I wonder how reverse image search services like tineye.com work …?

Question

How Would the Reverse Image Search Engines like TinEye Work ? I mean what parameters are required to do an image search ?

Answer 1

• database: Generaly you have set of images that are collected from web sites. For each image extract key features (SURF, SIFT, whatever) in a form of numerical vectors associated to each image. Vectors are stored in searchable database.

• When you give image to TinEye this image is processed and key features are extracted. Algorithm for matching features to features in database is run and close matches are found. Associated list of images to matched features vectors is extracted and presented as links to web images.