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    Pixel-wise noise reduction in thermal images
    1.
    发明授权
    Pixel-wise noise reduction in thermal images 有权
    热图像中像素降噪

    公开(公告)号：US09208542B2

    公开(公告)日：2015-12-08

    申请号：US14029683

    申请日：2013-09-17

    Applicant: FLIR Systems, Inc.

    Inventor： Nicholas Högasten ,  Malin Ingerhed ,  Mark Nussmeier ,  Eric A. Kurth ,  Theodore R. Hoelter ,  Katrin Strandemar ,  Pierre Boulanger ,  Barbara Sharp

    IPC: G06K9/40 ,  G06T5/00 ,  H04N5/33 ,  H04N5/365

    CPC classification number: G06T5/002 ,  G06T2207/10016 ,  G06T2207/10048 ,  G06T2207/20182 ,  H04N5/33 ,  H04N5/3651 ,  H04N5/3658

    Abstract: Methods and systems are provided to reduce noise in thermal images. In one example, a method includes receiving an image frame comprising a plurality of pixels arranged in a plurality of rows and columns. The pixels comprise thermal image data associated with a scene and noise introduced by an infrared imaging device. The image frame may be processed to determine a plurality of column correction terms, each associated with a corresponding one of the columns and determined based on relative relationships between the pixels of the corresponding column and the pixels of a neighborhood of columns. In another example, the image frame may be processed to determine a plurality of non-uniformity correction terms, each associated with a corresponding one of the pixels and determined based on relative relationships between the corresponding one of the pixels and associated neighborhood pixels within a selected distance.

    Abstract translation: 提供了方法和系统来减少热图像中的噪音。 在一个示例中，一种方法包括接收包括以多个行和列排列的多个像素的图像帧。 像素包括与场景相关联的热图像数据和由红外成像装置引入的噪声。 可以处理图像帧以确定多个列校正项，每个列修正项与列中的相应列之一相关联，并且基于相应列的像素和列的邻域的像素之间的相对关系来确定。 在另一示例中，图像帧可以被处理以确定多个不均匀性校正项，每一个都与相应的一个像素相关联，并且基于所选择的像素中的相应一个像素和相关邻域像素之间的相对关系确定 距离。

    PIXEL-WISE NOISE REDUCTION IN THERMAL IMAGES
    2.
    发明申请
    PIXEL-WISE NOISE REDUCTION IN THERMAL IMAGES 有权
    PIXEL-WISE NOISE减少热像

    公开(公告)号：US20140016879A1

    公开(公告)日：2014-01-16

    申请号：US14029683

    申请日：2013-09-17

    Applicant: FLIR Systems, Inc.

    Inventor： Nicholas Högasten ,  Malin Ingerhed ,  Mark Nussmeier ,  Eric A. Kurth ,  Theodore R. Hoelter ,  Katrin Strandemar ,  Pierre Boulanger ,  Barbara Sharp

    IPC: G06T5/00

    CPC classification number: G06T5/002 ,  G06T2207/10016 ,  G06T2207/10048 ,  G06T2207/20182 ,  H04N5/33 ,  H04N5/3651 ,  H04N5/3658

    Abstract: Methods and systems are provided to reduce noise in thermal images. In one example, a method includes receiving an image frame comprising a plurality of pixels arranged in a plurality of rows and columns. The pixels comprise thermal image data associated with a scene and noise introduced by an infrared imaging device. The image frame may be processed to determine a plurality of column correction terms, each associated with a corresponding one of the columns and determined based on relative relationships between the pixels of the corresponding column and the pixels of a neighborhood of columns. In another example, the image frame may be processed to determine a plurality of non-uniformity correction terms, each associated with a corresponding one of the pixels and determined based on relative relationships between the corresponding one of the pixels and associated neighborhood pixels within a selected distance.

