Unable to run programs of SFM (Structure From Motion) module
I am getting an error when I am trying to execute a sample code in SFM module. Initially SFM was not present in my contrib directory. So i downloaded the latest contrib and pasted the sfm folder in my...
View ArticleModifying inpainting to achieve proper blur
I am trying to do some image processing for which I need to remove the facial features like eyes, nose, lips etc. I have the following contour points  class along with the...
View ArticleWhats does ORB descriptor represent?
When using ORB to compute key points and descriptors, descriptors are represented as arrays of length 32, for example: [118 35 199 228 23 66 194 64 233 137 187 74 75 120 85 130 248 229 93 241 13 227...
View ArticleDifferent result after using HoughCircle?
I have a video x. Case 1: Get a frame from the above video. Change frame (color image) to gray image. Then using medianblur. Call HoughCircle and I receive list of circles. Have 3 circles. Case 2: i...
View ArticleStreaming a webcam at 60 fps
hi everybody i have a roblem with capturing a webcam (logitech c922) video stream. the webcam provides a stream at 60fps at a resolution of 720p. right now i initialize a capture confert it from...
View ArticleWhere is the lib file **mixed_sample.so** ?
I'm trying to compile the tutorial-2-mixedprocess application in android, this application comes with the sdk. But my application crashes when it tries to load **mixed_sample** // Load native library...
View Articleobject of class VideoCapture cannot be constructed
It is put in a sub thread not main thread. I am not sure if capture was constructed, capture.isOpened() return true, but get totally 1 frame. ...
View ArticleLUCID does not work
I am extracting keypoints using StarDetector. I am trying to compute descriptors using LUCID but I am getting the following error. Can anyone please explain why I am getting this error?> OpenCV...
View ArticleOpenCV Import Error After macOS/Homebrew Update (Reason: image not found)
I am still a beginner in programming and have a poor troubleshooting skill in Python packages. Currently, I have been approach an issue in loading OpenCV packages within Python 3.6. The error log is...
View ArticleOptimized sliding window approach
Hi! I have been searching around for a bit for an optimized version of the sliding window approach based on OpenCV, but I have not yet found one. What I am looking for is some version of the approach...
View ArticleOpenCV on Mac and Raspberry Pi performance comparison
Hi, guys. What I am working on is to use OpenCV + Raspberry Pi 3 Model B + Raspberry Cam V2 + Gstreamer to capture video frames, process them and save them into a video file. My goal is to capture the...
View ArticleOpenCV how the frame is grabbed out from WebCam?
I am wondering in a single frame grab cap >> frame If I am using Logitech C920 which has its own hardware encoder, and I am grabbing 720p image, Am I getting 1280 * 720 * 3=921600 * 3=2700000...
View ArticleLibSVM -> OpenCV SVM model conversion
Hi! I have trained some SVM classifier models for an object recognition by the use of LibSVM. I trained them using LibSVM even though I planned to use them with OpenCV because I thought that since...
View ArticleTraining and Test images must be of equal size
I'm trying to do face recognition for my project similar to this. But I need to detect it in a video. So I'm taking a video ([Friends](https://www.youtube.com/watch?v=t0BFOi5o0YY) Video) and take some...
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