Init

.vscode/settings.json

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+{
+    "python.pythonPath": "/bin/python"
+}

main.py

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+import cv2
+import numpy as np
+cap = cv2.VideoCapture("rtsp://192.168.1.81/vaddio-conferenceshot-eptz-stream")
+max_count = 0
+
+# Text
+font = cv2.FONT_HERSHEY_SIMPLEX
+org = (50, 50)
+org2 = (50, 90)
+fontScale = 1
+color = (255, 0, 0)
+thickness = 2
+
+while True:
+    ret, src = cap.read()
+    upper_left = (int(src.shape[1]/4),int(src.shape[0]/4))
+    lower_right = (int(src.shape[1]/4 + src.shape[1]/2),int(src.shape[0]/4 + src.shape[0]/2) )
+
+    gray = cv2.cvtColor(src[upper_left[1]:lower_right[1],upper_left[0]:lower_right[0]], cv2.COLOR_BGR2GRAY)
+    sobel = cv2.Sobel(gray, cv2.CV_8U, 1, 0, ksize=3)
+    t, thresh = cv2.threshold(sobel, 200, 255, cv2.THRESH_BINARY)
+    count = np.sum(sobel)
+    if count > max_count:
+        max_count = count
+
+    src = cv2.putText(src, 'Max: {}'.format(max_count), org, font, fontScale,
+                      color, thickness, cv2.LINE_AA)
+    src = cv2.putText(src, 'Current: {}'.format(count), org2, font, fontScale,
+                      color, thickness, cv2.LINE_AA)
+    src = cv2.rectangle(src, pt1=upper_left, pt2=lower_right, color=(36,255,12), thickness=1)
+    cv2.imshow('tresh', thresh)
+    cv2.imshow('src', src)
+    cv2.imshow('sobel', sobel)
+    
+    k = cv2.waitKey(10)
+    if k == 27:
+        break