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| 2013-04-15 00:25:52 -0600 | commented question | calibration without chessboard single camera i got the object points messed up and that was the cause of the error. I m now able to calibrate but the rms error is a bit high around 3.73 any suggestions to increase the accuracy . |
| 2013-04-04 02:45:57 -0600 | commented question | calibration without chessboard single camera I just want the coordinates of another color dot with respect to my calibrated object points. the z value always remains zero so all i have is a plane. the plane may be inclined so that could be turned back into a straight plane with the calibration values i get. the program i wrote is just a modification of the default calibration program. but it just doesn't calibrate with my points. |
| 2013-04-03 05:43:34 -0600 | received badge | ● Editor (source) |
| 2013-04-03 05:42:19 -0600 | asked a question | calibration without chessboard single camera I have a set of points on a paper and i want to calibrate my camera using those points. I ve put colors on each point and have done a color thresholding and am currently having all the image points I ve also took object points respectively when i try to calibrate with calibrate camera function its giving me an error. \
OpenCV Error: Assertion failed (ni >= 0) in collectCalibrationData, file /home/mac/OpenCV-2.4.1/modules/calib3d/src/calibration.cpp, line 3172 terminate called after throwing an instance of 'cv::Exception' what(): /home/mac/OpenCV-2.4.1/modules/calib3d/src/calibration.cpp:3172: error: (-215) ni >= 0 in function collectCalibrationData is there any way to get past this? |