Opencv 3.0 FAST Corner Detection
I am beginner in OpenCV. I have problem implement FAST algoritmus in Vsual Studio with version OpenCV 3.0. I have tried following implementation in c++: src = imread("../images/right.jpg",...
View ArticleOpenCV 2.4.11 Windows VS Linux
It seams OpenCV with CUDA have better performance on Linux than Windows. I have compared on the same computer the performance of a GTX980 with Windows 10 and ubuntu 15.04. Perf result on Linux are...
View Articlenamespace cv::ml not found - xcode - C++
Hi guys. I'm using XCode IDE in my project and I'm trying to create a machine learning program using the ml lib. However, I'm getting an error when I try to use the namespace cv::ml. My includes are:...
View ArticleI need to code HOF?
hi I would have to implement HOF ، But I do not know for how is the code overlapping Blocks?
View ArticleTraccking object: roi = frame[r:r+h, c:c+w] TypeError: 'NoneType' object has...
im working with opencv 3 and python 2.7: My code is import numpy as np import cv2 cap = cv2.VideoCapture('slow.flv') ret,frame = cap.read() r,h,c,w = 250,90,400,125 # simply hardcoded the values...
View Articlecv::resize() incorrect interpolation with INTER_NEAREST
I am trying to 'enlarge' pixels - i.e. apply resize() to increase the dimensions of an image with nearest neighbour interpolation. However I am not getting expected results. Input image (2 x 2...
View ArticleHow to resize an extremely large image
Hi, I'm using Python 3.4.3 and OpenCV 3.0.0. While I'm trying to resize a very large RGB image (107162,79553,3) using the following code: import cv2 image = cv2.resize(image, None, fx=0.5, fy=0.5,...
View ArticleHow to pass a ArrayList for a jni C ++ function?
I am doing a project in Java with Android jni C ++. I have a function in C ++ with the following parameters: **C ++ function:** void rectify (vector & corners, Mat & img) {...} In **JAVA**,...
View ArticleinitUndistortRectifyMap assert error
Hi, I'm trying to rewrite the stereo calibrate example in Java. I think I did things okayish but I got an error I don't understand how it can happen : OpenCV Error: Assertion failed (K.size() ==...
View Articleopencl embedded
hi guys I am trying to run opencv3.0 on embedded board, (freescal ,i.mx6) but ,the board only suppord opencl 1.1 EP。 when i run test example, I got this message: /usr/lib/libOpenCL.so: undefined...
View ArticleHow to make a good long video (capture) with VideoWriter ?
Hello, I want to capture my software window by using OpenCV. I found the VideoWriter class and use it to make video with screenshots taken each X msec. My software use Qt so I take a QPixmap each...
View ArticleThin plate spline correspondences
Hi all I am trying to use the ThinPlateSplineShapeTransformer and I am not sure how to use the method estimateTransformation. I create the two keypoint vectors with the correspongin points (using my...
View ArticleAdding Noise to Image - Opencv
Hi everyone! I'm trying to to add noise to an Image & then Denoise it to test my DeNoising algorithm! So for benchmark i'm referring this [Online Test samples][1]. I'm trying to replicate the...
View ArticleHow to train ObjectnessBING on my own data
Hello everyone, I am very excited about the ObjectnessBING algorithm. I have a data set with many roundly shaped objects. I expect the ObjectnessBING algorithm to perform better if the weight model is...
View Articleeye movement analysis
I'm planning on making an application to detect pre dementia from analysis of eye movements . I want to do this with capturing eye movements from a wearable glass for example . I was wondering if...
View ArticleHow to compute the statistical moment using opencv
I want compute the statistical moment using the opencv. There is a function that allow to compute the statistical moment ? Thanks
View ArticleIntegrate javacv camera view in swing GUI containers
hi I am working on java swing plus javaCV application. I want to integrate camera view on swing container or Jform but I don't know which containers is used for this. I am using follow code for camera...
View ArticleOpenCV 3 not working
Hi guys, I've been struggling trying to get OpenCV 3 to work on my system (Ubuntu 14). Everything compiles just fine, but almost anything actually works. The GPU-based algorithms fail to run on my...
View ArticleText contrib module and Tesseract
Good afternoon to everyone. First of all, sorry for my english hehe. I've been trying to build the opencv contrib module 'text', however I haven't got sucess. Note: Other modules like xfeatures2d have...
View ArticleHow to convert tiff to png?
Is there anyone who has tried tiff to png conversion using Opencv? Please provide some guidance. The tiff file compression level is CCITT T.6 (Facsimile-compatible CCITT Group 4).
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