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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.

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Relative depth determination

Can anyone point me in the right direction here? I've several images (birds eye view) and I'm to determine if the object I'm looking it is sloped/has varying distance. Given multiple pictures and different view points , how do I proceed to identify…
andersonpaac
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How to get Camera Projection Matrix to triangulatePts after calibration and rectification

I'm able to figure out how to produce the camera matrix for a set of stereo cameras without recitification. What I do is I call calibrateCamera twice, this gives me C1, R1 and T1 and C2, R2 and T2, for each camera. I combine this to make the…
dev_nut
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convert depth map (resulting from photometric stereo) to 3d mesh

I'm woking on project regarding 3d reconstruction. I obtained my depth map from photometric stereo method. Now, what I want to do, is convert the depth map to 3d mesh that i can visualise on meshlab for example. Can anyone tell me how can i do that…
lyn87
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3D Reconstruct from multiple view

I have a computer vision problem recostruction: I have multiple view took with an uncalibrated camera (from wich i know to have fx = fy = f, s=0, and the parameters not varying) The points that I can match from the different views all lay on a…
Sam
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Camera Calibration and 3D Reconstruction

I have 9 pictures taken with an uncalibrated natural camera (which should means f_x = f_y = f). The intrinsic parameters are all the same for all the pictures. The pictures are images of the same 3D world tooken with different 3D orientation and 3D…
Sam
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matlab: How to get textured using triangulation points in 3d reconstruction

I am working on 3d Reconstruction from two views. Till now I have got Fundamental matrix, Essential matrix and Triangulation Points. After this stage, how do I go forward to obtain textured image from the input image? and save those results in VRML…
user3830162
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Reconstruction 3d on plane from 2d projection with camera calibration parametrs of plane

Trying to reconstruct 3D-coordinates of point on plane from 2D-Pixel-Coordinates in a Camera Picture, using a extrinsic and intrinsic camera parameters from "Camera Calibration Toolbox for Matlab". intrinsic parameters: Focal Length: fc = […
Vadim want to know
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What's the difference between INuiFusionColorReconstruction::IntegrateFrame and ProcessFrame?

I'm learning KinectFusion, hope to use it to build a reconstruction application for 3D print. Currently i'm confused by IntegrateFrame and ProcessFrame method of INuiFusionColorReconstruction. ProcessFrame has one more parameter named…
Clones1201
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Calculating value y for each XI and XII in MATLAB:

I am currently working in matlab to design a way to reconstruct 3D data. For this I have two pictures with black points. The difference in the amount of points per frame is key for the reconstruction, but MATLAB gives an error when matrixes are not…
user3636194
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Camera matrix evaluation

I have done some camera calibration for 3D reconstruction from multi-view images. I want to compare my result with the ground truth for the camera matrices. I have worked with the dinosaur data set from:…
user3178756
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Why is the reconstructed model a scaled version using SfM(Structure from motion)?

I am learning structure from motion by myself and have read many materials. Even if I have intrinsic parameters of the camera, a metric reconstruction is obtained and produces a scaled model. From one material metric 3D reconstruction means that…
Jogging Song
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3D reconstruction and movement of the subject

I am reading a lot about 3D reconstruction, as I want to implement it for my product using OpenCV. A thing I want to confirm is if it's possible to do 3D reconstruction of a changing scene. I will explain better. All of the articles talk about a…
aledalgrande
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Human height estimation using one mono calibrated camera

I am working on an algorithm to estimate the height of detected people in a video, and I'm stuck. The part that I have working is the detection of people using the HoG algorithm, so I have a bounding box for every person in the frame. And I have…
Ruckus
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How do i write Emgu Mcvpoint3d32f points to .ply file format 3D recontruction and Mesh

I have huge collection of Emgu mcvpoint3d32f points. I am confused to write those point into a .ply file format . Through those point i want to create a mesh using meshlab. How do i write those points into an .ply file format . How do i get vertex…
DS kumar
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3D Reconstruction upto real scale

I am working on a project to detect the 3D location of the object. I have two cameras set up at two corners of the room and I have obtained the Fundamental matrix between them. These cameras are internally calibrated. My images are 2592 X 1944 K =…
amoghesturi
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