Cryptographic method for color images and digital cinema

    公开(公告)号:US06985585B2

    公开(公告)日:2006-01-10

    申请号:US09822960

    申请日:2001-03-30

    CPC classification number: H04K1/00 G09C5/00 H04L9/3066 H04L9/3093

    Abstract: A method for the encryption and decryption of digital images based on cyclotomic polynomials and radiometric expressions comprising the steps of generating an encrypting transform, partitioning the digital images into data blocks, along with encrypting, transmitting, and decrypting the data blocks. Three common radiometric expressions are fundamental metamers, black metamers, and radiometric functions. In one embodiment, the mathematical equation that represents the encrypting transform is a cyclotomic polynomial. In another embodiment, a cyclotomic polynomial is used to calculate the coefficients of the mathematical equation that represents the encrypting transform. In other embodiments, the encrypting transform is generated with a radiometric expression, and the encrypted data blocks are calculated with a radiometric expression.

    Mixed-element stitching and noise reduction system
    2.
    发明授权
    Mixed-element stitching and noise reduction system 失效
    混合元件拼接和降噪系统

    公开(公告)号:US06781620B1

    公开(公告)日:2004-08-24

    申请号:US09270285

    申请日:1999-03-16

    Inventor: Michael P. Keyes

    CPC classification number: H04N1/40 H04N1/0464 H04N1/46 H04N2201/0404

    Abstract: A mixed-element stitching and noise reduction system includes apparatus and methods for producing an image dataset having a reduced noise content without substantially impacting image reproduction accuracy. Such noise reduction is provided by replacing a portion of a first, higher noise image dataset with a portion of a second, lower noise dataset. In a preferred embodiment, two image datasets comprising a color-stitched image and a luminance image are received from a DFP image capturing system. The received images are preferably separately stitched and separately converted to a color-space in which a luminance data channel is separated from image color information. The luminance channel of the luminance image is then preferably substituted for the luminance channel of the color-stitched image. More preferably, a log-time stitching technique is used and the stitched images are each converted to an L*a*b* color space.

    Abstract translation: 混合元件拼接和降噪系统包括用于产生具有降低的噪声含量而不显着影响图像再现精度的图像数据集的装置和方法。 通过用第二较低噪声数据集的一部分替换第一较高噪声图像数据集的一部分来提供这种降噪。 在优选实施例中,从DFP图像捕获系统接收包括彩色拼接图像和亮度图像的两个图像数据集。 接收到的图像优选地被单独地缝合并分开地转换成其中亮度数据信道与图像颜色信息分离的颜色空间。 优选地,亮度图像的亮度通道被代替色拼接图像的亮度通道。 更优选地,使用对数时间拼接技术,并且将拼接图像各自转换为L * a * b *颜色空间。

    Liquid crystal compounds having a chiral fluorinated terminal portion
    3.
    发明授权
    Liquid crystal compounds having a chiral fluorinated terminal portion 失效
    具有手性氟化末端部分的液晶化合物

    公开(公告)号:US06309561B1

    公开(公告)日:2001-10-30

    申请号:US08998400

    申请日:1997-12-24

    Abstract: Fluorine-containing, chiral liquid crystal compounds comprise (a) a chiral fluorochemical terminal portion comprising (i) at least one chiral center, which can optionally be heteroatom-substituted; (ii) a terminal fluoroalkyl, fluoroether, perfluoroalkyl, or perfluoroether group; and (iii) an alkylene or fluoroalkylene group optionally containing at least one catenary ether oxygen atom; (b) a chiral or achiral terminal portion consisting of a hydrocarbon or hydrocarbon ether group, and, when chiral, comprising at least one chiral center, which can optionally be heteroatom-substituted; and (c) a central core connecting the terminal portions; the alkylene or fluoroalkylene group of the chiral fluorochemical terminal portion having at least 3 in-chain atoms and being located between the chiral center of the chiral fluorochemical terminal portion and the central core. The compounds have smectic mesophases or latent smectic mesophases and are useful, for example, in liquid crystal display devices.

    Abstract translation: 含氟手性液晶化合物包含(a)手性含氟末端部分,其包含(i)至少一个可任选被杂原子取代的手性中心; (ii)末端氟代烷基,氟代醚,全氟烷基或全氟醚基团; 和(iii)任选地含有至少一个链状醚氧原子的亚烷基或氟亚烷基; (b)由烃或烃醚基组成的手性或非手性末端部分,以及当手性包含至少一个手性中心时,该手性中心可任选被杂原子取代; 和(c)连接端子部分的中心芯部; 手性含氟末端部分的亚烷基或氟亚烷基具有至少3个链内原子并且位于手性含氟末端部分的手性中心和中心核心之间。 这些化合物具有近晶中间相或潜在的近晶中间相,并且可用于例如液晶显示装置。