    Abstract translation: 提供了方法和系统来减少热图像中的噪音。 在一个示例中，一种方法包括接收包括以多个行和列排列的多个像素的图像帧。 像素包括与场景相关联的热图像数据和由红外成像装置引入的噪声。 可以处理图像帧以确定多个列校正项，每个列修正项与列中的相应列之一相关联，并且基于相应列的像素和列的邻域的像素之间的相对关系来确定。 在另一示例中，图像帧可以被处理以确定多个不均匀性校正项，每一个都与相应的一个像素相关联，并且基于所选择的像素中的相应一个像素和相关邻域像素之间的相对关系确定 距离。

    ANOMALOUS PIXEL DETECTION
    4.
    发明申请
    ANOMALOUS PIXEL DETECTION 有权
    异常像素检测

    公开(公告)号：US20150312489A1

    公开(公告)日：2015-10-29

    申请号：US14750781

    申请日：2015-06-25

    Applicant: FLIR Systems, Inc.

    Inventor： Theodore R. Hoelter ,  Nicholas Högasten ,  Malin Ingerhed ,  Mark Nussmeier ,  Eric A. Kurth ,  Katrin Strandemar ,  Pierre Boulanger ,  Barbara Sharp

    IPC: H04N5/33 ,  G06T5/00 ,  H04N5/225 ,  H04N5/365 ,  H04N5/367

    CPC classification number: H04N5/33 ,  G06T5/002 ,  G06T5/20 ,  G06T2207/10048 ,  H04N5/2254 ,  H04N5/2257 ,  H04N5/3651 ,  H04N5/3658 ,  H04N5/3675

    Abstract: Various techniques are provided to identify anomalous pixels in images captured by imaging devices. In one example, an infrared image frame is received. The infrared image frame is captured by a plurality of infrared sensors based on infrared radiation passed through an optical element. A pixel of the infrared image frame is selected. A plurality of neighborhood pixels of the infrared image frame are selected. Values of the selected pixel and the neighborhood pixels are processed to determine whether the value of the selected pixel exhibits a disparity in relation to the neighborhood pixels that exceeds a maximum disparity associated with a configuration of the optical element and the infrared sensors. The selected pixel is selectively designated as an anomalous pixel based on the processing.

    Abstract translation: 提供各种技术来识别由成像设备捕获的图像中的异常像素。 在一个示例中，接收红外图像帧。 基于通过光学元件的红外线辐射，由红外线传感器捕获红外图像帧。 选择红外图像帧的像素。 选择红外图像帧的多个邻域像素。 处理所选择的像素和相邻像素的值以确定所选像素的值是否相对于超过与光学元件和红外传感器的配置相关联的最大视差的邻近像素呈现差异。 基于该处理，所选择的像素被选择性地指定为异常像素。

    ROW AND COLUMN NOISE REDUCTION IN THERMAL IMAGES
    5.
    发明申请
    ROW AND COLUMN NOISE REDUCTION IN THERMAL IMAGES 有权
    热图像中的噪声和噪声减少

    公开(公告)号：US20140037225A1

    公开(公告)日：2014-02-06

    申请号：US14029716

    申请日：2013-09-17

    Applicant: FLIR Systems, Inc.

    Inventor： Nicholas Högasten ,  Malin Ingerhed ,  Mark Nussmeier ,  Eric A. Kurth ,  Theodore R. Hoelter ,  Katrin Strandemar ,  Pierre Boulanger ,  Barbara Sharp

    IPC: G06T5/00

    CPC classification number: G06T5/002 ,  G06T5/50 ,  G06T2207/10016 ,  G06T2207/10048 ,  G06T2207/20182 ,  H04N5/2253 ,  H04N5/2254 ,  H04N5/2257 ,  H04N5/33 ,  H04N5/3658

    Abstract: Methods and systems are provided to reduce noise in thermal images. In one example, a method includes receiving an image frame comprising a plurality of pixels arranged in a plurality of rows and columns. The pixels comprise thermal image data associated with a scene and noise introduced by an infrared imaging device. The image frame may be processed to determine a plurality of column correction terms, each associated with a corresponding one of the columns and determined based on relative relationships between the pixels of the corresponding column and the pixels of a neighborhood of columns. In another example, the image frame may be processed to determine a plurality of non-uniformity correction terms, each associated with a corresponding one of the pixels and determined based on relative relationships between the corresponding one of the pixels and associated neighborhood pixels within a selected distance.

