公开(公告)号：US08648948B2

公开(公告)日：2014-02-11

申请号：US12570679

申请日：2009-09-30

申请人： Conor S. Rafferty ,  Clifford A. King ,  Michael Philip Decelle ,  Jason Y. Sproul ,  Bryan D. Ackland

发明人： Conor S. Rafferty ,  Clifford A. King ,  Michael Philip Decelle ,  Jason Y. Sproul ,  Bryan D. Ackland

IPC分类号： H04N5/335

CPC分类号： H04N5/35563

摘要： Imaging arrays comprising at least two different imaging pixel types are described. The different imaging pixel types may differ in their light sensitivities and/or light saturation levels. Methods of processing the output signals of the imaging arrays are also described, and may produce images having a greater dynamic range than would result from an imaging array comprising only one of the at least two different imaging pixel types.

摘要翻译： 描述包括至少两个不同成像像素类型的成像阵列。 不同的成像像素类型在其光敏度和/或光饱和度方面可能不同。 还描述了处理成像阵列的输出信号的方法，并且可以产生具有比由仅包括至少两种不同成像像素类型中的一种的成像阵列产生的动态范围更大的图像。

公开(公告)号：US20110074995A1

公开(公告)日：2011-03-31

申请号：US12570679

申请日：2009-09-30

申请人： Conor S. Rafferty ,  Clifford A. King ,  Michael Philip Decelle ,  Jason Y. Sproul ,  Bryan D. Ackland

发明人： Conor S. Rafferty ,  Clifford A. King ,  Michael Philip Decelle ,  Jason Y. Sproul ,  Bryan D. Ackland

IPC分类号： H04N5/335

CPC分类号： H04N5/35563

摘要： Imaging arrays comprising at least two different imaging pixel types are described. The different imaging pixel types may differ in their light sensitivities and/or light saturation levels. Methods of processing the output signals of the imaging arrays are also described, and may produce images having a greater dynamic range than would result from an imaging array comprising only one of the at least two different imaging pixel types.

摘要翻译： 描述包括至少两个不同成像像素类型的成像阵列。 不同的成像像素类型在其光敏度和/或光饱和度方面可能不同。 还描述了处理成像阵列的输出信号的方法，并且可以产生具有比由仅包括至少两种不同成像像素类型中的一种的成像阵列产生的动态范围更大的图像。

公开(公告)号：US20090237498A1

公开(公告)日：2009-09-24

申请号：US12401009

申请日：2009-03-10

申请人： Mark D. Modell ,  David W. Robertson ,  Jason Y. Sproul

发明人： Mark D. Modell ,  David W. Robertson ,  Jason Y. Sproul

IPC分类号： H04N7/18

CPC分类号： A61B1/045 ,  A61B1/00009 ,  A61B1/00165 ,  G02B27/46 ,  G06T5/002 ,  G06T5/10 ,  G06T5/20 ,  G06T2207/10068 ,  G06T2207/20056 ,  G06T2207/30028 ,  H04N9/735 ,  H04N17/002 ,  H04N2005/2255

摘要： A method according to an embodiment of the invention includes receiving a first optical image from an endoscope having a plurality of imaging fibers. A spatial frequency is identified that is associated with the plurality of imaging fibers. A second optical image is received from the endoscope. The spatial frequency is filtered from the second optical image. A method according to another embodiment includes producing an optical image of at least a portion of a body lumen using a fiberscope. The optical image is transmitted to a video camera coupled to the fiberscope. A honeycomb pattern associated with a fiber bundle of the fiberscope is removed from the optical image. In some embodiments, the honeycomb pattern can be removed in substantially real time. In some embodiments, prior to producing the optical image, a calibration cap is coupled to the fiberscope and used in a calibration process.

摘要翻译： 根据本发明的实施例的方法包括从具有多个成像光纤的内窥镜接收第一光学图像。 识别与多个成像光纤相关联的空间频率。 从内窥镜接收第二光学图像。 从第二光学图像滤波空间频率。 根据另一实施例的方法包括使用纤维内窥镜产生至少一部分体腔的光学图像。 光学图像被传送到耦合到纤维内窥镜的摄像机。 从光学图像中去除与纤维内窥镜的纤维束相关联的蜂窝状图案。 在一些实施例中，可以基本上实时地去除蜂窝图案。 在一些实施例中，在制造光学图像之前，将校准盖耦合到纤维内窥镜并在校准过程中使用。

公开(公告)号：US07349574B1

公开(公告)日：2008-03-25

申请号：US10685126

申请日：2003-10-14

申请人： Charles G. Sodini ,  Jason Y. Sproul ,  Edward T. Chang

发明人： Charles G. Sodini ,  Jason Y. Sproul ,  Edward T. Chang

IPC分类号： G06K9/00

CPC分类号： G06T5/40 ,  G06T5/009 ,  H04N5/21 ,  H04N5/2351 ,  H04N5/2353 ,  H04N5/35527 ,  H04N5/361 ,  H04N5/3675 ,  H04N5/374 ,  H04N9/735

摘要： A system and method process non-linear image data, still or video, from a digital imager. Noise generated by analog-to-digital converters is filtered from a pixel of digital image data. Moreover, the effects of single pixel defects in the imager are eliminated by clamping a predetermined pixel of image data within the window when the value of the predetermined pixel is greater than a maximum value of the image data of neighboring pixels or less than a minimum value of the image data of neighboring pixels. Ripples in image data are reduced by eliminating the effects of single pixel defects before filtering for crosstalk caused by electrical crosstalk between sensor elements in an imager. Dark current is removed from image data generated by an imager by subtracting a fraction of a determined dark current value from all image data generated by the imager to compensate for nonlinearities in dark current across the imager. The image data is white balanced by creating a set of scalar color adjustments from determined average color values and constraining the set of scalar adjustments to plausible lighting conditions to prevent overcompensation on images having large regions of similar hue. Lastly, utilization of a fixed set of intensity levels is optimized by remapping and restreching the image data to create new luma values for each pixel.

摘要翻译： 系统和方法从数字成像器处理非线性图像数据，静止或视频。 由数字转换器产生的噪声从数字图像数据的像素滤波。 此外，当预定像素的值大于相邻像素的图像数据的最大值或小于最小值时，通过在窗口内夹持图像数据的预定像素来消除成像器中的单像素缺陷的影响 的相邻像素的图像数据。 通过在成像器中的传感器元件之间的电串扰引起的串扰过滤之前消除单像素缺陷的影响，减少图像数据中的纹波。 通过从由成像器生成的所有图像数据中减去确定的暗电流值的分数来补偿由成像器产生的图像数据中的暗电流，以补偿成像器两端的暗电流的非线性。 通过从确定的平均颜色值创建一组标量颜色调整并将标量调整的集合约束到合理的照明条件以防止对具有相似色调的大区域的图像的过度补偿，图像数据被白平衡。 最后，通过重新映射和修复图像数据来为每个像素创建新的亮度值来优化固定的强度级的利用。