How to recognise multiple faces and create DBMS for the same?
Hello, My project is to detect and recognize face using opencv python on raspberry pi. for this I am using openCV 2.4.10, python 2.7.9 version , raspberry pi-3, model-B.I want to detect as well as...
View ArticleHow to compute the translation and rotation in stitching(opencv module)?
In the opencv module (stitch_detail.cpp): warper->warp(img, K, cameras[img_idx].R, INTER_LINEAR, BORDER_REFLECT, img_warped); **Img_warped** is the output image, **img** is the input image. With...
View ArticleGet skeleton from distance transform
Hello, I know it is possible to get the skeleton of a shape in an image from either successive morphological operations or distanceTransform. I can do this via morphological operations. But How do I...
View Article[Opencv2.4.13]Two cameras hot plug, can't open the second camera
1. working environment:Opencv2.4.13, VS2008, Camera(A and B) 2. my question is: Connect A ----> Connect B: A,B both can be opened;Connect B ----> Connect A: B can be opened,but A can't. 3....
View ArticleUnable to Read Tiff Images
Hello, here I am adding my basic code. I want to give the path of the Image like that, but I cannot read the TIFF images. I am using C++. Here is the code: #include "opencv2\imgproc\imgproc.hpp"...
View ArticleWhere do I find "EMD" method?
I'm using cv2 in python3.5, and all I need is to calculate EMD distance between two n*n matrix. But I have search the whole cv2: for i in dir(cv2): if re.match(r'.*emd|EMD.*',i): print(i) And get...
View ArticleIs it possible to run ROS Kinetic with OpenCV 2.4.X?
Hi everyone, I have ROS Kinetic on Ubuntu 16.04. As stated in the [documentation](http://wiki.ros.org/kinetic/Migration), it is supported by OpenCV 3.1, while all the previous ROS versions are...
View ArticleHow do I threshhold a range of pixels of an image using python?
I need to convert the image to binary and then convert a range of pixels to a particular color value. How do I go about this. Code if possible please. Thanks in advance.
View ArticleCapture frames becomes very slow when it's night
Hi everybody, I have a problem with my webcam, has every faith it makes night it becomes slower my code and the following: #include "opencv2/opencv.hpp" #include #include void main(void) {...
View Articleopencv_ffmpeg module crash (IP Camera)
I'm using IP webcam android app(It converts mobile camera into IP web camera). I'm running below code in Visual Studio 2015 with OpenCV 3.1. VideoCapture cap; Mat img;...
View Articlecv::merge execution time on CV_32S
Hello, I used following code snippet to merge a few single channel images into a multichannel Mat: vector images(numcomps); for (int i = 0; i < numcomps; i++) images[i] = cv::Mat(h, w, CV_32SC1,...
View ArticleUsing iterator with sparseMat value
I am trying to access elements in a sparseMat using value and the iterator.. The elements are of the type Vec5f, which has been declared. typedef Vec Vec5f; The iterator is declared with...
View Articlefingerprint alignment
anyone have code for fingerprint alignment, I read this paper and I don't know how to alignment fingerprint, please help me, it's very important with me. thanks advance. paper:...
View Articlewriting OpenCL parallel for using OpenCV
As far as I could understand form openCV source code, `cv::parallel_for_` can utilize multiple computational units in the CPU using OpenMP, TBB, WinRT Concurrency ... However, there is no OpenCL...
View ArticleHow does create video decoder unıt with java?
Video Decoder Unıt : A unıt for decoding the video into its frames will be implemented.
View Articledetect text in image and put an image on it
hello i'm beginner in opencv development i wanna get the emplacement of a text like "Helloworld" on a lot of images and get the position to put an image on every text on image without fault. this is...
View Articlegamma correction in opencv java
Hi, how to translate this not opencv java code to opencv java: for(int i=0; i
View ArticleNon programming qn - How to obtain camera field of view ?
I read up this equation on wikipedia https://en.wikipedia.org/wiki/Angle_of_view#Crop_factor i.e. a camera's angle of view can be found from the following equation angle of view = 2 arctan ( d / 2f )...
View ArticleHow to use the functions of convertTo, applyColorMap,imshow to get the result...
Here is the code in Matlab and the result picture I get using Matlab. For some purposes, I need to convert Matlab code into C++. I have done the conversion of data structure in c++, and then I need to...
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