1
Sunil Ramesh, Arnab Dhua, Gurumurthy D Ramkumar, Gautam Bhargava, Sonja E Hyde Moyer: Shape-based search of a collection of content. A9 com, Novak Druce Connolly Bove Quigg, June 11, 2013: US08463036 (97 worldwide citation)

Shape-based search of a collection of content associated with one or more images of inventory items (“inventory images”) is enabled at least in part by associating the collection of content and/or its associated inventory images with representative refinement shapes. Inventory items may be grouped i ...


2
Douglas R Gray, Arnab S Dhua, Yu Lou, Sunil Ramesh: Providing overlays based on text in a live camera view. A9 com, Hogan Lovells US, October 20, 2015: US09165406 (23 worldwide citation)

Approaches are described for rendering augmented reality overlays on an interface displaying the active field of view of a camera. The interface can display to a user an image or video, for example, and the overlay can be rendered over, near, or otherwise positioned with respect to any text or other ...


3
Arnab Dhua, Sunil Ramesh: Contour detection and image classification. A9 com, Novak Druce Connolly Bove Quigg, April 16, 2013: US08422782 (18 worldwide citation)

Systems and methods are provided for creating contour images that represent the contour of objects reflected in images, calculating contour histogram descriptors of the contour images, and classifying images based in part on the histogram descriptors of the contour images. For example, a contour ima ...


4
Arnab Dhua, Sunil Ramesh: Processing and comparing images. A9 com, Novak Druce Connolly Bove Quigg, May 21, 2013: US08447107 (17 worldwide citation)

Systems and methods are provided for calculating and using histogram descriptors to compare images and to identify visually similar content. According to at least one embodiment, multiple histograms descriptors are calculated for individual images of a collection of content. These histogram descript ...


5
Sunil Ramesh, Arnab S Dhua, Supratik Bhattacharyya, Gurumurthy D Ramkumar, Gautam Bhargava: Content search with category-aware visual similarity. Amazon Technologies, Novak Druce Connolly Bove Quigg, March 24, 2015: US08990199 (16 worldwide citation)

Visual incongruity in search result sets may be reduced at least in part by searching an optimized visually significant subset of a category tree that categorizes a collection of content. The category tree may be optimized at build time at least in part by pruning with respect to visual coherence an ...


6
Sunil Ramesh, Arnab S Dhua, Max Delgadillo, Raghavan Manmatha: Scalable tree builds for content descriptor search. A9 com, Novak Druce Connolly Bove Quigg, June 17, 2014: US08756216 (9 worldwide citation)

Multiple paths of an index tree may be traversed to discover a set of content descriptors that are match candidates for a set of query descriptors. A size of the set of candidate content descriptors may be optimized, for example, to reduce false positive matching errors, query latencies and/or index ...


7
Keshav Menon, Max Delgadillo, Sunil Ramesh, Gd Ramkumar: Method and system for image matching. A9 com, Novak Druce Connolly Bove Quigg, May 27, 2014: US08738647 (7 worldwide citation)

The present invention provides a method and system for image matching. The method includes receiving a query image at a query-server. Further, the method includes, sending a request to one or more image-matching servers of a set of distributed image-matching servers to conduct an image-search corres ...


8
Derek Cole Singer, Sunil Ramesh, Sebastian Lehmann, Andrea C Steves, Nathan John Condie: Product image information extraction. Amazon Technologies, Lowenstein Sandler, January 28, 2014: US08639036 (7 worldwide citation)

A system and method for receiving an image of a product's packaging and extracting information (e.g., a set of facts) associated with a product from the image. The extracted information associated with the product may be stored in an attribute data store and used to populate an online catalog. In ad ...


9
Sunil Ramesh, Arnab S Dhua, Max Delgadillo, Raghavan Manmatha: Scalable tree-based search of content descriptors. A9 com, Novak Druce Quigg, January 8, 2013: US08352483 (6 worldwide citation)

Multiple paths of an index tree may be traversed to discover a set of content descriptors that are match candidates for a set of query descriptors. A size of the set of candidate content descriptors may be optimized, for example, to reduce false positive matching errors, query latencies and/or index ...


10
Arnab Sanat Kumar Dhua, Sunil Ramesh: Contour detection and image classification. A9 com, Novak Druce Connolly Bove Quigg, March 25, 2014: US08682071 (4 worldwide citation)

Systems and methods are provided for creating contour images that represent the contour of objects reflected in images, calculating contour histogram descriptors of the contour images, and classifying images based in part on the histogram descriptors of the contour images. For example, a contour ima ...