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MOTION DETECTION AND TRACKING USING OPENCV AND PYTHON

In this post, we are going to see how to detect and track movements(simply motion detection and tracking) using the OpenCV module. At first, you need to install the OpenCV-python module, to install the module just open your command prompt and type, pip install OpenCV-python Then hit enter, it will install the module automatically. After installing the module, just import the module and write the basic code to read the video. # import the opencv module import cv2 # capturing video capture = cv2.VideoCapture( "videos/input.mp4" ) After that, we have to get the two frames from the video or webcam and find the difference between the two frames, which is nothing but if there is a movement that occurs between the frames there might be a difference.  So, here we are trying to get the difference using the  cv2.absdiff() function in the OpenCV module and this method takes two parameters which are the two frames. # find difference between two frames diff = cv2.absdiff(img_1 , img_2) T...
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COLOR DETECTION USING OPENCV AND PYTHON

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In this post, we are going to see how the colors are detected by the OpenCV module.  The first step to get into this is just install the modules as I mentioned below and import the modules, then read the input image and convert the BGR (Blue, Green, Red) image to HSV (Hue, Saturation, Variance) image then find the lower and higher HSV value of the color which you want to detect from the HSV color map (Shown below),  Then, we have to generate the mask of the color which we chose. So, we will use the cv2.inRange() function to generate the mask. Just pass the input image, lower HSV value higher HSV Value. This will generate a masked image of the input image and assign the masked image to the variable (mask). To detect the color we have to use the cv2.bitwise_and() function and pass the input image as the first and second argument and the third argument will be the mask and store this in the variable (detected_image). detected_image will be the final output of our progra...
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DETECTING AND BLUR THE FACE USING OPENCV AND PYTHON

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    The following python code shows the conversion process of the detected face to blur using the OpenCV module. The method is used to convert blur is GaussianBlur(Source, ksize, sigmaX) . source: The image. ksize  : (kernel.width, kernel.height). kernel width and kernel height can differ but they must be positive and odd. Program :  import cv2 trainedDataset = cv2.CascadeClassifier( "haarcascade_frontalface_default.xml" ) img = cv2.imread( "images/Elon Musk.jpg" ) faces = trainedDataset.detectMultiScale(img) for x , y , w , h in faces: cv2.rectangle(img , (x , y , w , h) , ( 50 , 50 , 50 ) , 2 ) img[y:y + h , x:x + w] = cv2.GaussianBlur(img[y:y + h , x:x + w] , ( 93 , 93 ) , 0 ) cv2.imshow( "Image" , img) cv2.waitKey( 0 ) Output :  If you have any doubts in the code please refer face detection in image file using python .
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