opencv-python_connect_to_android_camera_via_rstp

opencv_rstp.py

import cv2
import numpy as np
from matplotlib import pyplot as plt
import os

"""
source: https://medium.com/@nhancv/opencv-python-connect-to-android-camera-via-rstp-9eb78e2903d5
NB: Did not work on windows 10
"""
os.environ["OPENCV_FFMPEG_CAPTURE_OPTIONS"] = "rtsp_transport;0"

url_stream = "rtsp://freja.hiof.no:1935/rtplive/definst/hessdalen03.stream"
# url_stream = "http://192.168.1.18:4747/video"
# vcap = cv2.VideoCapture("rtsp://192.168.80.28:5554/camera", cv2.CAP_FFMPEG)
vcap = cv2.VideoCapture(url_stream, cv2.CAP_FFMPEG)

while(1):
    ret, frame = vcap.read()
    if ret == False:
        print("Frame is empty")
        break;
    else:
        gray = cv2.cvtColor(frame, cv2.COLOR_BGR2GRAY)


        # remove noise
        img = cv2.GaussianBlur(gray,(3,3),0)

        # convolute with proper kernels
        laplacian = cv2.Laplacian(img,cv2.CV_64F)
        sobelx = cv2.Sobel(img,cv2.CV_64F,1,0,ksize=5)  # x
        sobely = cv2.Sobel(img,cv2.CV_64F,0,1,ksize=5)  # y

        """
        plt.subplot(2,2,1),plt.imshow(img,cmap = 'gray')
        plt.title('Original'), plt.xticks([]), plt.yticks([])
        plt.subplot(2,2,2),plt.imshow(laplacian,cmap = 'gray')
        plt.title('Laplacian'), plt.xticks([]), plt.yticks([])
        plt.subplot(2,2,3),plt.imshow(sobelx,cmap = 'gray')
        plt.title('Sobel X'), plt.xticks([]), plt.yticks([])
        plt.subplot(2,2,4),plt.imshow(sobely,cmap = 'gray')
        plt.title('Sobel Y'), plt.xticks([]), plt.yticks([])
        plt.show()
        """

        cv2.imshow('sobelx', sobelx)
        cv2.imshow('VIDEO', frame)
        cv2.waitKey(1)