2020-12-13 11:34:00 -0600 | commented question | recover pose scale Look at these references: Tutorial on Visual Odometry - by Davide Scaramuzza |
2020-12-05 05:14:19 -0600 | answered a question | historical performance test cast data in build pipeline? I am not aware of any historical performance data stored somewhere for the OpenCV buildbots. And I doubt performance dat |
2020-11-28 04:26:26 -0600 | commented question | Projecting point cloud to image plane in order to estimate camera pose Without at least intensity information for the pointcloud, the only common information between image and pointcloud shou |
2020-11-28 04:23:25 -0600 | commented question | Projecting point cloud to image plane in order to estimate camera pose Without at least intensity information for the pointcloud, the only common information between image and pointcloud shou |
2020-11-28 04:00:54 -0600 | commented question | Projecting point cloud to image plane in order to estimate camera pose Do you have pointcloud information with intensity (pcl::PointXYZI) or RGB (e.g. pcl::PointXYZRGB) data? If you have at |
2020-11-19 05:22:56 -0600 | commented answer | opencv 4.5.0 cvDiv/cvMat equivalent ? You can directly do: Mat mat1(..); Mat mat2(..); |
2020-11-17 17:08:51 -0600 | commented question | About depth-sight For a computer vision book: Computer Vision: Algorithms and Applications, 2nd ed., Richard Szeliski |
2020-11-16 15:29:49 -0600 | received badge | ● Great Answer (source) |
2020-11-16 10:56:49 -0600 | commented question | How to get an rvec replacement from quaternion or euler values Easiest thing is to use the Eigen library to handle these kind of conversions. Look at Eigen::AngleAxisd and Eigen::Quat |
2020-11-16 10:55:59 -0600 | commented question | How to get an rvec replacement from quaternion or euler values Easiest thing is to use the Eigen library to handle these kind of conversions. Look at Eigen::AngleAxisd and Eigen::Quat |
2020-11-14 12:55:36 -0600 | commented answer | At my Wit's End with OpenCV Build from Source, Please Help. You definitively do not need to copy any DLLs or copy any Python packages. You don't need to copy so on Linux, it is sim |
2020-11-14 12:52:52 -0600 | answered a question | At my Wit's End with OpenCV Build from Source, Please Help. I just tried it successfully: install Python on Windows: https://www.python.org/downloads/ after the installation, you |
2020-11-13 02:29:02 -0600 | commented question | How to calibrate camera with opencv circles grid pattern? Perform calibration on downscaled images and scale the intrinsics matrix. |
2020-11-05 01:37:09 -0600 | commented question | How to calibrate camera with opencv circles grid pattern? A comment about the calibration process. I've found information, that the circles grid algorithm is better Calibra |
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2020-10-24 15:27:55 -0600 | received badge | ● Nice Answer (source) |
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2020-10-15 08:19:41 -0600 | commented question | Different output from Python and C++ in CalibrateHandEye() What I would do: remove Python OpenCV installed by pip build OpenCV with Python bindings, can be done easily even on W |
2020-10-15 04:50:52 -0600 | commented question | Different output from Python and C++ in CalibrateHandEye() How did you install Python OpenCV? If you are using pip install, you are not using the same config (e.g. Math libraries, |
2020-10-12 11:29:58 -0600 | commented question | Building OpenCV without SSE2 and Neon In any case, the CPU optimizations build options page contains information about how to disable optimizations. |
2020-10-12 04:47:47 -0600 | commented question | Building OpenCV without SSE2 and Neon Which CPU model are you targeting? Are you sure your CPU does not support even SSE2? Have a look at this page: CPU opti |
2020-10-11 09:58:27 -0600 | commented question | Best/efficient development workflow? Install OpenCV globally (via sudo make install -j12) This is not recommended to install globally. Instead, use CMAK |
2020-10-11 06:23:13 -0600 | commented question | Building OpenCV without SSE2 and Neon There should be nothing to do. It will automatically detect the CPU and add the supported flags. Which CPU/architectur |
2020-10-11 06:22:51 -0600 | commented question | Building OpenCV without SSE2 and Neon There is nothing to do. It will automatically detect the CPU and add the supported flags. Which CPU/architecture are y |
2020-10-05 05:14:17 -0600 | commented question | Stitching pictures from rotating camera Computing R from c1Mo and c2Mo is just an easy way to compute the rotation between the two camera viewpoints in Blender. |
