TY - GEN
T1 - On-line handwritten formula recognition using hidden Markov models and context dependent graph grammars
AU - Kosmala, Andreas
AU - Rigoll, Gerhard
AU - Lavirotte, Stéphane
AU - Pottier, Loïc
N1 - Publisher Copyright:
© 1999 IEEE.
PY - 1999
Y1 - 1999
N2 - This paper presents an approach for the recognition of on-line handwritten mathematical expressions. The hidden Markov model (HMM) based system makes use of simultaneous segmentation and recognition capabilities, avoiding a crucial segmentation during pre-processing. With the segmentation and recognition results, obtained from the HMM recognizer it is possible to analyze and interpret the spatial two-dimensional arrangement of the symbols. We use a graph grammar approach for the structure recognition, also used in off-line recognition process, resulting in a general tree-structure of the underlying input-expression. The resulting constructed tree can be translated to any desired syntax (for example: Lisp, KTEX, and OpenMath).
AB - This paper presents an approach for the recognition of on-line handwritten mathematical expressions. The hidden Markov model (HMM) based system makes use of simultaneous segmentation and recognition capabilities, avoiding a crucial segmentation during pre-processing. With the segmentation and recognition results, obtained from the HMM recognizer it is possible to analyze and interpret the spatial two-dimensional arrangement of the symbols. We use a graph grammar approach for the structure recognition, also used in off-line recognition process, resulting in a general tree-structure of the underlying input-expression. The resulting constructed tree can be translated to any desired syntax (for example: Lisp, KTEX, and OpenMath).
UR - http://www.scopus.com/inward/record.url?scp=84937481220&partnerID=8YFLogxK
U2 - 10.1109/ICDAR.1999.791736
DO - 10.1109/ICDAR.1999.791736
M3 - Conference contribution
AN - SCOPUS:84937481220
T3 - Proceedings of the International Conference on Document Analysis and Recognition, ICDAR
SP - 107
EP - 110
BT - Proceedings of the 5th International Conference on Document Analysis and Recognition, ICDAR 1999
PB - IEEE Computer Society
T2 - 5th International Conference on Document Analysis and Recognition, ICDAR 1999
Y2 - 20 September 1999 through 22 September 1999
ER -