How to read the file and convert it to a binary image in Python

Question

I am new to Python, I want to read a image like jpg,png. and convert it to binary image. Here is my work:

from PIL import Image
import numpy



def main( ):
    name= 'b.jpg'

    img= Image.open (name);
    for pixel in iter(img.getdata()):
        print(pixel)

    img.convert("1").show();

    del image;

if __name__=='__main__':
    main()

Please be more specific, do you want the image in a base64 string? — DirtyBit
– DirtyBit, Commented Feb 20, 2019 at 10:56
After I converted, I will count connected components with using levialdi’s shrinkink algorithm — bufferoverflow
– bufferoverflow, Commented Feb 20, 2019 at 11:11

Davide Fiocco · Accepted Answer · 2020-12-03 22:11:21Z

4

This could be your solution:

# Read Image 
img= Image.open(file_path)  
# Convert Image to Numpy as array 
img = np.array(img)  
# Put threshold to make it binary
binarr = np.where(img>128, 255, 0)
# Covert numpy array back to image 
binimg = Image.fromarray(binarr)

edited Dec 3, 2020 at 22:11

Davide Fiocco

6,0395 gold badges42 silver badges79 bronze badges

answered Feb 20, 2019 at 11:45

JAbr

3223 silver badges13 bronze badges

Sign up to request clarification or add additional context in comments.

Collectives™ on Stack Overflow

How to read the file and convert it to a binary image in Python

1 Answer 1

Comments

Linked

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Linked

Related