Initial (and hopefully last) commit

Buchstaben_extrahieren.py

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+import cv2
+import numpy as np
+import os
+
+#User parameters
+output_folder="letters"
+image = cv2.imread("Blockbuchstaben.jpeg")
+number_rows=13
+number_cols=8
+margin=15 #Rand der weggeschnitten wird bei den einzelnen Buchstaben
+
+gray = cv2.cvtColor(image, cv2.COLOR_BGR2GRAY)
+
+height, width, channels = image.shape
+print(height)
+print(width)
+
+letter_width=width//number_cols
+letter_height=height//number_rows
+
+print(letter_width)
+print(letter_height)
+
+if not os.path.exists(output_folder):
+        os.makedirs(output_folder)
+
+for i in range(0,number_rows):
+    for j in range(0,number_cols):
+        x=j*letter_width
+        y=i*letter_height
+        
+        letter_img=gray[y+margin:y+letter_height-margin,x+margin:x+letter_width-margin]
+        #if i==6 and j==8:
+        #    cv2.imshow('letter_img', letter_img)
+        cv2.imwrite(output_folder+'/letter'+str(i)+str(j)+'.png', letter_img)
+
+
+#cv2.imshow('BuchstabenRaster', gray)
+cv2.waitKey(0)
+cv2.destroyAllWindows()