公开(公告)号：US07411194B1

公开(公告)日：2008-08-12

申请号：US11594028

申请日：2006-11-08

申请人： Jonathan Everett ,  John A. Gagnon ,  Athanasios Pashos ,  Roberto Rodriguez ,  Richard Wolfe

发明人： Jonathan Everett ,  John A. Gagnon ,  Athanasios Pashos ,  Roberto Rodriguez ,  Richard Wolfe

IPC分类号： H01L31/00

CPC分类号： B60R11/04 ,  H04N5/33 ,  H04N5/3656

摘要： An aviation vision apparatus. Its purpose assists a pilot's ability to fly an aircraft by providing increased visibility. The apparatus features an uncooled IR sensor for vision enhancement. An integrated window assembly is provided which permits the sensor to obtain its imagery. The apparatus also has an integrated aerodynamic enclosure. The apparatus features electronics responsible for window assembly window control functions and IR sensor control. The apparatus is a single line replaceable unit that receives control commands from the aircraft's head-down display or other control modules. The unit also provides for the video display.

摘要翻译： 航空视觉仪器。 其目的是通过提高能见度来协助飞行员飞行飞机的能力。 该设备具有用于视觉增强的非冷却IR传感器。 提供了一种集成的窗口组件，其允许传感器获得其图像。 该设备还具有集成的空气动力学外壳。 该装置具有负责窗户组装窗口控制功能和IR传感器控制的电子装置。 该装置是从飞机的俯视显示器或其他控制模块接收控制命令的单线可更换单元。 本机还提供视频显示。

公开(公告)号：US20080056606A1

公开(公告)日：2008-03-06

申请号：US11468137

申请日：2006-08-29

申请人： Patrick M. Kilgore

发明人： Patrick M. Kilgore

IPC分类号： G06K9/40

CPC分类号： G06T5/20 ,  F41G7/2213 ,  F41G7/2253 ,  F41G7/2293 ,  G06K9/40 ,  G06T5/002 ,  G06T5/005 ,  G06T2207/20032 ,  H04N5/3656 ,  H04N5/367 ,  H04N5/3675

摘要： A method of reducing an amount of fixed pattern noise from an image signal generated by an image sensor. The method includes, for each operational pixel in the image signal, applying a recursively updated offset term to generate a corrected image signal. The offset correction terms are recursively updated by spatially filtering the corrected image signal for a current frame of the image signal; comparing the filtered corrected image signal of the current frame with a spatially filtered corrected image signal of a preceding frame of the image signal; and updating the offset correction terms with terms generated as a function of the comparison.

摘要翻译： 一种从图像传感器生成的图像信号中减少固定图案噪声量的方法。 该方法包括对于图像信号中的每个运算像素，应用递归更新的偏移项以产生校正的图像信号。 通过对图像信号的当前帧进行校正图像信号的空间滤波来递归地更新偏移校正项; 将当前帧的滤波校正图像信号与图像信号的前一帧的空间滤波校正图像信号进行比较; 以及用作为比较的函数产生的术语来更新偏移校正项。

公开(公告)号：US07095005B2

公开(公告)日：2006-08-22

申请号：US10695386

申请日：2003-10-29

申请人： Yoshihiro Izumi

发明人： Yoshihiro Izumi

IPC分类号： H03F3/08 ,  H04N3/14 ,  H04N5/335

CPC分类号： H04N1/40056 ,  H01L27/14656 ,  H01L27/14679 ,  H04N5/361 ,  H04N5/3656

摘要： In an image reading device of the present invention, the polarity of a driving voltage for a Cs electrode is reversed every reading cycle (frame). For example, the Cs electrode is driven by positively charging the capacitor in odd-numbered cycles (frames) and by negatively charging the capacitor in even-numbered cycles (frames). As a result, an image reading device is provided that does not readily change electrical characteristics of the capacitor or TFT, and therefore are reliable over extended periods of use.

