Agronomy,
Год журнала:
2023,
Номер
13(11), С. 2800 - 2800
Опубликована: Ноя. 12, 2023
Northern
Slopes
of
Tianshan
Mountain
(NSTM)
in
Xinjiang
hold
significance
as
a
principal
agricultural
hub
within
the
region’s
arid
zone.
Accurate
crop
mapping
across
vast
expanses
is
fundamental
for
intelligent
monitoring
and
devising
sustainable
strategies.
Previous
studies
on
multi-temporal
classification
have
predominantly
focused
single-point
pixel
temporal
features,
often
neglecting
spatial
data.
In
large-scale
tasks,
by
using
information
around
pixel,
contextual
relationships
can
be
obtained
to
reduce
possible
noise
interference.
This
research
introduces
multi-scale,
framework
centered
ConvGRU
(convolutional
gated
recurrent
unit).
By
leveraging
attention
mechanism
Strip
Pooling
Module
(SPM),
multi-scale
feature
extraction
module
has
been
designed.
accentuates
vital
spectral
enhancing
clarity
edges
reducing
misclassifications.
The
fusion
integration
features
from
various
periods
bolster
precision.
Using
Sentinel-2
imagery
spanning
May
October
2022,
datasets
cotton,
corn,
winter
wheat
NSTM
were
generated
framework’s
training
validation.
results
demonstrate
an
impressive
93.03%
accuracy
10
m
resolution
15-day
interval,
12-band
data
three
crops.
method
outperforms
other
mainstream
methods
like
Random
Forest
(RF),
Long
Short-Term
Memory
(LSTM),
Transformer,
Temporal
Convolutional
Neural
Network
(TempCNN),
showcasing
kappa
coefficient
0.9062,
7.52%
2.42%
improvement
Overall
Accuracy
compared
RF
LSTM,
respectively,
which
potential
our
model
tasks
enable
high-resolution
NSTM.
Remote Sensing,
Год журнала:
2023,
Номер
15(21), С. 5088 - 5088
Опубликована: Окт. 24, 2023
Remote
sensing
technology
has
become
a
popular
tool
for
crop
classification,
but
it
faces
challenges
in
accurately
identifying
crops
areas
with
fragmented
land
plots
and
complex
planting
structures.
To
address
this
issue,
we
propose
an
improved
method
identification
high-resolution
remote
images,
achieved
by
modifying
the
DeepLab
V3+
semantic
segmentation
network.
In
paper,
typical
area
Jianghuai
watershed
is
taken
as
experimental
area,
Gaofen-2
satellite
images
high
spatial
resolutions
are
used
data
source.
Based
on
original
model,
CI
OSAVI
vegetation
indices
added
to
input
layers,
MobileNet
V2
backbone
Meanwhile,
upper
sampling
layer
of
network
added,
attention
mechanism
ASPP
layers.
The
accuracy
verification
results
shows
that
MIoU
PA
model
test
set
reach
85.63%
95.30%,
IoU
F1_Score
wheat
93.76%
96.78%,
rape
74.24%
85.51%,
respectively.
significantly
better
than
other
related
models.
proposed
paper
can
extract
distribution
information
from
images.
This
provides
new
technical
approach
application
rape.
IET Computer Vision,
Год журнала:
2025,
Номер
19(1)
Опубликована: Янв. 1, 2025
ABSTRACT
This
study
presents
a
novel
approach
to
crop
mapping
using
remotely
sensed
satellite
images.
It
addresses
the
significant
classification
modelling
challenges,
including
(1)
requirements
for
extensive
labelled
data
and
(2)
complex
optimisation
problem
selection
of
appropriate
temporal
windows
in
absence
prior
knowledge
cultivation
calendars.
We
compare
lightweight
Dynamic
Time
Warping
(DTW)
method
with
heavily
supervised
Convolutional
Neural
Network
‐
Long
Short‐Term
Memory
(CNN‐LSTM)
high‐resolution
multispectral
optical
imagery
(3
m/pixel).
Our
integrates
effective
practical
preprocessing
steps,
augmentation
data‐driven
strategy
window,
even
presence
numerous
classes.
findings
demonstrate
that
DTW,
despite
its
lower
demands,
can
match
performance
CNN‐LSTM
through
our
steps
while
significantly
improving
runtime.
