topic Re: Resize Photos by 50% script erases key geotag metadata in Python Questions

Resize Photos by 50% script erases key geotag metadata

AFackler_NAPSG — Thu, 06 Jul 2023 14:36:56 GMT

I am working on a python script that will later be used as a tool in ArcGIS Pro that will take the photos from a drone, resize them by 50%, then run a geotag-to-point process. Right now, the script is set to copy all the photos into a new folder called "images_resized" as a way to indicate that these are the photos to be used and uploaded while the raw unchanged photos stay in the root folder. The issue I am running into is that when I run the resize part of the script, I end up losing the key location data I need for the script to run properly.

import os import arcpy from sys import argv from datetime import date from pathlib import Path from PIL import Image import shutil source_folder_path = r"C:\Users\admin\Desktop\UASPhotos" # Specify the destination folder path destination_folder_path = r"{}\images_resized".format(source_folder_path) # Create the destination folder if it doesn't exist if not os.path.exists(destination_folder_path): os.makedirs(destination_folder_path) # Get a list of all files in the source folder file_list = os.listdir(source_folder_path) # Loop through each file in the source folder for file_name in file_list: # Create the source and destination paths source_path = os.path.join(source_folder_path, file_name) destination_path = os.path.join(destination_folder_path, file_name) # Check if the file is an image (you can add more file extensions if needed) if file_name.lower().endswith((".jpg", ".jpeg", ".png", ".bmp", ".gif")): # Copy the file to the destination folder shutil.copyfile(source_path, destination_path) # Open the image file from the destination folder with Image.open(destination_path) as image: # Calculate the new width and height new_width = int(image.width * 0.5) new_height = int(image.height * 0.5) # Resize the image resized_image = image.resize((new_width, new_height))

I know it's during the resize because I tried just the copy and the photos still had the info, but as soon as I run the resizer the data is gone. Any ideas on how to preserve the essential metadata or any workaround?

Edit: I also found and tried out some EXIF scripts basically running the code below but still the same result(replace after line 16 in the script above with this)

for file_name in files: # Get the full path of the source file source_file = os.path.join(source_folder, file_name) # Check if the file is an image if not os.path.isfile(source_file) or not file_name.lower().endswith(('.jpg', '.jpeg', '.png')): continue # Open the image using PIL image = Image.open(source_file) # Resize the image width, height = image.size new_width = int(width * resize_percentage) new_height = int(height * resize_percentage) resized_image = image.resize((new_width, new_height), Image.ANTIALIAS) # Preserve the geotag information exif_data = image.info.get("exif") resized_image.info["exif"] = exif_data # Save the resized image to the destination folder destination_file = os.path.join(destination_folder, file_name) resized_image.save(destination_file) # Close the image image.close() resized_image.close()

Re: Resize Photos by 50% script erases key geotag metadata

AlfredBaldenweck — Thu, 06 Jul 2023 14:46:46 GMT

I think it's because you're just closing the image, not saving it.

Basically, on line 25, add in the exif tags in the second parameter.

(This is from code I muddled through two years ago, so it may take some more muddling on your end, but it does work for me just fine; I was able to plot each edited photo on a map no issue)

img = Image.open(output) img = ImageOps.exif_transpose(img) #exifdata= img.getexif() # Get general tags. #Save the output, including the exif tags where possible. try: img.save(output, exif= img.info['exif']) except: img.save(output)

Re: Resize Photos by 50% script erases key geotag metadata

AFackler_NAPSG — Thu, 06 Jul 2023 15:14:59 GMT

Would you be able to explain a bit more about which lines from your script to put where? I think I put it in wrong since my images came back corrupted (I think?)

Re: Resize Photos by 50% script erases key geotag metadata

AlfredBaldenweck — Thu, 06 Jul 2023 15:25:29 GMT

Yikes! Sorry

Try just replacing line 25 of your second script example with image.save(destination_file, exif_data)

To go over what I had posted:

first line establishes the image object, the second line flips it so it's facing up correctly, then lines 7-9 save the image with the exif info from the original image (if there is any), or else saves without it if there isn't any.

Re: Resize Photos by 50% script erases key geotag metadata

AFackler_NAPSG — Thu, 06 Jul 2023 15:46:12 GMT

Alright had to retrofit a bit by adding "exif_data=exif_data", otherwise it would fail. However, the XY data still isn't being preserved. See script below (also modified to work outside of a function, so there may be a few small differences from the original above)

for file_name in file_list: # Get the full path of the source file source_file = os.path.join(source_folder_path, file_name) # Check if the file is an image if not os.path.isfile(source_file) or not file_name.lower().endswith(('.jpg', '.jpeg', '.png')): continue # Open the image using PIL image = Image.open(source_file) # image = source_file.exif_transpose(image) # Resize the image width, height = image.size new_width = int(width * 0.5) new_height = int(height * 0.5) resized_image = image.resize((new_width, new_height)) # Preserve the geotag information exif_data = image.info.get("exif") resized_image.info["exif"] = exif_data # Save the resized image to the destination folder destination_file = os.path.join(destination_folder_path, file_name) resized_image.save(destination_file,exif_data=exif_data)

Re: Resize Photos by 50% script erases key geotag metadata

AlfredBaldenweck — Thu, 06 Jul 2023 16:44:34 GMT

I think the issue was on your line 20, you put "exif_data" as the parameter, instead of "exif". I changed that and it worked for me.

Full code I used below

from PIL import Image, ImageDraw, ImageFont, ImageOps from PIL.ExifTags import TAGS, GPSTAGS import os file_list = [r"Example_Photo 1.jpg"] source_folder_path = r"W:\Downloads\deletelater\ResizeTest" destination_folder_path = r"W:\Downloads\deletelater\ResizeTest\quaratine" for file_name in file_list: # Get the full path of the source file source_file = os.path.join(source_folder_path, file_name) # Check if the file is an image if not os.path.isfile(source_file) or not file_name.lower().endswith(('.jpg', '.jpeg', '.png')): continue # Open the image using PIL image = Image.open(source_file) # Resize the image width, height = image.size new_width = int(width * 0.5) new_height = int(height * 0.5) resized_image = image.resize((new_width, new_height)) # Preserve the geotag information exif_data = image.info["exif"] # Save the resized image to the destination folder file_nameR = file_name.split(".")[0] +"_Resized." + file_name.split(".")[1] destination_file = os.path.join(destination_folder_path, file_nameR) resized_image.save(destination_file,exif=exif_data) print("Done")

Re: Resize Photos by 50% script erases key geotag metadata

AFackler_NAPSG — Thu, 06 Jul 2023 16:56:38 GMT

Still no bueno, images coming back corrupted or not functional like my reply a few hours back. And XY data still isn't coming over when I look at the properties