--- a
+++ b/utils/preprocessing/reduce_single_phase.py
@@ -0,0 +1,17 @@
+import numpy as np
+import os
+
+
+in_dir = "pp_train_128_ven"
+
+for i in os.listdir(in_dir):
+    if "img.npy" in i:
+        print (i)
+        arr = np.load(os.path.join(in_dir,i))
+
+        print ("shape now ",arr.shape)
+
+        arr = arr[:,:,:,0]
+
+        arr = np.save(os.path.join(in_dir,i),arr)
+print ("done")