Are there libraries available that create an image search tool with Apache Solr?

I'm considering using apache solr as the search backbone on my site.

Along with standard text based search of documents, I want to create an image search tool.

Are there any lib开发者_高级运维raries that allow solr to create a search index of images in crawled websites?

Are there other, better, options available?

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1. As @Mikos mentioned in the comments, what I was looking for is a Content Based Image Retrieval system. There does exist on for use with Apache SOLR and it's called LIRe.

2. Here is a list of CBIR systems on Wikipedia.

3. Here is the tool that I've been investigating for use with a Linux based image search system I'm working on -- The GNU Image Finding Tool - GIFT. This is open source and seems to be the right tool for the job when you already have the database of images.