Google co-founder Sergey Brin talks about computer vision

In a letter included in Google's annual report, co-founder Sergey Brin talks about one of computer vision's most desired and challenging applications, content based image search:

"Integrating images into search remains a challenge, primarily because we are so reliant on the surrounding text to gauge a picture's relevance. In the future, using enhanced computer vision technology, we hope to be able to understand what's depicted in the image itself."