中文

Journal of Applied Sciences ›› 2010, Vol. 28 ›› Issue (3): 297-300.

• Signal and Information Processing • Previous Articles     Next Articles

Uniform Color Processing of Scanned Topographic Maps Using FFTW-Based Retinex

FU Zhong-liang1;2, TONG Chun-ya1, SHAO Shi-wei1   

  1. 1. School of Remote Sensing and Information Engineering, Wuhan University, Wuhan 430079, China
    2. State Key Laboratory of Information Engineering in Surveying, Mapping and Remote Sensing, Wuhan University, Wuhan 430079, China
  • Received:2010-02-01 Revised:2010-03-31 Online:2010-05-21 Published:2010-05-21

PDF

3619

Cited

1

Abstract:

This paper analyzes the appearance of creases and light non-uniformity in scanned topographic maps, and applies the Retinex theory to process the maps. A processing method and a single-scale Retinex algorithm (SSR) are proposed based on the faster Fourier transform in the west (FFTW) and the Retinex theory. Experimental results show that the proposed method can overcome disadvantages of the mathematical model and effectively remove creases and light non-uniformity in scanned topographic maps.

Key words: scanned topographic maps, single-scale Retinex (SSR), color balance, faster Fourier transform in the west (FFTW)

CLC Number: