Modifying Python Image Converter to apply changes to all files in directory

Asked
Active3 hr before
Viewed126 times

8 Answers

applychangesfilesdirectorypythonimage
90%

When we process images, we can access, examine, and / or change the color of any pixel we wish, To do this, we need some convention on how to access pixels individually; a way to give each one a name, or an address of a sort

Example_snippet/controller/utility/_apply.js/ """ * Python program to open,. . .
""
" *
Python program to open, display, and save an image.*
   ""
"
import skimage.io

# read image
image = skimage.io.imread(fname = "chair.jpg")
load more v
88%

If the image file isn’t in the current working directory, change the working directory to the folder that contains the image file by calling the os,chdir() function

Example_snippet/controller/utility/_apply.js/ ❶ >>> from PIL import ImageCol. . .
❶ >>> from PIL
import ImageColor❷ >>> ImageColor.getcolor('red', 'RGBA')
   (255, 0, 0, 255)❸ >>> ImageColor.getcolor('RED', 'RGBA')
   (255, 0, 0, 255) >>>
   ImageColor.getcolor('Black', 'RGBA')
   (0, 0, 0, 255) >>>
   ImageColor.getcolor('chocolate', 'RGBA')
   (210, 105, 30, 255) >>>
   ImageColor.getcolor('CornflowerBlue', 'RGBA')
   (100, 149, 237, 255)
load more v
72%

Using the save() method, PIL can save images in most image file formats, Here’s an example that takes all image files in a list of filenames (filelist) and converts the images to JPEG files:,where the sum is taken over all image coordinates x = [x, y]

Example_snippet/controller/utility/_apply.js/ from PIL import Image pil_im . . .
from PIL
import Image

pil_im = Image.open('empire.jpg')
Step 2 continued with pil_im = Image.open('empire.jp. . .
pil_im = Image.open('empire.jpg').convert('L')
Step 3 continued with from PIL import Image import o. . .
from PIL
import Image
import os

for infile in filelist:
   outfile = os.path.splitext(infile)[0] + ".jpg"
if infile != outfile:
   try:
   Image.open(infile).save(outfile)
except IOError:
   print "cannot convert", infile
Step 4 continued with import os def get_imlist(path. . .
import os

def get_imlist(path):
   ""
"  Returns a list of filenames for
all jpg images in a directory.
""
"

return [os.path.join(path, f) for f in os.listdir(path) if f.endswith('.jpg')]
Step 5 continued with pil_im.thumbnail((128,128)). . .
pil_im.thumbnail((128, 128))
Step 6 continued with box = (100,100,400,400) region. . .
box = (100, 100, 400, 400)
region = pil_im.crop(box)
Step 7 continued with region = region.transpose(Imag. . .
region = region.transpose(Image.ROTATE_180)
pil_im.paste(region, box)
Step 8 continued with out = pil_im.resize((128,128)). . .
out = pil_im.resize((128, 128))
Step 9 continued with out = pil_im.rotate(45). . .
out = pil_im.rotate(45)
load more v
65%

Now, we can save the image file in our folder,,Before we resize, you can print the current size of your image by the following code

Example_snippet/controller/utility/_apply.js/ pip install pillow. . .
pip install pillow
Step 2 continued with from PIL import Image, ImageEn. . .
from PIL
import Image, ImageEnhance
Step 3 continued with img = Image.open("testme.jpg"). . .
img = Image.open("testme.jpg")
load more v
75%

This program applies changes to a single ,vk4 image file and converts it to a

Example_snippet/controller/utility/_apply.js/ import numpy as np from PIL im. . .
import numpy as np
from PIL
import Image
import vk4extract

with open('copy.vk4', 'rb') as in_file:
   offsets = vk4extract.extract_offsets(in_file)
rgb_dict = vk4extract.extract_color_data(offsets, 'peak', in_file)

rgb_data = rgb_dict['data']
height = rgb_dict['height']
width = rgb_dict['width']

rgb_matrix = np.reshape(rgb_data, (height, width, 3))
image = Image.fromarray(rgb_matrix, 'RGB')
image.save('example_image.jpeg', 'JPEG')
load more v
40%

All examples will assume the required images are in the same directory as the python script file being run,,To complete the setup, install the packages listed in the requirements

Example_snippet/controller/utility/_changes.js/ python3 -m pip install --upgra. . .
python3 - m pip install--upgrade pip
python3 - m pip install--upgrade Pillow
load more v
22%

Example_snippet/controller/utility/_changes.js/ from PIL import Image import o. . .
from PIL
import Image
import os

directory = r 'D:\PATH'
c = 1
for filename in os.listdir(directory):
   if filename.endswith(".jpg"):
   im = Image.open(filename)
name = 'img' + str(c) + '.png'
rgb_im = im.convert('RGB')
rgb_im.save(name)
c += 1
print(os.path.join(directory, filename))
continue
else :
   continue
60%

Apply changes to all the images in given folder – Using Python PIL,We will be parsing all the images in the folder to apply changes/operations to all of them simultaneously,,Reading images in Python,Reading an image in OpenCV using Python

Example_snippet/controller/utility/_changes.js/ pip3 install pillow pip3 insta. . .
pip3 install pillow
pip3 install os - sys