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    • 21. 发明申请
    • METHOD, AN APPARATUS AND A COMPUTER-READABLE MEDIUM FOR PROCESSING A NIGHT VISION IMAGE DATASET
    • 方法,装置和用于处理夜视图像数据的计算机可读介质
    • US20100284626A1
    • 2010-11-11
    • US12377793
    • 2007-08-16
    • Henrik MalmEric WarrantJonas Ambeck-MadsenHiromichi YanagiharaMagnus Oskarsson
    • Henrik MalmEric WarrantJonas Ambeck-MadsenHiromichi YanagiharaMagnus Oskarsson
    • G06K9/40
    • 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(λi)=σi, 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)=σmax and lima→∞w=σmin. 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对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, 以及通过宽度函数W(λi)=&sgr; i,将与所述结构张量的特征值相关的量描述所述求和核的所述局部坐标系的坐标轴,并且其中所述特征值取决于 其相应特征向量方向的强度变化,宽度函数是递减函数,使得w(0)=&sgr; max和lima→∞w=&sgr; min。 还提供了一种装置和计算机可读介质。
    • 25. 发明授权
    • Method of injecting fuel and a fuel injection device of an internal
combustion engine
    • 喷射燃料的方法和内燃机的燃料喷射装置
    • US4180021A
    • 1979-12-25
    • US799098
    • 1977-05-20
    • Hiromichi Yanagihara
    • Hiromichi Yanagihara
    • F02P13/00F02B1/04F02B19/08F02B19/10F02B19/12F02D3/00F02M59/26F02F3/28
    • F02B19/1085F02B1/04Y02T10/125
    • Disclosed are a method of injecting fuel and a fuel injection device in an internal combustion engine comprising a main chamber and an auxiliary chamber. An annular raised portion is formed on the inner wall of the auxiliary chamber and divides the auxiliary chamber into a first auxiliary chamber and a second auxiliary chamber. A connecting passage communicating the main chamber and the auxiliary chamber opens into the second auxiliary chamber tangentially to the inner wall of the second auxiliary chamber. A recess is formed in the second auxiliary chamber beneath the annular raised portion at a position located opposite to the inner wall to which the connecting passage is tangentially connected with respect to the axis of the auxiliary chamber. The nozzle of the fuel injector is directed to the recess so as to form a rich air-fuel mixture in the recess. The spark gap of the spark plug is located in the vicinity of the recess for igniting the rich air-fuel mixture formed in the recess. When the engine is operating under a heavy load, the fuel injection start timing is set at a constant timing, while, when the engine is operating under a light load, the fuel injection complete timing is set at a constant timing.
    • 公开了一种在包括主室和辅助室的内燃机中喷射燃料和燃料喷射装置的方法。 在辅助室的内壁上形成环形凸起部分,并将辅助室分成第一辅助室和第二辅助室。 连通主室和辅助室的连接通道与第二辅助室的内壁相切地切向第二辅助室。 在第二辅助室中,在环形隆起部分下方的位于与内壁相对的位置处形成凹部,连接通道相对于辅助室的轴线切向连接到该内壁。 燃料喷射器的喷嘴被引导到凹部,以在凹部中形成浓的空气 - 燃料混合物。 火花塞的火花隙位于凹部附近,用于点燃形成在凹部中的富空燃混合物。 当发动机在重负载下运行时,燃料喷射开始定时被设定在恒定的定时,而当发动机在轻负载下运行时,燃料喷射完成定时被设定在恒定的定时。
    • 26. 发明授权
    • Antenna having sparsely populated array of elements
    • 天线具有稀疏的元素阵列
    • US08482476B2
    • 2013-07-09
    • US13202157
    • 2010-10-21
    • Hiromichi YanagiharaMineki SogaHarald Franz Arno Merkel
    • Hiromichi YanagiharaMineki SogaHarald Franz Arno Merkel
    • H01Q13/10
    • H01Q21/06Y10T29/49016
    • An antenna (80,90) has a one dimensional or multidimensional array of elements (20,40), wherein spacings between successive elements of at least part of the array are non periodic and correspond to a series of multiples of a unit spacing, the multiples following a Fibonacci sequence. Two dimensional arrays can be arranged as a Fibonacci grid or as a Fibonacci square tiling. The number of elements can be reduced for a given measure of resolution, while still enabling the signal being transmitted or received to have a peak in a single unique direction and thus form a beam. Furthermore, since there will be some elements clustered close together and a few which are well spaced, it can be more suitable for vehicles (30) than a regularly spaced array. It can be used as a transmit antenna or as a receive antenna for a submillimeter radar system.
    • 天线(80,90)具有元素(20,40)的一维或多维阵列,其中阵列的至少一部分的连续元件之间的间隔是非周期性的并且对应于单位间隔的一系列倍数, 斐波纳契序列之后的倍数。 二维阵列可以布置为斐波纳契网格或斐波纳契方块。 可以针对给定的分辨率测量来减少元件的数量,同时仍然使得被发送或接收的信号在单个唯一方向上具有峰值,并因此形成一个光束。 此外,由于将存在一些聚集在一起的几个元件和几个间隔好的元件,所以它可以比规则间隔的阵列更适合于车辆(30)。 它可以用作发射天线或用作亚毫米雷达系统的接收天线。