Landscapes - Spring 2021 - 28

FOCUS

7

plants by adjusting components within the
virtual model or just leave virtual markups/
notes for further studies.
We have been using virtual design
expressions internally in the office for
years to test options and critique our
own work. Now we can easily explain
the true attributes and principles of
design at a human 1:1 scale without the
misinterpretation of a rendered plan or
perspective graphic. If " a picture is worth a
thousand words, " then the value of a virtual
site visit with clients will be priceless if there
are design attributes that are difficult to
communicate otherwise.

Site Inventory, Analysis and
3D Documentation
A conventional site inventory and
analysis involves multiple disciplines
including landscape architects, arborists,
geotechnical engineers, surveyors,
environmental scientist heritage
specialists, etc. Some of the basic building
blocks include a survey plan, site photos
and critical site measurements. Sometimes
this information is limiting for complex
sites, especially sites that have complex
topographies with unique built and natural
features like rock outcrops, detailed
wetland conditions, etc. A more truly
accurate technique in capturing site data
is by augmenting a LiDAR scan, or using
photogrammetry techniques, to perform a
3D scan of the site.

7 DESIGN SIMULATION OF NEW RETAINING WALL
AT THE PROXIMITY OF THE EXISTING CRUMBLED
WALL 8 THREE COMPUTER ANIMATIONS HELPED
TO SIMULATE THE SENSATION AT 60KM/HR FROM
THE DRIVER'S PERSPECTIVE 9 TABLE SIZE SAND
MODEL (LEFT); IMPORTED 3D SCAN MODEL OF
THE SAND MODEL IN A 3D SOFTWARE (RIGHT)

28 LANDSCAPES | PAYSAGES

8

A site scan captures the site or any specific
site elements (e.g., ground features, fence,
rocks, tree trunk location, etc.) in a threedimensional representation of " points "
with individual XYZ coordinates. While they
independently exist in a virtual space, they
are positioned relative to each other. When
looking at these points from a distance, they
resemble a photograph, but in fact, they
are individual points at close-up (Fig. 2).
Hence the name " Point Cloud " model. This
is the foundation from which we extract
information to become a 3D digital terrain
model that can be used for site analysis or
3D documentation.
To be sure that we can achieve accuracy
for the purpose of analysis, we have
conducted accuracy comparison between
the real-world physical object and our 3D
scan model. Figure 3 shows the difference
in measurements between the object and
the scan to be 1/100 of an inch (0.03mm).
In other words, our scan model is a " digital
twin " of the real-world counterpart. This
means we are taking the entire site at

millimetre accuracy back to our office for
detailed site analysis.
Figure 4 shows the " digital twin " of the Bluff
landscape sculpture in Trillium Park, Ontario
Place. This image is a blended composite
of the 3D scan model onto a photo of the
actual Bluff for visual comparison between
the two. The 3D model reflects all the
features of the Bluff used as our in-house 3D
documentation.
The advantage of using a detailed 3D
scan model of a crumbled retaining wall
is demonstrated in Figures 5 and 6. Not
only we can conduct a whole series of
" virtual activities " within the model such
as observation and measurements (Fig. 5),
slope analysis (Fig. 6), etc., it also provides
safety for the staff. As can be seen from
the slope analysis image (Fig. 6), this
crumbled retaining wall is located at a severe
40% slope with a subsequent 6m drop. It
would be dangerous to reach and perform
measurements. Virtual measurements
provide safety, and can be taken at any point
in the model from the comfort of the office.



