Abstract

Raster maps are widely available on the Internet. Valuable information such as street lines and labels, however, are all hidden in the raster format. To utilize the information, it is important to recognize the line and character pixels for further processing. This paper presents a novel algorithm using 2-D Discrete Cosine Transformation (DCT) coefficients and Support Vector Machines (SVM) to classify the pixels of lines and characters on raster maps. The experiment results show that our algorithm achieves 98% precision and 85% recall in classifying the line pixels and 83% precision and 96% recall in classifying the character pixels on a variety of raster map sources.

Date

August 20, 2006

Authors

Yao-Yi Chiang, Craig A Knoblock

Conference

18th International Conference on Pattern Recognition (ICPR'06)

Volume

2

Pages

1034-1037

Publisher

IEEE