img-index

img-index accepts the path to a given directory. It constructs Perceptual hashes for all PNG, GIF and JPEG images it finds and saves them in a database. This database can be used to quickly find similar images using the img-find tool.

This command should be run at least once before using index-find. After that, one should run it whenever the images in the given path change or new ones are added. This is kept separate from img-find, because it takes a while to hash large libraries. Specially with large image files. The tool is smart enough not to re-calculate hashes for files which have not changed. So repeatedly running the tool over the same set of files, will only update those files which have been altered since the last time it was run.

Database

The generated database is a flat file. It is stored in the location specified either in the -db commandline parameter, or in the IMGHASH_DB environment variable.

Usage

go get github.com/jteeuwen/imghash/img-index

License

Unless otherwise stated, all of the work in this project is subject to a 1-clause BSD license. Its contents can be found in the enclosed LICENSE file.