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A 3-D scanning laser imaging system.

Sun, Wei.

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A 3-D scanning laser imaging system.

Record Type:	Language materials, printed : Monograph/item
Title/Author:	A 3-D scanning laser imaging system./
Author:	Sun, Wei.
Description:	147 p.
Notes:	Adviser: Richard Ce Liu.
Contained By:	Dissertation Abstracts International68-01B.
Subject:	Engineering, Electronics and Electrical. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3250708

A 3-D scanning laser imaging system.
Sun, Wei.

A 3-D scanning laser imaging system. - 147 p.

Adviser: Richard Ce Liu.

Thesis (Ph.D.)--University of Houston, 2006.

Pavement marking materials provide delineation on highways around the world. The condition of the marking materials is very important for the driver's safety as well as for comfort and driving costs. Currently, thermoplastic pavement marking materials (TPMM) are widely used in many states. Measuring the thickness of TPMM on pavement is an essential index for monitoring the contractors, calculating the durability of marking materials and providing better information for the pavement marking evaluation.Subjects--Topical Terms:

626636
Engineering, Electronics and Electrical.

A 3-D scanning laser imaging system.
LDR:02744nam 2200277 a 45 001 947925
005 20110524
008 110524s2006 ||||||||||||||||| ||eng d
035 $a (UMI)AAI3250708
035 $a AAI3250708
040 $a UMI $c UMI
100 1 $a Sun, Wei. $3 1084496
245 1 2 $a A 3-D scanning laser imaging system.
300 $a 147 p.
500 $a Adviser: Richard Ce Liu.
500 $a Source: Dissertation Abstracts International, Volume: 68-01, Section: B, page: 0520.
502 $a Thesis (Ph.D.)--University of Houston, 2006.
520 $a Pavement marking materials provide delineation on highways around the world. The condition of the marking materials is very important for the driver's safety as well as for comfort and driving costs. Currently, thermoplastic pavement marking materials (TPMM) are widely used in many states. Measuring the thickness of TPMM on pavement is an essential index for monitoring the contractors, calculating the durability of marking materials and providing better information for the pavement marking evaluation.
520 $a In recent years, to measure the thickness of TPMM, a procedure involving pre-embedded plates sprayed with the marking materials has been widely accepted. This method is labor intensive and cannot provide a continuous-thickness profile. Therefore, there is a demand for developing a high-speed automatic measuring system for determining the thickness and uniformity of marking materials.
520 $a In this dissertation, a 3-D laser scanning imaging system based on auto-synchronized scanning is developed for the thermoplastic pavement marking materials thickness measurement. Compared to the classical triangulation technique, this approach does not sacrifice the system resolution for the large field of view. To achieve high-speed measurement, a PSD (Position Sensitive Detector) is used in the prototype system instead of a CCD (Charge Couple Device), which is usually used in the common imaging system. By using a galvanometer scanner, the system can scan 100 lines per second. Compared to the previous push cart mechanical scanning thickness measurement device (developed by Yuanhang Chen in the Subsurface Sensing Lab), which gives two scan lines per second, the new system is more suitable for highway speed measurement. The system is tested both in the lab and on the real highway pavement with different marking materials. The result shows the great potential of this system to be applied in TPMM thickness measurement.
590 $a School code: 0087.
650 4 $a Engineering, Electronics and Electrical. $3 626636
690 $a 0544
710 2 $a University of Houston. $3 1019266
773 0 $t Dissertation Abstracts International $g 68-01B.
790 $a 0087
790 1 0 $a Liu, Richard Ce, $e advisor
791 $a Ph.D.
792 $a 2006
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3250708