Initial commit

Divers/tutoriel25-3/genere_fond.py

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+import cv2
+import numpy as np
+import random
+import os
+import common
+
+video="videos/France_Motorway.mp4"
+
+if not os.path.isdir(common.dir_images_sans_panneaux):
+    os.mkdir(common.dir_images_sans_panneaux)
+
+if not os.path.exists(video):
+    print("Vidéo non présente:", video)
+    quit()
+    
+cap=cv2.VideoCapture(video)
+
+id=0
+nbr_image=100000
+
+nbr_image_par_frame=int(100000/cap.get(cv2.CAP_PROP_FRAME_COUNT))+1
+
+while True:
+    ret, frame=cap.read()
+    if ret is False:
+        quit()
+    h, w, c=frame.shape
+
+    for cpt in range(nbr_image_par_frame):
+        x=random.randint(0, w-common.size)
+        y=random.randint(0, h-common.size)
+        img=frame[y:y+common.size, x:x+common.size]        
+        cv2.imwrite(common.dir_images_sans_panneaux+"/{:d}.png".format(id), img)
+        id+=1
+        if id==nbr_image:
+            quit()
+    
+
+
+