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2014-12-09 13:47:08 -0600 | marked best answer | Installing cvblobslib on visual sutdio 2010^ Hi! can anybodytell how I can install or use cvbloblib on VS 2010 thanks in advance for your help |
2014-08-04 09:30:54 -0600 | received badge | ● Popular Question (source) |
2014-02-06 04:34:02 -0600 | marked best answer | how to use cv::setMouseCallback in a c++ class Hi ! I'm trying to use the cv::setMouseCallback to crop a frame. it just doesn't work can any body tell the whole program carshes when I use it: After @Vladislav suggestion I changed my code, it work now but I have a problem with cv::Rect theBox any idea |
2013-09-11 02:06:04 -0600 | answered a question | Get the color percentage I don't use Delphi! but to answer your question here's what you can do, split the color planes of your image and convert each of them to the a binary cv::Mat, and then you can run the function |
2013-09-10 06:11:08 -0600 | answered a question | opencv starting error You can't just put 219 code lines and expect people to read it for you ! I just debugged you program I the error is clear you capture device is wrong |
2013-09-09 04:49:03 -0600 | asked a question | findchessboardCorners result Hi! I have a chessboard where its height equal to its width, and I need to know how to change for example a recognized chessboard let's say a 3 rows to 3 columns, here a an example of a code a the result it may help you understanding my question : |
2013-08-29 07:19:36 -0600 | received badge | ● Critic (source) |
2013-08-27 01:48:37 -0600 | answered a question | VideoCapture open() won't open second camera Hi! having two video input devices doesn't mean automatically that their IDs are 0 and 1, did you try to access the second camera alone with the ID 1 ? I have two cameras and here what I've tried and it worked : |
2013-08-27 00:47:59 -0600 | answered a question | Can we use OpenCv in VS 2012 ? yes I did I'm using OpenCV2.3.6 with VS2012 |
2013-08-26 02:36:06 -0600 | answered a question | type and size of calibration pattern for most accurate results Hi! for the calibration I think the best thing is use the chessboard, because it's easier and faster to recognize then the circles, and try to use an asymmetric combination meaning a 7x8 or 13x10 etc ... to get the rotation information too. And after running the calibration you'll the calibration error the should as small as possible and it's the case if cover the whole size of your frame! |
2013-08-20 04:33:59 -0600 | answered a question | 2x3 Transformation Matrix the transformation matrix contain the relationship between the x' and y' in the image coordinate system and the real world coordinate system which is 3 dimensional ! |
2013-08-14 14:12:28 -0600 | answered a question | problem with reading image to Mat I'm using the same version of opencv and VS and I don't have a problem you shohould put your code to be sure that's not the reason of your Problem |
2013-08-13 05:41:24 -0600 | asked a question | Perspective change of vector Hi! say I have a source image than I transform to a dst image using getPerspectiveTransform and cv::warpPerspective. after that I have special vector of points in my source image, and I want to get or rather draw them in my dst image , I thought it'll obvious, but I don't this done , to better explain the problem I have a sample with a chessboard: this work fine so Now I've changed the perspective of my src frame. to transform my Points and theen put them in the dst I wrote this small function when try to draw the result vector in dst I don't get the points in their position ? here's my source image
and after the transformation, when draw result here' a what I get : I think the problem is that cv::warpPerspective is using in addition to the transformation matrix the size of the dst image, I tried to debugg the stuff but I really didn't understand what does it do with this size so I can add this to my function ! any suggestion ? |
2013-08-12 08:41:13 -0600 | answered a question | affine transform coordinate |
2013-08-12 05:35:07 -0600 | answered a question | Changing the perspective using Opencv I've asked the same question on stackoverflow and I got an answer for those who need it : http://stackoverflow.com/questions/18181012/changing-the-perspective-using-opencv |
2013-08-12 02:13:41 -0600 | asked a question | Changing the perspective using Opencv I'm working on a project, in which I use a chessboard, the problem that I'm facing, is when I recognize the board I want to crop the part of the frame that contains it and put it "straight", for that I'm using the cv::warpPerspective function, bellow is my code and the result that I get : (more) |
2013-07-30 06:45:11 -0600 | commented question | ArUco configuration in Visual Studion 2010 yes I got the wrong files so it's my fault |
2013-07-30 03:42:10 -0600 | commented question | ArUco configuration in Visual Studion 2010 @berak yes I tried to use cmake but I don't have the source files so I don't know can I do it , I downloaded :aruco_msvc10.zip from http://sourceforge.net/projects/aruco/files/1.2.4/ and I got .dll and .lib and .h files so I can only setup the project but I LNK2019 error |
2013-07-30 03:08:12 -0600 | asked a question | ArUco configuration in Visual Studion 2010 Hi! I have an opencv project, and I want to add some functionalty of ArUco to it, my problem is that I don't find any explanation about it configuration in VS2010, I was wondering if somebody know how to this ? thanks in advance for your help! |
2013-07-25 06:33:29 -0600 | commented answer | an Alternative for cvGet2D() thanks a lot for your help |
2013-07-25 05:52:54 -0600 | commented answer | an Alternative for cvGet2D() to be honest I don't get it ?? the type of tdst is 13 so how can get the values of p1 ?? |
2013-07-25 05:35:21 -0600 | commented answer | Runnig cv::warpPerspective on points I can get the back transformation with cv::warpPerspective, but how can't to that only for a set points ? |
2013-07-25 05:31:51 -0600 | asked a question | an Alternative for cvGet2D() Hi! I have a problem and I found i solution, but in c since I'm using c++ for my program , I changed the code but I can't change following part: CvPoint pDst; // cv::Point pdst; CvScalar p1; // cv::Scalar p1; p1=cvGet2D(&tdst,0,0); / / how can I change this ??? thanks in advance ? ? |
2013-07-25 05:19:51 -0600 | commented answer | Runnig cv::warpPerspective on points this means that what I'm trying to do isn't possible ? ??? |
2013-07-25 04:52:36 -0600 | commented answer | Runnig cv::warpPerspective on points I tried your suggestion, but the result is always 0 ?? have a look at the update |
2013-07-25 02:55:45 -0600 | asked a question | Runnig cv::warpPerspective on points Hi ! I'm running the cv::warpPerspective() function on a image and what to get the position of the some points of result image the I get in the source image, here how far I came : my problem is that if I select a point from dst how can get its coordinates in * src or src2 * since the cv::warpPerspective function doesn't take cv::Point as parameter ?? |
2013-07-24 03:54:27 -0600 | asked a question | Getting back to the original coordinates from a warped Image I have four corners extracted from a image, they are warped in to a second image: I want to go back to the original image from the result that I get in quad, these what I've tried: and it didn't work !! any idea ?? |
2013-07-15 05:12:33 -0600 | commented answer | how to find a part of a chessboard any idea Idea how to get their positions ?? |
2013-07-15 04:46:37 -0600 | commented answer | how to find a part of a chessboard so you mean if I want to use this function I can't get a part of the detected chessboard |
2013-07-15 04:13:59 -0600 | asked a question | how to find a part of a chessboard Hi ! I want to use the cv::findChessboard() function to calibrate my camera. let'S say I've a 4x5 chessboard how can I get information abot the corners if only a a part of my chessboard has been detected say 3x4 or 3x5 or 4x4 etc. thanks in advance for your help |