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1.发明申请AUTOFOCUS ASSIST LIGHTING USED FOR RANGEFINDING IN VERY LOW LIGHT CONDITIONS 审中-公开自动辅助照明用于在非常低的光条件下进行调整公开(公告)号：US20100158495A1
公开(公告)日：2010-06-24
申请号：US12544247
申请日：2009-08-20
申请人： John P. Spence
发明人： John P. Spence
IPC分类号： G03B13/00
摘要： Autofocus (AF) assist lighting can be useful as a camera rangefinder in low light conditions. When ambient light conditions are inadequate for determining camera-to-subject distance using through-the-lens autofocus (TTL-AF) procedures, the AF assist light is used to attempt to raise the light level enough that the camera-to-subject distance can be determined using TTL-AF. If a camera-to-subject distance is not determined when the AF assist light is used, a camera-to-subject distance based on tabulated values is determined using an empirical model of AF assist luminance increment versus distance. If a camera-to-subject distance can be determined using TTL-AF when the AF assist light is used, but the lighting conditions are inadequate, the camera-to-subject distance used for capturing an image is a weighted combination of the TTL-AF camera-to-subject distance and a camera-to-subject distance based on a set of tabulated values determined using an empircal model of AP assist luminance increment versus distance.
摘要翻译： 自动对焦（AF）辅助照明在低光照条件下可用作相机测距仪。 当环境光条件不足以使用透镜自动对焦（TTL-AF）程序确定相机对被摄体距离时，AF辅助光用于尝试提高足够的光线水平，以使相机对被摄体的距离 可以使用TTL-AF确定。 如果在使用AF辅助光时未确定摄像对象距离，则使用AF辅助亮度增量与距离的经验模型来确定基于列表值的摄像对象距离。 如果使用AF辅助灯时可以使用TTL-AF确定摄像对象距离，但是照明条件不足，则用于拍摄图像的相机对被摄体的距离是TTL- 基于使用AP辅助亮度增量与距离的双向模型确定的一组列表值的AF摄像机到被摄体距离和摄像对象距离。
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公开(公告)号：US06985270B1
公开(公告)日：2006-01-10
申请号：US09635600
申请日：2000-08-09
IPC分类号： H04N1/46
CPC分类号： G03C11/02
摘要： A method of calibrating digital images having pixels with pixel values includes the steps of: exposing a photographic element to form a latent image of a reference calibration target including a plurality of reference calibration patches; exposing the photographic element to form a latent image of a scene; processing the photographic element to form developed images from the latent images on the photographic element; scanning the developed images to produce digital images; measuring the pixel values of the digital image of the reference calibration target to produce a measured value for each of the reference calibration patches; obtaining an aim value and adjustment data corresponding to each reference calibration patch; generating image calibration corrections using the measured values, the aim values, and the adjustment data; and applying the image calibration corrections to the digital image of the scene.
摘要翻译： 校准具有像素值的像素的数字图像的方法包括以下步骤：曝光照相元件以形成包括多个参考校准片的参考校准目标的潜像; 曝光照相元件以形成场景的潜像; 处理照相元件以从照相元件上的潜像形成显影图像; 扫描图像以产生数字图像; 测量参考校准目标的数字图像的像素值，以产生每个参考校准块的测量值; 获得对应于每个参考校准片的目标值和调整数据; 使用测量值，目标值和调整数据生成图像校准校正; 以及将图像校准校正应用于场景的数字图像。
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3.发明授权Reference calibration patch arrangement to minimize exposure and measurement artifacts and maximize robustness to defects 失效参考校准贴片布置，以最小化曝光和测量伪影，并最大限度地提高缺陷的鲁棒性公开(公告)号：US06284445B1
公开(公告)日：2001-09-04
申请号：US09635257
申请日：2000-08-09
IPC分类号： G03C100
CPC分类号： G03B27/73
摘要： Reference calibration patches produced by a sequence of exposures on a photographic element, the photographic element exhibiting linear defects in a predominant direction, are arranged in a two dimensional array and exposures are assigned to the reference calibration patches in the array such that nearest neighbors in the predominant direction are not nearest neighbors in the exposure sequence, whereby the effects of a linear defect are reduced; and the maximum number of steps in the exposure sequence between a reference calibration patch and that of its nearest neighbors in any direction is less than a predetermined number, whereby the effects of flare are reduced.
