瞳孔快速定位方法在眼震实时检测系统中的应用研究  

Application and research on fast pupil location method used in real-time nystagmus detecting system

作　　者：王萑[1] 史仪凯[1] 吴磊[1] 耶亚林[1,2] 

机构地区：[1]西北工业大学,西安710072 [2]西安通信学院,西安710106

出　　处：《光电子．激光》2009年第4期540-544,共5页Journal of Optoelectronics·Laser

基　　金：国家自然科学基金资助项目(50275125);陕西省科技计划课题资助项目(2005K16-G7(4))

摘　　要：为了对眼球震颤进行实时、无损的精确检测,本文研究出一种瞳孔快速定位的方法。该方法采用离散余弦变换、灰度拉伸、阈值分割以及数学形态学处理方法,对瞳孔进行定位,再采用辅助图片框法实时绘制瞳孔波动曲线。结果表明,该方法满足了检测系统对瞳孔定位的实时性、精确性要求,瞳孔波动曲线能够很好地反映被测者的眼球运动情况。该方法为眼震患者的眩晕判定提供了重要依据,进而对抗眩晕中药药效的评估及眼震的诊断具有很高的参考价值。To detect nystagmus accurately,in real-time and without damage,a fast pupil orientation method has been put forward.Discrete cosine transform(DCT),gray stretching,threshold segmentation and mathematical morphology methods were used to locate pupil exactly.Then,assistant picture-box method was used to draw the wave of pupil fluctuation in real-time.As can be seen from the results,this method could meet the requirement of accuracy and real-time performance.The fluctuation of pupil could reflect eye-movement o...

关 键 词：眼震 瞳孔定位 DCT变换 阈值分割 辅助图片框法 图像处理 

分 类 号：TN2[电子电信—物理电子学]