Which depth-sensor camera supports OpenNI?
Are there any depth-sensor cameras beside kinect that supports OpenNI? I am using Ubuntu 14.04 lts.
View ArticleHow to implement FaceRecognizer with opencv java interface (both 2.4.11 and...
I meet some issues with face recognizer in opencv 3.0 java interface, I am using opencv java interface (not javacv), I have implemented face detection, I want to add face recognizer and looking for...
View ArticleAssertion in Stitching_detailed.cpp Timelapse range_width
Hi, I try sampleopencv\samples\cpp\stitching_detailed.cpp with tow or three images. Whe I run program I have got an exception: > OpenCV Error: Assertion failed> (timelapse) in main, file>...
View ArticleClassifying OpenCV Mat objects with Caffe
Once I have trained my Caffe model (and have the pretrained.caffemodel file), how do I integrate this into a C++ program to make predictions? I'm using OpenCV to extract grayscale images (Mat datatype)...
View ArticleError when lunching the runnable jar file
Hi, I'm trying to export an application that uses openCV 3 library and works completely fine on eclipse. I've done all these native library things. But, when I try to execute the exported file I get...
View ArticleOpenCV with gcc and CMake: Cannot find source file
Hello I installed OpenCV in Fedora 22 using [this tutorial](http://docs.opencv.org/3.0-last-rst/doc/tutorials/introduction/linux_install/linux_install.html). Now I'm following...
View ArticleDetect text of newspaper headlines
Hello, I'm very new to OpenCV. I'm trying to detect text regions containing headlines of a newspaper. I have read about OpenCV features for text detection:...
View Articlefind tilt and pan with opencv
hi every one i write a cod and get the image moment and now i want to get pan and tilt of contour with this moment how to do it? please tell me how to calculate pan and tilt angle of contour? just c++...
View ArticleFisherfaces improve classification?
I'm using Fisherfaces for face classification of race and gender and I cannot get it better then about 80%. Wondering if anyone has any tips on improving it. Note I'm also trying various matlab...
View Articlecv::TriangulatePoints drifting for points from same pose
Hi, I am encountering a strange issue with the triangulation function of openCV. For my two-view pose estimation tests, I was doing this: Case 1: A single camera taking pictures of a scene from two...
View ArticleHow to perform mean variance normalization on face image
Hi all, How can i perform mean variance normalization on a given face image in order to reduce illumination effects in opencv. Your answers or links will be duly appreciated. Regards.
View ArticleStrange issue with stereo triangulation: TWO valid solutions
I am currently using OpenCV for a pose estimation related work, in which I am triangulating points between pairs for reconstruction and scale factor estimation. I have encountered a strange issue...
View Articlehow to manage memory consumption in Features2D + Homography
I used this [link text](http://docs.opencv.org/doc/tutorials/features2d/feature_homography/feature_homography.html) but when SurfFeatureDetector detector( minHessian ); SurfDescriptorExtractor...
View ArticleFail to build FaceRecognizer JNI package
I use the guide in this link http://stackoverflow.com/questions/22948553/issue-with-writing-facerecognizer-for-java-with-opencv-2-4-8, I use opencv2.4.11. When I run the makefile, it reports the error...
View Articlecross-correlation of 2 same sized images
Is there a way to compute full cross-correlation (or phase correlation) for two images of same size? -resulting image should be same size as 2 source images. Convolution will only give me one pixel...
View ArticlePlease help me , to initialize opencv 3.0 to android studio...
I m new at opencv I really try so many ways but cant find the exact solution please help me,we need really guide to install opencv libraries to our projects...
View Articlespeed improvement cascade gpu
Hi, I just relate the improvement I got by chance, working with cascadeclassifier_gpu.cpp (v 2.4.10) I tried this file with a webcam video stream and one face picture in front of the cam. I was...
View ArticleImplement tan-triggs in Java/Scala
I'm trying to translate the [Tan Triggs algorithm](https://github.com/bytefish/opencv/blob/master/misc/tan_triggs.cpp) to Scala but I have some issues... As a disclaimer, let me just say I don't know...
View Articlehow to detect colors precisely ?
Hello, I want to detect the color from the tube, I am using In range function and HSV plan , its work fine for one by one tube,but as shown in figure, all tube has not exactly same color. ![image...
View Articlesome functions not available
I'd like to use fisherfaces but currently these funcs are not available; I did a clean cv2 v3.0 install and cmake like so:> cmake -DWITH_QT=ON -DWITH_OPENGL=ON> -DWITH_VTK=ON -DWITH_TBB=ON...
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