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    Multi-band infrared camera system optimized for skin detection
    1.
    发明授权
    Multi-band infrared camera system optimized for skin detection 有权
    针对皮肤检测优化的多波段红外相机系统

    公开(公告)号：US09171196B2

    公开(公告)日：2015-10-27

    申请号：US13416436

    申请日：2012-03-09

    申请人： Yao Rong Wang ,  Lalit Keshav Mestha ,  Beilei Xu ,  Raja Bala ,  Graham Pennington

    发明人： Yao Rong Wang ,  Lalit Keshav Mestha ,  Beilei Xu ,  Raja Bala ,  Graham Pennington

    IPC分类号： H04N7/18 ,  G06K9/00 ,  H04N5/33 ,  G06K9/20

    CPC分类号： G06K9/00255 ,  G06K9/00838 ,  G06K9/2018 ,  H04N5/33

    摘要： What is disclosed is a system and method for selecting the optimal wavelength ban combination for a multi-band infrared camera system which is optimized for skin detection. An objective function is constructed specifically for this application from classified performance and the algorithm generates wavelengths by maximizing the objective function. A specific wavelength band combination is selected which maximizes the objective function. Also disclosed is a 3-band and 4-band camera system with filters each having a transmittance of one of a combination of wavelength bands optimized to detect skin in the infrared band. The camera systems disclosed herein find their intended uses in a wide array of vehicle occupancy detection systems and applications. Various embodiments are disclosed.

    摘要翻译： 公开的是用于为针对皮肤检测而优化的多频带红外相机系统选择最佳波长禁止组合的系统和方法。 目标函数由分类性能专门为此应用构建，算法通过最大化目标函数生成波长。 选择使目标函数最大化的特定波段组合。 还公开了一种具有滤波器的三频带和四频带相机系统，每个滤波器具有被优化以检测红外频带中的皮肤的波长带的组合之一的透射率。 本文公开的相机系统在各种车辆占用检测系统和应用中找到其预期用途。 公开了各种实施例。

    Method and apparatus for optimum black component determination for gray component replacement
    2.
    发明授权
    Method and apparatus for optimum black component determination for gray component replacement 有权
    用于灰分成分更换的最佳黑色成分确定的方法和装置

    公开(公告)号：US07768682B2

    公开(公告)日：2010-08-03

    申请号：US12017746

    申请日：2008-01-22

    申请人： Lalit Keshav Mestha ,  Yao Rong Wang ,  Alvaro Enrique Gil ,  Martin S. Maltz ,  Raja Bala

    发明人： Lalit Keshav Mestha ,  Yao Rong Wang ,  Alvaro Enrique Gil ,  Martin S. Maltz ,  Raja Bala

    IPC分类号： G03F3/08

    CPC分类号： H04N1/6025 ,  G06K15/02 ,  G06K15/1822 ,  G06K15/1825 ,  G06K2215/0094

    摘要： A multi-dimensional printer profile look-up table for color correction is generated. First, an initial estimate for a black (K) component in a four-color color space for received color signals in the device independent color space is generated by using a three-dimensional parametric function. Next, initial estimates for the three non-black color components of the four-color color space are generated from the generated initial estimate for the black (K) component and the received color signals. Then, a printer profile including a map that maps the device independent color space to the four-color color space is generated using the generated initial estimates for the black (K) and the three non-black color components in the four-color color space.

    摘要翻译： 产生用于颜色校正的多维打印机轮廓查找表。 首先，通过使用三维参数函数来生成用于装置独立色彩空间中的接收彩色信号的四色彩色空间中的黑色（K）分量的初始估计。 接下来，从生成的黑（K）分量和接收到的颜色信号的初始估计中产生四色颜色空间的三个非黑色分量的初始估计。 然后，使用生成的四色颜色空间中的黑色（K）和三种非黑色分量的初始估计来生成包括将设备独立颜色空间映射到四色颜色空间的地图的打印机配置文件 。

    Estimating a visible vector representation for pixels in an infrared image
    3.
    发明授权
    Estimating a visible vector representation for pixels in an infrared image 有权
    估计红外图像中像素的可见向量表示

