针对液晶人眼像差校正仪拍摄的小视场视网膜血管图像的拼接算法进行了研究.通过对传统的Harris特征角点算法的改进,解决了该算法在低对比度、小视场视网膜血管图像处理中定位精度较差、需要三次高斯平滑而导致计算量相对较大以及对噪声比较敏感的缺点.然后将配准好的图像进行融合,实现了视网膜血管图像快速、准确的无缝拼接,扩大了视网膜的观测区域,为医务人员的诊治判断提供了更准确的信息.
参考文献
[1] | Babcock H W.The possibility of compensating astronomical seeing[J].Publ Astron.Soc.Pac.,1953,65:229-236. |
[2] | Ling N,Zhang Y,Rao X,et al.Small table top adaptive optical systems for human retinal imaging[J].SPIE,2002,4825:99-108. |
[3] | Liang J,Grimm B,Goei Z S,et al.Objective measurement of the wave aberration of the human eye with the use of a Hartman-Shark wave-front sensor[J].J.Opt.Soc.Am.A,1994,11:1949-1957. |
[4] | Fernandeze J,Artal P.Membrane deformable mirror for adaptive optics performance limits in visual optics[J].Optics Express,2003,11 (9):1056-1069. |
[5] | 曹正林,廖文和,沈建新.Zernike多项式拟合人眼波前像差的一种新算法[J].光学精密工程.2006,14(2):308-314. |
[6] | 刘伯晗,张健,吴丽莹.液晶空间光调制器的纯相位调制特性研究[J].光学精密工程,2006,14(2):213-217. |
[7] | Cao Z L,Xuan L,Hu L F,et al.Effects of the space-bandwidth product on the liquid-crystal kinoform[J].Opt.Express,2005,13(14):5186-5191. |
[8] | Cao Z L,Mu Q Q,Dovillaire G,et al.Effect of the twisted alignment on the liquid crystal wave-front corrector[J].Liquid Crystals,2007,34(10):1227-1232. |
[9] | Chutatape O,Guo L F.A modified Hough transform for line detection and its performance[J].Pattern Recognition,1999,32:181-192. |
[10] | Illingworth H,Kittler J.A survey on the Hough transforms[J].Computer Vis Graph Image Processing,1998,44:87-116. |
[11] | 王力,唐琎,许海柱.一种基于Harris角点检测的快速瞳孔定位方法[J].液晶与显示,2008,23(1):87-90. |
[12] | 黄彬彬,唐琎.一种新的人脸图像中眼睛定位方法[J].液晶与显示,2009,24(2):278-282. |
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