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Research Projects
  • Arista (lARge-scale Image Search To Annotation)
    Arista is a data-driven image annotation system, which annotates an image based on large-scale image search. Its assumption is that close similar images share similar semantics. It targets at a practical image annotation engine which is able to automatically annotate images of any popular concepts. Starting from 2006, Arista is now able to perform online tagging based on 2 billion web images leveraging near-duplicate detection technique.
  • MindFinder: Finding Images by Sketching
    Sketch-based image search is a well-known and difficult problem, in which little progress has been made in the past decade in developing a large-scale and practical sketch-based search engine. We have revisited this problem and developed a scalable solution to sketch-based image search. The MindFinder system has been built by indexing more than two million web images to enable efficient sketch-based image retrieval, and many creative applications can be expected to advance the state of the art.
  • Picto: A large scale visual indexing and recognition system
    In this project, we focus on developing algorithms for large-scale image indexing and recognition. Our research covers low-level image features, middle level image representations, and indexing and ranking algorithms.
  • Travel Guide
    The Travel Guide project has the following mission: Showcase innovations to help users better plan, enjoy, and share their travel experiences. During this process, we transfer technologies to product teams, and drive further research from lessons learned in real world deployment. currently the service is limited to China area, (in Chinese).
  • Website Structure Understanding and its Applications
    Website structure understanding can be treated as a reverse engineering for the purpose of automatically discovering the layout templates and URL patterns of a website, and understanding how these templates and patterns are integrated to organize the website. The study of this problem has had a great impact to many applications which can leverage such site-level knowledge to help web search and data mining.

Lei Zhang (张磊)

Senior Researcher

Microsoft Research
One Microsoft Way
Redmond, WA 98052
United States

Email: leizhang AT