Does createLBPHFaceRecognizer() uses spatially enhanced histogram?
Hello, I am asking about the createLBPHFaceRecognizer() function, how does it really works? in its parameter there are a number representing sampling point and a radius. As far as I know, the input...
View Articleface detection of animated face
Is it possible for opencv to execute face recognition of an animated face and not a face in a picture and just put in front of the camera ?
View ArticleWhere can we find the FFMPEG source for the cv wrapper?
In the OpenCV source ffmpeg folder there are only dll binaries, but these are for opencv versions of a wrapper. Where can we download the source to the cv_ffmpeg, as I'd like to add functionality?
View ArticleExplicitly set ffmpeg to open video
Is there a way to explicitly specify ffmpeg usage to open video with VideoCapture on any platform?
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View Articlehow to build opencv with another library.
i wanna build opencv with another library compiled '.a', and i prepaired related '.a' and '.h'. i tried edit cmake in linux. but, fail to build cause java issue. does have any tip or document?
View ArticleObject detector for unchanging object viewed from slightly different...
I have seen how effective SURF and SIFT can be at feature matching 2d images, but I was wondering if training a cascade filter on a single object would be better for detecting a single object at...
View ArticleManually call Haar features / LBP
Hi, Is it possible to manually call the haar feature / local binary pattern function at a specific scale once ? I know of detectMultiScale but it does the haar feature in a sliding window manner at...
View ArticleThat will Make Us Strong Whenever we Stumble?
The type that makes your sweat cooler than the usual. You shouldn't just take my personal word for it. The world needs you, and EVERYONE has some kind of expertise or personal experience they can share...
View ArticleDon't read my rectangle
I adapted this code to read the white rectangle with the word 23-1965 But, it does not detect it sees a lot of other side dishes, but not what interests me. Who tells me where I'm wrong? Also attach...
View Articlehandle float data in fastnlmeans
Hello All, Some of the openCV functions does not support float data type for example fastnlmeandenoising. How to handle the same please help ?
View ArticlesolvePnpRansac GPU assertion failed
I'm trying to use the gpu version of solvePnPRansac to estimate the pose of the camera, but I get the following error: OpenCV Error: Assertion failed (object.rows == 1 && object.cols > 0...
View ArticleGstreamer error when running VideoCapture
Hi, when I run the following program to play a video from a mp4 file using opencv(cv2), I get gstreamer errors. import numpy as np import cv2 cap = cv2.VideoCapture("play.mp4") while(True): # Capture...
View ArticleInformative websites related to OpenCV
i think it will be useful if we add links of informative websites related to OpenCV here. Lets create a list together. Last addition : http://hanzratech.in/categories/opencv/ [**check what added to...
View ArticleStereo calibrate, T Matrix.
I am running stereo calibrate on a dual camera setup. I get the T and R mats back, and I need to pass the baseline distance between the cameras into my stereo vision application. This should be the T...
View ArticleError compiling iOS app with openCV framework
With latest open cv framework i am unable to compile code on IOS device. i am facing following error.  same app is able to compile for simulator but...
View Articlehow to use centers generated by kmeans in svm training in opencv ?
I define initial centers and use some data, than perform kmeans. I also print new centers , they are different from my initial centers. Here, I added code of that. I want to use these centers in svm...
View ArticleCascadeClassifier::detectMultiScale alogical influence of minSize parameter
I work with OpenCV 2.4.9. When I downsize whole image with, lets say, `k=0.6` koefficient (both width and height reduced proportionally), I do the same with parameter...
View ArticleDetect cars in video
Hello, I´m new with OpenCV and I want detect cars in a webcam or a video file. This is my current solution: while (Camera.read(RawImage)) { Camera >> RawImage; BackgroundMask(RawImage, Mask);...
View ArticleEffective multiple object detection with a small data set
Hello, I want to detect objects according to images from a database **filled by the user**, with a maximum amount of 6 images(for 6 different angles). This amount is not enough for building a...
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