摘要翻译： 通过照相元件上的曝光序列产生的参考校准贴片，在主要方向上呈现线性缺陷的照相元件被布置成二维阵列，并将曝光分配给阵列中的参考校准片，使得最接近的邻居 主要方向在曝光序列中不是最近的邻居，从而降低线性缺陷的影响; 并且在任何方向上的参考校准片和其最近邻的片段之间的曝光序列中的最大步数小于预定数，从而降低了耀斑的效果。
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4.发明授权
公开(公告)号：US5293539A
公开(公告)日：1994-03-08
申请号：US782940
申请日：1991-10-25
申请人： John P. Spence
发明人： John P. Spence
摘要： Apparatus and associated methods for providing accurate tone reproduction in an output image, specifically in terms of dot gain curve shape and scale, through a DDCP imaging chain (such as that implemented by a raster image processor (200), particularly a screening process (460) occurring therein, and a marking engine (130)) used in a direct digital color proofing (DDCP) system (100), based upon "Process" data (600) associated with that imaging chain and customer defined ("Aim") data (500). Specifically, monotonically interpolated, e.g. using monotone piecewise cubic interpolation, "Aim" and "Process" data for "all possible" inputs are determined from corresponding input "Aim" and "Process" data and then combined to yield a customized dot gain look-up table (460) that, for a given operating condition, reflects the "Aim" data modified by the inverse of the "Process" data, i.e. the latter reflecting the native dot gain characteristic of this imaging chain which occurs at that condition. Thereafter, incoming contone values for a proof image are routed through the look-up table to yield resulting modified values which, when subsequently printed by the DDCP imaging chain at that operating condition, will yield a proof image that exhibits only a desired "Aim" dot gain curve, without substantially any corruption, if at all, from the native dot gain characteristic of that chain. By obtaining and then interpolating appropriate "Process" and/or desired "Aim" data, for a common operating condition and then constructing a look-up table therefrom, the DDCP imaging chain can produce a proof image that, within physical limits occurring at that operating condition, will accurately exhibit only the desired "Aim" dot gain curve and hence the desired tone reproduction characteristic associated therewith.
摘要翻译： 用于通过DDCP成像链（例如由光栅图像处理器（200）实现的，特别是筛选过程（460））的输出图像中特别是以点增益曲线形状和尺度提供精确色调再现的装置和相关方法 ）和基于与所述成像链和客户定义的（“目标”）数据相关联的“处理”数据（600）在直接数字彩色打样（DDCP）系统（100）中使用的标记引擎（130） （500）。 具体地，单调插值。 使用单调分段三次插值，从相应的输入“Aim”和“Process”数据确定“所有可能”输入的“Aim”和“Process”数据，然后组合以产生定制的点增益查找表（460）， 对于给定的操作条件，反映了通过“处理”数据的倒数修改的“目标”数据，即后者反映了在该条件下发生的该成像链的本地点增益特性。 此后，验证图像的输入连续词值通过查找表进行路由以产生所得到的修改值，当在该操作条件下随后由DDCP成像链打印时，将产生仅显示期望的“目标”的校验图像， 点增益曲线，如果根本不存在来自该链的本地点增益特征的实质上任何损坏。 通过获得并随后内插适当的“过程”和/或期望的“目标”数据，对于共同的操作条件，然后从其构建查找表，DDCP成像链可以产生证明图像， 操作条件，将准确地仅显示所需的“目标”点增益曲线，并因此产生与之相关的期望色调再现特性。
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5.发明授权Color electrostatography process control by way of toner development characteristics 失效色彩发展特征的彩色电子显微镜工艺控制
公开(公告)号：US5122842A
公开(公告)日：1992-06-16
申请号：US636823
申请日：1991-01-02
申请人： Donald S. Rimai , John P. Spence
发明人： Donald S. Rimai , John P. Spence
CPC分类号： G03G15/0126 , G03G15/01
摘要： Information regarding a toner development characteristic associated with a development station is used to automatically adjust process control parameters associated with the other development stations to achieve quality color productions. A color electrostatographic image production device having a plurality of toner development stations, includes a toner development characteristic sensor at at least one of the development stations. A set of process control parameter control signals are produced for color separations produced by at least one other development station in response to the sensed development characteristic. Preferably, the toner development characteristic is the development rate of the development station or is a characteristic which influences the development rate of the development station.
