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61.发明授权Method and apparatus to extend the effective dynamic range of an image sensing device and use residual images 有权延长图像感测装置的有效动态范围并使用残留图像的方法和装置公开(公告)号：US06943831B2
公开(公告)日：2005-09-13
申请号：US09768695
申请日：2001-01-24
IPC分类号： H04N1/41 , H04N1/64 , H04N5/225 , H04N5/235 , H04N5/355 , H04N5/77 , H04N9/04 , H04N9/07 , H04N9/804 , H04N5/228 , H04N3/14 , H04N5/335
摘要： An image capture system includes a sparsely sampled extended dynamic range image sensing device having fast photosites interspersed with slow photosites for producing a sparsely sampled high resolution digital image having fast pixel values produced by the fast photosites and slow pixel values produced by the slow photosites. A processor employs the slow pixel values to expand the dynamic range of the fast pixel values in the sparsely sample high resolution digital image to form a full resolution digital image having an extended dynamic range. A color encoder reduces the dynamic range of the full resolution digital image to fit within the dynamic range of a storage color space having a dynamic range less than that of the full resolution digital image to form a limited dynamic range digital image represented in the storage color space.
摘要翻译： 图像捕获系统包括一个稀疏采样的扩展动态范围图像感测装置，其具有散布有慢光斑的快速光斑，用于产生具有由快速光斑产生的快速像素值和由慢光斑产生的慢像素值的稀疏采样的高分辨率数字图像。 处理器使用慢像素值来扩展稀疏样本高分辨率数字图像中的快速像素值的动态范围，以形成具有扩展动态范围的全分辨率数字图像。 彩色编码器减小全分辨率数字图像的动态范围，以适应动态范围小于全分辨率数字图像的动态范围的存储颜色空间的动态范围内，以形成以存储颜色表示的受限动态范围数字图像 空间。
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62.发明授权公开(公告)号：US06822760B1
公开(公告)日：2004-11-23
申请号：US09543652
申请日：2000-04-05
IPC分类号： B41B100
CPC分类号： H04N1/6058 , G06T11/001 , H04N1/34
摘要： A method for processing an extended color gamut digital image so as to represent the extended color gamut digital image in a storage color space having a limited color gamut digital image and for paying for such processed digital image including a user sending or authorizing the sending of an extended color gamut digital image to a processing site where the extended color gamut digital image is to be processed. Processing such extended color gamut digital image at the processing site can be accomplished by adjusting the color values of the extended color gamut digital image to fit within the limited color gamut to form a limited color gamut digital image, and representing the limited color gamut digital image in the storage color space. Further, by determining one of more residual images representing differences between the extended color gamut digital image and the limited color gamut digital image, and associating the one of or more residual image(s) with the limited color gamut digital image in the storage color space such that the associated residual image(s) and the limited color gamut digital image are adapted to be used to form a reconstructed extended color gamut digital image. The method also includes the user making payment, and making the processed extended color gamut digital image available to the user via a communications network.
摘要翻译： 一种用于处理扩展色域数字图像以便在具有有限色域数字图像的存储颜色空间中表示扩展色域数字图像的方法，并且用于支付这种处理的数字图像，该处理的数字图像包括用户发送或授权发送 扩展色域数字图像到要处理扩展色域数字图像的处理站点。 可以通过调整扩展色域数字图像的颜色值以适应有限的色域来形成有限的色域数字图像，并且表示有限的色域数字图像来处理处理部位处理这样的扩展色域数字图像 在存储颜色空间。 此外，通过确定表示扩展色域数字图像和有限色域数字图像之间的差异的更多残差图像之一，并且将一个或多个残留图像与有限色域数字图像相关联在存储颜色空间中 使得相关联的残留图像和有限色域数字图像适于用于形成重建的扩展色域数字图像。 该方法还包括用户进行支付，并且使经处理的扩展色域数字图像经由通信网络可供用户使用。
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63.发明授权Using a residual image formed from a clipped limited color gamut digital image to represent an extended color gamut digital image 有权使用由限制的有限色域数字图像形成的残差图像来表示扩展色域数字图像公开(公告)号：US06301393B1
公开(公告)日：2001-10-09
申请号：US09489367
申请日：2000-01-21
IPC分类号： H04N164
CPC分类号： G06T11/001
摘要： A method for representing a digital image having color values with an extended color gamut in a storage color space having a limited color gamut comprising the steps of: adjusting the color values of the extended color gamut digital image to fit within the limited color gamut to form a limited color gamut digital image; representing the limited color gamut digital image in the storage color space; determining a clipped limited color gamut digital image in which highly quantized regions in the limited color gamut digital image have been clipped; determining a residual image representing a difference between the extended color gamut digital image and the clipped limited color gamut digital image; and associating the residual image with the limited color gamut digital image in the storage color space such that the associated residual image and the limited color gamut digital image in the storage color space are adapted to be used to form a reconstructed extended color gamut digital image.
