how to create 4 dims array using CvMatND.
Hi @dkurt, @berak how to create 4 dims array using CvMatND, I have to create an array for (1 x 64 x 64 x 3) matrix.
View Articleqt 5.7, opencv 3.1 and win 10
hi using MinGW and Cmake I built opencv (with Qt option) and now trying ro run sample program. Here is the code #include #include int main() { cv::Mat image=...
View ArticleTrying to convert 'BGR to Gray'
This is the input code: import cv2 img = cv2.imread('test.jpg') gray = cv2.cvtColor(img, cv2.COLOR_BGR2GRAY) And the error : error: OpenCV(3.4.2)...
View ArticleMask a room using OpenCV
Hi, I am trying to clone the results and technique of this website https://www.visualizecolor.com/voc#/PaintPhoto?projectid=5791b5a0-9567-4159-a7dd-25e54481a17a Using open cv in Python. So far i have...
View Articleto extract video and move into the newfolder
My task to extract the video of 1min before using after trigger here trigger is passing when->it contains datetimeformat(190425132148).I need to convert this format into minute and subtract...
View Articleopencv dnn yolo3-tiny can not get the same result as darknet yolo3-tiny
Hello everybody! first, I train my traindataset by original Darknet yolo3-tiny on ubuntu system. second, I test my valdataset by the pretrained model，it predicts very good result; But, WHEN I USE the...
View ArticlePose Estimation Tutorial not compiling
I am trying to follow this: [https://docs.opencv.org/3.4.4/dc/d2c/tutorial_real_time_pose.html](https://docs.opencv.org/3.4.4/dc/d2c/tutorial_real_time_pose.html) I create a directory "build" in >...
View ArticleAny mobile robot tracking and controlling example?
Do you know any working simple tracking and controlling a mobile robot examples source?
View Articlespectrum component after DFT
> Hello! Help me please. I dont know how> are distributed components of spectum> in array Mat[]. > Example, Mat[10][10]: 10683.0 , 0.0 | -1672.7109375 , 1224.880615234375 |...
View Articlei was making motion detection for detecting alphabets using opencv mnp...
i copied this code from github but its working fine for him but in my case cemera suddenly stops when i remove blue objects from frame File...
View ArticleVisual Studio 2019 & OpenCV 4.1
I currently am using Visual Studio 15 and want to update (so that I can use 4.1), but I don't know whether to go to 2017 or 2019... Does OpenCV work yet with VS19 or should I stick with 2017? Thanks!
View Article3D Camera Pose Estimation
I've been trapped in the question for a few days. I just can't get it how it work actually. I've calibrated the camera and I've known the intrinsic and extrinsic parameters. And what should I do next...
View ArticleOpenCV is not detecting rectangle(paper) In some Devices like moto,oppo devices
I have integrated latest version of opencv(4.1.0) for rectangle(Paper) detection but it is unable to detect rectangle(paper) in some devices like moto,oppo devices. also it is only detecting rectangle...
View ArticleOverlay one video feed on another video feed.
I want to place a video on a corner of another video feed. My code is based on...
View Articlerecord mouse pixel position inside video
So I want to continuously record the pixel position of the mouse inside a video so that I can track an object in the video with the mouse and replace that object with another image. How do I do this in...
View ArticleHow to make the track bar move in steps e.g. step 1 = 25.5 and step 10= 255
Hello all, I am currently finding a solution to my problem very hard to come by what I want to do is create a trackbar with 10 settings corresponding to 0-255 and use this trackbar to carry out image...
View ArticleNot able to create cv::MatIterator_ in visual studio 2015.
I am working on a simple example using visual studio 2015 with opencv 4.1.0. i am not able to set value for iterator from cv::Mat sample code is shown below. >cv::Mat inputImg = cv::imread(argv[1]);...
View ArticleHow to read videos from three cameras in the same time?
Hello, I tried to getting videos from three cameras in the same time, but I have the following error, do you have any idea how to read videos from three cameras in python with opencv? It's possible?...
View ArticleHow to detect circular erosion/dilation
Hi, I would like to detect circular erosions and dilations on a line. For dilations, I tried to recursively erode the image and on every recursion, I check width/height aspect ratio. If the ratio is...
View ArticleOpenCV Transform Shape with Arbitrary Contour into Rectangle
I want to perform book dewarping, the source image is like that:  When I...
View Article