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16 条记录 (耗时 0.017 秒)

    Resolution adaptive image filtering system and method
    11.
    发明授权
    Resolution adaptive image filtering system and method 有权
    分辨率自适应图像滤波系统及方法

    公开(公告)号：US07590306B2

    公开(公告)日：2009-09-15

    申请号：US10723791

    申请日：2003-11-26

    申请人： Rakesh Mohan Lal ,  David C. Mack ,  Gopal B. Avinash

    发明人： Rakesh Mohan Lal ,  David C. Mack ,  Gopal B. Avinash

    IPC分类号： G06K9/32 ,  G06K9/40

    CPC分类号： G06T3/4084 ,  G06T5/002 ,  G06T5/003 ,  G06T5/20 ,  G06T2207/20012 ,  G06T2207/20192 ,  G06T2207/30004

    摘要： A technique is provided for improving digital images by analysis of the sampling rate of the image data. The optimal sampling rate is determined, such as based on the point-spread function of the imaging system, and is compared to the actual pixel sampling rate. Based upon the comparison, the image may be shrunk or sub-sampled to provide the optimal sampling rate that allows for optimal image filtering while accounting for inherent variations in spatial resolution of the images.

    摘要翻译： 提供了通过分析图像数据的采样率来改善数字图像的技术。 确定最佳采样率，例如基于成像系统的点扩散功能，并将其与实际像素采样率进行比较。 基于比较，图像可以被收缩或次采样以提供允许最佳图像滤波的最佳采样速率，同时考虑图像的空间分辨率的固有变化。

    Method and apparatus for signal-to-noise ratio dependent image processing
    12.
    发明授权
    Method and apparatus for signal-to-noise ratio dependent image processing 有权
    用于信噪比相关图像处理的方法和装置

    公开(公告)号：US07248749B2

    公开(公告)日：2007-07-24

    申请号：US10629155

    申请日：2003-07-29

    申请人： Gopal B. Avinash ,  Robert Michael Vavrek ,  Rakesh Mohan Lal ,  Imran A. Bajwa

    发明人： Gopal B. Avinash ,  Robert Michael Vavrek ,  Rakesh Mohan Lal ,  Imran A. Bajwa

    IPC分类号： G06K9/40

    CPC分类号： G06T5/002 ,  G06T2207/10072 ,  G06T2207/10116 ,  G06T2207/10132 ,  G06T2207/20008 ,  G06T2207/20012 ,  G06T2207/30004

    摘要： Certain embodiments of the present invention relate to a signal-to-noise ratio dependent image processing system. The method includes computing at least one SNR for at least one region of an image, determining a filter parameter for at least one region based on the at least one SNR, and processing at least one region of the image based on the filter parameter. In addition to SNR, a filter parameter may be determined using user preferences. The system includes a signal-to-noise ratio processor for determining a signal-to-noise ratio for an image. The system also includes a parameter selection unit for selecting at least one filter parameter based on the signal-to-noise ratio. The system further includes an image filter for filtering the image based on the filter parameter(s). In an embodiment, the SNR processor determines signal-to-noise ratio(s) for region(s) in the image.

    摘要翻译： 本发明的某些实施例涉及一种信噪比依赖图像处理系统。 该方法包括为图像的至少一个区域计算至少一个SNR，基于至少一个SNR确定至少一个区域的滤波器参数，以及基于滤波器参数来处理图像的至少一个区域。 除了SNR之外，可以使用用户偏好来确定滤波器参数。 该系统包括用于确定图像的信噪比的信噪比处理器。 该系统还包括用于基于信噪比选择至少一个滤波器参数的参数选择单元。 该系统还包括用于基于滤波器参数来过滤图像的图像滤波器。 在一个实施例中，SNR处理器确定图像中的区域的信噪比。

    SYSTEMS, METHODS AND APPARATUS FOR TRACKING CHANGES IN AN OCULAR SCENE
    13.
    发明申请
    SYSTEMS, METHODS AND APPARATUS FOR TRACKING CHANGES IN AN OCULAR SCENE 审中-公开
    用于跟踪OCARAR场景变化的系统，方法和设备

    公开(公告)号：US20170055820A1

    公开(公告)日：2017-03-02

    申请号：US15245138

    申请日：2016-08-23

    申请人： Rakesh Mohan Lal

    发明人： Rakesh Mohan Lal

    IPC分类号： A61B3/00 ,  A61B5/00 ,  G02B7/04 ,  A61B3/14 ,  G02B15/14

    CPC分类号： A61B3/0025 ,  A61B3/0041 ,  A61B3/14 ,  A61B5/0013 ,  A61B5/0022 ,  A61B2560/0233 ,  G02B7/102 ,  G02B15/14 ,  G06F19/00 ,  G16H40/67

    摘要： Systems, methods and apparatus are provided through which in some aspects an ocular scene is imaged and changes in the ocular scene relative to a calibration image, are tracked. In one aspect, an imaging instrument includes an eyepiece, a light source operable to project light, an imaging system operable to image an ocular scene; and a processing system operable to receive a set of calibration images, and further operable to capture an image of the imaged ocular scene associated with a calibration image. In another aspect, a method to track changes in an ocular scene includes receiving a set of calibration images, receiving a set of landmarks on each calibration image, capturing a set of images of an ocular scene, associating each captured image with a calibration image, and detecting landmarks on each captured image wherein each detected landmark corresponds to a landmark on the associated calibration image.

    摘要翻译： 提供了系统，方法和装置，通过该系统，方法和装置，在一些方面，对眼睛场景进行成像，并且跟踪相对于校准图像的眼睛场景的变化。 一方面，一种成像仪器包括目镜，可操作以投影光的光源，可操作以对眼睛场景进行成像的成像系统; 以及处理系统，其可操作以接收一组校准图像，并且还可操作以捕获与校准图像相关联的所成像的眼睛场景的图像。 另一方面，一种跟踪目镜场景变化的方法包括接收一组校准图像，在每个校准图像上接收一组地标，捕获一组眼睛场景的图像，将每个拍摄图像与校准图像相关联， 以及检测每个拍摄图像上的地标，其中每个检测到的地标对应于相关校准图像上的地标。

    Systems, methods and apparatus for tracking changes in an ocular scene
    15.
    发明授权
    Systems, methods and apparatus for tracking changes in an ocular scene 有权

    公开(公告)号：US10098532B2

    公开(公告)日：2018-10-16

    申请号：US15245138

    申请日：2016-08-23

    申请人： Rakesh Mohan Lal

    发明人： Rakesh Mohan Lal

    IPC分类号： A61B3/14 ,  A61B3/00 ,  G02B15/14 ,  A61B5/00 ,  G02B7/10

    摘要： Systems, methods and apparatus are provided through which in some aspects an ocular scene is imaged and changes in the ocular scene relative to a calibration image, are tracked. In one aspect, an imaging instrument includes an eyepiece, a light source operable to project light, an imaging system operable to image an ocular scene; and a processing system operable to receive a set of calibration images, and further operable to capture an image of the imaged ocular scene associated with a calibration image. In another aspect, a method to track changes in an ocular scene includes receiving a set of calibration images, receiving a set of landmarks on each calibration image, capturing a set of images of an ocular scene, associating each captured image with a calibration image, and detecting landmarks on each captured image wherein each detected landmark corresponds to a landmark on the associated calibration image.