摘要翻译： 关于与显影站相关联的调色剂显影特性的信息用于自动调整与其它显影站相关联的过程控制参数以实现高质量的色彩制作。 具有多个调色剂显影台的彩色静电图像制作装置包括至少一个显影台上的调色剂显影特性传感器。 产生一组过程控制参数控制信号，用于响应于感测到的显影特性，由至少一个其它显影站产生的分色。 优选地，调色剂显影特性是显影台的显影速度，或是影响显影台的显影速度的特征。
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公开(公告)号：US4708459A
公开(公告)日：1987-11-24
申请号：US838637
申请日：1986-03-11
CPC分类号： G03G15/01 , G03F3/105 , G03G15/04027 , G03G15/5041 , G03G2215/00042
摘要： Electrophotographic color proof generating apparatus includes a charger station, an exposure station, and a development station. Starting with color half-tone separations of artwork, the apparatus, using a unique method, electronically controls the exposure and potentials at the charger and development stations to generate a proof. The apparatus is designed to generate proofs which match the dot gain or loss and density of press sheets printed by a great variety of commercial presses starting with the same separations as are used to form the proofs. The separations are then modified until the apparatus generates a proof which is an acceptable reproduction of the artwork. The modified separations are then used to generate a press sheet on the commercial press which will be an acceptable reproduction of the artwork.
摘要翻译： 电子照相式色彩校正发生装置包括充电站，曝光站和显影站。 从艺术品的彩色半色调分离开始，该设备使用独特的方法，电子地控制充电器和开发站的曝光和电位，以产生证明。 该设备被设计成产生与由用于形成证明的相同间隔开始的各种各样的商业印刷机印刷的印刷纸的点增益或损失和密度相匹配的证明。 然后修改分离，直到设备产生作为艺术品的可接受的再现的证明。 然后使用经修改的分离物在商业印刷机上产生压片，这将是艺术品的可接受的再现。
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公开(公告)号：US20100002145A1
公开(公告)日：2010-01-07
申请号：US12495833
申请日：2009-07-01
IPC分类号： H04N5/14
CPC分类号： G06T5/40 , G06T5/009 , G06T2207/10016
摘要： A video signal includes a plurality of frames of image data. A single frame of image data or multiple frames of image data, one or more reduced resolution frames, or a portion or portions of one or more frames or reduced resolution frames can be analyzed to determine initial statistics. One or more correction operations are then performed on the initial statistics to generate initial correction values. The one or more correction operations include a balance correction operation, a flare correction operation, and a tonal correction operation. After the initial correction values are determined, a temporal filter is applied to the initial correction values to generate final correction values. Optimized image data is then generated by applying the final correction values to image data in one or more frames.
摘要翻译： 视频信号包括多个图像数据帧。 可以分析单帧图像数据或多帧图像数据，一个或多个减小分辨率帧，或一个或多个帧或缩小分辨率帧的一部分或多个部分，以确定初始统计。 然后对初始统计量执行一个或多个校正操作以产生初始校正值。 一个或多个校正操作包括平衡校正操作，闪光校正操作和色调校正操作。 在确定初始校正值之后，将时间滤波器应用于初始校正值以产生最终校正值。 然后通过将最终校正值应用于一个或多个帧中的图像数据来生成优化的图像数据。
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公开(公告)号：US06866199B1
公开(公告)日：2005-03-15
申请号：US09636058
申请日：2000-08-09
申请人： John T. Keech , John P. Spence
发明人： John T. Keech , John P. Spence
CPC分类号： H04N1/00015 , G03C11/02 , H04N1/00002 , H04N1/00031 , H04N1/00045 , H04N1/00053 , H04N1/00063
摘要： A method of locating a reference calibration patch on a photographic element, that includes the steps of: exposing the photographic element to form a latent image of a reference calibration target having a two dimensional barcode symbol with a finder feature and a reference calibration patch having a known spatial relation to the finder feature of the two-dimensional barcode symbol; processing the photographic element to form a density image from the latent image; scanning the density image to produce a digital image; locating the finder feature of the two-dimensional barcode symbol in the digital image; and locating the reference calibration patch relative to the finder feature in the digital image.
