How to solve the problem of finding similar images?

Question

Images

Hello!
Elasticsearch is used in the project, including for internal use. There is a task:
We have a picture of a product 500x500 from a third-party site. We have pictures (files) of goods, but the sizes are 1024x1024 (the sizes can be different). Task: upload product image - get an identical image from our database.
Can you please suggest a tutorial or maybe a service that can solve our problem?

Answer 1

You can use an algorithm like dhash. Count image signatures in your database (once). You count the singature for the image at the input and look for the signature in the database.
blog.iconfinder.com/detecting-duplicate-images-usi...

Answer 2

Possibly Google API

Answer 3

Or Microsoft computer-vision-api