    公开(公告)号：US08810658B2

    公开(公告)日：2014-08-19

    申请号：US13364835

    申请日：2012-02-02

    申请人： Sandra Skaff ,  Raja Bala ,  Lalit Keshav Mestha ,  Beilei Xu

    发明人： Sandra Skaff ,  Raja Bala ,  Lalit Keshav Mestha ,  Beilei Xu

    IPC分类号： H04N5/33

    CPC分类号： H04N5/33 ,  G06T7/90 ,  G06T2207/10048 ,  H04N5/332 ,  H04N9/045 ,  H04N9/43

    摘要： What is disclosed is a system and method for estimating color for pixels in an infrared image. In one embodiment, an infrared image is received which has been captured using a N-band infrared imaging system comprising a multi-spectral camera or a hyperspectral camera. The IR image is composed of an array of pixels with N intensity values having been collected for each pixel in the image. Then, for each pixel of interest, a search metric is used to search a database of vector samples to identify a visible-IR set which is closest to the intensity values of the IR band vector collected for the pixel. A visible vector representation is then estimated for the pixel based upon the visible portion corresponding to the closest visible-IR set. Thereafter, color coordinates for this pixel are computed from the visible vector. The method repeats for all pixels of interest in the IR image.

    摘要翻译： 公开的是用于估计红外图像中的像素的颜色的系统和方法。 在一个实施例中，接收使用包括多光谱相机或高光谱相机的N波段红外成像系统捕获的红外图像。 IR图像由对图像中的每个像素收集的具有N个强度值的像素阵列组成。 然后，对于感兴趣的每个像素，使用搜索度量来搜索向量样本的数据库，以识别最接近为该像素收集的IR带矢量的强度值的可见IR集合。 然后基于对应于最接近的可见IR集的可见部分，针对像素估计可见矢量表示。 此后，从可见矢量计算该像素的颜色坐标。 该方法针对IR图像中所有感兴趣的像素重复。

    HIERARCHICAL MULTIDIMENSIONAL LOOKUP TABLE GENERATION
    5.
    发明申请
    HIERARCHICAL MULTIDIMENSIONAL LOOKUP TABLE GENERATION 有权
    分层多元查找表生成

    公开(公告)号：US20110305389A1

    公开(公告)日：2011-12-15

    申请号：US12815823

    申请日：2010-06-15

    申请人： Martin S. Maltz ,  Raja Bala ,  Lalit Keshav Mestha

    发明人： Martin S. Maltz ,  Raja Bala ,  Lalit Keshav Mestha

    IPC分类号： G06K9/00

    CPC分类号： G06K9/00 ,  G06T11/001

    摘要： What is disclosed is a novel system and method for generating a hierarchical LUT for implementing a color transformation within a color imaging system. In one embodiment, a coarse LUT is received which comprises a plurality of sub-cubes arrayed on a plurality of coarse levels on a structured coarse grid. Each of the sub-cubes encompasses at least one coarse LUT node. Sub-cubes in the coarse grid are identified that are bisected by a boundary surface of the gamut. Then, each of the identified coarse LUT sub-cubes are associated with fine LUT which comprises a plurality of fine LUT nodes arrayed on a plurality of fine levels on a structured fine grid. A hierarchical LUT is generated from the coarse LUT and the associated fine LUTs. Thereafter, the hierarchical LUT can be used for color transformation within a color imaging system.

    摘要翻译： 公开的是用于生成用于实现彩色成像系统内的颜色变换的分层LUT的新型系统和方法。 在一个实施例中，接收粗略LUT，其包括排列在结构化粗网格上的多个粗略级上的多个子立方体。 每个子立方体包含至少一个粗略LUT节点。 识别粗网格中的子立方体，其被色域的边界面平分。 然后，识别的粗略LUT子立方体中的每一个都与精细LUT相关联，该精细LUT包括排列在结构化细网格上的多个精细级上的多个精细LUT节点。 从粗略LUT和相关联的精细LUT生成分层LUT。 此后，分层LUT可以用于彩色成像系统内的颜色变换。

    Pitch based high quantization halftone dot linearization for rendering high quality color images
    6.
    发明授权
    Pitch based high quantization halftone dot linearization for rendering high quality color images 有权
    基于间距的高量化半色调点线性化，用于渲染高质量彩色图像

    公开(公告)号：US08654402B2

    公开(公告)日：2014-02-18

    申请号：US12472689

    申请日：2009-05-27

    申请人： Lalit Keshav Mestha ,  Richard Leighton Howe ,  Raja Bala

    发明人： Lalit Keshav Mestha ,  Richard Leighton Howe ,  Raja Bala

    IPC分类号： G06K15/00

    CPC分类号： G06K15/00 ,  H04N1/52 ,  H04N1/6027 ,  H04N1/6033

    摘要： A device, system, and method for reducing the pitch-to-pitch variation of color using pitch-based linearization of halftone screens are presented. A selection of images is printed at different pitches, and each image is measured and tracked with its pitch. Pitch-based TRCs are constructed using patches, which may be scheduled during print run or during machine diagnostic process and halftone dots are constructed and uploaded in the image path for each pitch. The updated dots are then used to produce a linearized halftone image for transfer to a print surface which results in improved color balance.

