PT Journal
AU Marçal Rusiñol
   Josep Llados
TI A Performance Evaluation Protocol for Symbol Spotting Systems in  Terms of Recognition and Location Indices
SO International Journal on Document Analysis and Recognition
JI IJDAR
PY 2009
BP 83
EP 96
VL 12
IS 2
DE Performance evaluation; Symbol Spotting; Graphics Recognition
AB Symbol spotting systems are intended to retrieve regions of interest from a document image database where the queried symbol is likely to be found. They shall have the ability to recognize and locate graphical symbols in a single step. In this paper, we present a set of measures to evaluate the performance of a symbol spotting system in terms of recognition abilities, location accuracy and scalability. We show that the proposed measures allow to determine the weaknesses and strengths of different methods. In particular we have tested a symbol spotting method based on a set of four different off-the-shelf shape descriptors.
ER