    Sharpening algorithm adjusted for measured exposure of photofinishing
images
    4.
    发明授权
    Sharpening algorithm adjusted for measured exposure of photofinishing images 失效
    针对照相洗印图像的测量曝光调整锐化算法

    公开(公告)号:US6091861A

    公开(公告)日:2000-07-18

    申请号:US17634

    申请日:1998-02-03

    CPC classification number: G06T5/004 G06T5/20 H04N1/58 H04N1/6094

    Abstract: A method for processing a digital image comprising the steps of: providing a digital image from an original image on exposed photographic media; determining the exposure of the original image; and based on the exposure, sharpening the digital image using an image sharpening system. A method of processing a digital image comprising the steps of: providing a digital image from an original image on exposed photographic media; determining the type of the photographic media and magnification to produce the final image; and based on the type of the photographic media, sharpening the digital image using an image sharpening system. A method of processing a digital image comprising the steps of: providing a digital image from an original image on exposed photographic media and magnification to produce the final image; determining the type of the photographic media; determining the exposure of the original image; deriving the print grain index from the media type, magnification, and exposure of the original image; determining the sharpening level of the digital image based on the print grain index; and sharpening the digital image using an image sharpening system.

    Abstract translation: 一种用于处理数字图像的方法,包括以下步骤:在曝光的照相介质上从原始图像提供数字图像; 确定原始图像的曝光; 并且基于曝光,使用图像锐化系统来锐化数字图像。 一种处理数字图像的方法,包括以下步骤:在曝光的照相介质上从原始图像提供数字图像; 确定照相介质的类型和放大以产生最终图像; 并且基于照相介质的类型,使用图像锐化系统来锐化数字图像。 一种处理数字图像的方法,包括以下步骤:在曝光的照相介质和放大倍率上从原始图像提供数字图像以产生最终图像; 确定照相介质的类型; 确定原始图像的曝光; 从原始图像的介质类型,放大倍率和曝光中导出打印纹理指数; 基于打印粒度指数确定数字图像的锐化程度; 并使用图像锐化系统锐化数字图像。

    Tristable liquid crystal display device
    5.
    发明授权
    Tristable liquid crystal display device 失效
    三态液晶显示装置

    公开(公告)号:US6057007A

    公开(公告)日:2000-05-02

    申请号:US131711

    申请日:1998-08-10

    Abstract: A tristable liquid crystal display device comprises (a) first and second opposed substrates, at least one bearing an alignment coating and each bearing at least one electrode so as to define one or a plurality of pixels; (b) a tilted smectic or induced tilted smectic liquid crystal composition disposed between the substrates; and (c) a pair of orthogonally disposed polarizers, each having a polarization axis, one polarization axis being aligned with the zero field optical axis of a tilted smectic or induced tilted smectic mesophase of the liquid crystal composition; wherein the substrates are disposed so as to provide an alignment of the liquid crystal composition, the composition comprising at least one chiral liquid crystal compound that can be represented by the following formula:R--M--N--(P).sub.b --OCH.sub.2 C*HF--CH.sub.2 O(CH.sub.2).sub.a R.sub.f(I)where M, N, and P are independently selected from the group consisting of aromatic, heteroaromatic, alicyclic, heteroalicyclic, substituted aromatic, substituted heteroaromatic, substituted alicyclic, and substituted heteroalicyclic rings, the individual rings being fused or non-fused, and the rings being connected with each other by a covalent bond or an organic linking group; R is alkyl, alkenyl, alkoxy, or alkoxy alkylene; * designates a chiral center; a is an integer of 0 or 1; b is an integer of 0 or 1; and Rf is a perfluoroether group.

    Abstract translation: 三重液晶显示装置包括(a)第一和第二相对的基板,至少一个轴承对准涂层,并且每个轴承至少一个电极以限定一个或多个像素; (b)设置在基板之间的倾斜的近晶或诱导倾斜的近晶液晶组合物; 和(c)一对正交设置的偏振器,每个具有偏振轴,一个偏振轴与液晶组合物的倾斜的近晶或诱导的倾斜的近晶中间相的零场光轴对齐; 其特征在于,所述基板配置为提供所述液晶组合物的取向,所述组合物含有可由下式表示的至少一种手性液晶化合物:RMN-(P)b-OCH2C * HF-CH2O(CH2 )aRf(I)其中M,N和P独立地选自芳族,杂芳族,脂环族,杂脂环,取代的芳族,取代的杂芳族,取代的脂环族和取代的杂脂环, 并且所述环通过共价键或有机连接基彼此连接; R是烷基,烯基,烷氧基或烷氧基亚烷基; *指定手性中心; a是0或1的整数; b为0或1的整数; Rf为全氟醚基。

