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Elphel
image-compression
Commits
c34f9bd7
Project 'Elphel/master' was moved to 'Elphel/image-compression'. Please update any links and bookmarks that may still have the old path.
Commit
c34f9bd7
authored
Jun 13, 2022
by
Bryce Hepner
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modified code so now it calculates total
parent
45e246f4
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18 additions
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-5
WorkingPyDemo.py
WorkingPyDemo.py
+18
-5
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WorkingPyDemo.py
View file @
c34f9bd7
...
...
@@ -191,7 +191,11 @@ def make_dictionary(tiff_image_path_list, num_bins=4, difference = True):
for
_
,
tiff_image_path
in
enumerate
(
tiff_image_path_list
):
# get the image_array, etc
image_array
,
diff
,
error
=
predict_pix
(
tiff_image_path
,
difference
)
# plt.hist(np.ravel(image_array), bins=30)
# plt.xlabel('Pixel Value')
# plt.ylabel('Frequency')
# plt.title('Histogram of Pixel Values')
# plt.show()
bins
=
[
21
,
32
,
48
]
# get the boundary
boundary
=
np
.
hstack
((
image_array
[
0
,:],
image_array
[
-
1
,:],
image_array
[
1
:
-
1
,
0
],
image_array
[
1
:
-
1
,
-
1
]))
...
...
@@ -234,6 +238,11 @@ def make_dictionary(tiff_image_path_list, num_bins=4, difference = True):
mask
=
diff
>
bins
[
-
1
]
for
j
in
error
[
mask
]
.
astype
(
int
):
list_of_all_vals
[
-
1
]
.
append
(
str
(
j
))
# plt.hist([int(i) for i in list_of_all_vals[2]], bins=30)
# plt.xlabel("Error")
# plt.ylabel("Frequency")
# plt.title("Histogram of Errors")
# plt.show()
for
item
in
list_of_all_vals
:
freq
=
dict
(
Counter
(
item
))
freq
=
sorted
(
freq
.
items
(),
key
=
lambda
x
:
x
[
1
],
reverse
=
True
)
...
...
@@ -490,10 +499,11 @@ def bytes_to_bitstring(input_bytearray):
scenes
=
file_extractor
(
folder_name
)
newnamesforlater
=
[]
images
=
image_extractor
(
scenes
)
# list_dic, bins = make_dictionary(images, 4, False)
file_size_ratios
=
[]
list_dic
,
bins
=
make_dictionary
(
images
,
4
,
False
)
file_sizes_new
=
[]
file_sizes_old
=
[]
# np.save("first_dic.npy", list_dic)
for
i
in
range
(
len
(
images
)
):
for
i
in
range
(
1
):
# image, new_error, diff = huffman(images[i], 4, False)
# encoded_string = encoder(new_error, list_dic, diff, bins)
# inletters = bitstring_to_bytes(encoded_string)
...
...
@@ -504,7 +514,10 @@ for i in range(len(images)):
newnamesforlater
.
append
(
newname
+
"_Compressed.txt"
)
# with open(newname + "_Compressed.txt", 'wb') as f:
# f.write(inletters)
file_size_ratios
.
append
((
os
.
path
.
getsize
(
newname
+
"_Compressed.txt"
))
/
os
.
path
.
getsize
(
images
[
i
]))
file_sizes_new
.
append
((
os
.
path
.
getsize
(
newname
+
"_Compressed.txt"
)))
file_sizes_old
.
append
((
os
.
path
.
getsize
(
images
[
i
])))
file_sizes_new
.
append
(
os
.
path
.
getsize
(
"first_dic.npy"
))
# print(np.sum(file_sizes_new)/np.sum(file_sizes_old))
# list_dic = np.load("first_dic.npy", allow_pickle="TRUE")
# for i,item in enumerate(newnamesforlater[0:10]):
...
...
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