發(fā)布時(shí)間：2018-03-28 17:17

  本文選題：計(jì)算機(jī)輔助診斷　切入點(diǎn)：氣管樹　出處：《哈爾濱工業(yè)大學(xué)學(xué)報(bào)》2017年05期

【摘要】：為提高肺部支氣管骨架線的提取效率,提出并使用一種基于look-up-table(LUT)的腐蝕細(xì)化算法.分析建立腐蝕模型,并根據(jù)該模型優(yōu)化建立了LUT,以該LUT為依據(jù)通過(guò)索引查找對(duì)原始數(shù)據(jù)進(jìn)行快速腐蝕細(xì)化,對(duì)得到的腐蝕結(jié)果進(jìn)行剪枝處理以得到最終的骨架線.實(shí)驗(yàn)結(jié)果表明:提取過(guò)程中LUT的應(yīng)用從根本上降低了腐蝕細(xì)化中判斷的復(fù)雜度,將復(fù)雜的簡(jiǎn)單點(diǎn)判斷問(wèn)題轉(zhuǎn)化為L(zhǎng)UT中的查詢問(wèn)題,從而極大地優(yōu)化了腐蝕細(xì)化中關(guān)鍵的腐蝕過(guò)程.相比傳統(tǒng)方法,基于LUT的腐蝕細(xì)化算法顯著提高了骨架線的提取速度,較傳統(tǒng)細(xì)化法提速近22.95倍.
[Abstract]:In order to improve the extraction efficiency of lung bronchus skeleton, a corrosion thinning algorithm based on look-up-tableLUT-based was proposed and established. According to the model, the LUTs are optimized. According to the LUT, the original data can be quickly corroded and refined by index lookup. The experimental results show that the application of LUT in the extraction process can fundamentally reduce the complexity of judgment in corrosion refinement. The complex simple point judgment problem is transformed into a query problem in LUT, which greatly optimizes the critical corrosion process in corrosion thinning. Compared with the traditional method, the LUT based corrosion thinning algorithm improves the extraction speed of skeleton line significantly. The speed of the method is 22.95 times faster than that of the traditional refinement method.
【作者單位】： 上海交通大學(xué)生物醫(yī)學(xué)工程學(xué)院;
【基金】：國(guó)家自然科學(xué)基金(61271318)
【分類號(hào)】：R56;R734.2;TP301.6
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本文編號(hào)：1677282