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    • 11. 发明申请
    • A METHOD, AN APPARATUS AND A COMPUTER-READABLE MEDIUM FOR PROCESSING A NIGHT VISION IMAGE DATASET
    • 一种用于处理夜视图像数据的方法,装置和计算机可读介质
    • WO2008019846A3
    • 2009-03-05
    • PCT/EP2007007229
    • 2007-08-16
    • TOYOTA MOTOR EUROP NVLUND UNIVERSITYMALM HENRIKWARRANT ERICAMBECK-MADSEN JONASYANAGIHARA HIROMICHIOSKARSSON MAGNUS
    • MALM HENRIKWARRANT ERICAMBECK-MADSEN JONASYANAGIHARA HIROMICHIOSKARSSON MAGNUS
    • G06T5/00
    • G06T5/002G06T5/008G06T5/40G06T2207/10016
    • A method is disclosed for enhancing the quality of an image dataset, such as, e.g., reducing the noise in a noisy image data set and increasing the contrast in the image data set. The method may be used for processing a sequence of image datasets, e.g. night vision image datasets, wherein said sequence comprises at least two image datasets each having at least two pixels, and wherein each pixel has an intensity value. The method comprises calculating a structure tensor for each pixel in an image dataset comprised in the sequence of image datasets; calculating values in a summation kernel based on said structure tensor for each pixel in said image dataset; calculating a weighted intensity value for each pixel in said first image dataset, using as weights the values in said summation kernel; storing said weighted intensity value for each pixel in said image dataset as a processed intensity value for each corresponding pixel in a processed output image dataset; rotating a local coordinate system in which the summation kernel is described resulting in that the coordinate axes of said local coordinate system coincide with the directions of the eigenvectors of said structure tensor, where said eigenvectors are described in the global coordinate system of the image dataset, and scaling the coordinate axes of the local coordinate system in which the summation kernel is described by an amount related to the eigenvalues of the structure tensor via a width function W(? i) = si, and wherein said eigenvalues depend on the amount of intensity variation in the direction of their corresponding eigenvectors, the width function being a decreasing function such that w(0) = smax and lima?8w= smin. An apparatus and a computer readable medium are also provided.
    • 公开了一种用于增强图像数据集的质量的方法,例如降低噪声图像数据集中的噪声并增加图像数据集中的对比度。 该方法可以用于处理图像数据集的序列,例如, 夜视图像数据集,其中所述序列包括至少两个具有至少两个像素的图像数据集,并且其中每个像素具有强度值。 该方法包括:计算包含在图像数据集序列中的图像数据集中的每个像素的结构张量; 基于所述图像数据集中的每个像素的所述结构张量来计算求和核中的值; 使用所述求和核中的值作为权重来计算所述第一图像数据集中的每个像素的加权强度值; 将所述图像数据集中的每个像素的所述加权强度值存储为处理的输出图像数据集中的每个相应像素的处理强度值; 旋转其中描述了求和核的局部坐标系,导致所述局部坐标系的坐标轴与所述结构张量的特征向量的方向一致,其中所述特征向量在图像数据集的全局坐标系中被描述, 并且通过宽度函数W(ωi)= si,缩放与求和结构张量的特征值相关的量的求和核的局部坐标系的坐标轴,其中所述特征值取决于强度的量 其相应特征向量方向的变化,宽度函数是递减函数,使得w(0)= smax和lima?8w = smin。 还提供了一种装置和计算机可读介质。
    • 13. 发明申请
    • IMAGE PROCESSING METHODS AND APPARATUS
    • 图像处理方法和装置
    • WO2007042844A2
    • 2007-04-19
    • PCT/GB2006050325
    • 2006-10-12
    • UNIV CAMBRIDGE TECHCIPOLLA ROBERTOFAVARO PAOLOFUNAYAMA RYUJIVOGIATZIS GEORGEYANAGIHARA HIROMICHI
    • CIPOLLA ROBERTOFAVARO PAOLOFUNAYAMA RYUJIVOGIATZIS GEORGEYANAGIHARA HIROMICHI
    • G06T7/00
    • G06T7/579G06T7/557G06T7/586G06T2207/10021G06T2207/30264
    • This invention is generally concerned with image processing methods, apparatus and computer program code, and more particularly with characterising a set of images in order to determine their respective illumination, for example for recovering a three- dimensional shape of an illuminated object. A method of determining data characterising a set of images of an object, the method comprising: inputting data from a first set of images of said object captured from a plurality of different positions; determining frontier point data from said data for said first set of images and data defining said image capture positions, said frontier point data defining a plurality of frontier points on said object, and for each said frontier point, a direction of a normal to the surface of the object at the frontier point; inputting data from a second set of captured images of said object, said second set of images having substantially the same viewpoint and different illumination conditions; and determining data characterising said second set of images using said data for said second set of images and said frontier point data, said image set characterising data comprising object reflectance parameter data (ß) and, for each image of said second set, illumination data (L) comprising data defining an illumination direction and illumination intensity for the image.