Landscapes - Spring 2021

Table of Contents for the Digital Edition of Landscapes - Spring 2021

TO BEGIN WITH | POUR COMMENCER
OUR WRITERS | NOS RÉDACTEURS
PROLOGUE
TECHNOLOGY AND THE CHANGING LANDSCAPE
VIRTUALIZATION OF THE LANDSCAPE DESIGN PROCESS
LE PAYSAGE VIRTUEL COMME OUTIL DE TRAVAIL
DATA-DRIVEN ZONING CODES FOR CLIMATE ACTION
3D FAX MACHINES
LA TECHNOLOGIE À LA RESCOUSSE DE LA SENSIBILITÉ
CRITIQUE
INTERVIEW
FORUM
THE PARTING SHOT | UNE DERNIÈRE SALVE
Landscapes - Spring 2021 - Intro
Landscapes - Spring 2021 - 1
Landscapes - Spring 2021 - 2
Landscapes - Spring 2021 - 3
Landscapes - Spring 2021 - 4
Landscapes - Spring 2021 - 5
Landscapes - Spring 2021 - 6
Landscapes - Spring 2021 - 7
Landscapes - Spring 2021 - TO BEGIN WITH | POUR COMMENCER
Landscapes - Spring 2021 - 9
Landscapes - Spring 2021 - OUR WRITERS | NOS RÉDACTEURS
Landscapes - Spring 2021 - 11
Landscapes - Spring 2021 - 12
Landscapes - Spring 2021 - 13
Landscapes - Spring 2021 - PROLOGUE
Landscapes - Spring 2021 - 15
Landscapes - Spring 2021 - 16
Landscapes - Spring 2021 - 17
Landscapes - Spring 2021 - 18
Landscapes - Spring 2021 - 19
Landscapes - Spring 2021 - TECHNOLOGY AND THE CHANGING LANDSCAPE
Landscapes - Spring 2021 - 21
Landscapes - Spring 2021 - 22
Landscapes - Spring 2021 - 23
Landscapes - Spring 2021 - 24
Landscapes - Spring 2021 - 25
Landscapes - Spring 2021 - VIRTUALIZATION OF THE LANDSCAPE DESIGN PROCESS
Landscapes - Spring 2021 - 27
Landscapes - Spring 2021 - 28
Landscapes - Spring 2021 - 29
Landscapes - Spring 2021 - 30
Landscapes - Spring 2021 - 31
Landscapes - Spring 2021 - LE PAYSAGE VIRTUEL COMME OUTIL DE TRAVAIL
Landscapes - Spring 2021 - 33
Landscapes - Spring 2021 - DATA-DRIVEN ZONING CODES FOR CLIMATE ACTION
Landscapes - Spring 2021 - 35
Landscapes - Spring 2021 - 36
Landscapes - Spring 2021 - 37
Landscapes - Spring 2021 - 3D FAX MACHINES
Landscapes - Spring 2021 - 39
Landscapes - Spring 2021 - LA TECHNOLOGIE À LA RESCOUSSE DE LA SENSIBILITÉ
Landscapes - Spring 2021 - 41
Landscapes - Spring 2021 - 42
Landscapes - Spring 2021 - 43
Landscapes - Spring 2021 - CRITIQUE
Landscapes - Spring 2021 - 45
Landscapes - Spring 2021 - INTERVIEW
Landscapes - Spring 2021 - 47
Landscapes - Spring 2021 - 48
Landscapes - Spring 2021 - 49
Landscapes - Spring 2021 - 50
Landscapes - Spring 2021 - 51
Landscapes - Spring 2021 - 52
Landscapes - Spring 2021 - 53
Landscapes - Spring 2021 - FORUM
Landscapes - Spring 2021 - 55
Landscapes - Spring 2021 - 56
Landscapes - Spring 2021 - 57
Landscapes - Spring 2021 - 58
Landscapes - Spring 2021 - 59
Landscapes - Spring 2021 - 60
Landscapes - Spring 2021 - 61
Landscapes - Spring 2021 - 62
Landscapes - Spring 2021 - 63
Landscapes - Spring 2021 - 64
Landscapes - Spring 2021 - 65
Landscapes - Spring 2021 - THE PARTING SHOT | UNE DERNIÈRE SALVE
Landscapes - Spring 2021 - 67
Landscapes - Spring 2021 - 68
Landscapes - Spring 2021 - LPplus1
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Landscapes - Spring 2021 - LPplus14
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Landscapes - Spring 2021 - LPplus16
Landscapes - Spring 2021 - LPplus17
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Landscapes - Spring 2021 - LPplus19
Landscapes - Spring 2021 - LPplus20
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Landscapes - Spring 2021 - LPplus22
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Landscapes - Spring 2021 - LPplus30
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