Issues with stereoRectify when camera orientations are very different
**Remark:** The coordinate system is right-handed, the cameras look into *y*-direction (rather then *z*). I got a set of fixed, calibrated cameras which I want to use to get a disparity map of the...
View ArticleCan OpenCV detect approaching object's speed?
Hi guys, My first question, please, bear with me. Before I start actual programming I would like to know if OpenCV is capable of detecting speed and distance of an **approaching** object (vehicle). I...
View ArticleCazare Leordina Maramures
Pensiune Cu Mancare Traditionala Maramures, prin asezarea lui geografica, intrece de conditii naturale deosebite pentru dezvoltarea turismului. Pe prejur cadrul neamestecat, judetul este detinatorul...
View ArticleWhat is the difference between OpenFace, OpenBR and OpenCV?
Currently I don't know which library I should use. I don't want any recommandations, I just want to know the differences, so I can decide for myself. The available libraries are: - OpenFace - OpenBR -...
View ArticleDoes OpenCV have a built in Edge Boxes implementation?
The Edge Boxes algorithm is detailed here: http://web.bii.a-star.edu.sg/~zhangxw/files/EdgeBoxes_ECCV2014.pdf I was wondering if this specific algorithm has any implementation in the library. At the...
View ArticleAdding nonfree module
Hello, I am having difficulties to build in nonfree module to my opencv. Is there any other way to do it not using cmake?
View Articleconfidence 0.000000
I'm sure i'm missing something silly here, but i just trained and saved a model, for male and female, label 1 and 2,and i'm getting the above as confidence (and not changing), and only displaying...
View Articlelibraries in opencv framework for iOS
I downloaded the opencv framework for iOS but am unable to find the libraries. It only contains header files. Do I have to build the libraries myself or I can download them from somewhere ?
View ArticleHow to encode a H264 video on Windows?
Hi, I am trying to encode a video using X264 encoder, but I keep getting "Could not find encoder for codec id 28: Encoder not found" error. I have tried CV_FOURCC('X', '2', '6', '4'), CV_FOURCC('H',...
View ArticleCan Microsoft visual c++ 6.0 work with all 0pencv versions or not ?
I have tried different versions of opencv with Microsoft visual c++ 6.0. Some simple projects can work ok with Opencv version like 2.x.x but some projects don't. I am installing Opencv by Using the...
View ArticleWhere can I find DEPTH_MASK_8U constant?
I am using OpenCV4Android version 3.1.0 and I can not use Core.DEPTH_MASK_8U. is there any alternative to this constant? how can I use it in OpenCV4Android version 3.1.0?
View Articlehow to detect the outer frame of an object
I am using OpenCV4Android version 3.1.0 and I want the Android camera to be able to detect a card e.g: credit-card, customer's card or etc. To implement such functionalitey using OpenCV i tried to do...
View ArticleAccess sub-image in opencv
Hi, I am new in opencv, i am using opencv 3.0, i am trying to access a sub-image,  As i know there is a 2 ways to do it, using **rect** or **range**...
View ArticleUse BackgroundSubtractorMOG2 in OpenCV 2.4.13 with Java
Hi, I have been running my openCV setup on windows until now, but now I need to change to Ubuntu. Because of this, I was unable to create a .jar file for openCV version 3.x so I ended up with version...
View ArticleOpenCV camera_calibration sample. No input found.
Hi, I'm trying to use the camera_calibration sample file of openCV. It compiles without errors, but for whatever reason the program is not working because the camera is not found. Input does not...
View ArticleBuffer to Mat
Hello guys, I need your help. I work with two cameras with a resolution of 4000x3000. Because of USB3 Vision I can only access with the manufacturer api on pictures. As return value I get a pointer...
View ArticleFace Recognition Sample Android
I am not able get any Android sample for Face Recognition (Not only detection) using OpenCV 3. Please provide me a link or sample, where I can find the Android sample for Face Recognition using OpenCV 3.
View ArticleOpencv with visual C++2010
#include #include int main(void){ char img_name1[]=""; char img_name2[]=""; printf("画像１をドロップしてください\n"); scanf("%s", img_name1); printf("画像2をドロップしてください\n"); scanf("%s", img_name2); // 画像の読み込み int x2 =...
View ArticleOpenCV4Android LockCanvas error
Hi. I've come across an error in the Opencv4android SDK which I can't quite explain. This bug only shows on my Google Tango tablet, but is non existent when I run my app on my Galaxy S6. 10-12...
View ArticleTrack bar OS X don't show numbers;
It doesn't show the numbers. It looks like this!  source code char TrackbarName[50]; /*sprintf( TrackbarName, "H_MIN", H_MIN); sprintf( TrackbarName,...
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