摘要翻译： 一种用于在具有有限色域的存储颜色空间中表示具有扩展色域的具有颜色值的数字图像的方法，包括以下步骤：调整扩展色域数字图像的颜色值以适应有限色域以形成 有限的色域数字图像; 表示存储颜色空间中的有限色域数字图像; 确定已限制的色域数字图像中的高度量化区域已经被限幅的限幅色域数字图像; 确定表示扩展色域数字图像与限幅色域数字图像之间的差的残差图像; 以及将所述残留图像与所述存储颜色空间中的所述有限色域数字图像相关联，使得所述相关联的残留图像和所述存储颜色空间中的所述有限色域数字图像适于用于形成重构的扩展色域数字图像。
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公开(公告)号：US06243133B1
公开(公告)日：2001-06-05
申请号：US08813257
申请日：1997-03-07
IPC分类号： H04N973
CPC分类号： H04N9/735 , H04N1/6052 , H04N1/6077
摘要： A scene balance correction method for a digital imaging device, including the steps of determining a low-resolution image from an input image in an input color space; applying a color transformation to convert the low-resolution image to a standard color space to form a standard color space low-resolution image; analyzing the standard color space low-resolution image to determine a set of standard color space scene balance correction factors; determining a set of corresponding input color space scene balance correction factors from the standard color space scene balance correction factors using the color transformation; and applying the corresponding input color space scene balance correction factors to the input image to form a corrected input image.
摘要翻译： 一种用于数字成像装置的场景平衡校正方法，包括以下步骤：从输入颜色空间中的输入图像确定低分辨率图像; 应用颜色变换将低分辨率图像转换成标准色彩空间以形成标准色彩空间低分辨率图像; 分析标准色彩空间低分辨率图像，确定一套标准色彩空间场景平衡校正因子; 使用颜色变换从标准色彩空间场景平衡校正因子确定一组相应的输入颜色空间场景平衡校正因子; 以及将相应的输入颜色空间场景平衡校正因子应用于输入图像以形成校正的输入图像。
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65.发明授权Selecting a calibration function for a digital printer which minimizes an error criterion 失效选择最小化错误标准的数字打印机的校准功能
公开(公告)号：US5956469A
公开(公告)日：1999-09-21
申请号：US896713
申请日：1997-07-18
CPC分类号： H04N1/6033
摘要： A method and apparatus are disclosed for calibrating a digital printer to provide a substantially aim printer response. A test target is processed through a set of potential calibration functions to form a set of processed test targets and the set of processed test targets is printed using the digital printer. Thereafter, the set of printed test targets is measured to determine the printer response. An error criterion is determined for each measured test target by comparing the measured printer response for each of the set of potential calibration functions to the aim printer response. The calibration function which has the smallest value of the error criterion is then selected.
摘要翻译： 公开了一种用于校准数字打印机以提供基本上瞄准打印机响应的方法和装置。 通过一组潜在的校准功能处理测试目标，以形成一组经过处理的测试目标，并使用数字打印机打印一组已处理的测试目标。 此后，测量一组打印的测试目标以确定打印机响应。 通过将每组潜在校准功能的测量打印机响应与目标打印机响应进行比较，确定每个测试目标的误差标准。 然后选择具有最小误差准则值的校准函数。
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公开(公告)号：US5903681A
公开(公告)日：1999-05-11
申请号：US685740
申请日：1996-07-24
CPC分类号： G06T5/20
摘要： An arrangment is disclosed for reducing edge artifacts produced when printing a digital image on a digital printer, which printer is capable of producing multiple output levels, said digital image being represented as a rectangular array of pixels. In this arrangement, the following steps are accomplished by: computing difference signals between a center pixel value and pixel values of a set of one or more neighboring pixels; determining a pixel correction value responsive to the computed difference signals; and computing a new center pixel value by modifying the center pixel value using the pixel correction value.
摘要翻译： 公开了一种用于减少在数字打印机上打印数字图像时产生的边缘伪像的布置，该打印机能够产生多个输出电平，所述数字图像被表示为矩形像素阵列。 在这种布置中，通过以下步骤来实现以下步骤：计算中心像素值与一组或多个相邻像素的像素值之间的差分信号; 响应于所计算的差信号确定像素校正值; 以及通过使用像素校正值修改中心像素值来计算新的中心像素值。
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67.发明授权Method and apparatus employing mean preserving spatial modulation for transforming a digital color image signal 失效使用平均保留空间调制来变换数字彩色图像信号的方法和装置
公开(公告)号：US5377041A
公开(公告)日：1994-12-27
申请号：US143674
申请日：1993-10-27
申请人： Kevin E. Spaulding , Kevin C. Scott
发明人： Kevin E. Spaulding , Kevin C. Scott
CPC分类号： H04N1/648 , H04N1/6019
摘要： This invention minimizes the visibility of quantization artifacts associated with multi-dimensional color-calibration look-up tables of a limited size. Such artifacts occur when it is not practical to use interpolation methods to approximate color values which are intermediate to the color values stored in the look-up table. In such cases the input color signals are simply quantized for the purpose of addressing the look-up table. This invention works by applying local mean preserving spatial modulation to the input color image values prior to the quantization step. As with multi-level halftoning techniques, the result is that the appearance of intermediate color values is created because the observer will spatially average the output color values.