摘要翻译： 在本发明的图像读取装置中，每个读取周期（帧），Cs电极的驱动电压的极性反转。 例如，Cs电极通过以奇数周期（帧）对电容器进行正电荷驱动，并以偶数周期（帧）对电容器进行负电荷驱动。 结果，提供了不容易改变电容器或TFT的电气特性的图像读取装置，因此在长时间使用中是可靠的。

公开(公告)号：US20050247867A1

公开(公告)日：2005-11-10

申请号：US11122568

申请日：2005-05-05

申请人： Matthlas Volgt ,  Martln Zarzyckl ,  Hans-Gerd Brummel ,  Dennis Lemieux ,  Visvanathan Ramesh

发明人： Matthlas Volgt ,  Martln Zarzyckl ,  Hans-Gerd Brummel ,  Dennis Lemieux ,  Visvanathan Ramesh

IPC分类号： A61B6/00 ,  G01D18/00 ,  G01N23/00 ,  G12B13/00 ,  G21K1/12 ,  H05G1/60

CPC分类号： H04N5/367 ,  H04N5/33 ,  H04N5/3656

摘要： An imaging system (110) for imaging a scene with a detector array (104) having an array of imaging elements is provided. The imaging system (110) includes an image estimation module (202) for generating a plurality estimates of uncorrupted images based upon a plurality of noisy images generated by the detector array (104). The imaging system (110) further includes a parameter determination module (204) for determining one or more nonuniformity correction parameters based upon the estimates of uncorrupted images.

摘要翻译： 提供一种用于利用具有成像元件阵列的检测器阵列（104）对场景成像的成像系统（110）。 成像系统（110）包括图像估计模块（202），用于基于由检测器阵列（104）生成的多个噪声图像来生成未损坏图像的多个估计。 成像系统（110）还包括参数确定模块（204），用于基于未破坏的图像的估计来确定一个或多个不均匀性校正参数。

公开(公告)号：US20020159648A1

公开(公告)日：2002-10-31

申请号：US09841081

申请日：2001-04-25

发明人： Timothy Alderson ,  Gene D. Tener ,  Valete C. Hopkins ,  Charlie W. Stuart ,  Chinh X. Nguyen

IPC分类号： G06K009/40 ,  G06K009/44 ,  G06T005/00 ,  G06T005/20 ,  H04N001/409

CPC分类号： H04N5/33 ,  G06T5/20 ,  G06T2207/20032 ,  G06T2207/20208 ,  H04N5/2176 ,  H04N5/3656 ,  H04N5/367

摘要： A method and apparatus for processing image data is described, comprising acquiring a frame of image data and compressing the dynamic range of the frame of image data using a dynamic range compression (DRC) algorithm that utilizes down-sampling, median filtering, and up-sampling. The DRC algorithm comprises down-sampling a frame of image data comprising a first array of pixels to generate a second array of pixels, applying a first median filter to the second array of pixels to generate a blurred array of pixels, up-sampling the blurred array of pixels, and removing at least a portion of low-frequency gradient data generated by previous steps from the frame of image data.

摘要翻译： 描述了一种用于处理图像数据的方法和装置，包括使用动态范围压缩（DRC）算法获取图像数据帧并压缩图像数据帧的动态范围，所述动态范围压缩（DRC）算法利用下采样，中值滤波， 采样。 DRC算法包括对包括第一像素阵列的图像数据帧进行下采样以产生第二像素阵列，将第一中值滤波器应用于第二像素阵列以产生模糊的像素阵列，对模糊的 并且从图像数据的帧中去除由先前步骤产生的低频梯度数据的至少一部分。

公开(公告)号：US5717208A

公开(公告)日：1998-02-10

申请号：US655425

申请日：1996-05-30

申请人： James T. Woolaway, II

发明人： James T. Woolaway, II

IPC分类号： G02B26/10 ,  H01L27/146 ,  H04N5/33 ,  H04N5/349 ,  H04N5/365 ,  H04N5/369 ,  G01J5/24 ,  H01L31/09

CPC分类号： H04N5/3656 ,  G02B26/101 ,  H01L27/1465 ,  H04N5/33 ,  H04N5/349

摘要： An improved imaging technique is disclosed wherein an output from an IR-FPA (16) corresponds to image motion, wherein a scene image stays correlated with the IR-FPA readout, and wherein non-uniformities (e.g., fixed pattern spatial noise) are uncorrelated from frame to frame. The uncorrelated fixed pattern spatial noise is identified and removed by a signal processor, such as a SB-NUC block (24). The scene image is scanned over the IR-FPA by a dither mirror (14) in synchronism with the movement of a frame of pixels (17) on the IR-FPA. Electronics (16a, 16b, 30, 32, 34) are included on the IR-FPA for controlling the scanning and read out of pixels within a currently selected frame.

