How to clear frames from buffer with USB webcam?
Hi everyone, I'm new to Python and OpenCV, using versions 3.4 and 3.0 respectively. I'm trying to use two USB webcams to grab 2 sets of frames each and then retrieve the frames. In this code the first...
View ArticleModulo cv2 has no attribute cv
Hello, I installed opencv-python using the answer given by @user3731622 in the following post: https://stackoverflow.com/questions/20953273/install-opencv-for-python-3-3 I can import cv2 but when I...
View ArticleExplanation for the cv2.HoughCircles function parameters
Hello, I searched a lot but I couldn't find the documentation of this function(in **Python**). So could someone explain the meaning of the parameters we pass to this function or give a link to the...
View Articlecan anyone gives me real time shape detection code C++,open cv 3.0 ?
i want to detect traingular, square , round shapes using web cam
View Articlegetting error: (-215) npoints >= 0 && npoints ==...
This is the part of my code.When I run it runs perfectly for sometime and throws the above error. I tried to manage this by using flag to remove this but it gives error after sometime rather than...
View ArticleReal-time video stitching from initial stitching computation
I have two fixed identical synchronized camera streams at 90 degrees of each other. I would like to stitch in real-time those two streams into a single stream. After getting the first frames on each...
View ArticleOpenCV print descriptor value
I'm writing a C++ program that should store in a MySQL DB the image descriptors value. I'm using ORB and as far as I know, I should have an 128 bit long value. When I run the following code for (int p...
View ArticleVideo artifacts (noise?) - how to reduce effect on foreground detection
I'm using MOG2 background subtraction with the default settings and what I'm assuming is noise in the video feed gets registered as foreground. I've eliminated much of the effects of this using a...
View ArticleIn the Shi-Tomasi method, is it possible to get the area where the frequency...
I am trying to find the area in image where there are maximum corners detected. Is there any possible way to do this?
View ArticleC++ cv::eigen and matlab eig() return different results
Hello, i am trying to implement an ellipse fitting algorithm according to the following paper: [Link Paper](http://autotrace.sourceforge.net/WSCG98.pdf) I went trough every matrix step by step. I could...
View ArticleHow to develop using open CV in Android
Hello, I've installed open CV on Eclipse to develop android apps, but I don't know how to getting started with. I searched on Google to find some tutorials but I didn't found anything. What I want to...
View ArticleHaar classifier
Hello, I works on weak classifier and i try to understand the implementation on OpenCV: > template inline int predictOrdered( CascadeClassifierImpl& cascade, Ptr&_featureEvaluator,...
View ArticleWhy does recognizer predict always return 1?
My code is as follows #load all requirments import numpy as np import cv2 import os face_cascade = cv2.CascadeClassifier(r'C:\Users\Bharat...
View ArticleTracking two hands with OpenCV
Hi! I need to track two hands that are constantly changing in shape from videos. I have done the basic thresholding. I tried k-means to partition the thresholded pixels into two clusters, and then did...
View ArticleGet descriptor values in Android
I'm working on an app that uses ORB in order to detect some buildings. The values of the descriptor returned by the following code written in C++ are stored in a MySql database(my DB communicates with...
View Articlesomeone know where to get machine learning and computer vision source files...
someone know where to get machine learning and computer vision source files for self driving car which are free/open source ? I found some on the web from the DARPA challenge but it was only for...
View ArticleOpencv tracking object moving on live video and remove
I want remove object moving on stream live ,, with output without the object moving . CvCapture *vCaptureFromFile("rtmp://192.168.1.11/live/input"); CvCapture...
View ArticleVS 2015 X64 CMAKE Library BLAS/LAPACK missing
8/13/2016 downloaded everything and tried to CMAKE but error'ed out on BLAS and LAPACK libraries not being found. I can't find where to get them and the direction to setup for windows is missing where...
View ArticleStitch images by Translation
I am currently using OpenCV stitcher class to stitch two images acquired by a camera translated parallel to a wall. The distance between the wall and the camera is around 75 cm with a limited field of...
View ArticleSpecular Highlights detection
Hi guys, I am interested to find a way to detect and remove the specularities from a given indoors image. For example give the following image: you can see that there is the main specular spot in the...
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