Create mask to select the black area
I have a black area around my image and i want to create a mask using OpenCv C++ that select just this black area so that i can paint it later. how Can i do that with out affect the image it self. I...
View ArticleWhy do I get different Length and Area for identical objects
Hello, I would like to compare two objects' area and length. I just simply find the contours and use arcLength() and contourArea() functions but the results are way too different. Why would that be?...
View ArticleProblem using OpenCV 2.4.9 with Visual Studio 2015
I'm tring to use OpenCV 2.4.9 with Visual Studio 2015 following this tutorial: https://www.youtube.com/watch?v=SgKmkgveWSA The program compiles but when I try to run it I can't due to a system error...
View ArticleOpenCV + Python | Multiple object tracking
I'm working on a project and I really can't reach a solution. My goal is to track some circular objects of the same color (red) in a video. My current pipeline is: 1. Convert each frame from BGR to HSV...
View ArticleHow to get the multiple images as a loop
Hello, i want to read multiple images which are saved in my working folder using imread function. can i use for loop or while loop to do that. i m using opencv with python.
View ArticleProblem with OpenCV 3 - Image output too large
I try a very simple program which reads the image and outputs it. The problem I am having is that the resultant image outputted by the cv2.imshow() is very very large in size. I have tried...
View ArticleDetect flying hornets
Hi, With a camera, I want to film the Asian hornets (Vespa velutina) hovering in front of the hives. They expect the bees returning or leaving to catch and eat them. I do not want to track them but...
View ArticleRemoving the zero rows.
Is there any way by which we can remove the zero rows in any matrix in opencv 3.0.0?
View Articlecalculate the distance (pixel) between the two edges ( lines) ?
Good day! I have a question. I get the picture from the camera using OPENCV, and using functions Canny ROI and get the following result ( Picture ) . as much as possible , or whether it is possible to...
View ArticleInformative websites related to OpenCV
i think it will be useful if we add links of informative websites related to OpenCV here. Lets create a list together. **recently added to list:** http://rodrigob.github.io/...
View ArticleOpenCV: Masking Operation Does not Function Properly
I have an image which I want to crop, for this I am using masking operation with `copyTo()` function. Here is the code block that does the operation: // ROI by creating mask for the trapezoid Mat mask...
View ArticleThe Introduction And Intensification Of Internet Dating By Ashley Lekov
Why when there are hundreds even thousands of adult reside xxx sex show chat internet sites you need to decide on this one particular to be your preferred and preferred internet site. Chaturbate makes...
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Aprenda A Ganhar Dinheiro ComTrading Esportivo
Trader Esportivo Bom, há poucas pessoas no Brasil que conhecem esse mercado de trabalho. E de extrema importância que façamos cursos com profissionais que realmente tenham resultados, e aqui no Brasil...
View ArticleWhat does HuMoments tell me?
Hello, I would like to compare two objects whether they are similar. So I read a lot about moments and HuMoments, but things are still not clear. What do the seven Hu invariants say about the object?...
View ArticleWhy does recoverPose return a non-zero position when identical point vectors...
By accident I tried estimating the relative position of an image to itself (don't ask). I would expect a result of 0 translation and 0 rotation. Surprisingly, I get a non-zero translation result. In...
View ArticlecreateERFilterNM1 - Parameter
I'm using the Scene Text Detection features of OpenCV and have some troubles finding the optimal parameters for createERFilterNM1. Here is what the...
View ArticleIs it possible to run a GPU HOG with a custom window size?
I have been trying to train and run a GPU accelerated HOG detector using SVMlight and a winow size of 48x48 pixels. I have gotten the HOG to work with the standard 49x96 window size for people, but...
View Articleopencv 3.0 for android can not download,but can download for linux
opencv 3.0 for android can not download,but can download for linux, why?
View ArticleTrying to run OpenCV as a 32bit exe file
So here is my story. I am creating a program for OCR with tesseract. I installed OpenCV C++ on a 32 bit window and created an exe file name Project4.exe with the following dll files:...
View Articledifferences between matlab vs opencv HOG features implementation
Hi, I'm trying to implement HOG feature calculation and observed both the matlab and opencv implementations. while matlab implementation sticks to navneet dalals paper, opencv differs from it in some...
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