Python-for-data-science/Image_resize.py at main · adnanms699/Python-for-data-science · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
from PIL import Image


input_file = "vertical.png"       # replace with image filename
output_file = "verticalLogo.png"     # output filename
width_cm = 25                  # wanted width in cm
dpi = 300                      # wanted DPI

# cm to inches
width_inch = width_cm / 2.54

#opening the image
img = Image.open(input_file)

# maintain aspect ratio
pixel_width = int(width_inch * dpi)
w_percent = (pixel_width / float(img.width))
pixel_height = int((float(img.height) * float(w_percent)))

#resize
img_resized = img.resize((pixel_width, pixel_height), Image.LANCZOS)

# resize DPI
img_resized.save(output_file, dpi=(dpi, dpi))

print(f"Image saved as {output_file} at {dpi} DPI and {width_cm} cm width.")

from PIL import Image


input_file = "logoResized.png"       # replace with image filename
output_file = "horizontalLogo.png"     # output filename
width_cm = 25                  # wanted width in cm
dpi = 300                      # wanted DPI

# cm to inches
width_inch = width_cm / 2.54

#opening the image
img = Image.open(input_file)

# maintain aspect ratio
pixel_width = int(width_inch * dpi)
w_percent = (pixel_width / float(img.width))
pixel_height = int((float(img.height) * float(w_percent)))

#resize
img_resized = img.resize((pixel_width, pixel_height), Image.LANCZOS)

# resize DPI
img_resized.save(output_file, dpi=(dpi, dpi))

print(f"Image saved as {output_file} at {dpi} DPI and {width_cm} cm width.")

from PIL import Image

# Input / output files
input_file = "POSTER.jpeg"
output_file = "POSTER_ZC10.jpeg"

# Desired physical size and resolution
width_cm = 80
height_cm = 100
dpi = 300

# Convert cm → inches
width_inch = width_cm / 2.54
height_inch = height_cm / 2.54

# Convert inches → pixels
pixel_width = int(width_inch * dpi)    # 9450
pixel_height = int(height_inch * dpi)  # 11811

# Open image
img = Image.open(input_file)

# Resize directly to target pixel dimensions
img_resized = img.resize((pixel_width, pixel_height), Image.LANCZOS)

# Save with DPI metadata
img_resized.save(output_file, dpi=(dpi, dpi))

print(f"Image saved as {output_file} at {dpi} DPI, {width_cm} cm × {height_cm} cm.")