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Questions tagged [structure-from-motion]

72 questions
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How to 3d reconstruct robustly from multiple images with known poses in OpenCV

The traditional solution for high resolution images examples : extract features (dense) for all images match features to find tracks through images triangulate features to 3d points. I can give two problem here for my case (many 640*480 images…
Yasin Yousif
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Averaging SIFT features to do pose estimation

I have created a point cloud of an irregular (non-planar) complex object using SfM. Each one of those 3D points was viewed in more than one image, so it has multiple (SIFT) features associated with it. Now, I want to solve for the pose of this…
John B
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2D Image to 3D world Coordinates

We crawled a set of images from the Google Street View (GSV) API. I want to estimate the 3D World coordinate from 2D Image given the following: 1. The GPS location (i.e., latitude and longitude) of the camera capturing the image Conversion of GPS…
fararjeh
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Structure from Motion or SLAM for windows?

Is there any libraries that can be used on windows for using SfM or SLAM? This will be in python btw So far everything I am seeing is in Linux
Jacob Whitten
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OpenSFM setup.py file returning error after building via Docker

I am having an issue building OpenSFM. I am getting an error from running the setup.py file. First, I am running Ubuntu 16.04 on VirtualBox. I installed Docker and ran docker pull freakthemighty/opensfm This image was successfully built.…
user6068326
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Computer Vision: "Inverse" Structure From Motion

Note: I am not asking for code just the name of some algorithms I can research Problem I'm trying to do a 3D reconstruction from multiple images where the subject is rotating. I don't have a lot of experience in the CV field and my mathematics is…
hammus
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Where are located the routine and the result features matched in OpenDroneMap?

I'm not an expert in pyhton, and I'm looking for where is located the routine and the result of the matching features of the images in OpenDroneMap. Because I want to create or add a sub routine who select random features matches of all the final…
Ruben Garcia
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Constructing a rough 3D points from structure from motion technique

I am using OpenCV and Python. Let say I have this sequence video of the car. And I have tracked some 'interesting points' of the car with the cv2.goodFeaturesToTrack and cv2.calcOpticalFlowPyrLK. Now, given the traced points, I want to estimate a…
Hafiz Hilman Mohammad Sofian
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Initial camera intrinsic and extrinsic matrix and 3D point coordinates for Bundle Adjustment

I want to reconstruct 3d scene using multi rgb cameras. The input data has no camera calibration information so I want to use bundle adjustment algorithm (Ceres-solver) to estimate the calibration information. Now I have already obtained pair-wise…
Xiaoyun Yuan
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Structure from Motion : Error calculating Rotation and translation matrix from Essential matrix

I am trying to simulate the structure from motion. consider for a case where the motion is in x direction. I created the matching points as given below where there is a movement of 50 pixels in x direction only. Previous Image co-ordinate [0]…
shashi_ms
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Error running python script in terminal: OSError: [Errno 2] No such file or directory

I'm trying to use a piece of software called "bundler_sfm" which is executed using a python script. The software I'm trying to use is available here, the script is in the utils directory if you want to have a look. When trying to run it I get the…
nbdy_
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how to reconstruct in 3d of a scene from two images

I wish to make a 3D reconstruction of a scene. For that, I have 2 images of the scene taken from two different angles. Is there a library that does that? (I work in python) if not, what are the steps that must be followed? if you have the code…
lyn87
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Nature of relationship between optic flow and depth

Assuming the static scene, with a single camera moving exactly sideways at small distance, there are two frames and a following computed optic flow (I use opencv's calcOpticalFlowFarneback): Here scatter points are detected features, which are…
rocknrollnerd
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Question about SfM and camera re-localizatoin with ground truth camera pose

all! I'm a beginner on computer vision field :) I have 2 questions about SfM and camera re-localization. As I know, the general pipeline of SfM can be summarized as follow, 1. Extract local feature 2. Match local features(key points) between image…
jinsoo Park
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I am working on a SFM in matlab and the estrelpose function is giving me a headache

I am doing a SFM work on MATLAB and I am using the estrelpose function, and it´s giving me 4 different relative pose, shoundt it give just 1 relative pose value? I already checked the calibration of the camera, the matched features and they are…
Rui 29PT
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