2017-07-17 05:58:03 -0600 | commented question | Strange values for matrix camera and distortion values I updated the question, now I have modified the program to takes images instead video stream, also now I am using a flat pattern, and I change |
2017-07-16 17:56:35 -0600 | commented question | Strange values for matrix camera and distortion values I update the question with some of the pattern detected (I cut the image to show only the chessboard pattern) |
2017-07-15 03:51:55 -0600 | commented question | Strange values for matrix camera and distortion values For now i can't show image examples, but I update the question with the calibration result. I can say that the corner in the image are detected in the right place and the chessboard pattern appear in different position and also in different orientations in the input frames. |
2017-07-15 03:34:24 -0600 | received badge | ● Enthusiast |
2017-07-14 14:24:09 -0600 | asked a question | Strange values for matrix camera and distortion values I am trying to calibrate a fisheye camera. In order to do that I load a video take with that camera and takes frames where appears a cheesboard pattern. In order to find patterns I use: when I take 15 pattern I calibrate the camera as follow: In this case the error is: 1.6847, then I print the intrinsic matrix and distortion coeficients and I get I think this values are wrong because the image resolution is 2048x2048, si cx and cy should be 1024 but the calibration method returns 471 and 501 for that variables. then I try But I get a black image in imageUndistorted This is the undistorted image that I get after calibration
Edit: I modify my program to take images instead of video stream and now I am using a flat chessboard pattern. If I use the I get something similar to this . so, seems that |
2017-07-13 03:00:27 -0600 | asked a question | Error using fisheye callibration in python binding OpenCV 3.2.0 System information (version) When I try the following I get the next error I know that this error ocurrs a time ago: https://github.com/opencv/opencv/issu... but I think that it was fixed (https://github.com/opencv/opencv/pull...) in addition, when I try the workaround explained in https://github.com/opencv/opencv/issu... it doesn't work How can I run a fisheye calibration from python? (I don't want to use any extra oficial python wrapper) Thanks |
2017-07-12 02:40:37 -0600 | commented question | Calibrate 360 degree camera Ok, but the camera takes images (or videos) with 2 images (or 2 videos) in the same file (like this: https://icdn3.digitaltrends.com/image...). Do I need select a roi with only one image (or only one video)? |
2017-07-03 03:40:22 -0600 | commented question | Calibrate 360 degree camera With "360 degree camera" I refer to camera that take a picture with 2 cameras and it can record all space around it, like this: https://cdn.vox-cdn.com/thumbor/WDl-l... |
2017-07-03 03:37:54 -0600 | received badge | ● Editor (source) |
2017-07-03 03:21:33 -0600 | asked a question | Calibrate 360 degree camera Hello, I bought a 360 degree camera and I want to calibrate it. I know that video and images taken by 360 degree camera has metadata in the files taken. In this metadata it is stored the camera parameters, like the matrix camera? Thanks |