CvSVM.get_default_grid() missing in Java?
Hi, I've noticed that in the Java documentation for version 2.4.2: http://docs.opencv.org/java/2.4.2/index.html?org/opencv/ml/CvSVM.html There exist a function to get the default parameter grid for...
View ArticledetectMultiscale fails when weights are requested
Hello, When weights and rejection levels are requested, detectMultiscale always returns a square at the center of the image, regardless of the image. Minimal working example: (the image I used is...
View ArticleOnly draw Rectangle when largest than the minimum size
May i know how to draw the rectangle at the object when the object is largest than the minimum size(left window picture), i already got to draw the rectangle when it was largest than the minimum...
View Articleis it possible to stitch two images using affine transformation ?
actually , i have two images captured by an UAV , so scale translation shear rotation is there . now i want to mosaic these images using affine transformation it is possible or not ? i m using opencv
View ArticleScene Text Detection and Recognition in iOS
Hi, I have seen this new feature for scene text detection. However I need to implement this in iOS for OCR Scanning. Any tutorial will be really great help.
View ArticleHow do I remove unwanted background edges for my ANPR project
Here is the binary image of the Canny filtered image. (Gaussian Blur 7x7)  I just need the License plate or any other text if present in the...
View ArticleTime complexity face recognition algorithms
Hi all, i hope that this is the right place where post this question, otherwise, if the post is inappropriate, please explain me why. For my thesis i'm facing the problem of face recognition in an...
View ArticleHow can I split these characters for character recognition?
I want to split the following characters for character recognition. How can I achieve my goal?  ...
View ArticlehoughCircles to detect pupil
Hello :D I'm trying to detect circles in detected eyes but houghCircles fail to detect any circles. This is my code http://pastebin.com/QnyJNaT3 What could be the problem? Please help me.
View ArticlePossible if only draw a Rectangle at the front object?
May i know is that possible if we draw a rectangle at the front object show as below picture? **This is the Real Situation**  **This is what the...
View Articleopencv error: the function/feature is not implemented
I am using opencv 3.1.0, visual studio 2013 and cuda 6.5 I wrote a simple code (got it from original tutorial) which includes gpu namespaces i changed them to cv::cuda since opencv 3.0 doesn't support...
View ArticleOpenCV 3 - BlobTrackerAuto equivalent?
In OpenCV, is there still available a set of functions or an object to track blobs from one frame to the next in a video file (or from a webcam stream)? I'm looking for something similar to...
View ArticleOpenCV - Is there a mailing list ??
Can somebody advise if there is still an OpenCV mailing list? This page: http://opencv.org/support.html Mentions a mailing list, links to https://groups.yahoo.com/neo/groups/OpenCV/info, and of course...
View ArticleDrawing a rect around points - java, opencv
I am developing a simple program that detects two corners in an image and then draws a rectangle around both the points. It detects the corners perfectly, but i am having trouble drawing around the...
View Articleusing a raspberry pi and opencv to control a servo motor
Hi everyone, I would like to use openCV with a raspberry pi to start a servo motor. The camera on the raspberry pi takes a picture of the person, the openCV scans it, verifies with pictures stored...
View ArticleHow could find apple at known picture, distance to it, width and volume.
I have 2 png pictures and 2 .yml files and another png with binocular vision. Please, help me in my question. Be very grateful. I work with opencv at ubuntu.
View ArticleCompilation error
Dears, I got latest OpenCV sources from github. I got error compiling it: Scanning dependencies of target opencv_videoio [ 37%] Building CXX object...
View ArticleAndroid Round Object Tracking with OpenCV
Hi all. I have been following a tutorial on tracking circular/elliptical objects with OpenCV 3.1.0 on Android and I need some help with code optimization and improving the recognition accuracy....
View ArticleComparing images with changes
I'm trying to compare two images that are basically the same with a. Some labels on the image moved to a different location b. One image has an extra icon that the other doesn't How do I compare the...
View ArticleHi. I'm using Euclidean distance to find the min distance between the...
BFMatcher matcher(NORM_L2); vector matches; matcher.match(descriptors_1, descriptors_2, matches); double max_dist = 0; double min_dist = 100; double sum_dist = 0; //-- Quick calculation of max and min...
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