摘要翻译： 本发明使与有限尺寸的多维颜色校准查找表相关联的量化伪像的可见性最小化。 当使用插值方法来近似在存储在查找表中的颜色值的中间的颜色值是不实际的时候，会发生这种伪像。 在这种情况下，为了寻址查找表的目的，输入颜色信号被简单量化。 本发明通过在量化步骤之前对输入的彩色图像值应用局部平均维持空间调制来工作。 与多级半色调技术一样，结果是创建中间色彩值的外观，因为观察者将在空间上平均输出颜色值。
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68.发明授权Method for generating halftone image data with randomly selected threshold array 失效用于通过随机选择的阈值阵列生成黑客图像数据的方法
公开(公告)号：US5150428A
公开(公告)日：1992-09-22
申请号：US677933
申请日：1991-04-01
IPC分类号： H04N1/405
CPC分类号： H04N1/4055
摘要： In the present invention each input pixel value is compared against a randomly selected threshold value to provide an output pixel having a value indicative of which of the values is greater. The threshold value is selected from one of a plurality of threshold matrices, each having a predetermined number of threshold values that are arranged in a pattern with the values for a base matrix being increased by an increment for each succeeding one of the plurality of threshold matrices. The selection of the one threshold matrix is made by means of a pseudo-random number generator.
摘要翻译： 在本发明中，将每个输入像素值与随机选择的阈值进行比较，以提供具有指示哪个值更大的值的输出像素。 阈值从多个阈值矩阵中的一个中选择，每个阈值矩阵具有预定数量的阈值，其以图形排列，其中基本矩阵的值增加了多个阈值矩阵中的每个后续的一个阈值的增量 。 通过伪随机数发生器来进行一个阈值矩阵的选择。
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公开(公告)号：US20110228074A1
公开(公告)日：2011-09-22
申请号：US12728486
申请日：2010-03-22
IPC分类号： H04N7/18
CPC分类号： G03B17/08 , G03B15/05 , G03B2215/05 , H04N5/232 , H04N5/23245 , H04N5/772 , H04N9/045 , H04N9/8205 , H04N21/4147 , H04N21/42202 , H04N21/4223 , H04N21/4334 , H04N21/4882 , H04N21/84
摘要： A digital image capture device for use in capturing underwater digital images, comprising a watertight housing; an image sensor for capturing a digital image; an optical system for imaging a scene onto the image sensor; a means for sensing a pressure outside the watertight housing; and a processor. The processor performs the steps of determining a sensed pressure; capturing a digital image of a scene using the image sensor; using the sensed pressure to determine an indication of whether the digital image capture device is being operated underwater and selecting an underwater photography mode or a normal photography mode accordingly; processing the captured digital image according to the selected photography mode; and storing the processed digital image in a processor accessible memory.
摘要翻译： 一种用于捕获水下数字图像的数字图像捕获装置，包括防水壳体; 用于捕获数字图像的图像传感器; 用于将场景成像到图像传感器上的光学系统; 用于感测水密外壳外的压力的装置; 和处理器。 处理器执行确定感测压力的步骤; 使用图像传感器捕获场景的数字图像; 使用感测到的压力来确定数字图像捕获装置是否正在水下操作的指示，并相应地选择水下摄影模式或正常拍摄模式; 根据选择的拍摄模式处理拍摄的数字图像; 以及将经处理的数字图像存储在处理器可访问存储器中。
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公开(公告)号：US20100202710A1
公开(公告)日：2010-08-12
申请号：US12764406
申请日：2010-04-21
IPC分类号： G06K9/36
CPC分类号： G06T7/0004 , G06T2207/20021 , G06T2207/20052 , G06T2207/30144 , G06T2207/30168 , H04N19/60 , H04N19/85
摘要： A method for determining a sharpness predictor for an input digital image includes determining one or more image metrics by analyzing the input digital image; and determining the sharpness predictor from the one or more image metrics.
摘要翻译： 用于确定输入数字图像的锐度预测器的方法包括通过分析输入数字图像来确定一个或多个图像度量; 以及从所述一个或多个图像度量确定所述锐度预测器。
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