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2018-05-17 12:55:52 -0600 | asked a question | Histogram backprojection on other spaces Histogram backprojection on other spaces I have been trying the histogram backprojection with the image convolved with s |
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2014-04-19 08:25:00 -0600 | asked a question | CirclesGrid Rotation If I build a platform that would detect different pattern markers using findCirclesGrid in a monochrome image, how would I know which rotation does every circle grid (marker) has? And if I detect that marker with multiple cameras and I do the 3D reconstruction, how would I know the marker's X rotation, Y rotation and Z rotation if I have the intrinsic and extrinsic parameters for each camera? |
2014-03-30 13:49:20 -0600 | asked a question | SimpleBlobDetector params is protected (solved) I tried with the WAY2 and works, nevermind folks (I forgot an instantiation, now seems to be fixed) If I'm using a class with functions to instanciate the SimpleBlobDetector params I get the error so that the params is protected. I tried 2 ways for the usage of SimpleBlobDetector but both fail. WAY 1 WAY 2 How can I use SimpleBlobDetector in an object-based way? (considering the params as an attribute) |
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2014-03-26 15:41:58 -0600 | asked a question | stereoCalibrate problem (solved) SOLUTION: adjust de flags parameter I'm dealing with two cameras and I played CalibrateCamera, it returned me correct distCoeffs, CameraMatrix, tvecs and rvecs values for each camera. The results seemed to be correct Then I realised that for dealing with 3D triangulation of points I would need stereoCalibrate instead, so I tried it and it doesn't work, it returns zero values for each Output parameter. I verified previously that ImagePoints for each camera were correct but see the results: Why? Because I see the stereoCalibrate returned 0 values for each Output parameter. How can I solve that? Should I use an alternative of using stereoCalibrate? PD: I'm using the default extra flags or criteria parameters. I'm using version 2.4.6 with mingw with the following documentation http://docs.opencv.org/2.4.6/modules/calib3d/doc/camera_calibration_and_3d_reconstruction.html#stereocalibrate |
2014-03-24 18:38:53 -0600 | asked a question | VideoCapture serial id As well is known, the VideoCapture recognises the device id as the cameras are connected. For example, if I have a webcam and two cameras, the devices would be 1,2 and 3 (maybe). But what I wanna know how to get unique identificators per camera. I mean, if I connect the cameras in another way in the future, the device id would be changed as 1,3 and 2. But I don't want that, I want the devices to have unique serial identificators for saving captured data and stuff from the concrete camera. So, how can I get the "serial id" or "unique id" for each camera? Thanks in advance |