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11.发明授权Processing by separate stages monochrome digital images to provide halftone color images 失效单独处理单色数字图像以提供半色调彩色图像
公开(公告)号：US5715073A
公开(公告)日：1998-02-03
申请号：US383286
申请日：1995-02-03
申请人： Rodney L. Miller
发明人： Rodney L. Miller
摘要： A halftone processing method is disclosed in which, after receiving three or more monochrome digital images which collectively represent a color image having three colors, processing takes place. Processing is by a separate stage for each of the monochrome digital images to provide halftone output images, wherein at least one of the stages uses a different processor algorithm from the other halftone processing stages so as to increase processing speed.
摘要翻译： 公开了一种半色调处理方法，其中在接收三个或更多个共同表示具有三种颜色的彩色图像的单色数字图像之后，进行处理。 处理是通过用于每个单色数字图像的单独阶段来提供半色调输出图像，其中至少一个级使用与其他半色调处理级不同的处理器算法，以便提高处理速度。
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公开(公告)号：US4920501A
公开(公告)日：1990-04-24
申请号：US259940
申请日：1988-10-19
IPC分类号： H04N1/405
CPC分类号： H04N1/4051
摘要： A digital halftone image is produced by providing a binary bit image pattern having a minimum visual noise for each density level in an image. The patterns are produced by employing a stochastic combinatorial minimization technique and a human visual system modulation transfer function (MTF) weighting function to generate a halftone pattern for each density level of the multi-level digital image signal. A halftone image is produced by modularly addressing these patterns with each pixel value in the image.
摘要翻译： 通过为图像中的每个密度级提供具有最小视觉噪声的二进制位图像图案来产生数字半色调图像。 通过采用随机组合最小化技术和人类视觉系统调制传递函数（MTF）加权函数来产生图案，以产生多级数字图像信号的每个密度级的半色调图案。 通过以图像中的每个像素值模块化地寻址这些图案来产生半色调图像。
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公开(公告)号：US08305485B2
公开(公告)日：2012-11-06
申请号：US12770894
申请日：2010-04-30
申请人： Paul J. Kane , Rodney L. Miller , Sen Wang
发明人： Paul J. Kane , Rodney L. Miller , Sen Wang
摘要： Method of using an image capture device to identify range information for objects in a scene includes providing an image capture device at least one image sensor, a coded aperture, a first optical path including the coded aperture and a second optical path not including the coded aperture; storing in a memory a set of blur parameters derived from range calibration data for the coded aperture; capturing a first and second image of the scene, corresponding to the first and second optical paths, the second image having equal or higher resolution than the first; providing a set of deblurred images using the first capture image and each of the blur parameters from the stored set; using the set of deblurred images to determine the range information for the objects captured by the first optical path; and using the range information to control the image capture or processing of second image.
摘要翻译： 使用图像捕获装置识别场景中的物体的范围信息的方法包括提供图像捕获装置至少一个图像传感器，编码孔径，包括编码孔径的第一光路和不包括编码孔径的第二光路 ; 在存储器中存储由编码孔径的范围校准数据导出的一组模糊参数; 捕获对应于第一和第二光路的场景的第一和第二图像，第二图像具有与第一图像相同或更高的分辨率; 使用所存储的集合中的第一捕获图像和每个模糊参数提供一组去模糊图像; 使用一组去模糊图像来确定由第一光路捕获的物体的范围信息; 并使用范围信息来控制第二图像的图像捕获或处理。
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公开(公告)号：US20110267508A1
公开(公告)日：2011-11-03
申请号：US12770894
申请日：2010-04-30
申请人： PAUL J. KANE , Rodney L. Miller , Sen Wang
发明人： PAUL J. KANE , Rodney L. Miller , Sen Wang
IPC分类号： H04N5/217
摘要： Method of using an image capture device to identify range information for objects in a scene includes providing an image capture device at least one image sensor, a coded aperture, a first optical path including the coded aperture and a second optical path not including the coded aperture; storing in a memory a set of blur parameters derived from range calibration data for the coded aperture; capturing a first and second image of the scene, corresponding to the first and second optical paths, the second image having equal or higher resolution than the first; providing a set of deblurred images using the first capture image and each of the blur parameters from the stored set; using the set of deblurred images to determine the range information for the objects captured by the first optical path; and using the range information to control the image capture or processing of second image.
