公开(公告)号：US08781182B2

公开(公告)日：2014-07-15

申请号：US12416666

申请日：2009-04-01

申请人： Nailong Wu

发明人： Nailong Wu

IPC分类号： G06K9/00 ,  G06K9/48 ,  G06K9/40 ,  G21K1/02

CPC分类号： G01N23/046 ,  A61B6/00 ,  G01N2223/419 ,  G06T7/12 ,  G06T7/181 ,  G06T2207/10116 ,  G06T2207/20061

摘要： A process for detecting the edges of collimator blades in digital radiography images in the first pass detects the edges of the collimator blades using original image, and the in the second pass repeats edge detection using an image enhanced by a histogram matching technique, for example. The edge detection using an enhanced image may also be repeated any number of times in cases of complex anatomy or when selected radiographic techniques does do not provide sufficient imaging data. The results of the second pass, or the collection of the results of multiple second passes, are then combined with the result from the first pass to form a list of the potential blade edge candidates. A desirable number of edges are then selected from the combined list to form a polygon which encloses the target area of the image, thereby providing the shutter area.

摘要翻译： 在第一遍的数字放射线照相图像中检测准直器叶片的边缘的处理使用原始图像检测准直器刀片的边缘，并且在第二遍中使用例如通过直方图匹配技术增强的图像重复边缘检测。 使用增强图像的边缘检测在复杂解剖结构的情况下或者当选择的放射照相技术不提供足够的成像数据时也可以重复任意次数。 然后将第二遍的结果或多次第二遍的结果的收集与来自第一遍的结果组合以形成潜在的叶片边缘候选者的列表。 然后从组合列表中选择期望数量的边缘以形成包围图像的目标区域的多边形，从而提供快门区域。

公开(公告)号：US20090245466A1

公开(公告)日：2009-10-01

申请号：US12416666

申请日：2009-04-01

申请人： Nailong Wu

发明人： Nailong Wu

IPC分类号： H05G1/64

CPC分类号： G01N23/046 ,  A61B6/00 ,  G01N2223/419 ,  G06T7/12 ,  G06T7/181 ,  G06T2207/10116 ,  G06T2207/20061

摘要： A process for detecting the edges of collimator blades in digital radiography images in the first pass detects the edges of the collimator blades using original image, and the in the second pass repeats edge detection using an image enhanced by a histogram matching technique, for example. The edge detection using an enhanced image may also be repeated any number of times in cases of complex anatomy or when selected radiographic techniques does do not provide sufficient imaging data. The results of the second pass, or the collection of the results of multiple second passes, are then combined with the result from the first pass to form a list of the potential blade edge candidates. A desirable number of edges are then selected from the combined list to form a polygon which encloses the target area of the image, thereby providing the shutter area.

摘要翻译： 在第一遍的数字放射线照相图像中检测准直器叶片的边缘的处理使用原始图像检测准直器刀片的边缘，并且在第二遍中使用例如通过直方图匹配技术增强的图像重复边缘检测。 使用增强图像的边缘检测在复杂解剖结构的情况下或者当选择的放射照相技术不提供足够的成像数据时也可以重复任意次数。 然后将第二遍的结果或多次第二遍的结果的收集与来自第一遍的结果组合以形成潜在的叶片边缘候选者的列表。 然后从组合列表中选择期望数量的边缘以形成包围图像的目标区域的多边形，从而提供快门区域。