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# pose estimation

• ## Rotation Estimation between two imagesFebruary 15

I want to get the rotation between two images taken from the same camera (known intrinsic). I have a nearly perfect pure rotation! I use findhomography but if there is a little translation movement I get four results. Is there a way to force the homo

• ## Aruco marker detection in opencv, computing absolute board translation invariant to camera roll, pitch and yawFebruary 14

I am trying to get the absolute distance from my camera to the board origin that is invariant to camera roll, pitch and yaw. Theoretically it should work if I carry out an inverse rotation using the rotation matrix deduced from rvecs onto the transla

• ## Essential Matrix 5 point alg (Nistér) opencv 3.0January 29

from my understanding in opencv3.0 is the NistÃ©r 5 point alg realized. See the link. But if I enter 5 points for the essential matrix I get a matrix 3x18. With 6 points I get the expected 3x3? Does anyone know why? http://docs.opencv.org/3.0-beta/mod

• ## Extrinsic camera calibration OpenCVJanuary 25

I am attempting to calibrate the extrinsics of four cameras that I have mounted on a set-up. They are pointing 90 degrees apart. I have already calibrated the intrinsic paramteres, and I am thinking of using an image of a calibration pattern to find

• ## Essential Matrix opencvJanuary 21

If you have 8 perfect tracked points from two images and avoided the degenerate cases why is the essential matrix still wrong some times (or not good enough). Is this a numerical problem? For any hint I grateful. EDIT This is my virtual scene. The ma

• ## essential matrix sometimes not good opencvJanuary 14

I generated from a virtual cube two Cam poses. Then I try to calculate the essential mat from the virtual calculated 2d Points in the images. After that i try to recover the pose to get R and t again. For different cam poses this works mostly but som