摘要翻译： 使用图像捕获装置识别场景中的物体的范围信息的方法包括提供图像捕获装置至少一个图像传感器，编码孔径，包括编码孔径的第一光路和不包括编码孔径的第二光路 ; 在存储器中存储由编码孔径的范围校准数据导出的一组模糊参数; 捕获对应于第一和第二光路的场景的第一和第二图像，第二图像具有与第一图像相同或更高的分辨率; 使用所存储的集合中的第一捕获图像和每个模糊参数提供一组去模糊图像; 使用一组去模糊图像来确定由第一光路捕获的物体的范围信息; 并使用范围信息来控制第二图像的图像捕获或处理。
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公开(公告)号：US20110102642A1
公开(公告)日：2011-05-05
申请号：US12612135
申请日：2009-11-04
申请人： Sen Wang , Tingbo Hou , Rodney L. Miller
发明人： Sen Wang , Tingbo Hou , Rodney L. Miller
CPC分类号： H04N5/23248 , G06T5/003 , G06T5/50 , G06T2207/20201 , H04N5/23277
摘要： A method for determining a deblurred image comprising: receiving a blurred image of a scene; receiving a blur kernel; initializing a candidate deblurred image; determining a plurality of differential images representing differences between neighboring pixels in the candidate deblurred image; determining a combined differential image by combining the differential images; repeatedly updating the candidate deblurred image responsive to the blurred image, the blur kernel, the candidate deblurred image and the combined differential image until a convergence criterion is satisfied; and storing the final candidate deblurred image in a processor-accessible memory system.
摘要翻译： 一种用于确定去模糊图像的方法，包括：接收场景的模糊图像; 接收模糊内核; 初始化候选的未模糊图像; 确定表示候选去模糊图像中的相邻像素之间的差的多个差分图像; 通过组合差分图像来确定组合差分图像; 响应于模糊图像，模糊核心，候选去模糊图像和组合差分图像反复更新候选去模糊图像，直到满足收敛标准; 以及将最终的候选去模糊图像存储在处理器可访问的存储器系统中。
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公开(公告)号：US20110090352A1
公开(公告)日：2011-04-21
申请号：US12580569
申请日：2009-10-16
申请人： Sen Wang , Tingbo Hou , Rodney L. Miller
发明人： Sen Wang , Tingbo Hou , Rodney L. Miller
CPC分类号： H04N5/23248 , G06T5/003 , G06T5/50 , G06T2207/10016 , G06T2207/10144 , G06T2207/20076 , G06T2207/20201 , H04N5/23267 , H04N5/35554
摘要： A method for determining a deblurred image, the method implemented at least in part by a data processing system and comprising: receiving a sharp image of a scene captured with a short exposure time; receiving a blurred image of the scene captured with a longer exposure time than the sharp image, wherein the blurred image has a higher level of motion blur and a lower level of image noise than the sharp image; determining a blur kernel responsive to the sharp image and the blurred image; determining one or more reference differential images responsive to the sharp image; determining a deblurred image responsive to the blurred image, the blur kernel and the one or more reference differential images; and storing the deblurred image in a processor-accessible memory system.
摘要翻译： 一种用于确定去模糊图像的方法，所述方法至少部分地由数据处理系统实现，并且包括：接收以短曝光时间捕获的场景的清晰图像; 接收以比所述锐利图像更长的曝光时间拍摄的场景的模糊图像，其中所述模糊图像具有比所述锐利图像更高水平的运动模糊和较低水平的图像噪声; 确定响应于清晰图像和模糊图像的模糊内核; 确定响应于所述清晰图像的一个或多个参考差分图像; 确定响应于所述模糊图像，所述模糊核和所述一个或多个参考差分图像的去模糊图像; 以及将所述去模糊图像存储在处理器可访问存储器系统中。
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17.发明授权Partially correlated minimum visibility halftone patterns for digital printers 失效部分相关的最小可见度数字打印机的半色调图案
公开(公告)号：US5946452A
公开(公告)日：1999-08-31
申请号：US799954
申请日：1997-02-14
CPC分类号： H04N1/4051
摘要： A method for halftoning a digital image having an x,y array of pixels each having an associated input pixel value, includes the steps of providing a memory containing a dither bitmap for each input pixel value of the digital image where the dither bitmaps are partially correlated; selecting a dither bitmap corresponding to the input pixel value for a pixel in said digital image; modularly addressing the selected dither bitmap with the location of said pixel to obtain an output halftone image value; and repeating steps for each pixel in the digital image.
