Opencv for pcb parts detection and angle calculation
Hi, I’m new in Opencv . I want to detect pcb parts (Es. capactors, resistors etc.) with opencv and calculate current rotation angle. There is an easy and optimized way to do this ?
View ArticleHow can I check if the monitor is connected in Windows / Linux?
How can I check if the monitor is connected in Windows / Linux? The following program behavior is required, when I run my application: - if monitor is connected, then results will be showed in the...
View ArticleOpencv based annotation is open
I am trying to use open_CV annotation.exe -- annotations = pos.text -- images=positive/ It run and bring Press C to accept a selection Press d to delete the latest selection Press n to proceed with...
View Articleinstalling 3.4.12 for ubuntu 18.04 LTS (install from source) for yolov4
Hi, i have decided to change to opencv 3.4.12 , the latest version for the 3.4.x series. Now, i understand that the command git clone https://github.com/opencv/opencv.git can be used to install the...
View ArticleHSV white color range in JS
I would like to track white color using webcam and Opencv.js. [Here](https://stackoverflow.com/questions/22588146/tracking-white-color-using-python-opencv) is the question/answer with python. I want to...
View Articledeletion of useless posts
according to [previous discussion](https://github.com/opencv-infrastructure/answers.opencv.org/issues/45) some questions already deleted and there are [many question like tagged...
View ArticleLineSegmentDetector
I need to show lines, but I have error this code: QImage temp = nPixDst->pixmap().toImage(); Mat image = QImage2Mat( temp ) ; cvtColor(image, image, COLOR_BGR2GRAY); Canny(image, image, 50, 150,...
View ArticleProblem with undistortPoints() function in pose estimation of image
I have written about my task [here](https://answers.opencv.org/question/238792/problem-with-building-pose-mat-from-rotation-and-translation-matrices/). I have a set of images with known pose which...
View ArticleHow to get bird view image which is synthized four side images?(get AVM:...
Hi I'm making avm(around view monitoring) image by getting four side images from four fisheye cameras. This process has three parts: 1. calibrate fisheye image/video/streaming 2. get top view(bird...
View ArticleVideocapture RTSP cause very high cpu usage
i using OpenCV 3.4.12 VideoCapture in c++ with a simple read operation from a rtsp stream. A test with a 640x360 resolution runs with very high CPU usage 40-64% on my linux box with an i7 CPU. how can...
View ArticleRemoving translation from double camera facing the same direction
Hi all, I have a project for Android with which I take an image from the main camera as well as the "depth camera". The only problem is that the actual sensors are placed few centimeters away from...
View ArticlefindCirclesGrid can't find sub-pattern with hollow insides
I'm trying to find a unique 2x2 hollow center sub-pattern inside a circle grid pattern. Using "detect", generates keypoints that indicate that the hollow circles are detected correctly, but the 2x2...
View ArticleHow to find surfance orientation (relative to camera) from single depth image?
Supposing I have access to the image stream of a depth camera, and there is a flat surface (e.g. floor, tabletop, etc) within the camera's FoV at all times, how could one estimate the floor vertical...
View ArticleIs there any way to figur out area of an object as distortions occurred, can...
Opencv object measurement Existing has length and breadth. Proposed should have atleast area measured for bodies.
View Articlerecover pose scale
Is there a way to get a relative scale for the translation vector given from cv2.recoverpose(). e.g over 11 frames i get 10 different translation vectors, s(i) * t(i), 0 <= i < 9. Is there a way...
View Articlebinary calibration pattern with XY recoverable features
Hi all I think I've seen this before, but it is also possible that such a thing does not exist and that I'm mistaken. I'm looking for a calibration pattern which looks like low resolution binary noise....
View ArticleOpencv and OAK on Mac with new chip M1
I was wondering if opencv works (or will work) on the new MacBook Pros (2020)? These new laptops have their own apple chips (not intel based). I am also curious if the OAK( Opencv AI Kit) coming on...
View ArticleLot of Delay with my RTSP cam with OpenCV on Python
Good evening everyone. I have some concerns regarding a project that I am setting up. Indeed, when I display a simple Rtsp video stream via OpenCv, I have no problems. Everything is fluid. However I am...
View ArticleI want to implement Face ID unlock feature in my android app? Is there any...
I want to implement a Face ID unlock feature in my android app? Is there any way to do the same by using the OpenCV library? Although I can use BiometricPrompt Api to complete my work,there is an...
View ArticleReduce the opencv framework size by using size optimization
Hi, I am working on building a opencv.framework with a small size for our iOS application According to https://github.com/opencv/opencv/wiki/Compact-build-advice, using the size optimization could...
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