講演名 2006-01-28
A Wavelet-based Multiresolution Medical Image Registration Strategy Combining Mutual Information with Spatial Information
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抄録(和)
抄録(英) Mutual information is a widely-used metric in medical image registration, which achieves good results; however it can lead to misregistration because of the absence of spatial information. In this paper, we propose a wavelet-based multiresolution medical image registration strategy combining mutual information with spatial information. In such a strategy, wavelet transform is adopted to decompose original 3D images into different resolution layers, different from the traditional Gaussian pyramid multiresolution method. In each layer, low-frequency coefficients LLL is used to compute mutual information; and high-frequency coefficients HLL, LHL and LLH are used to compute the metric of spatial information. By a linear addition, a hybrid metric is formed to combine both mutual information and spatial information. The advantage of the proposed algorithm is that the half-resolution images and the high frequency images can be obtained only in one step with the help of wavelet transform. This reduces the processing time a lot. Additionally, experiments show that the hybrid metric works better than mutual information in CT-MR registration problems.
キーワード(和)
キーワード(英) Medical Image Registration / Mutual Information / Wavelet Transform / Multiresolution
資料番号 MI2005-138
発行日

研究会情報
研究会 MI
開催期間 2006/1/21(から1日開催)
開催地(和)
開催地(英)
テーマ(和)
テーマ(英)
委員長氏名(和)
委員長氏名(英)
副委員長氏名(和)
副委員長氏名(英)
幹事氏名(和)
幹事氏名(英)
幹事補佐氏名(和)
幹事補佐氏名(英)

講演論文情報詳細
申込み研究会 Medical Imaging (MI)
本文の言語 ENG
タイトル(和)
サブタイトル(和)
タイトル(英) A Wavelet-based Multiresolution Medical Image Registration Strategy Combining Mutual Information with Spatial Information
サブタイトル(和)
キーワード(1)(和/英) / Medical Image Registration
第 1 著者 氏名(和/英) / Rui Xu
第 1 著者 所属(和/英)
College of Information and Science, Ristumeikan University
発表年月日 2006-01-28
資料番号 MI2005-138
巻番号(vol) vol.105
号番号(no) 580
ページ範囲 pp.-
ページ数 4
発行日