A collection of educational notebooks on multi-view geometry and computer vision.

Overview

Binder

Multiview notebooks

This is a collection of educational notebooks on multi-view geometry and computer vision. Subjects covered in these notebooks include:

  • Camera calibration
  • Perspective projection
  • 3D point triangulation
  • Quaternions as 3D pose representation
  • Perspective-n-point (PnP) algorithm
  • Levenberg–Marquardt optimization
  • Epipolar geometry
  • Relative 2nd cam pose from stereo views w. fundamental matrix
  • Relative 2nd cam pose from stereo views w. homography
  • Bundle adjustment
  • Structure from motion

Note Notebook 5 is working but not as tidy as the rest (yet). This notebook covers the Faugeras method to infer relative pose from a homography.

How to run

The notebooks can be run in the browser by clicking the binder badge Binder. If one is interested in running the notebooks locally, I highly recommend using Docker as there is a dependency on g2opy and ipyvolume, which are challenging to install.

# Builds the environment 
docker build -t multiview_notebooks .

# Start a jupyter lab which can be opened in the browser
docker run -it --rm -p 8888:8888 multiview_notebooks jupyter-lab --ip=0.0.0.0 --port=8888

After starting the jupyter lab, the notebooks can be found in the home directory.
For the source of the Dockerfile, see this repository

Examples of visualizations

For more examples, see this video on youtube

Triangulation




Perspective n Point

[CVPR 2021] Counterfactual VQA: A Cause-Effect Look at Language Bias

Counterfactual VQA (CF-VQA) This repository is the Pytorch implementation of our paper "Counterfactual VQA: A Cause-Effect Look at Language Bias" in C

Yulei Niu 94 Dec 03, 2022
Efficient electromagnetic solver based on rigorous coupled-wave analysis for 3D and 2D multi-layered structures with in-plane periodicity

Efficient electromagnetic solver based on rigorous coupled-wave analysis for 3D and 2D multi-layered structures with in-plane periodicity, such as gratings, photonic-crystal slabs, metasurfaces, surf

Alex Song 17 Dec 19, 2022
Just playing with getting VQGAN+CLIP running locally, rather than having to use colab.

Just playing with getting VQGAN+CLIP running locally, rather than having to use colab.

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Repository of our paper 'Refer-it-in-RGBD' in CVPR 2021

Refer-it-in-RGBD This is the repository of our paper 'Refer-it-in-RGBD: A Bottom-up Approach for 3D Visual Grounding in RGBD Images' in CVPR 2021 Pape

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A Dynamic Residual Self-Attention Network for Lightweight Single Image Super-Resolution

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Official Implementation of Domain-Aware Universal Style Transfer

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Space-event-trace - Tracing service for spaceteam events

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Conversational text Analysis using various NLP techniques

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Object-aware Contrastive Learning for Debiased Scene Representation

Object-aware Contrastive Learning Official PyTorch implementation of "Object-aware Contrastive Learning for Debiased Scene Representation" by Sangwoo

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Image processing in Python

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DG-Font: Deformable Generative Networks for Unsupervised Font Generation The source code for 'DG-Font: Deformable Generative Networks for Unsupervised

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GraPE GraPE (Graph Processing and Embedding) is a fast graph processing and embedding library, designed to scale with big graphs and to run on both of

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codes for IKM (arXiv2021, Submitted to IEEE Trans)

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A PyTorch implementation: "LASAFT-Net-v2: Listen, Attend and Separate by Attentively aggregating Frequency Transformation"

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A PyTorch implementation of Learning to learn by gradient descent by gradient descent

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PyTorch package for the discrete VAE used for DALL·E.

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An unsupervised learning framework for depth and ego-motion estimation from monocular videos

SfMLearner This codebase implements the system described in the paper: Unsupervised Learning of Depth and Ego-Motion from Video Tinghui Zhou, Matthew

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Arbitrary Distribution Modeling with Censorship in Real Time 59 2 60 3 Bidding Advertising for KDD'21

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Quantum-enhanced transformer neural network

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