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Questions tagged [3d-reconstruction]

In computer vision and computer graphics, 3D reconstruction is the process of capturing the shape and appearance of real objects.

This tag should be used for programming issues related to 3D reconstruction in the field of computer vision.

3D reconstruction consists in creating a 3-dimensional model of an object or scene from several 2-dimensional images of it.

366 questions
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Detecting/correcting Photo Warping via Point Correspondences

I realize there are many cans of worms related to what I'm asking, but I have to start somewhere. Basically, what I'm asking is: Given two photos of a scene, taken with unknown cameras, to what extent can I determine the (relative) warping between…
Jabberwock
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How to auto-remove redundant surface pieces that are closer to the viewpoint

Assume I have two parts of 3D mesh, which needs to be fused into a integrated 3D model. After fusion, some facets that are not used for the closure of the 3D model are redundant, and I want to remove them automatically. I'd like know if some filters…
zhangxaochen
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reconstruct the keypoints from consecutive images

I have some consecutive images,and had extract the keypoints of every image. If these images all has 8 same keypoints,is there any algorithm to build the 8 keypoints' world coordinate? I had googled that euclidean reconstruction may could done…
zdczdcc
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3D mapping of Velodyne scans

I am trying to map the environment with pointclouds obtained from a Velodyne VLP-16 mounted on a moving car. I am trying to use ICP algorithm from the pcl, but the results are awful. I think that too many points are different in one scan from the…
Kailegh
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CGAL Scale-Space reconstruction with normals and colors

I am using CGAL for point cloud processing, and generating mesh out of it using Scale-Space reconstruction. I recently require to save color and normal information. So, I used boost::tuple(Point_3, Vector_3, CGAL::Color) for filters: simplification,…
Syed
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Project Tango - 3D Reconstruction

I'm trying to use the C 3D Reconstruction Library to get a mesh from the Tango device. In the Mesh Building Functions there's a summary of the flow to use, which shows that I have to call the Tango3DR_update function several times and then call the…
Oren
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Kinect Infrared Sensor can't detect black color: How to solve this?

I want use Kinect Fusion to reconstruct a pair of black leather shoes. But when I save the mesh, I get a mesh like this. It's broken. I know that black color will block all the light so infrared light doesn't come back to the depth camera.But I…
Frank_Liu
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I have 8 points in a point cloud data. How do I reconstruct points to form a cube of point cloud data?

Given the 8 corner points, I want to reconstruct them and fill up the cube full of point cloud data. Using Point Cloud Library, how can I do that?
Username
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OpenCV SFM Xcode 7.2: Undefined symbols for architecture x86_64: cv::sfm::reconstruct

I have linked to all the appropriate libraries and headers in my Xcode project (where I have the samples files from OpenCV for scene_reconstruction), after building and installing OpenCV with the contrib module. I have also applied the #define…
gunshi
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Image coordinate of 3D point in camera image.(if TSAI calibration is given)

Suppose you are given TSAI calibration parameters of a camera(f, kappa, cx, cy, sx, rx, ry, rz, tx, ty, tz). If we have a point X,Y,Z in the world co-ordinate system. What would be the image co-ordinate(u,v) for that point in terms of these…
Rahul Sankhwar
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Adaptive 3D grid for Surface Reconstruction

I have implemented the algorithm described in http://physbam.stanford.edu/~fedkiw/papers/stanford2001-03.pdf to perform Surface Reconstruction from 3D unorganized data sets (Point Clouds). The main characteristic of this method is to represent a…
Federico Nardi
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Loop Feature Matching

Hello I have to achieve feature stereo matching for egomotion estimation. From Paper "Multispectral Stereo Odometry " : "The feature in the right image that maximizes the similarity function for a given feature in the left image is selected as…
Linux
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Decompose homography matrix to rotation and translation

how can you get the correct R and t from H when you have 4 solutions. From my understanding you can only eliminate two. Is there really no way to get the correct solutions if you only have points on a single plane? Thanks for any help.
user3077796
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Given two images of same object from two views.How to decide which one is left view and which oen is right view

Given two images of same object from two views.How to decide which one is left view and which one is taken from the right side. I have calculated the corresponding matching points and have removed the outliers by using fundamental matrix calculated…
Optimus 1072
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Essential Matrix opencv

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…
user3077796
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