3D LiDAR Scanning
Laser Scanning provides the ability to capture the existing conditions to a high
degree of accuracy, and review the data multiple times for various uses.
In July 2001, Northway-Photomap Inc. purchased North America's first ILRIS 3D
laser scanner, and became the first service agency offering laser scanner
services with a dynamic range in a single scan of 3m to 1500m, and point to
point accuracy of 10mm.
Since this time, we have purchased 3 more scanners. The NextEngine desktop 3D
scanner, the Optix and our newest addition to the family is a FARO LS 880. With
our full compliments of scanners we can meet any scanning requirements you have.
Click here to view a real 3D LiDAR movie!
We have completed numerous projects for a wide variety application including
those listed below.
Busy Highway Engineering Application
Topographic Surveying
Topographic Mapping Updates
Mining Surveying
Landfill Site Measurements & Volumes
Manufacturing Retrofits
Cultural and Historic Surveys
Detailed Surveying At Airports
Construction Inspection
Safety & Production Sensitivity Surveys
Quantity Surveys
Golf Course Surveys
Petrochemical Surveys
Industrial Sites
Ships for Retrofit
Power Plants
Facility Inspection
Accident and Forensic
Archaeology Site Surveys
Animation base Data (Wire Frame)
What does each scanner do?
Ilris-3D (Intelligent Laser Ranging and Imaging System) collects and defines the
immediate area around the setup location of the scanner. Once setup by the operator,
the scanner emits 2000 laser pulses per second which locates all features in a
40 degree x 40 degree field of view to an accuracy of 10mm. Two highly calibrated
mirrors inside the unit direct each laser pulse such that the direction of the
pulse is known. The scanner records the time lapse from pulse emission to the
receipt of the return signal, calculates the distance based on the time of flight,
joins the distance with the angles of the mirrors and a position in space is known
for the returned laser pulse. In addition to the position, all objects reflect the
laser light at different levels such that this returned level of laser light is mapped
into a gray scale image for viewing purposes by the client. For areas that are larger
than the scanner's field of view, multiple scans are completed and joined during post
processing such that a complete area can be converted from reality to virtual reality.
In 2004, Northway-Photomap Inc. added to ILRIS-3D the ability to transfer colour
from high resolution digital images to each data point collected, such that the
scanned 3D images now appear in colour. Each of the scanned data points is assigned
an RGB value such that the images appear in colour, and retain the ability to be
viewed, measured, or inspected from any angle desired by the client.
If you have not seen it yet, click here to view a real 3D LiDAR movie!
The NextEngine scanner is used for small object scanning. The field size in the
macro mode is 13 cm x 9.6 cm and in the wide mode it's 34 cm x 25.5 cm. The
dimensional accuracy for the macro mode is approximately 0.012 cm and in the wide
mode approximately 0.038 cm. The acquisition speed of the scanner is 50,000 processed
points per second and in a typical small model are about quarter-million points,
after oversampling and optimization. The NextEngine uses a MultiStripe Laser
Triangulation (MLT) technology with twin arrays of four, Class 1M solid state
lasers with custom optics. It also takes the RGB colour texture capture for
precision-locked geometry correlation. The scans can be imported to SolidWorks
or can also be output into a STL, VRML and other formats for exchange with other systems.
The Optix 400L scanner is used for small to medium size objects. The depth of field
is in a range of 30 cm to 90 cm. At 30 cm the resolution is approximately 0.017 cm
and at 90 cm it's approximately 0.05 cm. The point density is up to 1000 x 1000
and the field of view is 30 degrees. This scanner can scan an area of about 1.5
square feet in a range between 30 cm and 90 cm.
The FARO LS 880 is used for medium to large size objects or areas. This is a phase
shift scanner with a range of up to 75 meters. The measurement speed is 120,000
points per second with a 3 mm accuracy. The vertical field of view is 320 degrees
and 360 degrees for horizontal field of view. The color kit enables us to capture
parallax free colored laser scans.
What do I get as a final Product?
Upon completion of the project, all raw data files are provided to the client,
with a viewer of the data so they can review the data themselves. Depending upon
the project requirements, AutoCAD, Microstation, or other format deliveries are
available for the point clouds, or the data can be converted into a vector file
for various applications. Our LiDAR specialists would be pleased to discuss your
requirements in detail.
We are Equipped for your project.
Having been the first in LiDAR service work with an ILRIS-3d scanner, we have
developed a series of applications for our system to suit your needs. Safety is
the foremost requirement for all projects involving your staff and ours, that is
one reason we selected the ILRIS-3D scanner. ILRIS-3D is completely eyesafe in
all modes of operation, even when its invisible beam is viewed directly through
binoculars. We can capture information regarding unsafe conditions from safe
locations using the large dynamic range of 3m up to 1000m, and a small generator,
which we provide, provides the power requirements.
Northway-Photomap Inc. has also developed many methods of capturing the data
required. From an elevated position in the rear of a pickup truck, an elevated
position inside a building, a rolling truck on a rail line, or the standard
surveyors tripod in the required locations.
Northway-Photomap Inc. has been producing ILRIS-3D laser Scans for the past six
years, our experience will provide you with insight and your project data in
the shortest possible time. Contact us at your convenience to discuss your
requirements, or to request a demonstration disk for viewing of sample data.
If you are interested in a demo or would like more information please
contact Steve Dixon at 1-800-663-9876.
|
|
|
