Missing python binding, stitcher API
Stitcher high level API, using Python I want to use setExposureCompensator(), but it's missing the python binding :/...
View Articlecan't run HoughCircles on image
I am trying to count objects in an image. To do that this is the approach I am using; 1. Open an image file 2. Convert the image file to HSV 3. Extract S channel 4. Run Gaussian Filter 5. Otsu...
View ArticleLaser pointer ideas?
Good day, With the help of google and knowledgeable people on this forum I have managed to slap together a crude laser pointer detection script (Thank You). The code I used can be found...
View ArticleAttributeerror on the jetson nano, after opencv 4.1.1 build
Hi I followed this tutorial to build opencv 4.1 on my jetson nano: https://github.com/JetsonHacksNano/buildOpenCV. When I test with importing cv2 in python it works, but when I try and use...
View ArticleHelp geeting OpenCV to output a videostream using gstreamer.
List, I am having a problem running gstreamer pipeline from Python 3 via OpenCv. I do not know gstreamer very well although I am somewhat comfortable with opencv. My issues stem from my ignorance not...
View ArticleHow to determine the length of contours?
Hello, I'm actually working on a webcam software with which I will control a UR co-bot to pick and place objects about forms and colors. I'm working with Python and OpenCV, I managed to recognize the...
View ArticlePython-openCV: Extracting (x,y) coordinates of point features on an image
Hi all, I am trying to extract the (x,y) coordinates of the the four corners of a wooden rectangular plank image and apply that to a real-time video feed. What I have in mind is: 1) read image and...
View ArticleWhat does the history of this function “createBackgroundSubtractorMOG2” means?
I only see this description in this [link](https://docs.opencv.org/master/de/de1/group__video__motion.html#ga2beb2dee7a073809ccec60f145b6b29c), it hasn't a very detailed explanation, so I'd like to...
View ArticleWhy are the coordinates of each crack not steady
I am trying to get the coordinates to keep still but when measure the x distance from the reference point (0,0) to the centroid of the crack (or contour) it would decrease as it is moving from left to...
View Articlehow to get duration/length video.webm video file ..
hey , this is murugan . i am not getting video duration/length for my .webm file. its gives negative number pls help me: video = cv2.VideoCapture("TEST000008.webm") duration =...
View Articlewhat does this warning mean? warning : field of class type without a DLL...
- visual studio 2019 - cmake latest version - opencv zip from master branch today (7/10/20) - python 3.7 - cuda 10.2/cudnn - windows 64bit win10 I built with no errors in cmake, then I opened the...
View Articlecv2 imshow displaying black images sometimes
I am trying out cv2 on ubuntu 20.04, python 3.7. I have run the following script: import cv2 img = cv2.imread('butterfly.jpg') cv2.imshow('ImageWindow', img) cv2.waitKey() Sometimes I would get the...
View Articlesmooth edges in binary images
 I tried with guassian blur, erode/dilate concept but not suitable for the type of image shown in sample.
View Articlesamples.findfile for loading photos
Hello, I've downloaded openCV for python and am using it on Microsoft Visual Studio and am trying to use the tutorials. Often, they fetch a picture, src2 =...
View Articleimport cv2 error on windows: missing configuration files
OpenCV = from master branch 7/10/20 Operating System / Platform => Windows 64 Bit Win10 Compiler => Visual Studio 2019 **problem:** I successfully built opencv in the latest cmake, and then built...
View ArticleChange a particular color in an Image Python
Hi there, I have an image and I would like to change a particular colour on that. Particularly, the image contains a set of colours I have used a means algorithm in order to obtain the whole set of...
View ArticleVideoCapture.read() freezing when reading from gstreamer
Hello, I've recently encountered an issue where the cv2.VideoCapture.read() function seems to freeze when reading a gstreamer pipeline. The stream seems to work in a glitchy manner for a few seconds,...
View ArticleDNN face detection in UWP/C++: strange output
Hello, I'm using OpenCV and Cafe to perform face detection on some images I receive from a stream. First, I tried with python: prototxt_file = 'deploy.prototxt' weights_file =...
View Articleshow video and texts on single window
Hi, I would like to show a video stream and sensors data to same window. But video should be displayed in Left half of the LCD and Sensors data should be displayed on right half of the LCD. I am using...
View ArticleWhat's the ETA for 4.4.0 python bindings?
I see that version 4.4.0 released today - awesome! Really excited to dig into it. Anyone have an idea on the ETA for the python bindings? > pip install opencv-contrib-python==4.4 shows that 4.3.0.36...
View Article