reworks
vorks can be
the maps,
‚The area
; up the
ng the
rinting.
praised by
aya (names
ion of Edo.
s, and in the
r colors were
hem colorful
white ones.
to which one
momentary
of them lead
| of the dark
nsible people
he climax of
agawa River,
bamata and
o and give
various local
held during
of spectators
ework event
in summer
s. Fireworks
inary people.
This paper drew up a fireworks viewing area map that
describes where fireworks can be seen well using
photogrammetry on the basis of the above japanese
cultural factors relating to fireworks. In this paper, the
fireworks viewing area map was drawn up to the level
of a thematic map from the geographical point of view,
unlike a recreational illustration map. Information on
the fireworks viewing area is useful information to
establish the site for the festival, control traffic, guards,
location to see fireworks for the host organization and
spectators.
On drawing up the maps, mosaic aerial photographs
with a 360 degree visual field are taken from a height
over the spot for fireworks by a kite balloon camera
system. The area from where fireworks can be seen
well is the same area taken by aerial photography. This
method has many advantages: for example, it can
survey without much assistance and can get plane
information, furthermore the state of affairs is
recorded in photographs so that the work of drawing up
a map is easy to do. The paper draws up the fireworks
viewing area map of Narashino city.
2. Outline of Narashino City fireworks display
festival
Narashino city is a middle seaside town near Tokyo.
The population is 150,000. Narashino city opens a
fireworks display festival for the citizens of Narashino
city, under the sponsorship of Narashino city
government as a yearly event in summer. The place for
the fireworks display festival is seaside reclaimed land
in the city. Around the place, there are warehouses,
offices, residential streets, parks, vacant lots, a public
cemetery etc, and multi-storied buildings of companies
and a university lie scattered around.
In 1995,the fireworks display festival was opened on
the 30 of June and so many citizens flocked to the place
for the fireworks display festival. The faraway citizens
were transported to the place by shuttle bus sent by the
city office. The sum of displayed fireworks is 4,500,
made up as follows: grand-scale fireworks 1,226,
skyrockets 33,
Fireworks display spot height is from about 100m to
about 150m. Figure.1 shows the state of the place of
Narashino city fireworks display festival.
set piece of fireworks one, etc.
3. Aerial Photograpy using a Kite Balloon
305
3.1 Observation system
This system was developed for the purpose of taking
oblique aerial photographs from a height over the spot
for fireworks by the authors. Figure.2 shows outline of
this system. This system is composed of following
elements
- Balloon; 14m 2 helium gas
+ String; 1,000 meter
- Still camera; 35mm, wide angle, f = 28mm(Canon T70)
- Monitor camera;Sony CCD camera
: Radio control; Shutter, monitor and angle control
—Horizontal 360 degree
— Vertical --90 degree
* Total payload;7,0kg
Fig.1 Place of fireworks display festival
Kite balloon
M
Fireworks
display
spot Fireworks
height display
100m-—150m Monitor camera festival
35mm still camera place
Radio
-
control ^, Monitor
Launching site [n]
MS
Fig. 2 System Outline
3.2 Aerial Photograpy using a Kite Balloon
We took oblique aerial photographs utilizing a kite
balloon camera system using a 35 mm servo-controlled
camera that was developed by the authors. The oblique
aerial photographs were taken from a height over the
spot for the fireworks display from 100 m,120m and150
m high. Figure.3 is the photographing scene. Figure.4
International Archives of Photogrammetry and Remote Sensing. Vol. XXXI, Part B5. Vienna 1996