摘要翻译： 公开了一种改进的成像技术，其中来自IR-FPA（16）的输出对应于图像运动，其中场景图像与IR-FPA读出保持相关，并且其中非均匀性（例如，固定模式空间噪声）不相关 从帧到帧。 通过诸如SB-NUC块（24）的信号处理器识别和去除不相关的固定图案空间噪声。 与IR-FPA上的像素（17）的移动同步，通过抖动反射镜（14）在IR-FPA上扫描场景图像。 IR-FPA中包括电子装置（16a，16b，30,32,34），用于控制当前选择的帧内的像素的扫描和读出。

公开(公告)号：US5617461A

公开(公告)日：1997-04-01

申请号：US682028

申请日：1996-07-16

申请人： Horst Schreiner

发明人： Horst Schreiner

IPC分类号： H04N5/21 ,  H04N5/325 ,  H04N5/365 ,  H04N5/367 ,  H05G1/64

CPC分类号： H04N5/3205 ,  H04N5/21 ,  H04N5/325 ,  H04N5/3656 ,  H04N5/367

摘要： In a method for the operation of a digital imaging system of an X-ray diagnostic apparatus having an X-ray unit for the generation of X-ray images, an X-ray image converter-television chain for the acquisition of the X-ray images, the chain including a digital image converter having image points arranged in matrix form in rows and columns and a monitor for the reproduction of the X-ray images processed by the digital imaging system. Defective image points are recognized by converting at least one calibration image into a filter image by highpass filtering, e.g. a median filtering, and the filter image is subjected to defect determination, so that a defect image is obtained. The defect image is used for the correction of an original image.

摘要翻译： 在具有用于产生X射线图像的X射线单元的X射线诊断装置的数字成像系统的操作方法中，用于获取X射线的X射线图像转换器电视链 图像，链包括具有以行和列为矩阵形式排列的图像点的数字图像转换器和用于再现由数字成像系统处理的X射线图像的监视器。 通过高通滤波将例如至少一个校准图像转换成滤波器图像来识别有缺陷的图像点。 进行中值滤波，对滤波图像进行缺陷判定，得到缺陷图像。 缺陷图像用于校正原始图像。

公开(公告)号：US5604781A

公开(公告)日：1997-02-18

申请号：US598440

申请日：1996-02-08

申请人： Masakazu Suzuki ,  Keisuke Mori ,  Akifumi Tachibana ,  Kazunari Matoba ,  Hitoshi Asai ,  Kazuhisa Miyaguchi ,  Toshitaka Takeguchi

发明人： Masakazu Suzuki ,  Keisuke Mori ,  Akifumi Tachibana ,  Kazunari Matoba ,  Hitoshi Asai ,  Kazuhisa Miyaguchi ,  Toshitaka Takeguchi

IPC分类号： A61B6/00 ,  H04N5/32 ,  H05G1/60 ,  G01N23/04

CPC分类号： H04N5/3205 ,  A61B6/501 ,  A61B6/585 ,  H04N5/361 ,  H04N5/3656 ,  H05G1/60 ,  H04N5/32 ,  Y10S378/901

摘要： The present invention provides an X-ray tomographic imaging apparatus, wherein image degrading components caused by a CCD sensor (3c) or the like are reduced so as to obtain high-quality X-ray images. After tomographic imaging, dark current noise is eliminated by subtracting dark current correction data from a specific line of data among image data stored in an image memory. Next, sensitivity correction coefficients are prepared on the basis of data obtained when an X-ray beam having nearly uniform intensity distribution enters an X-ray imaging device 3. The image data obtained after dark current correction is then multiplied by the sensitivity correction coefficients. As a result, noise due to sensitivity variations or the like can be eliminated.

