How To Import External Library To OpenCV
I would like to extract features of images using opencv 3.0 with Visual Studio 2013. My code: #include #include #include "opencv2\core.hpp" #include "opencv2\features2d.hpp" #include #include using...
View ArticleOpenCV4Android - Reduce function?
So I know that C, C++ and Python have the reduce function: http://docs.opencv.org/modules/core/doc/operations_on_arrays.html#reduce But I can't seem to get it working on Android with OpenCV4Android....
View Articlefaces facs (facial action coding system)
Hi everybody, I'm searching the web for a long time and I hope anyone here can help me. I'm looking for a project that implemented recognition of face facs (facial action coding system). you can see...
View ArticleOpenCV 3.0.0 Libraries
References to installing 3.0.0 generally direct the user to add only two libraries (i.e., ts300 and world300) and further suggests 3.0.0 does not require all the libraries to be downloaded as required...
View Articleocr with OpenCV
Hi everyone, I'ld to know if it's possible to do OCR directly with screen datas as input using OpenCV ? (i.e without saving screenshots then doing OCR on it). Thank you Aymeric
View ArticleDetecting dent in pipelines
I am doing dent detection for underwater pipeline through image processing(python), a very basic one. As can be seen in the following image i am doing continuous evaluation of the pipe. This is the...
View ArticleBest color difference or distance approximation?
Currently, a standard way of comparing colors is using "Delta E" metric in CIELab [[Color-difference](https://en.wikipedia.org/wiki/Color_difference)] which is based on Euclidean distance in CIELab...
View ArticleEnable OpenCV-OpenCL on Android devices
I'm trying to figure out how to enable OpenCL on an Android device. I've built opencv so that OpenCL is YES. I've tried some functions like cv::ocl::setUseOpenCV(true) and haveOpenCL() and they all...
View ArticleMemory leak while using Mat
Hi all, I'm new to OpenCV and I'm using OpenCV 2.49 libraries in my application. The objective of my application is to run in background, take pictures using web cam and save it as a BMP image in HDD....
View ArticleCannot Import External Library
I kept track of the instructions in that [link](https://github.com/Itseez/opencv_contrib#how-to-build-opencv-with-extra-modules). I downloaded the repository. Then, I applied those commands: `cd...
View ArticleopenCV 3.0 recoverPose wrong results
Does anyone can using openCV 3.0 recoverPose function with good results? I've got: Mat r; cv::Mat t; cv::Mat E = cv::findEssentialMat(features1, features2); cv::recoverPose(E, features1, features1, r,...
View ArticleHow to check image planar or interleaved?
While writing function to convert image type I need to know its planar or interleaved. I read a lot in OpenCV doc, but I couldn't find. Can somebody give a snippet of code?
View ArticleContour properties
I have trying to get the major and minor axis of a contour by enclosing into a eclipse using fiteclipse(). But it is returning me a Rotating rect object. Can anyone help me with getting the major and...
View ArticleOpenCV 3.0 RGBD depth cleaner
Hello everyone, I am having some difficulties to use the function DepthCleaner () with method = DEPTH_CLEANER_NIL to clean a depth image. This function is released in OpenCV 3.0.0. So, it's too early...
View ArticleNormalizing images for opencv_traincascade
I have a set of satellite images with roofs in them. I am using opencv_traincascade to train a ViolaJones detector for roofs. Because I want to do tranformations (rotations, flips, etc) to the...
View Articleerror: #error core.hpp header must be compiled as C++
Hi all , i'm trying to build an example of face detection found here https://github.com/tasanakorn/rpi-mmal-demo/tree/develop to use it with raspberry pi camera module but when i do make i get the...
View ArticleInstallation of opencv 3.0 GOLD on raspberry pi 2 ERROR
Hi all, I've been looking all day for a good tutorial on installing opencv 3.0 , si i've foolow this link :...
View ArticleOpenCV 3.0 - T-API (transparant OpenCL acceleration) CPU-thread-safe ??
In OpenCV 3.0 (http://opencv.org/opencv-3-0.html), there is the so-called T-API introducted, where functions are accelerated, transparently for the user, on the GPU with OpenCL. I just wonder whether...
View ArticleFPS in openCV vs FPS in VLC and Quicktime Player
Hello, I am using openCV 2.4.11 for video analysing. I need a very precise framerate because I want to sync it with other data. When I use `double fps = m_capture.get(CV_CAP_PROP_FPS);` I get a...
View ArticleMIXTURE OF GAUSSIAN background subtraction
Hi I have done background subtraction from video using simple video frame difference. I want to do it using MIXTURE OF GAUSSIAN but I don't have much information about it . could you help me please
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