-
公开(公告)号:US20110019150A1
公开(公告)日:2011-01-27
申请号:US12801689
申请日:2010-06-21
申请人: Thomas Schuhrke , Günter Meckes , Stefan Gräber , Keith Thornton
发明人: Thomas Schuhrke , Günter Meckes , Stefan Gräber , Keith Thornton
CPC分类号: A61B3/11 , A61B3/111 , A61B3/112 , A61B3/14 , G06K9/00604
摘要: A method determines the position and/or radius of the limbus and/or the position and/or radius of the pupil of a patient eye. In the method, an image of the patient eye is obtained and a plurality of different ring-shaped comparison objects having respective radii and respective centers are provided. The image is correlated with the plurality of comparison objects to yield a local best match between the image and the comparison objects when there is a coincidence of one of the ring-shaped comparison objects and a ring-shaped jump in brightness in the image having the same radius and the same center. The comparison objects having a local best match with the image are determined. Thereafter, the position of the center of the comparison object having a local best match with the image is selected as the position of the center of the limbus and/or the position of the center of the pupil.
摘要翻译: 方法确定角膜缘的位置和/或半径和/或患者眼睛的瞳孔的位置和/或半径。 在该方法中,获得患者眼睛的图像,并且提供具有各自的半径和各个中心的多个不同的环形比较对象。 该图像与多个比较对象相关联,以便当存在一个环形比较对象之间的一个并且在具有该形状的比较对象的图像中的亮度的环形跳跃时,在图像和比较对象之间产生局部最佳匹配 相同的半径和相同的中心。 确定与图像具有局部最佳匹配的比较对象。 此后,选择与图像具有局部最佳匹配的比较对象的中心的位置作为角膜缘中心的位置和/或瞳孔中心的位置。
-
公开(公告)号:US20100069759A1
公开(公告)日:2010-03-18
申请号:US12462036
申请日:2009-07-28
申请人: Thomas Schuhrke , Guenter Meckes , Joachim Steffen , Hans-Joachim Miesner , Frank Rudolph , Werner Nahm
发明人: Thomas Schuhrke , Guenter Meckes , Joachim Steffen , Hans-Joachim Miesner , Frank Rudolph , Werner Nahm
CPC分类号: A61B5/0275 , A61B5/0261 , A61B5/7207 , G06T5/50 , G06T7/33 , G06T2207/10056 , G06T2207/10064 , G06T2207/30104
摘要: A method for the quantitative representation of the blood flow in a tissue or vascular region is based on the signal of a contrast agent injected into the blood. Several individual images of the signal emitted by the tissue or vascular region are recorded and stored at successive points in time. For image areas of the individual images, the respective intensities of different points in time are compared and the maximum intensities of the signals are determined for these image areas. The maximum intensities are represented for these image areas.
摘要翻译: 用于定量表示组织或血管区域中的血液流动的方法基于注射到血液中的造影剂的信号。 由组织或血管区域发射的信号的几个单独图像在连续的时间点被记录并存储。 对于各个图像的图像区域,比较不同时间点的相应强度,并且为这些图像区域确定信号的最大强度。 对于这些图像区域表示最大强度。
-