undouble

The aim of undouble is to detect (near-)identical images. It works using a multi-step process of pre-processing the images (grayscaling, normalizing, and scaling), computing the image hash, and the grouping of images. A threshold of 0 will group images with an identical image hash. The results can easily be explored by the plotting functionality and images can be moved with the move functionality. When moving images, the image in the group with the largest resolution will be copied, and all other images are moved to the undouble subdirectory. In case you want to cluster your images, I would recommend reading the blog and use the clustimage library.

The following steps are taken in the undouble library:

• Read recursively all images from directory with the specified extensions.
• Compute image hash.
• Group similar images.
• Move if desired.

⭐️ Star this repo if you like it ⭐️

Blogs

• Read the blog to get a structured overview how to detect duplicate images using image hash functions.

Documentation pages

On the documentation pages you can find detailed information about the working of the undouble with many examples.

Installation

It is advisable to create a new environment (e.g. with Conda).

conda create -n env_undouble python=3.8
conda activate env_undouble

Install bnlearn from PyPI

pip install undouble            # new install
pip install -U undouble         # update to latest version

Directly install from github source

pip install git+https://github.com/erdogant/undouble

Import Undouble package

from undouble import Undouble

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Examples:

Example: Grouping similar images of the flower dataset

Example: List all file names that are identifical

Example: Moving similar images in the flower dataset

# -------------------------------------------------
# >You are at the point of physically moving files.
# -------------------------------------------------
# >[7] similar images are detected over [3] groups.
# >[4] images will be moved to the [undouble] subdirectory.
# >[3] images will be copied to the [undouble] subdirectory.

# >[C]ontinue moving all files.
# >[W]ait in each directory.
# >[Q]uit
# >Answer: w

Example: Plot the image hashes

Example: Three different imports

The input can be the following three types:

* Path to directory
* List of file locations
* Numpy array containing images

Example: Finding identical mnist digits

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Citation

Please cite in your publications if this is useful for your research (see citation).

Maintainers

• Erdogan Taskesen, github: erdogant

Contribute

• All kinds of contributions are welcome!
• If you wish to buy me a Coffee for this work, it is very appreciated :)

Licence

See LICENSE for details.

Other interesting stuf

• https://github.com/JohannesBuchner/imagehash
• https://towardsdatascience.com/a-step-by-step-guide-for-clustering-images-4b45f9906128