Physical Sciences and Mathematics Commons^™

Scale Space Technique For Word Segmentation In Handwritten Manuscripts, R. Manmatha, Nitin Srimal

R. Manmatha

Indexing large archives of historical manuscripts, like the papers of George Washington, is required to allow rapid perusal by scholars and researchers who wish to consult the original manuscripts. Presently, such large archives are indexed manually. Since optical character recognition (OCR) works poorly with handwriting, a scheme based on matching word images called word spotting has been suggested previously for indexing such documents. The important steps in this scheme are segmentation of a document page into words and creation of lists containing instances of the same word by word image matching.

We have developed a novel methodology for segmenting handwritten …

Multimedia Information Retrieval At The Center For Intelligent Information Retrieval, R. Manmatha

R. Manmatha

Building the digital libraries of the future will require a number of different component technologies including the ability to retrieve multi-media information. This paper will describe progress in this area at the Center for Intelligent Information Retrieval (CIIR). This includes: 1) Multi-modal retrieval using appearance based image retrieval and text retrieval. This work has been applied to a large database of trademarks containing image and text data from the US Patent and Trademark Office. 68,000 trademarks may be searched using either image retrieval or image and text retrieval while 615,000 trademarks may be searched using text retrieval. 2) Indexing handwritten …

Indexing Flower Patent Images Using Domain Knowledge, Madirakshi Das, R. Manmatha, Edward M. Riseman

R. Manmatha

A new approach to indexing a specialized database by utilizing the color and spatial domain knowledge available for the database is described. This approach is illustrated by using it to provide a solution to the problem of indexing images of flowers for searching a flower patents database by color. The flower region is isolated from the background by using an automatic iterative segmentation algorithm with domain knowledge-driven feedback. The color of the flower is defined by the color names present in the flower region and their relative proportions. The database can be queried by example and by color names. The …

Multi-Modal Retrieval Of Trademark Images Using Global Similarity, S Ravela, R. Manmatha

R. Manmatha

In this paper a system for multi-modal retrieval of trademark images is presented. Images are characterized and retrieved using associated text and visual appearance. A user initiates retrieval for similar trademarks by typing a text query. Subsequent searches can be performed by visual appearance or using both appearance and text information. Textual information associated with trademarks is searched using the INQUERY search engine. Images are searched visually using a method for global image similarity by appearance developed in this paper. Images are filtered with Gaussian derivatives and geometric features are computed from the filtered images. The geometric features used here …