These
results
both
DTW
achieve
deployment‐level
accuracy
underscore
potential
as
viable
alternative
more
resource‐intensive
models.
The
also
prove
effectiveness
windowing
runtime
study,
no
planting
timeframes.
Remote Sensing,
Год журнала:
2024,
Номер
16(6), С. 1035 - 1035
Опубликована: Март 14, 2024
This
study
aims
to
understand
the
spatiotemporal
changes
in
patterns
of
tropical
crop
cultivation
Eastern
Thailand,
encompassing
periods
before,
during,
and
after
COVID-19
pandemic.
Our
approach
involved
assessing
efficacy
high-resolution
(10
m)
Sentinel-2
dense
image
time
series
for
mapping
smallholder
farmlands.
We
integrated
harmonic
regression
random
forest
map
a
diverse
array
types
between
summer
2017
2023,
including
durian,
rice,
rubber,
eucalyptus,
oil
palm,
pineapple,
sugarcane,
cassava,
mangosteen,
coconut,
other
crops.
The
results
revealed
an
overall
accuracy
85.6%,
with
several
exceeding
90%.
High-resolution
imagery
demonstrated
particular
effectiveness
situations
involving
intercropping,
popular
practice
simultaneously
growing
two
or
more
plant
species
same
patch
land.
However,
we
observed
overestimation
majority
studied
cash
crops,
primarily
those
located
young
plantations
open
tree
canopies
grass-covered
ground
surfaces.
adverse
effects
pandemic
were
specific
labor-intensive
rubber
but
limited
short
term.
No
discernible
impact
was
noted
across
entirety
timeframe.
In
comparison,
financial
gain
climate
change
appeared
be
pivotal
influencing
farmers’
decisions
regarding
cultivation.
Traditionally
dominant
crops
such
as
rice
palm
have
witnessed
decline
cultivation,
reflecting
decade-long
trend
price
drops
preceding
Conversely,
Thai
durian
has
seen
significant
upswing
even
over
pandemic,
which
ironically
served
catalyst
prompting
farmers
adopt
e-commerce
meet
surging
demand,
particularly
from
China.
Sustainability,
Год журнала:
2023,
Номер
15(12), С. 9210 - 9210
Опубликована: Июнь 7, 2023
Grain
yield
prediction
affects
policy
making
in
various
aspects
such
as
agricultural
production
planning,
food
security
assurance,
and
adjustment
of
foreign
trade.
Accurately
predicting
grain
is
great
significance
ensuring
global
security.
This
paper
based
on
the
MODIS
remote
sensing
image
data
products
from
2010
to
2020,
adds
band
information
vegetation
index
temperature
form
composite
a
dataset.
Aiming
at
lack
models
for
large-scale
forecasting
need
human
intervention
traditional
models,
this
proposes
estimation
model
deep
learning.
First,
cropping
mapping
techniques
are
used
process
generate
training
samples.
Then
channel
spatial
attention
mechanism
(convolutional
block
module,
CBAM)
added
extract
different
bands
improve
efficiency
model.
Long
short-term
memory
(LSTM)
neural
networks
obtain
feature
time
dimension.
Finally,
national-scale
constructed.
After
study,
it
was
found
that
LSTM
using
combination
multi-source
satellite
images
an
can
effectively
predict
China.
Furthermore,
proposed
tested
2018
2020
showing
average
R2
0.940
RMSE
80,020
tons,
indicating
Chinese
better.
The
extracts
directly
data,
solves
problem
small-scale
research
imprecise
end-to-end
manner.
Remote Sensing,
Год журнала:
2023,
Номер
15(16), С. 4055 - 4055
Опубликована: Авг. 16, 2023
Rice
has
always
been
one
of
the
major
food
sources
for
human
beings,
and
monitoring
planning
cultivation
areas
to
maintain
security
achieve
sustainable
development
is
critical
this
crop.
Traditional
manual
ground
survey
methods
have
recognized
as
being
laborious,
while
remote-sensing
technology
can
perform
accurate
mapping
paddy
rice
due
its
unique
data
acquisition
capabilities.
