Create Watermark on images post processing

kapalczynski — Fri, 13 Jan 2023 14:50:05 GMT

I am trying to follow this example that seems to show how to post process images in a Feature Class with a watermark.

https://github.com/Esri/field-maps-scripts/blob/master/notebooks/Generate%20PDF%20Report/Generate%20PDF%20Report.ipynb

As you can see from the code below I have commented out a bunch in the process_image function.

I am first off trying to get the Lat Long and Time from the image and simply print those out ...

I cannot figure out what the input_file parameter needs to be set to... As you can see I am trying to use the variable that was set earlier
I am not seeing where the script reads all the records and checks all the images that may exist on a single feature in the dataset.

Any help would be greatly appreciated.

import arcgis from arcgis.gis import GIS from PIL import Image, ImageOps, ImageDraw, ImageFont import base64 import io import json import datetime from PIL.ExifTags import GPSTAGS, TAGS agol_username = 'username' agol_password = 'xxxxxx' gis = GIS('https://xxxx.maps.arcgis.com', agol_username, agol_password) item = gis.content.get("eed50dc6xxxxxxxx876021a84eef") processing_layer = item.layers[0] def process_image(): #image = Image.open(input_file) image = Image.open(processing_layer ) image = ImageOps.exif_transpose(image) lat, long, gps_time = get_location_data(image.getexif()) print(lat) print(long) print(gps_time) #image_editable = ImageDraw.Draw(image) #font = ImageFont.truetype("/Library/Fonts/Arial Unicode.ttf", 24) #image_editable.text((1,1), f'{lat}, {long} at {gps_time.strftime("%Y-%m-%d %H:%M:%S")}', (255,255,0), font=font) #io_bytes = io.BytesIO() #image.save(io_bytes, format="JPEG") #io_bytes.seek(0) #return base64.b64encode(io_bytes.read()).decode() def get_location_data(exif_data): exif = { TAGS[k]: v for k, v in exif_data.items() if k in TAGS and type(v) is not bytes } lat = None long = None gps_time = None if "GPSInfo" in exif: gps_info = {} for key, val in GPSTAGS.items(): if key in exif["GPSInfo"]: gps_info[val] = exif["GPSInfo"][key] if "GPSLatitude" in gps_info: lat = get_decimal_from_dms(gps_info["GPSLatitude"], gps_info["GPSLatitudeRef"]) if "GPSLongitude" in gps_info: long = get_decimal_from_dms(gps_info["GPSLongitude"], gps_info["GPSLongitudeRef"]) if "GPSDateStamp" in gps_info and "GPSTimeStamp" in gps_info: gps_time = datetime.datetime.strptime(gps_info['GPSDateStamp'], '%Y:%m:%d').replace( hour=int(gps_info['GPSTimeStamp'][0]), minute=int(gps_info['GPSTimeStamp'][1]), second=int(gps_info['GPSTimeStamp'][2]) ) return (lat, long, gps_time) def get_decimal_from_dms(dms, ref): degrees = float(dms[0]) minutes = float(dms[1]) / 60.0 seconds = float(dms[2]) / 3600.0 decimal_degrees = round(degrees + minutes + seconds, 6) if ref in ['S', 'W']: decimal_degrees *= -1 return decimal_degrees if __name__ == '__main__': process_image()

Re: Create Watermark on images post processing

IanTodd — Fri, 13 Jan 2023 15:16:53 GMT

On first glance, it looks like you're trying to reference a layer, which PIL wouldn't know how to open. In the block "In [6]", you can see how it loops through the attachments downloads the image to a local directory. Once you have the JPEG locally, Image.open can read the data.

topic Re: Create Watermark on images post processing in ArcGIS Field Maps Questions

Create Watermark on images post processing

Re: Create Watermark on images post processing