Analyzing tabular structures in expression recognition

Image analysis – Pattern recognition – Unconstrained handwriting

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C382S187000

Reexamination Certificate

active

07447360

ABSTRACT:
A mechanism for recognizing and inputting handwritten mathematical expressions into a computer by providing part of a multi-path framework is described. The part of the multi-path framework is tabular structure analysis component that is designed to determine tabular structures, such as ones defined by brackets, within handwritten mathematical expressions. A method for determining tabular structures in a handwritten mathematical expression includes determining whether a symbol representative of input strokes corresponds to a tabular structure associated with a mathematical expression. The tabular structure may be a matrix or multi-line expression. The method includes dividing input strokes into rows and columns and determining the existence of one or more brackets that define a tabular structure.

REFERENCES:
patent: 6694055 (2004-02-01), Wu
patent: 6766320 (2004-07-01), Wang et al.
Zanibbi, Richard, “Recognition of Mathematics Notation via Computer Using Baseline Structure”, Aug. 3, 2000, pp. 3-87.
Grune, Dick and Jacobs, Ceriel J.H., “Parsing Techniques—A Practical Guide,” printed from http://www.cs.vu.nl/˜dick/PTAPG.html, printed Jun. 20, 2005, 2 pages.
Earley, Jay, “An Efficient Context-Free Parsing Algorithm,” Communications of the ACM, vol. 13, No. 2, Feb. 1970, pp. 94-102.
Yu, Hua and Yang, Jie, “Rapid and Brief Communication, A direct LDA algorithm for high-dimensional data—with application to face recognition,” Pattern Recognition 34 (2001), pp. 2067-2070.
Jain, Anil K., Duin, Robert P.W., and Mao, Jianchang, “Statistical Pattern Recognition: A Review,” IEEE Transactions on Pattern Analysis and Machine Intelligence, vol. 22, No. 1, Jan. 2000, pp. 4-37.
Zanibbi, Richard, “Recognition of Mathematics Notation via Computer Using Baseline Structure,” Aug. 3, 2000, pp. 3-87.
Myers, C., Rabiner, L., and Rosenberg, A., “Performance Tradeoffs in Dynamic Time Warping Algorithms for Isolated Word Recognition,” IEEE Transactions on Acoustics, Speech, and Signal Processing, vol. ASSP-28, No. 6, Dec. 1980, pp. 623-635.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Analyzing tabular structures in expression recognition does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Analyzing tabular structures in expression recognition, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Analyzing tabular structures in expression recognition will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-4028399

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.