摘要翻译： 本发明提供一种X射线断层成像装置，其中由CCD传感器（3c）等引起的图像劣化成分减少，以获得高品质的X射线图像。 在断层成像之后，通过从存储在图像存储器中的图像数据中的特定数据线减去暗电流校正数据来消除暗电流噪声。 接下来，基于在具有几乎均匀的强度分布的X射线束进入X射线成像装置3时获得的数据来准备灵敏度校正系数。然后将在暗电流校正之后获得的图像数据乘以灵敏度校正系数。 结果，可以消除由于灵敏度变化等引起的噪声。

公开(公告)号：US5400161A

公开(公告)日：1995-03-21

申请号：US130955

申请日：1993-10-04

申请人： L. O. Lambert, Jr.

发明人： L. O. Lambert, Jr.

IPC分类号： F41G7/20 ,  F41G7/22 ,  G02B13/14 ,  G02B26/08 ,  H04N5/33 ,  H04N5/365 ,  G02F1/137 ,  G02B5/04 ,  G02F1/1335 ,  H04N7/18

CPC分类号： H04N5/3656 ,  F41G7/2213 ,  F41G7/2253 ,  F41G7/2293 ,  G02B13/14 ,  G02B26/0816 ,  G02B26/0875 ,  H04N5/33

摘要： An optical system is described including an array of photodetectors, each photodetector having a surface, and a focusing system employing a liquid crystal phased array for focusing a beam of electromagnetic energy on the surface of at least one of the photodetectors. The focusing system further includes a focus-defocus technique for periodically defocusing the beam of electromagnetic energy on the surface of at least one of the photodetectors. With such an arrangement, a focusing system is provided wherein fixed pattern noise can be decreased.

摘要翻译： 描述了一种光学系统，其包括光电检测器阵列，每个光电检测器具有表面，以及采用液晶相控阵的聚焦系统，用于将电磁能束束聚焦在至少一个光电检测器的表面上。 聚焦系统还包括聚焦 - 散焦技术，用于周期性地将电磁能束聚焦在至少一个光电检测器的表面上。 通过这样的结构，可以减少固定图案噪声的聚焦系统。

公开(公告)号：US4975864A

公开(公告)日：1990-12-04

申请号：US302534

申请日：1989-01-26

申请人： Robert Sendall ,  Donald K. Knight ,  Marvin J. Ramirez ,  Raymond L. McKeefery ,  Chuong D. Dan

发明人： Robert Sendall ,  Donald K. Knight ,  Marvin J. Ramirez ,  Raymond L. McKeefery ,  Chuong D. Dan

IPC分类号： G01S3/781 ,  G01S3/782 ,  H03H17/00 ,  H03H17/02 ,  H04N5/33 ,  H04N5/365

CPC分类号： H04N5/33 ,  H04N5/3656

摘要： Apparatus and methods for providing nonuniformity compensation of staring infrared focal plane array imaging systems, or other video imaging ssytem, or the like. The invention comprises a processor which implements nonuniformity compensation of the detectors comprising the array. The processor generates compensation terms that are stored in an offset term memory and which are subsequently combined with the output signals from the array. The processing accomplished by the present invention normalizes all detector elements in the array such that they all appear to respond to infrared energy in an identical manner. The processor comprises a median filter which selectively implements cross (X) shaped and plus (+) shaped filters. An antimedian calculator computes the antimedian of the output of the median filter. This value comprises the difference between the central pixel of a respective filter and the median value of all pixels in the cross (X) or plus (+) shaped filter. A third filter samples each of the signals from the detector array and compares them to a preset value indicative of an anticipated scene intensity level determined by the operator to provide an output signal indicative of the difference. Control circuity selects which output signal of the filter circuits is to be used to compensate the detector signals during a particlar video field. The ouptut signals of the antimedian calculator and average filter comprise sign information which is indicative whether the central pixel value is less than, equal to or greater than the median, or whether the central pixel is less than, equal to or greater than the preset value, respectively. The control circuitry increments or decrements the value of the offset terms stored in the offset term memory in resonse to the signal provided by the selected antimedian calculator or third filter, and convergence rate information supplied by the control circuitry which controls the rate of convergence of the offset terms toward the scene average.