One of the most popular vertical search features on the web is image search index. What’s really remarkable, however, is how little has changed in the core technology approach to the indexing of multimedia over the last decade. When I was the head of product at FAST back in 1999, we launched the web’s biggest image search on Lycos with over 50 million images (which seemed like a lot at the time!). The service included many leading edge features including black and white and color image filtering, size filtering, and filetype filtering. The main differentiator today continues to be index size and freshness, and companies with the strongest technology in web content discovery have the most advantage. Not surprisingly, Google leads here, as their web crawling capability is far superior to anyone’s on the web. What is surprising, however, is how little has changed over the last decade. Audio and video isn’t significantly different in this regard. The majority of multimedia indexing today relies on the classic “titles and tags” approach, and Google Video is perhaps Google’s most underwhelming search product because of this limitation.
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