    Abstract translation: 提供了方法和系统来减少热图像中的噪音。 在一个示例中，一种方法包括接收包括以多个行和列排列的多个像素的图像帧。 像素包括与场景相关联的热图像数据和由红外成像装置引入的噪声。 可以处理图像帧以确定多个列校正项，每个列修正项与列中的相应列之一相关联，并且基于相应列的像素和列的邻域的像素之间的相对关系来确定。 在另一示例中，图像帧可以被处理以确定多个不均匀性校正项，每一个都与相应的一个像素相关联，并且基于所选择的像素中的相应一个像素和相关邻域像素之间的相对关系确定 距离。

    THERMAL IMAGE FRAME CAPTURE USING DE-ALIGNED SENSOR ARRAY
    6.
    发明申请
    THERMAL IMAGE FRAME CAPTURE USING DE-ALIGNED SENSOR ARRAY 有权
    使用对准的传感器阵列的热图像帧捕获

    公开(公告)号：US20130250125A1

    公开(公告)日：2013-09-26

    申请号：US13893809

    申请日：2013-05-14

    Applicant: FLIR Systems, Inc.

    Inventor： Stanley H. Garrow ,  Nicholas Högasten ,  Theodore R. Hoelter ,  Katrin Strandemar ,  Pierre Boulanger ,  Barbara Sharp ,  Eric A. Kurth ,  Malin Ingerhed

    IPC: H04N5/33

    CPC classification number: H04N5/33 ,  H04N5/3651 ,  H04N5/3658

    Abstract: Various techniques are provided to capture one or more thermal image frames using an infrared sensor array that is fixably positioned to substantially de-align rows and columns of infrared sensors. In one example, an infrared imaging system includes an infrared sensor array comprising a plurality of infrared sensors arranged in rows and columns and adapted to capture a thermal image frame of a scene exhibiting at least one substantially horizontal or substantially vertical feature. The infrared imaging system also includes a housing. The infrared sensor array is fixably positioned within the housing to substantially de-align the rows and columns from the feature while the thermal image frame is captured.

    Abstract translation: 提供了各种技术来捕获使用红外传感器阵列的一个或多个热图像帧，所述红外传感器阵列可固定地定位成基本上对准红外传感器的行和列。 在一个示例中，红外成像系统包括红外传感器阵列，其包括布置成行和列的多个红外传感器，并适于捕获呈现至少一个基本上水平或基本垂直的特征的场景的热图像帧。 红外成像系统还包括壳体。 红外传感器阵列可固定地定位在壳体内，以在捕获热图像帧时从特征基本上对准行和列。

    Systems and methods for processing infrared images
    10.
    发明授权
    Systems and methods for processing infrared images 有权
    处理红外图像的系统和方法

    公开(公告)号：US09237284B2

    公开(公告)日：2016-01-12

    申请号：US13622178

    申请日：2012-09-18

    Applicant: FLIR Systems, Inc.

    Inventor： Nicholas Högasten ,  Malin Ingerhed

    IPC: H04N5/365 ,  H04N5/33

    CPC classification number: H04N5/3658 ,  H04N5/33

    Abstract: Various techniques are provided to process infrared images. In one implementation, a method of processing infrared image data includes receiving infrared image data associated with a scene. The infrared image data comprises a plurality of pixels arranged in a plurality of rows and columns. The method also includes selecting one of the columns. The method also includes, for each pixel of the selected column, comparing the pixel to a corresponding plurality of neighborhood pixels. The method also includes, for each comparison, adjusting a first counter if the pixel of the selected column has a value greater than the compared neighborhood pixel. The method also includes, for each comparison, adjusting a second counter if the pixel of the selected column has a value less than the compared neighborhood pixel. The method also includes selectively updating a column correction term associated with the selected column based on the first and second counters.

    Abstract translation: 提供了各种技术来处理红外图像。 在一个实现中，处理红外图像数据的方法包括接收与场景相关联的红外图像数据。 红外图像数据包括排列成多行和多列的多个像素。 该方法还包括选择一列。 对于所选列的每个像素，该方法还包括将像素与对应的多个邻域像素进行比较。 对于每个比较，该方法还包括如果所选列的像素的值大于被比较的邻域像素的值，则调整第一计数器。 如果所选择的列的像素具有小于被比较的邻域像素的值，则该方法还包括对于每个比较来调整第二计数器。 该方法还包括基于第一和第二计数器选择性地更新与所选列相关联的列校正项。

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