As part of the development of a system that requires searching by image, we needed to compute feature vectors for use with the Pinecone vector database. All the research we could find focused on either ML approaches, which were untenable due to hopes to perform vector generation in the browser, or hamming distance vector comparison, which are untenable for large scale search.

The README here contains my research into several algorithms' performance, and the repo contains the code that performed the data gathering.

The site alt-text.org is still alpha quality and under active development, and the library backing it is quite small so most searches will fail, but feel free to play around with it.

Twitter users can help build the library with the link in the upper right corner, though it does not yet work on mobile.