoring and Best Object-in-Window Determination

Estimation of the Range

Application to Real Image

Condition of Range-Window Algorithm

Measuring System

Measurement and Range Estimation

Variety of Vehicles

Process of RWA

Vehicle Following Test

Discussion

Range Limitation

Vehicle Model

Size of Range-Window

Object at Very Short Range

Applicable Road Condition

Acknowledgments

VOLUME 3A - CHAPTER 3: Use of Photogrammetry in Extracting 3D Structural Deformation/Dummy Occupant Movement Time History During Vehicle Crashes

Test Methods and Materials

VOLUME 3A - CHAPTER 4: Image Analysis of Rollover Crash Tests Using Photogrammetry

Potential Applications of Photogrammetry:

Approach

Processing Tools

Using 3D Modeler In Rollover Analysis

Procedure.

Camera-Matching Photogrammetry

Setup

Analysis

Data Process

Areas for Improvement

Accuracy Determination

Vehicle Kinematics

Acknowledgment

VOLUME 3A - CHAPTER 5: Security Needs for the Future Intelligent Vehicles

Secure Communications, Security Mechanisms, and Attack Types

Secure Communications

Security Mechanisms

Attack Types

Future Vehicle Systems

Inter Vehicle Communications

Ad Hoc networks

Vehicle Positioning systems

In-Vehicle Bus Systems

Vehicle Buses

Modules

Security Attacks

Inter Vehicle Communications Attacks

Ad Hoc Networks

Vehicle Positioning Systems

In-Vehicle Bus System Attacks

Software Attacks

Hardware Attacks

Needs for Securing Vehicle Communication and Information

VOLUME 3A - CHAPTER 6: As-Assembled Suspension Geometry Measurement Using Photogrammetry

The Manual Measurement Process

Evaluation of Extant Spatial Measurement Technologies

A Photogrammetry-Based Measurement System

EOS Systems PhotoModeler Pro 5

Field Calibration

Subpixel Target Marking

Scale

Accuracy

Camera Settings

Measurement Photographs

Targets

Vector Rod-end Targets

Scale Bar

Wheel Surface Targets

Reference Targets

The Photogrammetry Process

Verification

Conclusions

VOLUME 3A - CHAPTER 7 Laser Tracker and Digital Photogrammetry's Merged Process for Large-Scale Rapid Scanning

Fuselage Measurements with the Laser Tracker and Digital Photogrammetry Merged Process

Automated Measurements

Measuring Aircraft Structure

Current Laser Trackers Used in Production

Laser Tracker Performance

Improved Aircraft Structure Measurements.

Laser Tracker and Photogrammetry- Friendly "Combo Targets"

Laser Tracker and Photogrammetry Merged Metrology Performance

Large Area Rapid Scanning (Lars)

Vertical Position Bar

Current Boeing Experimental Examples

Historical Quality Assurance Systems at Boeing

Proposed New Standardized, Real-Time, Production-Monitored Analysis

Definitions, Acronyms, Abbreviations

VOLUME 3A - CHAPTER 8: The Accuracy of Photogrammetry vs. Hands-On Measurement Techniques Used in Accident Reconstruction

Method

Hands-On Measurement

Photogrammetry Measurement

Baseline Total Station Measurements

Summary/Conclusions

CHAPTER 9: Photogrammetric Measurement Error Associated with Lens Distortion

Background

Testing Procedure

Creating an Undistorted Image

Manually Assessing Lens Distortion Coefficients in a Camera

Sample Procedure

Results of the Study

Effect of Lens Distortion in Real-World Measurements

About the Author.

Notes:

Description based on publisher supplied metadata and other sources.

ISBN:

9780768091946

0768091942

OCLC:

1302007801