minor refactor for readability, add credits + README

contrib/exif-binner/README.md

@@ -0,0 +1,26 @@
+# exif_binner.py 
+
+Bins multispectral drone images by spectral band, using EXIF data. Also verifies that each bin is complete (i.e. contains all expected bands) and can log errors to a CSV file. Excludes RGB images by default.
+
+## Requirements
+
+- [Pillow](https://pillow.readthedocs.io/en/stable/installation.html) library for reading images and EXIF data.
+- [tqdm](https://github.com/tqdm/tqdm#installation) for progress bars - can be removed
+
+## Usage
+
+```
+exif_binner.py <args> <path to folder of images to rename> <output folder>
+```
+
+Optional arguments:
+
+- `-b`/`--bands <integer>`: Number of expected bands per capture. Default: `5`
+- `-s`/`--sequential <True/False>`: Use sequential capture group in filenames rather than original capture ID. Default: `True`
+- `-z`/`--zero_pad <integer>`: If using sequential capture groups, zero-pad the group number to this many digits. 0 for no padding, -1 for auto padding. Default: `5`
+- `-w`/`--whitespace_replace <string>`: Replace whitespace characters with this character. Default: `-`
+- `-l`/`--logfile <filename>`: Write processed image metadata to this CSV file
+- `-r`/`--replace_filename <string>`: Use this instead of using the original filename in new filenames.
+- `-f`/`--force`: Do not ask for processing confirmation.
+- `-g`/`--no_grouping`: Do not apply grouping, only validate and add band name.
+- Show these on the command line with `-h`/`--help`.

contrib/exif-binner/exif_binner.py

@@ -1,23 +1,25 @@
 #!/usr/bin/env python3
 
+# Originally developed by Ming Chia at the Australian Plant Phenomics Facility (Australian National University node)
+
+# Usage:
+# exif_binner.py <args> <path to folder of images to rename> <output folder>
+
 # standard libraries
 import sys
 import os
-
-
-import PIL
-from PIL import Image, ExifTags
 import shutil
-from tqdm import tqdm
 import re
 import csv
-
 import math
 import argparse
-parser = argparse.ArgumentParser()
 
-# Usage:
+# other imports
-# python exif_binner.py <args> <path to folder of images to rename> <output folder>
+import PIL
+from PIL import Image, ExifTags
+from tqdm import tqdm # optional: see "swap with this for no tqdm" below
+
+parser = argparse.ArgumentParser()
 
 # required args
 parser.add_argument("file_dir", help="input folder of images")
@@ -77,9 +79,8 @@ images = []
 
 print("Indexing images ...")
 
-# Uses tqdm() for the progress bar, if not needed swap with
-# for filename in os.listdir(file_dir):
 
+# for filename in os.listdir(file_dir): # swap with this for no tqdm
 for filename in tqdm(os.listdir(file_dir)):
     old_path = os.path.join(file_dir, filename)
     file_name, file_ext = os.path.splitext(filename)
@@ -143,6 +144,7 @@ images = sorted(images, key=lambda img: (img["DateTime"], img["name"]))
 
 # now sort and identify valid entries
 if not args.no_grouping:
+    # for this_img in images: # swap with this for no tqdm
     for this_img in tqdm(images):
         if not this_img["valid"]:  # prefiltered in last loop
             continue
@@ -166,6 +168,7 @@ os.makedirs(output_invalid, exist_ok=True)
 identifier = ""
 
 # then do the actual copy
+# for this_img in images: # swap with this for no tqdm
 for this_img in tqdm(images):
     old_path = os.path.join(file_dir, this_img["name"])
     file_name, file_ext = os.path.splitext(this_img["name"])