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Nathaniel Callens
Image Compression
Commits
204424b1
Commit
204424b1
authored
Jan 13, 2022
by
Nathaniel Callens
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compress_start.py
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__pycache__
/.project
/.pydevproject
attic
*.log
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compress_start.py
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'''
Created on Jan 11, 2022
@author: nathanielc
python file located in the Image Compression project
folder under nathanielc user. This python file is for
exploring possible image compression techniques and is by
no means a final product. Goal is to learn how to download
images and extract important statistics from them.
'''
import
numpy
as
np
from
matplotlib
import
pyplot
as
plt
import
os
import
sys
from
PIL
import
Image
def
file_extractor
(
dirname
=
"/media/elphel/SSD3-4GB/lwir16-proc/captures/teasdale/scenes"
):
files
=
os
.
listdir
(
dirname
)
scenes
=
[]
for
file
in
files
:
scenes
.
append
(
os
.
path
.
join
(
dirname
,
file
))
return
scenes
def
image_extractor
(
scenes
):
image_folder
=
[]
for
scene
in
scenes
:
files
=
os
.
listdir
(
scene
)
for
file
in
files
:
image_folder
.
append
(
os
.
path
.
join
(
scene
,
file
))
images
=
[]
for
folder
in
image_folder
:
ims
=
os
.
listdir
(
folder
)
for
im
in
ims
:
if
im
[
-
4
:]
==
".jp4"
or
im
[
-
7
:]
==
"_6.tiff"
:
continue
else
:
images
.
append
(
os
.
path
.
join
(
folder
,
im
))
return
images
#returns a list of file paths to .tiff files in the specified directory given in file_extractor
if
__name__
==
'__main__'
:
scene_names
=
file_extractor
()
images
=
image_extractor
(
scene_names
)
im
=
Image
.
open
(
images
[
0
])
imarray
=
np
.
array
(
im
)
randos
=
np
.
random
.
randint
(
0
,
len
(
images
),
10
)
i
,
j
=
np
.
random
.
randint
(
0
,
imarray
.
shape
[
0
]),
np
.
random
.
randint
(
0
,
imarray
.
shape
[
1
])
image_array
=
[]
for
r
in
randos
:
image_array
.
append
(
np
.
array
(
Image
.
open
(
images
[
r
])))
indices
=
[
val
[
i
][
j
]
for
val
in
image_array
]
\ No newline at end of file
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