vismatch

Vis(ion)Match(ers) is a unified API for quickly and easily trying 50+ (and growing!) image matching models.

Jump to: Install | Use | Models | Add a Model / Contributing | Acknowledgements | Cite | Download Stats | Documentation

Matching Examples

Compare matching models across various scenes. For example, we show SIFT-LightGlue and LoFTR matches on pairs:

(1) outdoor, (2) indoor, (3) satellite remote sensing, (4) paintings, (5) a false positive, and (6) spherical.

Extraction Examples

You can also extract keypoints and associated descriptors.

Install

vismatch can be installed directly from PyPi. We strongly recommend using uv, but pip should work too

pip install uv             # install uv
uv venv                    # create uv venv
source .venv/bin/activate  # activate uv venv
uv pip install vismatch
# or, if you don't want to use uv
pip install vismatch

or, for development, clone this git repo and install with:

# Clone recursively
git clone --recursive https://github.com/gmberton/vismatch
cd vismatch

uv venv                    # create uv venv
source .venv/bin/activate  # activate uv venv
# editable install for dev work
uv pip install -e . 
# or non-editable install
uv pip install .

Some models require additional optional dependencies which are not included in the default list, like torch-geometric (required by SphereGlue) and tensorflow/larq (required by OmniGlue/ZippyPoint). To install these, use

uv pip install ".[all]"
# or
pip install .[all]

Use

You can use any of the over 50 matchers simply like this. All model weights are automatically downloaded by vismatch.

Python API

from vismatch import get_matcher
from vismatch.viz import plot_matches, plot_keypoints

# Choose any of the 50+ matchers listed below
matcher = get_matcher("superpoint-lightglue", device="cuda")
img_size = 512  # optional

img0 = matcher.load_image("vismatch/assets/example_pairs/outdoor/montmartre_close.jpg", resize=img_size)
img1 = matcher.load_image("vismatch/assets/example_pairs/outdoor/montmartre_far.jpg", resize=img_size)

result = matcher(img0, img1)
# result.keys() = ["num_inliers", "H", "all_kpts0", "all_kpts1", "all_desc0", "all_desc1", "matched_kpts0", "matched_kpts1", "inlier_kpts0", "inlier_kpts1", "matched_confidences"]

# This will plot visualizations for matches as shown in the figures above
plot_matches(img0, img1, result, save_path="plot_matches.png")

# Or you can extract and visualize keypoints as easily as
result = matcher.extract(img0)
# result.keys() = ["all_kpts0", "all_desc0"]
plot_keypoints(img0, result, save_path="plot_keypoints.png")

Command Line Interface / Standalone Scripts

You can also run matching or extraction as standalone scripts, to get the same results as above.

Matching:

# if you cloned this repo, vismatch_match.py is available, else see CLI below
python vismatch_match.py --matcher superpoint-lightglue --out-dir outputs/superpoint-lightglue --input vismatch/assets/example_pairs/outdoor/montmartre_close.jpg vismatch/assets/example_pairs/outdoor/montmartre_far.jpg
# or
uv run vismatch_match.py --matcher superpoint-lightglue --out-dir outputs/superpoint-lightglue --input vismatch/assets/example_pairs/outdoor/montmartre_close.jpg vismatch/assets/example_pairs/outdoor/montmartre_far.jpg

From any location where an python enviroment with vismatch installed is active, you can also run

# for PyPi install, use CLI entry point
vismatch-match --matcher superpoint-lightglue --out-dir outputs/superpoint-lightglue --input path/to/img0 --input path/to/img2

Keypoints extraction:

# if you cloned this repo, vismatch_extract.py is available, else see CLI below
python vismatch_extract.py --matcher superpoint-lightglue --out-dir outputs/superpoint-lightglue --input vismatch/assets/example_pairs/outdoor/montmartre_close.jpg
# or
uv run vismatch_extract.py --matcher superpoint-lightglue --out-dir outputs/superpoint-lightglue --input vismatch/assets/example_pairs/outdoor/montmartre_close.jpg

From any location where an python enviroment with vismatch installed is active, you can also run

# for PyPi install, use CLI entry point
vismatch-extract --matcher superpoint-lightglue --out-dir outputs/superpoint-lightglue --input path/to/img0

These scripts can take as input images, folders with multiple images (or multiple pairs of images), or files with pairs of images paths. To see all possible parameters run

python vismatch_match.py -h
# or
python vismatch_extract.py -h

Available Models

We support the following methods:

Dense: roma, tiny-roma, duster, master, minima-roma, ufm, redimatch[-indoor]

Semi-dense: loftr, eloftr, se2loftr, xoftr, minima-loftr, aspanformer, matchformer, xfeat-star, xfeat-star-steerers[-perm/-learned], edm, rdd-star, topicfm[-plus]

Sparse: [sift, superpoint, disk, aliked, dedode, doghardnet, gim, xfeat, raco]-lightglue, dedode, steerers, affine-steerers, xfeat-steerers[-perm/learned], dedode-kornia, [sift, orb, doghardnet]-nn, patch2pix, superglue, r2d2, d2net, gim-dkm, xfeat, omniglue, [dedode, xfeat, aliked]-subpx, [sift, superpoint]-sphereglue, minima-superpoint-lightglue, liftfeat, rdd-[sparse,lightglue, aliked], ripe, lisrd, zippypoint, loma, loma-r, upal

See Model Details to see runtimes, supported devices, source, and license of each model.

Important: although VisMatch uses a BSD 3-Clause License, the matchers we wrap can have different licenses. Please refer to each matcher's license when using them.

Adding a new method

See CONTRIBUTING.md for details. We follow the 1st principle of PyTorch: Usability over Performance

Documentation

Please see docs at: https://vismatch.readthedocs.io/en/latest/

Acknowledgements

Special thanks to the authors of all models included in this repo (links in Model Details), and to authors of other libraries we wrap like the Image Matching Toolbox and Kornia.

Download Stats

Daily downloads across all vismatch HuggingFace models, updated daily. Click the plot for the interactive version.

Cite

This repo was created as part of the EarthMatch paper. Please cite EarthMatch if this repo is helpful to you!

@InProceedings{Berton_2024_EarthMatch,
    author    = {Berton, Gabriele and Goletto, Gabriele and Trivigno, Gabriele and Stoken, Alex and Caputo, Barbara and Masone, Carlo},
    title     = {EarthMatch: Iterative Coregistration for Fine-grained Localization of Astronaut Photography},
    booktitle = {Proceedings of the IEEE/CVF Conference on Computer Vision and Pattern Recognition (CVPR) Workshops},
    month     = {June},
    year      = {2024},
}