# \#3d **URL:** https://forum.opencv.org/tag/3d/153.md [Latest](https://forum.opencv.org/latest.md) · [Categories](https://forum.opencv.org/categories.md) · [Tags](https://forum.opencv.org/tags.md) --- ## [Undistortion of 3D image from ToF camera](https://forum.opencv.org/t/undistortion-of-3d-image-from-tof-camera/20162)
**Author:** [@Kukuev](https://forum.opencv.org/u/Kukuev)\ **Replies:** 1\ **Last updated:** [February 8, 2025, 11:20am UTC](https://forum.opencv.org/t/undistortion-of-3d-image-from-tof-camera/20162 "2025-02-08T11:20:09Z")
Hello, Can anybody advise on an existing function (if it exists) or algorithm to undistort and align a depth image received from a ToF camera (IFM O3D312)? The task is to get an object’s dimensions lying on a flat surf… --- ## [About the 3D Vision AI category](https://forum.opencv.org/t/about-the-3d-vision-ai-category/18614)
**Author:** [@philnelson](https://forum.opencv.org/u/philnelson)\ **Replies:** 0\ **Last updated:** [August 29, 2024, 5:09pm UTC](https://forum.opencv.org/t/about-the-3d-vision-ai-category/18614 "2024-08-29T17:09:01Z")
This category is for discussion of 3D cameras, especially those that use AI to process data along with OpenCV such as those from Orbbec. --- ## [Shadow problem when rendering a 3D object on an Aruco marker using Ovis module](https://forum.opencv.org/t/shadow-problem-when-rendering-a-3d-object-on-an-aruco-marker-using-ovis-module/6241)
**Author:** [@LEON\_MODIC](https://forum.opencv.org/u/LEON_MODIC)\ **Replies:** 0\ **Last updated:** [November 16, 2021, 4:46pm UTC](https://forum.opencv.org/t/shadow-problem-when-rendering-a-3d-object-on-an-aruco-marker-using-ovis-module/6241 "2021-11-16T16:46:02Z")
Hello, I am working on my bachelor thesis about estimating the light source from a single image in context of augmented reality. The estimation part is already working to a degree and now I wanted to visualize it using… --- ## [How to run sample in 3d module (opencv5)](https://forum.opencv.org/t/how-to-run-sample-in-3d-module-opencv5/12483)
**Author:** [@laurent.berger](https://forum.opencv.org/u/laurent.berger)\ **Replies:** 0\ **Last updated:** [March 22, 2023, 11:59am UTC](https://forum.opencv.org/t/how-to-run-sample-in-3d-module-opencv5/12483 "2023-03-22T11:59:30Z")
Hi, There is a sample in 3d module(opencv5). How to run this sample is not clear. I downloaded a data base as it is written. there a rgb.txt and depth.txt file. Now I understand that file are not in a good format. I… --- ## [Infos about mapping3d](https://forum.opencv.org/t/infos-about-mapping3d/5378)
**Author:** [@lben0110](https://forum.opencv.org/u/lben0110)\ **Replies:** 3\ **Last updated:** [October 13, 2021, 2:55am UTC](https://forum.opencv.org/t/infos-about-mapping3d/5378 "2021-10-13T02:55:33Z")
Hi @Tetragramm, I’m interested in your 3Dmapping application, developped in the opencv\_contrib on your github and I have some questions, I hope you can help me with. My use-case consists on estimating 3d detected objec… --- ## [How to transform one ArUco marker coordinate system to another?](https://forum.opencv.org/t/how-to-transform-one-aruco-marker-coordinate-system-to-another/2644)
**Author:** [@SpecialYong](https://forum.opencv.org/u/SpecialYong)\ **Replies:** 1\ **Last updated:** [April 10, 2021, 10:03pm UTC](https://forum.opencv.org/t/how-to-transform-one-aruco-marker-coordinate-system-to-another/2644 "2021-04-10T22:03:32Z")
Assuming there are two ArUco markers in space, we can easily obtain the pose information (rvecs and tvecs) of these two markers through detectMarkers and estimatePoseSingleMarkers. Now, through what kind of rigid transfo… --- ## [How to create a 3d point with RGB color in OpenCV by using c++?](https://forum.opencv.org/t/how-to-create-a-3d-point-with-rgb-color-in-opencv-by-using-c/1170)
**Author:** [@jony](https://forum.opencv.org/u/jony)\ **Replies:** 2\ **Last updated:** [January 29, 2021, 2:58am UTC](https://forum.opencv.org/t/how-to-create-a-3d-point-with-rgb-color-in-opencv-by-using-c/1170 "2021-01-29T02:58:18Z")
How to create a 3d point with RGB color in OpenCV by using c++? or how to create a point cloud? Just like pcl::PointXYZRGB in pcl library, and even for other kinds of 3d point types, like pcl::PointXYZI(I means intens…