--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/histogram_equalization.py	Tue Jul 23 14:07:07 2019 -0400
@@ -0,0 +1,23 @@
+import argparse
+import os
+import sys
+import skimage.io
+import skimage.exposure
+import skimage.util
+
+hOptions = {
+    'default' : lambda img_raw: skimage.exposure.equalize_hist(img_raw),
+    'clahe' : lambda img_raw: skimage.exposure.equalize_adapthist(img_raw)
+}
+
+if __name__ == "__main__":
+    parser = argparse.ArgumentParser(description='Histogram equalization')
+    parser.add_argument('input_file', type=argparse.FileType('r'), default=sys.stdin, help='input file')
+    parser.add_argument('out_file', type=argparse.FileType('w'), default=sys.stdin, help='out file (TIFF)')
+    parser.add_argument('h_type', choices=hOptions.keys(), help='histogram equalization method')
+    args = parser.parse_args()
+
+    img_in = skimage.io.imread(args.input_file.name)
+    res = hOptions[args.h_type](img_in)
+    res = skimage.util.img_as_uint(res)
+    skimage.io.imsave(args.out_file.name, res, plugin="tifffile")