Python Forum

i want convert images to pixels

i do so

from PIL import Image
im = Image.open('image.jpg')

pixels = list(im.getdata())


result = []
counter = 0
for pixel in pixels:
counter += 1
result.append(['pixel'+ str(counter), pixel[1]])
return (result)
and get the result
['pixel1', 72], ['pixel2', 50], ['pixel3', 0], ['pixel4', 11], ['pixel5', 30], ['pixel6', 42], ['pixel7', 107], ['pixel8', 123]
here one picture

but there are many pictures, i want covert it all to pixels

the path
so i want take all picture from here
im = Image.open('C:\Users\Admin\Downloads\mypicture)

output in csv file?
each row it is one picture

Output:
  pixel1 pixel. pixel158 pixel159 pixel160 pixel161 pixel162 pixel163 pixel164 pixel165 pixel166 pixel167 pixel168 pixel169 pixel170 pixel171 pixel172
1      0      …        0      191      250      253       93        0        0        0        0        0        0        0        0        0        0
2      0      …       32        0        0        0        0        0        0        0        0        0        0        0        0        0        0
  pixel173 pixel174 pixel175 pixel176
1        0        0        0        0
2        0        0       16      179

how to do it correct?

Note, If you image is not a gray-scale one, each pixel will likely be presented as a triple (r, g, b), where r, g, b are integer values from 0 to 255 (or floats in [0,1]);
So, you would be needed to store that triple for every pixel.

Given a PIL-image img, you can convert it to the numpy array:

import numpy as np

img_converted = np.array(img)

# Now you can flatten you array
row =  img_converted.ravel()

# and convert to list
row_as_list = row.tolist()

Finally, I am not clear with underlying problem of this. What are you
trying to do? But I am sure, that you don't need to use pixel-wise loops in pure Python, they
are very slow.Typical workflow with images in Python assumes using scikit-image, numpy and scipy packages, which computationally expensive parts are implemented in C/Cython. This allows to perform image
manipulations reasonably faster in comparison with pure Python implementation of image processing algorithms.

scidam, hello, i decided do it in another way

from PIL import Image
import glob,os

paths = glob.glob(os.path.join(os.environ['userprofile'],'Downloads','mypicture','*.jpg'))
im = list(map(Image.open, paths))
for  obj in im:
    pixels = list(obj.getdata())

and i get pixels

so my question.
this path were pictures
('C:\Users\Admin\Downloads\mypicture), i want attache only two picture in forum

https://imgur.com/a/LiRdmvU
https://imgur.com/a/KWtqSdr

how these pixelsimport in csv ?
output

picname	   pix1	pix2 pix3
img_248.jpg	0	0	0
img_350.jpg	0	0	0

So, you have a matrix filled with either 0 or 1.
If I understood you correctly, you need to save it to a file.
You can do it using numpy:

import numpy as np
sample_matrix = np.random.randint(0, 2, size=(10,10)).tolist()
np.savetxt('output.csv', sample_matrix, delimiter=',')

Additinally, you can pass header keyword to .savetxt to set column names.