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。

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 。

公开(公告)号：US08600227B2

公开(公告)日：2013-12-03

申请号：US13239642

申请日：2011-09-22

申请人： Beilei Xu ,  Lalit Keshav Mestha ,  Yao Rong Wang ,  Peter Paul

发明人： Beilei Xu ,  Lalit Keshav Mestha ,  Yao Rong Wang ,  Peter Paul

IPC分类号： G03B11/00

CPC分类号： G06K9/209 ,  G01J3/2823 ,  G01J3/36 ,  G02B5/201 ,  G02B5/208 ,  G03B11/00 ,  G06K9/00255 ,  G06K2009/00932

摘要： A filter array for a multi-resolution multi-spectral camera system is described which not only captures 2D images at multiple wavelength bands simultaneously but also at a spatial resolution that meets the demand for spatial feature extraction. The present system optimizes filter bands that provide high image contrast at the highest possible resolution to enable spatial feature extraction and other wavelength bands at lower resolution to achieve maximum number of wavelength bands (e.g. spectral resolution) for multi-spectral analysis. After determining the required spatial resolution and number of wavelength bands for spectral analysis, multiple filters are arranged in a geometric pattern with each filter being designed to have specified wavelength and spatial resolution. Physical sizes of filters differ within each filter group. This maximizes the detector usage while optimizing the trade-off between spatial resolution and spectral resolution. Filter gaps are fixed or tuned to wavelengths of interest.

摘要翻译： 描述了用于多分辨率多光谱照相机系统的滤光器阵列，其不仅在多个波长带同时捕获2D图像，而且以满足空间特征提取需求的空间分辨率捕获。 本系统优化以最高可能分辨率提供高图像对比度的滤波器频带，以便能够以较低分辨率进行空间特征提取和其他波长带，以实现用于多光谱分析的最大数量的波段（例如光谱分辨率）。 在确定所需的空间分辨率和用于频谱分析的波长带数之后，多个滤波器以几何图形排列，每个滤波器被设计为具有指定的波长和空间分辨率。 每个过滤器组中过滤器的物理尺寸不同。 这最大限度地提高了检测器的使用率，同时优化了空间分辨率和光谱分辨率之间的折衷。 滤波器间隙固定或调谐到感兴趣的波长。

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。

公开(公告)号：US09025024B2

公开(公告)日：2015-05-05

申请号：US13247343

申请日：2011-09-28

申请人： Beilei Xu ,  Wencheng Wu ,  Lalit Keshav Mestha ,  Graham Pennington

发明人： Beilei Xu ,  Wencheng Wu ,  Lalit Keshav Mestha ,  Graham Pennington

IPC分类号： H04N7/18 ,  G06K9/20 ,  H04N5/232 ,  H04N5/33

CPC分类号： G06K9/2018 ,  H04N5/23206 ,  H04N5/23219 ,  H04N5/332

摘要： What is disclosed is a system and method for identifying materials comprising an object captured in a video and for using the identified materials to track that object as it moves across the captured video scene. In one embodiment, a multi-spectral or hyper-spectral sensor is used to capture a spectral image of an object in an area of interest. Pixels in the spectral planes of the spectral images are analyzed to identify a material comprising objects in that area of interest. A location of each of the identified objects is provided to an imaging sensor which then proceeds to track the objects as they move through a scene. Various embodiments are disclosed.

摘要翻译： 公开的是用于识别包括在视频中捕获的对象的材料的系统和方法，并且用于当所述对象在所捕获的视频场景中移动时使用所识别的材料来跟踪该对象。 在一个实施例中，使用多光谱或超光谱传感器来捕获感兴趣区域中的对象的光谱图像。 分析光谱图像的光谱平面中的像素以识别包含该感兴趣区域中的物体的材料。 每个识别的对象的位置被提供给成像传感器，然后成像传感器在它们移动通过场景时跟踪对象。 公开了各种实施例。

公开(公告)号：US08790269B2

公开(公告)日：2014-07-29

申请号：US13103406

申请日：2011-05-09

申请人： Beilei Xu ,  Lalit Keshav Mestha ,  Graham Pennington

发明人： Beilei Xu ,  Lalit Keshav Mestha ,  Graham Pennington

IPC分类号： A61B5/08

CPC分类号： A61B5/015 ,  A61B5/0008 ,  A61B5/08 ,  A61B2503/04 ,  A61B2576/00

摘要： What is disclosed is a system and method for monitoring respiration of a subject or subject of interest using a thermal imaging system with single or multiple spectral bands set to a temperature range of a facial region of that person. Temperatures of extremities of the head and face are used to locate facial features in the captured thermal images, i.e., nose and mouth, which are associated with respiration. The RGB signals obtained from the camera are plotted to obtain a respiration pattern. From the respiration pattern, a rate of respiration is obtained. The system includes display and communication interfaces wherein alerts can be activated if the respiration rate falls outside a level of acceptability. The teachings hereof find their uses in an array of devices such as, for example, devices which monitor the respiration of an infant to signal the onset of a respiratory problem or failure.

