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摘 要：遮挡线索增强的最大密度投影算法（OEMIP）旨在解决最大密度投影法#br# （MIP）不能正确表达遮挡线索的问题，它包括两个步骤：首先使用K-Means 聚类算法从#br# MIP 结果图像中自动提取结构特征；然后根据结构特征自适应调节MIP 绘制过程以正确表#br# 达遮挡线索。此外，引入绘制优先级以避免重要特征被次要特征严重遮挡，并给出绘制优先#br# 级的自动设置算法。多个体数据的测试结果表明OEMIP 能显著增强遮挡线索，且能实现实#br# 时交互。#br# 关 键 词：体数据可视化；最大密度投影；遮挡线索；结构特征
Abstract: Occlusion enhanced maximum intensity projection is to solve the problem that#br# maximum intensity projection can?t convey occlusion cue correctly. It consists of two steps:#br# firstly, K-Means clusting algorithm is used to extract structure features from MIP result images#br# automatically; and then it adjusts rendering process adaptively according to structure features.#br# Furthermore, the concept of rendering priority is introduced to avoid important features being#br# occluded badly by non-important features, and an algorithm is provided to set rendering priority of#br# structure feature automatically. Test result of several volume data indicates that OEMIP can#br# enhance occlusion cue significantly, and rendering speed is enough for real-time interaction.#br# Key words: volume visualization; maximum intensity projection; occlusion cue; structure#br# feature
摘要： 遮挡线索增强的最大密度投影算法（OEMIP）旨在解决最大密度投影法
（MIP）不能正确表达遮挡线索的问题，它包括两个步骤：首先使用K-Means 聚类算法从
MIP 结果图像中自动提取结构特征；然后根据结构特征自适应调节MIP 绘制过程以正确表
达遮挡线索。此外，引入绘制优先级以避免重要特征被次要特征严重遮挡，并给出绘制优先
级的自动设置算法。多个体数据的测试结果表明OEMIP 能显著增强遮挡线索，且能实现实
时交互。
