计算机科学 ›› 2022, Vol. 49 ›› Issue (3): 204-210.doi: 10.11896/jsjkx.201100085
章晓庆1, 方建生1, 肖尊杰1, 陈浜2, RisaHIGASHITA3, 陈婉4, 袁进4, 刘江1,2
ZHANG Xiao-qing1, FANG Jian-sheng1, XIAO Zun-jie1, CHEN Bang2, Risa HIGASHITA3, CHEN Wan4, YUAN Jin4, LIU Jiang1,2
摘要: 白内障是导致视觉损害和致盲的主要眼病,眼前节光学相干断层成像技术(Anterior Segment Optical Coherence Tomography,AS-OCT)具有非接触、高分辨率、检查快速、客观定量化测量等特点,在临床上已经被广泛应用于眼病的诊断。目前缺乏基于眼前节OCT图像的核性白内障分类研究工作,为此提出了一种基于眼前节OCT图像的核性白内障分类算法。首先,利用自适应阈值方法、边缘检测 Canny 算法和手工校正相结合的方式从眼前节OCT图像中提取晶状体的核性区域;然后,基于图像强度和直方图的特征统计方法提取18个像素特征,并应用皮尔逊相关系数方法分析提取像素特征与核性白内障严重程度之间的相关性;最后,利用随机森林算法构建分类模型,从而得到核性白内障分类结果。在一个眼前节OCT图像数据集上的实验结果表明,所提算法对核性白内障严重程度的分类准确率和召回率分别达到了75.53%和74.04%,具有作为核性白内障临床诊断的定量分析参考工具的潜力。
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