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image_operations_library.py
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image_operations_library.py
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#!/Users/hannesbajohr/opt/anaconda3/bin/python
from PIL import Image, ImageOps
import sys
from os import listdir
import os
from os.path import isfile, join
import glob
import imageio
import urllib.request
def get_files (path):
files =[]
if path[-1] != "/":
sys.exit("End the path with a '/'.")
for f in listdir(path):
if isfile(path + f):
files.append(path + f)
try:
files.remove(path+".DS_Store")
except:
pass
return(files)
def cropper(path,left,top,right,bottom):
files=get_files(path)
for file_img in files:
img = Image.open(file_img)
area = (left, top, right, bottom)
cropped_img = img.crop(area)
cropped_img.save(path + "cropped/" + os.path.basename(os.path.normpath(file_img)), "JPEG", quality=100, subsampling=0)
def pad_img(path):
files=get_files(path)
for file_img in files:
if os.path.isfile(path + "padded_square/"+ os.path.basename(os.path.normpath(file_img))):
pass
else:
try:
img = Image.open(file_img)
width, height = img.size
if not os.path.exists(path+"padded_square"):
os.makedirs(path+"padded_square")
if width == height:
img.save(path + "padded_square/" + os.path.basename(os.path.normpath(file_img)), "JPEG", quality=100, subsampling=0)
elif width > height:
result = Image.new(img.mode, (width, width), 0)
result.paste(img, (0, (width - height) // 2))
result.save(path + "padded_square/" + os.path.basename(os.path.normpath(file_img)), "JPEG", quality=100, subsampling=0)
else:
result = Image.new(img.mode, (height, height), 0)
result.paste(img, ((height - width) // 2, 0))
result.save(path + "padded_square/" + os.path.basename(os.path.normpath(file_img)), "JPEG", quality=100, subsampling=0)
print("processed: " + os.path.basename(os.path.normpath(file_img)))
except:
print("Error with file " + file_img)
def fit_to_size(path, size):
files=get_files(path)
for file_img in files:
if os.path.isfile(path + "fit_to_size/"+ os.path.basename(os.path.normpath(file_img))):
print(os.path.basename(os.path.normpath(file_img)) + " exists already")
pass
else:
if not os.path.exists(path + "fit_to_size"):
os.makedirs(path + "fit_to_size")
try:
img = Image.open(file_img)
fit_and_resized_image = ImageOps.fit(img, (size, size), Image.ANTIALIAS) #oder: fit_and_resized_image = file_img.resize((size, size), Image.ANTIALIAS)
fit_and_resized_image.save(path + "fit_to_size/" + os.path.basename(os.path.normpath(file_img)), "JPEG", quality=100, subsampling=0)
except:
print("Error with: " + os.path.basename(os.path.normpath(file_img)))
def convert_to_rgb(path):
files=get_files(path)
for file_img in files:
img = Image.open(file_img)
rgbimg = Image.new("RGB", img.size)
rgbimg.paste(img)
rgbimg.save(path + "converted_to_rgb/" + os.path.basename(os.path.normpath(file_img)), "JPEG", quality=100, subsampling=0)
def convert_to_grayscale(path):
files=get_files(path)
for file_img in files:
img = Image.open(file_img).convert('LA')
if not os.path.exists(path+"converted_to_rgb/"):
os.makedirs(path+"converted_to_rgb")
img.save(path + "converted_to_grayscale/" + os.path.basename(os.path.normpath(file_img)), "PNG")
def slice_in_grid (path, no_width, no_height):
k=0
files=get_files(path)
for file_img in files:
print("Processing " + file_img)
img = Image.open(file_img)
imgwidth, imgheight = img.size
for i in range(0,imgheight,round(imgheight/no_height)):
for j in range(0,imgwidth,round(imgwidth/no_width)):
box = (j, i, j+(round(imgwidth/no_width)), i+(round(imgheight/no_height)))
a = img.crop(box)
if not os.path.exists(path+"sliced_in_grid"):
os.makedirs(path+"sliced_in_grid")
a.save(path + "sliced_in_grid/" + str(i) + "-" + str(j) + "-" + os.path.basename(os.path.normpath(file_img)) + ".jpg", "JPEG", quality=100, subsampling=0)
k +=1
def make_animation(path):
fp_in = path + "*.*"
fp_out = path + "OUTPUT.gif"
img, *imgs = [Image.open(f) for f in sorted(glob.glob(fp_in))]
img.save(fp=fp_out, format='GIF', append_images=imgs,save_all=True, duration=100, loop=0)
def remove_landscape(path):
files=get_files(path)
for file_img in files:
img = Image.open(file_img)
width, height = img.size
if width > height:
os.remove(file_img)
print("Removed " + file_img)
if width == height:
os.remove(file_img)
print("Removed " + file_img)
def compare_if_img_same(path):
files=get_files(path)
print("Comparing…")
try:
for i in range (0, len(files)):
im1 = Image.open(files[i])
im2 = Image.open(files[i+1])
if list(im1.getdata()) == list(im2.getdata()):
print("Identical: " + files[i] + " and " + files[i+1] + "\n")
except:
print("Error: " + files[i])
def convert_mp4_to_GIF(filename, output):
import ffmpy
ff = ffmpy.FFmpeg(
inputs = {filename : None},
outputs = {output + ".gif" : None})
ff.run
def download_images_from_ISBNs(ISBN_file, standard_image_URL, extension, local_download_path):
f=open(ISBN_file, 'r', encoding='utf-8-sig')
URL_list = f.readlines()
if not os.path.exists(local_download_path):
os.makedirs(local_download_path)
for ISBN in URL_list:
ISBN = ISBN[0:-1]
URL = standard_image_URL + ISBN + extension
print((URL) + ": "),
try:
if os.path.isfile(local_download_path + ISBN + extension):
print("already exists")
else:
with urllib.request.urlopen(URL) as response, open(local_download_path + os.path.basename(os.path.normpath(ISBN)) + ".jpg", "wb") as out_file:
out = response.read()
out_file.write(out)
#print("saved")
except:
print("no image")
print("no image total: " + str(x))
def list_img_too_wide(path):
files=get_files(path)
for file_img in files:
img = Image.open(file_img)
#print(file_img)
#print(img.getpixel((4,4)))
if img.getpixel((175,55)) == (255, 255, 255):
if not os.path.exists(path+"check"):
os.makedirs(path+"check")
os.rename(file_img, path + "check/" + (os.path.basename(os.path.normpath(file_img))))
def check_channel_no(path):
img_list = []
files=get_files(path)
for file_img in files:
image = imageio.imread(file_img)
if(len(image.shape)<3):
img_list.append(file_img)
#print(file_img)
img_list.append(file_img)
print("\n".join(img_list))
'''for files in img_list:
img = Image.open(files)
if not os.path.exists(path+"converted_to_rgb/"):
os.makedirs(path+"converted_to_rgb")
print(files)
print(os.path.basename(os.path.normpath(files)))
rgbimg = Image.new("RGB", img.size)
rgbimg.paste(img)
rgbimg.save(path + "converted_to_rgb/" + os.path.basename(os.path.normpath(file_img)), "JPEG", quality=100, subsampling=0)'''