The
recently
emerged
Google
Earth
Engine
(GEE)
cloud-computing
platform
was
found
be
capable
storing
computing
resources
required
rapid
processing
massive
quantities
data,
thereby
revolutionizing
traditional
analysis
patterns
offering
advantages
large-scale
crop
mapping.
Since
phenology
depends
on
local
climatic
conditions,
considering
vast
expanse
China
with
outstanding
geospatial
heterogeneity,
a
zoning
strategy
proposed
in
study
separate
monsoon
climate
zone
into
two
regions
based
Qinling
Mountain–Huaihe
River
Line
(Q-H
Line),
discrepant
basic
algorithms
adopted
separately
map
mid-season
nationwide.
For
northern
regions,
optical
indices
calculated
Sentinel-2
images,
growth
spectral
profiles
constructed
identify
phenological
periods,
mapped
using
One-Class
Support
Vector
Machine
(OCSVM);
southern
microwave
sequences
Sentinel-1
Random
Forest
(RF).
By
applying
methodological
system,
at
10
m
spatial
resolution
GEE
entire
Chinese
region
2021.
According
accuracy
evaluation
coefficients
publicly
released
statistical
yearbook
relative
error
each
province
limited
10%,
overall
exceeded
85%.
results
could
indicate
that
more
accurately
efficiently
China-wide
scale
relatively
few
samples
methods.
adjusting
parameters,
time
interval
also
further
extended.
powerful
competence
used
large
scale,
help
governments
ascertain
distribution
across
country
short-term
period,
which
would
well
suited
meeting
increasingly
efficient
fine-grained
decision-making
management
requirements.
Technology in Agronomy,
Год журнала:
2024,
Номер
4(1), С. 0 - 0
Опубликована: Янв. 1, 2024
The
rapid
advancement
of
artificial
intelligence,
coupled
with
the
utilization
aerial
images
from
Unmanned
Aerial
Vehicles
(UAVs),
presents
a
significant
opportunity
to
enhance
precision
agriculture
for
crop
classification.
This
is
vital
meet
rising
global
food
demand.
In
this
study,
effectiveness
an
8-layer
AlexNet,
Convolutional
Neural
Network
(CNN)
variant
was
investigated
automatic
A
DJI
Mavic
UAV
employed
capture
high-resolution
mixed-crop
farm
while
adopting
iterative
training
approach
both
AlexNet
and
conventional
CNN
model.
Comparison
based
on
performance
done
between
these
models
across
various
epochs
assess
impact
model's
performance.
Findings
study
consistently
demonstrated
that
outperformed
throughout
all
epochs.
achieved
its
highest
at
60
epochs,
validation
accuracies
62.83%
46.98%,
respectively.
contrast,
reached
peak
99.25%
71.81%
50
but
exhibited
slight
drop
due
overfitting.
Remarkably,
strong
positive
correlation
AlexNet's
observed,
unlike
in
CNN.
research
also
highlighted
potential
generalize
classification
accuracy
datasets
beyond
domain,
caution
implement
early
stopping
mechanisms
prevent
findings
reinforces
role
deep
learning
remotely
sensed
data
agriculture.
Grain
yield
prediction
affects
policy
making
in
various
aspects
such
as
agricultural
production
planning,
food
security
assurance,
and
adjustment
of
foreign
trade.
Accurately
predicting
grain
is
great
significance
ensuring
global
security.
This
paper
based
on
the
MODIS
remote
sensing
image
data
products
from
2010
to
2020,
adds
band
information
vegetation
index
temperature
form
composite
a
set.
Aiming
at
lack
models
for
large-scale
forecasting
need
human
intervention
traditional
models,
this
proposes
estimation
model
deep
learning.
First,
cropping
mapping
techniques
are
used
process
generate
training
samples.
Then
channel
spatial
attention
mechanism
(Convolutional
Block
Attention
Module,
CBAM)
added
extracting
different
bands
improve
efficiency
model.
Long
Short-Term
Memory
(LSTM)
neural
networks
also
obtain
feature
time
dimension.
Finally,
national-scale
constructed.
The
proposed
was
tested
2018
2020
showing
an
average
R2
0.940
RMSE
80,020
tons,
indicating
that
it
can
predict
Chinese
better.
extracts
directly
data,
solves
problem
small-scale
research
imprecise
end-to-end
manner.