Application of image recognition in GIS

Kaiyu Xu; Zhijing Xu; Huayao Zheng

doi:10.1117/12.521518

2 September 2003 Application of image recognition in GIS

Kaiyu Xu, Zhijing Xu, Huayao Zheng

Proceedings Volume 5253, Fifth International Symposium on Instrumentation and Control Technology; (2003) https://doi.org/10.1117/12.521518
Event: Fifth International Symposium on Instrumentation and Control Technology, 2003, Beijing, China

Abstract

In view of the existing issues on extraction of GIS vector data from maps, we propose an image recognition method based on wavelet transformation. Using the method, we first made the wavelet transformation of a color urban traffic map and took the value near zero points of the wavelet coefficient, and then, color model transformation was adopted to obtain a gray image. Afterwards, an appropriate threshold was chosen and the gray image was transformed into a bilevel image. In the end, the erosion algorithm in the mathematical morphology was used to thin the image in order to identify the road information. The experimental result showed that the method could be used to effectively identify the road information from an urban traffic map.

Citation Download Citation

Kaiyu Xu, Zhijing Xu, and Huayao Zheng "Application of image recognition in GIS", Proc. SPIE 5253, Fifth International Symposium on Instrumentation and Control Technology, (2 September 2003); https://doi.org/10.1117/12.521518

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