An automatic image-map alignment algorithm based on Mutual Information and Hilbert scan

Li Tian*, Sei Ichiro Kamata


研究成果: Conference article査読

1 被引用数 (Scopus)


An algorithm for automatic image-map alignment problem using a new similarity measure named Edge-Based Code Mutual Information (EBCMI) and Hilbert scan is presented in this study. Because image and map are very different in their representations, the normal Mutual Information (MI) using the intensity in traditional alignment method may result in misalignment. To solve the problem, codes which are robust to the differences between the image-map pairs are constructed and Mutual Information of the codes is computed as the similarity measure for the alignment. We convert the 3-D transformation search space in alignment to a 1-D search space sequence by using 3-D Hilbert Scan. A new search strategy is also proposed on the 1-D search space sequence. The experimental results show that the proposed EBCMI outperformed the normal MI and some other similarity measures and the proposed search strategy gives flexibility between efficiency and accuracy for automatic imagemap alignment task.

ジャーナルEuropean Signal Processing Conference
出版ステータスPublished - 2008 12月 1
イベント16th European Signal Processing Conference, EUSIPCO 2008 - Lausanne, Switzerland
継続期間: 2008 8月 252008 8月 29

ASJC Scopus subject areas

  • 信号処理
  • 電子工学および電気工学