摘要翻译： 一种在照相元件上定位参考校准贴片的方法，其包括以下步骤：曝光照相元件以形成具有取景器特征的二维条形码符号的基准校准目标物的潜像，以及具有 与二维条形码符号的查找器特征的已知的空间关系; 处理照相元件以从潜像形成浓度图像; 扫描密度图像以产生数字图像; 将二维条形码符号的查找器特征定位在数字图像中; 以及相对于数字图像中的取景器特征定位参考校准片。
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公开(公告)号：US06280914B1
公开(公告)日：2001-08-28
申请号：US09635496
申请日：2000-08-09
IPC分类号： G03C100
摘要： A method of recording a reference calibration target on an APS format photographic element having a reserved area for use by photofinishing apparatus, and a perforation located relative to the reserved area, includes the steps of: generating a reference calibration target having a width no greater than 30.2 mm and a height no greater than 16.7 mm; locating the reserved area of the photographic element relative to the perforation; and recording the reference calibration target within the reserved area.
摘要翻译： 一种将参考校准目标记录在具有用于照相洗印装置的保留区域的APS格式照相元件和相对于保留区域定位的穿孔的方法，包括以下步骤：产生宽度不大于 30.2毫米，高度不大于16.7毫米; 定位照相元件相对于穿孔的保留区域; 并将参考校准目标记录在保留区域内。
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10.发明授权Technique for use in conjunction with an imaging system for providing an appearance match between two images and for calibrating the system thereto 失效与成像系统结合使用的技术，用于提供两个图像之间的外观匹配并用于校准系统
公开(公告)号：US5333069A
公开(公告)日：1994-07-26
申请号：US905598
申请日：1992-06-26
申请人： John P. Spence
发明人： John P. Spence
CPC分类号： H04N1/6052 , G03F3/101
摘要： Apparatus, and associated methods employed therein, for objectively providing an accurate appearance match between two depictions of a common images produced by two imaging systems (e.g. a target image (170) produced by one such system (160), e.g. a press sheet (178) generated by a printing press (168), which is to be matched by a replica image (150) produced by another such system (140), e.g. a proof (153) generated by a direct digital color halftone proofing system (143)) and thereby calibrate the performance of one imaging system, e.g. the proofing system, to that of the other system, e.g. the printing press. Specifically, measurement data, such as illustratively colorimetric CIELAB L*a*b* measurements, is obtained for the same portions of the press sheet and proof. This data is acquired in or transformed into a color space which encodes color information in a pre-defined manner that approximates human color perception. Thereafter, through use of a pre-determined model of the, e.g., proofing system, incorporated into pre-defined matching principles which objectively and quantitatively define an accurate appearance match between the depictions produced by both systems, operational settings for the proofing system, such as solid area densities and tint dot areas, are determined which will calibrate the response of the proofing system to that of the press. Consequently, tone and color rendition produced by the proofing system is modified to provide an accurate appearance match to that obtained, from a common image source, on the press, given judgmental color preferences of a human observer and performance limitations of the proofing system.
摘要翻译： 用于在两个成像系统（例如，由一个这样的系统（160）产生的目标图像（170））产生的两个图像的两个描绘之间客观地提供准确的外观匹配的装置和相关联的方法，例如压片（178） 由印刷机（168）生成的印刷机（168），该印刷机将被由另一个这样的系统（140）产生的复制图像（150）匹配，例如由直接数字彩色半色调打样系统（143）产生的证明（153）） 从而校准一个成像系统的性能，例如 打样系统，其他系统的打样系统。 印刷机。 具体地，对于压片的相同部分和证明，获得诸如示例性比色CIELAB L * a * b *测量的测量数据。 该数据被获取或变换成以预定义的方式编码颜色信息的颜色空间，其近似于人类的颜色感知。 此后，通过使用例如校样系统的预先确定的模型，其被并入预定义的匹配原则中，该原则客观地和定量地定义了由两个系统产生的描绘之间的精确外观匹配，用于校样系统的操作设置 确定固体面积密度和色调点区域，这将校准校样系统与印刷机的响应。 因此，校正系统产生的色调和颜色再现被修改为提供与普通图像源，印刷机，给定的人类观察者的判断性颜色偏好以及校样系统的性能限制所获得的精确外观匹配。
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