    • 本发明通常涉及图像处理方法,装置和计算机程序代码,更具体地涉及表征一组图像以便确定它们各自的照明,例如用于恢复照明物体的三维形状。 一种确定表征对象的一组图像的数据的方法,所述方法包括:从多个不同位置捕获的所述对象的第一组图像中输入数据; 从所述第一组图像的数据和定义所述图像捕捉位置的数据确定边界点数据,所述边界点数据限定所述物体上的多个边界点,并且对于每个所述边界点,所述边界的法线方向 在边界点的物体; 从所述对象的第二组拍摄图像输入数据,所述第二组图像具有基本上相同的视点和不同的照明条件; 以及使用所述第二组图像和所述边界点数据的所述数据确定表征所述第二组图像的数据,所述图像集表征数据包括对象反射参数数据(ß),并且对于所述第二组的每个图像照明数据 L)包括限定图像的照明方向和照明强度的数据。
    • 15. 发明申请
    • SUBMILLIMETER RADAR USING SIGNALS REFLECTED FROM MULTIPLE ANGLES
    • 使用从多角度反射的信号的子雷达雷达
    • WO2011048194A1
    • 2011-04-28
    • PCT/EP2010/065905
    • 2010-10-21
    • TOYOTA MOTOR EUROPE NV/SAYANAGIHARA, HiromichiSOGA, MinekiMERKEL, Harald, Franz, Arno
    • YANAGIHARA, HiromichiSOGA, MinekiMERKEL, Harald, Franz, Arno
    • G01S13/00G01S13/87
    • G01S13/003G01S13/874
    • A submillimeter wavelength radar system has a receiver (20, 27, 90) for receiving and downconverting signals from content in a field of view of the system and a signal processor (30) arranged to determine information about the content from the downconverted signals, the radar system being arranged to obtain signals of the same points in the field of view from different illumination or receiving angles by having multiple illumination or receive positions, and the signal processor being arranged to use the determined information from the signals from the two or more angles to determine location or orientation of the content. By using information from different angles, it becomes possible to address or overcome the drawback of submillimeter wavelengths that most of the reflection is specular and so only surfaces of an object facing the radar system are detectable, meaning that many objects are unrecognisable.
    • 亚毫米波长雷达系统具有接收器(20,27,90),用于在系统的视野中从内容接收和下变频信号;以及信号处理器(30),被布置为从下变频信号确定关于内容的信息, 雷达系统被布置成通过具有多个照明或接收位置从不同的照明或接收角度获得视野中的相同点的信号,并且信号处理器被布置为使用来自两个或更多个角度的信号的确定的信息 以确定内容的位置或方向。 通过使用来自不同角度的信息,可以解决或克服亚毫米波长的缺点,大多数反射是镜面的,因此只有面向雷达系统的物体的表面才能被检测到,这意味着许多物体是不可识别的。
    • 19. 发明申请
    • ROBUST INTEREST POINT DETECTOR AND DESCRIPTOR
    • 可靠的兴趣点检测器和描述符
    • WO2007128452A3
    • 2008-05-22
    • PCT/EP2007003811
    • 2007-04-30
    • TOYOTA MOTOR EUROP NVUNIV LEUVEN KATHEIDGENOESS TECH HOCHSCHULEFUNAYAMA RYUKIYANAGIHARA HIROMICHIVAN GOOL LUCTUYTELAARS TINNEBAY HERBERT
    • FUNAYAMA RYUKIYANAGIHARA HIROMICHIVAN GOOL LUCTUYTELAARS TINNEBAY HERBERT
    • G06K9/46
    • G06K9/4671G06K9/4614G06K9/56
    • Methods and apparatus for operating on images are described, in particular methods and apparatus for interest point detection and/or description working under different scales and with different rotations, e.g. for scale- invariant and rotation-invariant interest point detection and/or description. The present invention can provide improved or alternative apparatus and methods for matching interest points either in the same image or in a different image. The present invention can provide alternative or improved software for implementing any of the methods of the invention. The present invention can provide alternative or improved data structures created by multiple filtering operations to generate a plurality of filtered images as well as data structures for storing the filtered images themselves, e.g. as stored in memory or transmitted through a network. The present invention can provide alternative or improved data structures including descriptors of interest points in images, e.g. as stored in memory or transmitted through a network as well as datastructures associating such descriptors with an original copy of the image or an image derived therefrom, e.g. a thumbnail image.
    • 描述了用于在图像上操作的方法和装置,特别是用于在不同尺度和不同旋转下进行兴趣点检测和/或描述的方法和装置,例如, 用于尺度不变和旋转不变的兴趣点检测和/或描述。 本发明可以提供用于在相同图像或不同图像中匹配兴趣点的改进的或替代的装置和方法。 本发明可以提供用于实现本发明的任何方法的替代或改进的软件。 本发明可以提供通过多次滤波操作产生的替代或改进的数据结构,以产生多个滤波图像,以及用于存储滤波图像本身的数据结构,例如, 存储在存储器中或通过网络传输。 本发明可以提供替代或改进的数据结构,包括图像中的兴趣点的描述符,例如。 如存储在存储器中或通过网络传输的数据结构以及将这样的描述符与图像的原始副本或从其导出的图像相关联的数据结构。 缩略图。