    Method and system for using calibration patches in electronic film processing
    6.
    发明授权
    Method and system for using calibration patches in electronic film processing 失效
    在电子薄膜加工中使用校准贴片的方法和系统

    公开(公告)号:US06439784B1

    公开(公告)日:2002-08-27

    申请号:US09640853

    申请日:2000-08-17

    CPC classification number: G03B27/32 G03D5/06

    Abstract: A method and system (100) for using reference patches (108) to enhance electronic film processing of a scene image (104) contained on a first area of a film (112) include creating a reference patch (108) on a second area of the film (112); coating the film (112) with a developing solution to form a scene image (104) and a patch image (108); scanning the film (112) coated with the developing solution to generate signals corresponding to digital representations of the scene image (104) and the patch image (108); calculating image processing parameters from the signals associated with the patch image (108); and processing the digital representations of the scene image (104) using the image processing parameters calculated from the patch image (108) to produce color values which more accurately reflect the original scene and which are pleasing to the eye.

    Abstract translation: 一种用于使用参考补片(108)来增强包含在胶卷(112)的第一区域上的场景图像(104)的电子胶片处理的方法和系统(100)包括在第一区域 胶片(112); 用显影液涂覆薄膜(112)以形成场景图像(104)和斑块图像(108); 扫描涂有显影液的胶片(112)以产生对应于场景图像(104)和斑块图像(108)的数字表示的信号; 从与所述补丁图像(108)相关联的信号计算图像处理参数; 以及使用从补丁图像(108)计算出的图像处理参数来处理场景图像(104)的数字表示,以产生更准确地反映原始场景并且对于令人愉悦的颜色值。

    Apparatus and method for mounting imagers on stress-sensitive polarizing beam splitters
    9.
    发明授权
    Apparatus and method for mounting imagers on stress-sensitive polarizing beam splitters 失效
    将成像器安装在应力敏感偏振分束器上的装置和方法

    公开(公告)号:US07387391B2

    公开(公告)日:2008-06-17

    申请号:US11133764

    申请日:2005-05-20

    CPC classification number: G03B21/14 G03B21/2073 H04N9/3144 H04N9/317

    Abstract: An optical device that includes an optical element, an imager, and a prism bracket. The optical element includes an optical element having first and second prisms coupled together. The imager is arranged adjacent to the first prism and configured to receive light from or to transmit light to the optical element, wherein the first prism is spaced between the second prism and the first imager. The prism bracket is coupled between the second prism and the first imager to hold the first imager in a desired positional alignment relative to the optical element. The optical device may further include additional sets of an optical element, imager, and prism bracket, wherein all of the sets are coupled to a color light combiner.

    Abstract translation: 一种包括光学元件,成像器和棱镜支架的光学装置。 光学元件包括具有耦合在一起的第一和第二棱镜的光学元件。 成像器布置成与第一棱镜相邻并且被配置为从光学元件接收光或透射光,其中第一棱镜在第二棱镜和第一成像器之间间隔开。 棱镜支架联接在第二棱镜和第一成像器之间,以将第一成像器相对于光学元件保持在期望的位置对准。 光学装置还可以包括另外的一组光学元件,成像器和棱镜支架,其中所有的组都耦合到彩色光合并器。

    Method and system for selective enhancement of image data
    10.
    发明授权
    Method and system for selective enhancement of image data 有权
    用于选择性增强图像数据的方法和系统

    公开(公告)号:US06915021B2

    公开(公告)日:2005-07-05

    申请号:US09728365

    申请日:2000-11-30

    CPC classification number: H04N1/409 H04N1/6072

    Abstract: A method and apparatus for selectively applying image enhancement processing to parts of an image. In one embodiment, spatial processing transformations, such as sharpening for example, are reduced or bypassed for pixels having color code values within a range known to be adversely affected by the spatial processing transformations. In another embodiment, color correction processing transformations are bypassed for pixels having color code values within a neutral color range. These neutral colors may have a gray-correction transformation applied in order to better separate the neutral colors from the other colors. According to another embodiment, color code values for pixels are transformed to two or more different color spaces. If a color correction transformation will have adverse affects on a pixel in one color space, corrected data from a different color space can be utilized for the pixel.

    Abstract translation: 一种用于对图像的部分选择性地应用图像增强处理的方法和装置。 在一个实施例中,对于具有已知受到空间处理变换的不利影响的范围内的颜色代码值的像素,空间处理变换(例如,锐化)被减少或旁路。 在另一个实施例中,对于具有在中性色范围内的颜色代码值的像素,旁路颜色校正处理变换。 这些中性色可能会应用灰度校正变换,以便更好地将中性色与其他颜色分开。 根据另一实施例,用于像素的颜色代码值被变换为两个或更多个不同的颜色空间。 如果颜色校正变换将对一个颜色空间中的像素产生不利影响,则可以对该像素利用来自不同颜色空间的校正数据。

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