Cleaned up arg handling

src/helpers/template_extraction/script.py

@@ -3,19 +3,14 @@ import numpy as np
 import sys
 import os
 
-
+# command:
 # python template.py input_folder output_folder
-try:
-    input_folder = sys.argv[1]
-except:
-    print("Need an input folder")
-    exit()
 
-try:
+if(len(sys.argv) != 3):
+    print("Wrong amount of arguments")
+
+input_folder = sys.argv[1]
 output_folder = sys.argv[2]
-except:
-    print("Need an output folder")
-    exit()
 
 if(not os.path.isdir(input_folder)):
     print("Input folder not found")
@@ -27,28 +22,21 @@ if(not os.path.isdir(output_folder)):
 
 # Aruco params
 detector_params = cv2.aruco.DetectorParameters()
-dictionary = cv2.aruco.getPredefinedDictionary(
-    cv2.aruco.DICT_ARUCO_ORIGINAL)
+dictionary = cv2.aruco.getPredefinedDictionary(cv2.aruco.DICT_ARUCO_ORIGINAL)  
 detector = cv2.aruco.ArucoDetector(dictionary, detector_params)
 
-ids = np.zeros(10)
-corners = np.zeros(40)
-
 for file in os.listdir(input_folder):
     filename = input_folder + '/' + file
     out_filename = output_folder + '/' + file
-    img = cv2.imread(filename, 0) # open img
+    img = cv2.imread(filename, 0)  
     small_img = cv2.resize(img, (400, 400))
-
-    #corners, ids, rejected
     (corners, ids, rejected) = detector.detectMarkers(small_img)
- 
     new_image = cv2.aruco.drawDetectedMarkers(
         small_img, 
         corners, 
         ids)
     cv2.imshow('window', new_image)
-    # cv2.imwrite(out_filename, img) # save img
+    cv2.imwrite(out_filename, new_image) 
 
 cv2.waitKey(0)
 cv2.destroyAllWindows