Dear Editor,I am Rosa Gutiérrez Bonet,former ophthalmology resident at Puerta de Hierro University Hospital,Madrid,Spain.I write to present four cases of cortical blindness(CB)after bilateral lung transplant(L...Dear Editor,I am Rosa Gutiérrez Bonet,former ophthalmology resident at Puerta de Hierro University Hospital,Madrid,Spain.I write to present four cases of cortical blindness(CB)after bilateral lung transplant(LT).展开更多
Dear Sir,I am Dr.Daniel Ting,from the Department of Ophthalmology,Singapore National Eye Centre,Singapore.I write to present a case of a surprising significant visual improvement following a prolonged 5-month retained...Dear Sir,I am Dr.Daniel Ting,from the Department of Ophthalmology,Singapore National Eye Centre,Singapore.I write to present a case of a surprising significant visual improvement following a prolonged 5-month retained subfoveal perfluorocarbon liquid.Retained perfluorocarbon liquid(PFCL)has been shown to cause decreased visual acuity,retinal pigment epithelial(RPE)toxicity,retinal degeneration and gravity deformation ,展开更多
为提高移动机器人的跟随精度,对深度相机(RGB-D相机)测距进行研究,提出一种基于MRSD(Mask R-CNN and S2R-DepthNet)的移动机器人跟随系统。引入实例分割算法(Mask R-CNN)获取行人的前景掩膜;以掩膜为指导从深度图像中获取准确的行人区...为提高移动机器人的跟随精度,对深度相机(RGB-D相机)测距进行研究,提出一种基于MRSD(Mask R-CNN and S2R-DepthNet)的移动机器人跟随系统。引入实例分割算法(Mask R-CNN)获取行人的前景掩膜;以掩膜为指导从深度图像中获取准确的行人区域深度像素,引入深度估计算法(S2R-DepthNet)从彩色图像中推理深度图像以替换深度传感器引起的无效深度像素,提高测距的精度;建立基于Sage-Husa自适应滤波(SHAKF)的测距模型,提高量测信息异常情况下的测距鲁棒性,实现稳定跟随。实验结果表明,该方法能以设定距离准确跟随前方行人。展开更多
文摘Dear Editor,I am Rosa Gutiérrez Bonet,former ophthalmology resident at Puerta de Hierro University Hospital,Madrid,Spain.I write to present four cases of cortical blindness(CB)after bilateral lung transplant(LT).
文摘Dear Sir,I am Dr.Daniel Ting,from the Department of Ophthalmology,Singapore National Eye Centre,Singapore.I write to present a case of a surprising significant visual improvement following a prolonged 5-month retained subfoveal perfluorocarbon liquid.Retained perfluorocarbon liquid(PFCL)has been shown to cause decreased visual acuity,retinal pigment epithelial(RPE)toxicity,retinal degeneration and gravity deformation ,
基金Supported by National Natural Science Foundation of P.R.China(50405046,60605028)Shanghai Project of International Cooperation(045107031)the Program for Excellent Young Teachers of Shanghai(04YOHB094)
文摘为提高移动机器人的跟随精度,对深度相机(RGB-D相机)测距进行研究,提出一种基于MRSD(Mask R-CNN and S2R-DepthNet)的移动机器人跟随系统。引入实例分割算法(Mask R-CNN)获取行人的前景掩膜;以掩膜为指导从深度图像中获取准确的行人区域深度像素,引入深度估计算法(S2R-DepthNet)从彩色图像中推理深度图像以替换深度传感器引起的无效深度像素,提高测距的精度;建立基于Sage-Husa自适应滤波(SHAKF)的测距模型,提高量测信息异常情况下的测距鲁棒性,实现稳定跟随。实验结果表明,该方法能以设定距离准确跟随前方行人。