Welcome to imgphash

Provide an image class that is able to calculate similarity to other images using the phash value

Homepage

Install

npm i imgphash

Use

This module provides a class HashImage that you can use to hash an image and compare it

• Create a HashImage from a url

const image = await HashImage.fromUrl(url1);

• Create a HashImage from a Node buffer

const image = new HashImage(buffer);

• Get the hash of 2 images and compare them

const image1 = await HashImage.fromUrl(url1);
const image2 = await HashImage.fromUrl(url2);
const hash1 = await image1.phash(); // PHash instance
const hash2 = await image2.phash();
const similarity = hash1.compare(hash2);

The hash function returns an instance of PHash

• Or just compare 2 image objects, this is going to internally calculate their hash and use it

const image1 = await HashImage.fromUrl(url1);
const image2 = await HashImage.fromUrl(url2);
const similarity = await image1.compare(image2);

All the comparisons return a value between 0 and 1. 0 meaning that the images are completely different and 1 meaning they are exactly the same image

Author

Victor Martinez jaster.victor@gmail.com

Contributing

Contributions, issues and feature requests are welcome!
Feel free to check issues page.

Show your support

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License

Copyright 2022 Victor Martinez jaster.victor@gmail.com.
This project is MIT licensed.

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