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  • Rotation Estimation between two images

    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 yaw

    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 Nistér 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 opencv

    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 opencv

    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

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