Questions tagged [structure-from-motion]
The structure-from-motion tag has no usage guidance.
structure-from-motion
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Computer Vision, Extrinsic calibration. Determining the camera pose of a number of cameras using OpenCV, SfM(custom) and Python
I am a novice programmer and new to this platform, so I apologise upfront for any ignorance.
Forewarning: The problem I seek to overcome may not be strictly programming(python) based, but instead ...
- 1
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OpenCV : How to compute 3D points with SfM methods with a known fundamental matrix?
For a university project, we are working on implementing a basic SfM pipeline, using Middlebury's "temple" dataset. This means that, for each image, the projection matrix for that given ...
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54
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RTK-georeferenced textured mesh with Meshroom (Drone imagery)
I'm quiet new to Meshroom and photogrammetry topics.
I want to compute a georeferenced textured mesh of a survey site with Meshroom. I have some sample drone images with RTK files (rinex.obs and ...
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NeRF to Pointcloud
I am currently trying to study Neural radiance fields and i was looking for a way to extract a pointcloud from it.
In particular i am trying to use the COLMAP pointcloud and compare the real color ...
- 11
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2
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Understanding cv2.recoverPose's coordinate frame transformations
I am having problems understanding the functionality of cv2.recoverPose(points1, points2). As of my understanding of the documentation, this function should return the rotation matrix from camera1 to ...
- 156
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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
...
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284
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2D to 3D Model Failure using Structure from Motion (OpenCV Python)
import cv2
import numpy as np
import os
import pyvista as pv
# Input directory containing images
input_dir = "C:/Users/Pictures/FYP/Box2"
# Get a list of all image file paths in the ...
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559
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colmap localization: get camera position
I'm using colmap. I succeed to visualize a 3D sparse reconstitution from a video.
Now I have some new images from the same scene and I want to (only) localize them. I want the (x,y,z, angles) of the ...
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COLMAP running error in remote server while running Non-Rigid NeRF
I was checking the github code of LLFF : https://github.com/Fyusion/LLFF, Non-Rigid NeRF : https://github.com/facebookresearch/nonrigid_nerf and followed the suggested steps to install requirements. ...
- 65
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Object reconstruction from structure from motion with mask RCNN
I'm doing object reconstruction from structure from motion. The current situation right now, is I'm getting a multiple views for a car and apply a mask rcnn for that object to remove the background, ...
- 2,257
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Meshroom Meshing node fails with "Depth map fusion gives an empty result"
I have a photogrammetry pipeline in Meshroom (lightly modified from the default). The pipeline fails on the Meshing node with the error "Depth map fusion gives an empty result."
My ...
- 438
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246
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How to use OpenCV triangulatePoints and GPS data properly?
I am trying to estimate the 3D position of a world coordinate from 2 frames. The frames are captured with the same camera from different positions. The problem is, the estimation is wrong.
I have
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-2
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1
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158
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How to color the 3D points cloud
I've tried to do 3d reconstruction using multiple images and I also have my camera intrinsics params. I used SFM in Matlab the 3D points are the same color, I wonder how can I visualize the 3D points ...
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What's the difference between factor graph optimization and bundle adjustment?
I see that in SLAM literatures, factor graph optimization is frequently used. While in Structure from Motion literatures, usually they use bundle adjustment. What's the difference between the two ...
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OpenCV - Correctly recovering the pose and landmark positions from 2d image points
I'm trying to do 3D scene reconstruction and camera pose estimation on video input, however the camera positions are not matching what I am seeing in the video.
Here is the code I wrote to recover the ...
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