摘要翻译： 公开的是使用具有设置到该人脸部区域的温度范围的单个或多个光谱带的热成像系统来监测受试者或感兴趣受试者的呼吸的系统和方法。 使用头部和脸部四肢的温度来定位与呼吸相关联的捕获的热图像即鼻子和嘴部中的面部特征。 绘制从照相机获得的RGB信号以获得呼吸模式。 从呼吸模式，获得呼吸率。 该系统包括显示和通信接口，其中如果呼吸速率落在可接受程度之外，则可以激活警报。 本发明的教导将其用于一系列装置中，例如监测婴儿的呼吸以指示呼吸问题或失败的发作的装置。

公开(公告)号：US08818030B2

公开(公告)日：2014-08-26

申请号：US13324368

申请日：2011-12-13

申请人： Yao Rong Wang ,  Lalit Keshav Mestha

发明人： Yao Rong Wang ,  Lalit Keshav Mestha

IPC分类号： G06K9/00

CPC分类号： G06K9/2018 ,  G06K9/6857 ,  G06K9/72 ,  G06K2209/09

摘要： A system and method for post-processing a multi-spectral image which has already been processed for pixel classification. A binary image is received which contains pixels that have been classified using a pixel classification method. Each pixel in the image has an associated intensity value and has a pixel value of 1 or 0 depending on whether the pixel has been classified as a material of interest or not. The image is divided into a plurality of blocks of pixels. On a block by block basis, pixel values in a block are changed according to a threshold-based filtering criteria such that pixels in the same block all have the same binary value. Once all the blocks have been processed, contiguous pixels having the same binary value are grouped to form separate objects. In such a manner, pixel classification errors in the post-processed binary image can be reduced.

摘要翻译： 一种用于后处理已经被处理用于像素分类的多光谱图像的系统和方法。 接收包含使用像素分类方法分类的像素的二进制图像。 图像中的每个像素具有相关联的强度值，并且具有像素值为1或0的取决于像素是否被分类为感兴趣的材料。 该图像被分成多个像素块。 在逐块的基础上，根据基于阈值的滤波准则改变块中的像素值，使得相同块中的像素都具有相同的二进制值。 一旦所有块被处理，具有相同二进制值的连续像素被分组以形成分离的对象。 以这种方式，可以减少后处理二进制图像中的像素分类误差。

公开(公告)号：US08441680B2

公开(公告)日：2013-05-14

申请号：US12507515

申请日：2009-07-22

申请人： Yao Rong Wang ,  Lalit Keshav Mestha

发明人： Yao Rong Wang ,  Lalit Keshav Mestha

IPC分类号： H04N1/60

CPC分类号： H04N1/407

摘要： A method for calibrating an image printing system that includes a plurality of parallel printers, where each of the printers has a minimum luminance value. The method includes determining a minimum luminance value profile for the plurality of printers in the image printing system based on the minimum luminance values of each of the printers in the image printing system, determining a black point compensation function based on the determined minimum luminance value profile, adjusting luminance values for input image data using the determined black point compensation function, and rendering, with the parallel printers, images on substrates based on the input image data with adjusted luminance levels.

摘要翻译： 一种用于校准包括多个平行打印机的图像打印系统的方法，其中每个打印机具有最小的亮度值。 该方法包括基于图像打印系统中的每个打印机的最小亮度值确定图像打印系统中的多个打印机的最小亮度值分布，基于所确定的最小亮度值分布来确定黑点补偿功能 使用确定的黑点补偿功能调整输入图像数据的亮度值，并且使用并行打印机，基于具有调整的亮度水平的输入图像数据来渲染基板上的图像。

公开(公告)号：US20120147194A1

公开(公告)日：2012-06-14

申请号：US12967775

申请日：2010-12-14

申请人： Yao Rong Wang ,  Zhigang Fan ,  Lalit Keshav Mestha

发明人： Yao Rong Wang ,  Zhigang Fan ,  Lalit Keshav Mestha

IPC分类号： H04N5/33 ,  G06K9/46

CPC分类号： H04N5/33 ,  G06K9/00369 ,  G06K9/00785 ,  G06K9/00805 ,  G06K9/00838 ,  G06K9/2018

摘要： What is disclosed is a novel system and method for determining the number of persons in an IR image obtained using an IR imaging system. The present method separates a human from the surrounding background via a set of particularly formed intensity ratios. Quantities derived from these ratios and threshold values are used to selectively classify whether a pixel in the IR image is from a human or from a non-human. Based upon the classification of the various pixels in the IR image, the number of persons is determined. Various embodiments are disclosed.

摘要翻译： 公开的是用于确定使用IR成像系统获得的IR图像中的人数的新颖系统和方法。 本方法通过一组特别形成的强度比将人与周围背景分离。 使用从这些比率和阈值导出的量来选择性地分类IR图像中的像素是来自人还是来自非人。 基于IR图像中的各种像素的分类，确定人数。 公开了各种实施例。

公开(公告)号：US07952759B2

公开(公告)日：2011-05-31

申请号：US12127473

申请日：2008-05-27

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

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

IPC分类号： H04N1/40 ,  G06F15/00

CPC分类号： H04N1/6022 ,  H04N1/603

摘要： This disclosure provides methods, apparatus and systems for generating a multidimensional printer profile for a color printer. Specifically, the disclosure provides a method to blend multiple GCR functions or strategies to produce a final GCR blended printer profile, for example a printer profile LUT.

摘要翻译： 本公开提供了用于生成彩色打印机的多维打印机配置文件的方法，装置和系统。 具体地，本公开提供了一种混合多个GCR功能或策略以产生最终的GCR混合打印机配置文件的方法，例如打印机配置文件LUT。