Computer Vision and the WebComputer Vision and the Web
Images on the Web Movies, news, sports
916,271 titles
10 mil. videos, 65,000 added daily
350 mil. photos, 1 mil. added daily
1.6 bil. images indexed as of summer 2005
Satellite imagery City streets
Exploring online photo collections: Exploring online photo collections: Flickr.comFlickr.com
• Flickrvision • Flickr tag browser • Flickr time graphs
Artistic VisualizationArtistic Visualization• Jason Salavon
– 100 Special Moments
– Homes for Sale
– Every Playboy centerfold
Problems with image access on the WebProblems with image access on the Web• To find anything on the Web, you must search with words!
• But what if the question is a picture?Small sand-colored
African mammal?Small furry animal with
pointy snout and long tail?
Cute gopher-like beastie that likes to stand up and hang out
in groups?
Beige-colored animal with dark eyespots, ears,
and tip of tail?
Short-term solution: Human computationShort-term solution: Human computation
• Identifying bugs and birds
• Labeling images: ESP Game, Peekaboom
Where does computer vision come in?Where does computer vision come in?
Visual searchVisual search
• Linking physical objects to the web: Microsoft Lincoln project
• Product search: Like.com
• Searching personal photo albums: Riya.com
Visual sentiment analysisVisual sentiment analysis
• Attractiveness: Hot or Not (research project)
• Cuteness: Cute overload
• Interestingness: Flickr
Exploring photo collections in 3DExploring photo collections in 3D
• Photo tourismSnavely, Seitz and Szeliski (SIGGRAPH 2006)
• Automatic photo pop-upHoiem and Efros (SIGGRAPH 2005)
Practical detailsPractical details
• Tuesdays at 3:30, room SN 115• Basic format: weekly discussion group• Paper list: http://www.cs.unc.edu/~lazebnik/fall07• Variable credit: talk to me about doing extra work!
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