I need a collection of sample images to train a Haar-based classifier for plate detection. I know this question has been asked already, but the source on googlecode is dead. http://tutorial-haartr...

I am trying to detect the mouth in an image with openCV, so I am using the following code: #include "face_detection.h" using namespace cv; // Function detectAndDisplay void detectAndDisplay(cons...

I have a problem with my cat being bullied by a nabouring cat to the extent that the cat enters our house in the summer and eat our cats food and sleeps in our furniture. My cat is gray and the pr...

I have tried to detect something from a tutorial. When training have finished, stage files and cascade file is created. I have knowledge about the algorithm but I don't know meaning of information ...

I am doing some image detection on Android with OpenCV. I noticed that the OpenCV camera is quite blurry if one tries to hold it up to a small object. Is there a way to zoom the camera and/or custo...

What are the recommended parameters for CascadeClassifier::detectMultiScale() and depending on which factors I should change default parameters? void CascadeClassifier::detectMultiScale( const Ma...

I am trying to develop a simple application to detect faces as well as eyes in a given image: from cv2 import * face_cascade = CascadeClassifier('haarcascade_frontalface_default.xml') eye_cascade ...

So following up from here, I now need to collect negative samples, for cascaded classification using OpenCV. With positive samples, I know that all samples should have the same aspect ratio. What ...

I'm trying to recognize two different objects using two different cascade classifiers. I modified the face recognition samples but I have a problem: when I try to recognize object from object1.xml ...