2020-10-03 12:33:51 -0600 | commented question | Stitching pictures from rotating camera What is important is that for a rotating camera, the Homography is H = K x R x K^-1. With K the camera intrinsic paramet |
2020-10-02 07:07:59 -0600 | commented question | Stitching pictures from rotating camera This can be a good start. |
2020-09-26 09:00:45 -0600 | commented answer | How to convert stereo camera distances, pixels to mm See reprojectImageTo3D(). |
2020-09-25 02:56:36 -0600 | commented question | What's the pseudocode or algorithm inside solvePnP's SOLVEPNP_ITERATIVE flag? Have a look at the documentation page: https://docs.opencv.org/ And search for Rodrigues documentation in the calib3d m |
2020-09-24 13:26:34 -0600 | commented answer | warpPerspective() to a different origin [SOLVED] Again for me this is similar to Homogeneous transformation. So I would do: M' = T^-1 . M . T So you pass to the functi |
2020-09-24 13:26:15 -0600 | commented answer | warpPerspective() to a different origin [SOLVED] Again for me this is similar to Homogeneous transformation. So I would do: M' = T^-1 . M . T So you pass to the functi |
2020-09-24 13:25:02 -0600 | commented answer | warpPerspective() to a different origin [SOLVED] Again for me this is similar to Homogeneous transformation. So I would do: M' = T^-1 . M . T So you pass M' no? |
2020-09-24 13:24:36 -0600 | commented answer | warpPerspective() to a different origin [SOLVED] Again for me this is similar to Homogeneous transformation. So I would do: M' = T^-1 . M . T |
2020-09-24 06:10:50 -0600 | commented question | What's the pseudocode or algorithm inside solvePnP's SOLVEPNP_ITERATIVE flag? It is LM non-linear optimization method with the analytical form of the derivatives of the rotation matrix wrt. exponent |
2020-09-24 06:10:22 -0600 | commented question | What's the pseudocode or algorithm inside solvePnP's SOLVEPNP_ITERATIVE flag? It is LM non-linear optimization method with the analytical derivatives of the rotation matrix wrt. exponential coordina |
2020-09-23 15:21:32 -0600 | commented answer | warpPerspective() to a different origin [SOLVED] I guess you are on your own now... My final attempt: why not do something similar to homogeneous transformation? some |
2020-09-23 15:17:41 -0600 | commented answer | warpPerspective() to a different origin [SOLVED] I guess you are on your own now... My final attempt: why not do something similar to homogeneous transformation? some |
2020-09-23 15:16:14 -0600 | commented answer | warpPerspective() to a different origin [SOLVED] I guess you are on your own now... My final attempt: why not do something similar to homogeneous transformation? some |
2020-09-23 15:15:22 -0600 | commented answer | warpPerspective() to a different origin [SOLVED] I guess you are on your own now... My final attempt: why not do something similar to homogeneous transformation? some |
2020-09-22 13:46:26 -0600 | received badge | ● Necromancer (source) |
2020-09-22 11:09:02 -0600 | commented answer | warpPerspective() to a different origin [SOLVED] Sorry but I still don't get you. In input of warpPerspective() you pass the M (the 3x3 transformation or mapping matrix |
2020-09-22 05:57:51 -0600 | commented question | deletion of useless posts Probably questions closed for off-topic or not relevant to OpenCV can be deleted. Other than that, unless for obvious r |
2020-09-22 05:57:31 -0600 | commented question | deletion of useless posts Probably questions closed for off-topic or not relevant to OpenCV can be deleted. Other than that, unless for obvious r |
2020-09-22 03:08:21 -0600 | commented answer | warpPerspective() to a different origin [SOLVED] Sorry I still don't get why you cannot just change M13, M23 and M33. And change your (cx,cy)=(0.5,0.5) to be (cx,cy)=(im |
2020-09-22 03:07:33 -0600 | commented answer | warpPerspective() to a different origin [SOLVED] Sorry I still don't get why you cannot just change M13, M23 and M33. At the end, the fonction assumes X' = HX. With X a |
2020-09-20 09:50:48 -0600 | commented question | VSCode autocompletion with OpenCV (from source) For which language? For C++, have a look at the C / C++ / IntelliSense plugin. |
2020-09-19 21:17:16 -0600 | answered a question | warpPerspective() to a different origin [SOLVED] Can you not just expand the second equation to modify M13, M23, M33 accordingly so as to get the first equation form? S |
2020-09-13 04:41:26 -0600 | commented question | why the order of colors in drawChessboardCorners() changes? You have to use the asymmetric chessboard pattern if you want to have unique chessboard pose. |
2020-09-10 06:51:32 -0600 | commented question | Estimate camera pose from homography? I don't understand. You have two non-planar scenes and you are aware that Homography transformation holds only for plana |