    摘要翻译： 提出了使用基于色调的网版线性化来减少颜色间距变化的装置，系统和方法。 以不同的间距打印图像的选择，并且每个图像被测量并用其间距进行跟踪。 基于间距的TRC使用补丁构建，其可以在打印运行期间或在机器诊断过程期间被调度，并且在每个间距的图像路径中构造并上传半色调点。 然后更新的点用于产生线性化的半色调图像以转印到打印表面，这导致改善的色彩平衡。

    Hierarchical multidimensional lookup table generation
    8.
    发明授权
    Hierarchical multidimensional lookup table generation 有权
    分层多维查找表生成

    公开(公告)号：US08526727B2

    公开(公告)日：2013-09-03

    申请号：US12815823

    申请日：2010-06-15

    申请人： Martin S. Maltz ,  Raja Bala ,  Lalit Keshav Mestha

    发明人： Martin S. Maltz ,  Raja Bala ,  Lalit Keshav Mestha

    IPC分类号： G06K9/00 ,  G06K9/36 ,  G06K1/00 ,  G06F15/00 ,  H04N1/60 ,  G03F3/08 ,  G09G5/02

    CPC分类号： G06K9/00 ,  G06T11/001

    摘要： A system and method for generating a hierarchical LUT for implementing a color transformation within a color imaging system. In one embodiment, a coarse LUT is received which comprises a plurality of sub-cubes arrayed on a plurality of coarse levels on a structured coarse grid. Each of the sub-cubes encompasses at least one coarse LUT node. Sub-cubes in the coarse grid are identified that are bisected by a boundary surface of the gamut. Then, each of the identified coarse LUT sub-cubes are associated with fine LUT which comprises a plurality of fine LUT nodes arrayed on a plurality of fine levels on a structured fine grid. A hierarchical LUT is generated from the coarse LUT and the associated fine LUTs. Thereafter, the hierarchical LUT can be used for color transformation within a color imaging system.

    摘要翻译： 一种用于生成用于在彩色成像系统内实现颜色变换的分层LUT的系统和方法。 在一个实施例中，接收粗略LUT，其包括排列在结构化粗网格上的多个粗略级上的多个子立方体。 每个子立方体包含至少一个粗略LUT节点。 识别粗网格中的子立方体，其被色域的边界面平分。 然后，识别的粗略LUT子立方体中的每一个都与精细LUT相关联，该精细LUT包括排列在结构化细网格上的多个精细级上的多个精细LUT节点。 从粗略LUT和相关联的精细LUT生成分层LUT。 此后，分层LUT可以用于彩色成像系统内的颜色变换。

    Pitch based high quantization halftone dot linearization for rendering high quality color images
    9.
    发明申请
    Pitch based high quantization halftone dot linearization for rendering high quality color images 有权
    基于间距的高量化半色调点线性化，用于渲染高质量彩色图像

    公开(公告)号：US20090296156A1

    公开(公告)日：2009-12-03

    申请号：US12472689

    申请日：2009-05-27

    申请人： Lalit Keshav Mestha ,  Richard Leighton Howe ,  Raja Bala

    发明人： Lalit Keshav Mestha ,  Richard Leighton Howe ,  Raja Bala

    IPC分类号： H04N1/405

    CPC分类号： G06K15/00 ,  H04N1/52 ,  H04N1/6027 ,  H04N1/6033

    摘要： A device, system, and method for reducing the pitch-to-pitch variation of color using pitch-based linearization of halftone screens are presented. A selection of images is printed at different pitches, and each image is measured and tracked with its pitch. Pitch-based TRCs are constructed using patches, which may be scheduled during print run or during machine diagnostic process and halftone dots are constructed and uploaded in the image path for each pitch. The updated dots are then used to produce a linearized halftone image for transfer to a print surface which results in improved color balance.

    摘要翻译： 提出了使用基于色调的网版线性化来减少颜色间距变化的装置，系统和方法。 以不同的间距打印图像的选择，并且每个图像被测量并用其间距进行跟踪。 基于间距的TRC使用补丁构建，其可以在打印运行期间或在机器诊断过程期间被调度，并且在每个间距的图像路径中构造并上传半色调点。 然后更新的点用于产生线性化的半色调图像以转印到打印表面，这导致改善的色彩平衡。