摘要翻译： 一种用于半色调具有每个具有相关联的输入像素值的x，y像素阵列的数字图像的方法包括以下步骤：为抖动位图部分相关的数字图像的每个输入像素值提供包含抖动位图的存储器 ; 选择与所述数字图像中的像素的输入像素值相对应的抖动位图; 以所述像素的位置模块化地寻址所选择的抖动位图以获得输出半色调图像值; 并对数字图像中的每个像素重复步骤。
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公开(公告)号：US5757517A
公开(公告)日：1998-05-26
申请号：US409554
申请日：1995-03-23
CPC分类号： H04N1/4052 , H04N1/4053
摘要： An error diffusion method suitable for producing an output image from an input image having a set of digitized continuous-tone pixels is disclosed. The method includes the steps of computing an image activity signal; computing a set of activity weights from the image activity signal; computing a filtered input value for a digitized continuous-tone input pixel responsive to the activity weights and computing a filtered output value responsive to the activity weights for each of the possible output levels. The method further includes selecting the output level in response to the filtered input value and the filtered output value for each of the possible output levels according to an error criterion; determining an error signal between the filtered input value and the filtered output value for the selected output level; and weighting the error signal and adjusting the filtered input values for nearby pixels which have not yet been processed.
摘要翻译： 公开了一种适用于从具有一组数字化连续色调像素的输入图像产生输出图像的误差扩散方法。 该方法包括计算图像活动信号的步骤; 从图像活动信号计算一组活动权重; 响应于活动权重计算数字化连续色调输入像素的滤波输入值，并响应于每个可能输出电平的活动权重计算滤波后的输出值。 该方法还包括根据误差准则，响应于滤波后的输入值和每个可能输出电平的滤波输出值来选择输出电平; 确定经滤波的输入值和所选输出电平的滤波输出值之间的误差信号; 并对误差信号进行加权，并调整尚未处理的附近像素的滤波输入值。
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19.发明授权Processes for minimizing the quantization error in multi-level halftone transfer functions 失效用于最小化多级半色调传递函数中的量化误差的过程
公开(公告)号：US5633729A
公开(公告)日：1997-05-27
申请号：US362324
申请日：1994-12-22
申请人： Craig M. Smith , Rodney L. Miller
发明人： Craig M. Smith , Rodney L. Miller
CPC分类号： H04N1/40087
摘要： Improved processes for quantizing a set of mean-preserving Tone Transfer Functions (TTFs) for a multi-level halftoning system which minimize or at least significantly reduce the overall quantization error in the system as a function of a prespecified system halftone cell size, P, and the number of micro output levels, L.sub.y, supported by the multi-level halftoning system. The processes call for dividing the range of possible input contone representative intensity values into T subintervals, where T=PL.sub.y ; determining the values of the centers of the T-subintervals; and quantizing each of the normalized continuous mean preserving TTFs as a function of the values of the centers of the T-subintervals. According to a preferred embodiment, the quantizing is performed such that the quantized TTFs approximate the normalized continuous mean preserving TTFs and ideally satisfy the criteria that the maximum quantization error between any quantized and unquantized TTF is minimized. Further aspects of the invention are directed to methods for determining threshold levels for assignment to threshold matrices, and methods for specifying look-up tables, either of which (the matrices and look-up tables) may be used for converting input contone representative intensity values into a predetermined number of available micro output levels for a multilevel halftone system having a predetermined halftone cell size.
摘要翻译： 改进用于量化一组多级半色调系统的平均保留音调传递函数（TTF）的过程，其最小化或至少显着地降低系统中的总体量化误差，作为预定系统半色调单元大小P的函数， 和微量输出级数Ly，由多级半色调系统支持。 这些过程需要将可能的输入连续代数强度值的范围分成T个子区间，其中T = PLy; 确定T型子间隔中心的值; 并且将每个标准化的连续平均维持TTF量化为T个子区间的中心值的函数。 根据优选实施例，执行量化，使得量化的TTF接近标准化的连续平均维持TTF，并且理想地满足任何量化和非量化TTF之间的最大量化误差最小化的标准。 本发明的另外方面涉及用于确定用于分配给阈值矩阵的阈值水平的方法，以及用于指定查找表的方法，其中（矩阵和查找表）可以用于将输入连字符表示强度值 成为具有预定半色调单元尺寸的多级半色调系统的预定数量的可用微输出电平。
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20.发明授权Process for selecting output levels for multi-level halftone in the presence of an unstable display device 失效在存在不稳定显示设备的情况下选择多级半色调的输出电平的过程
公开(公告)号：US5452403A
公开(公告)日：1995-09-19
申请号：US995841
申请日：1992-12-23
申请人： Rodney L. Miller
发明人： Rodney L. Miller
CPC分类号： G06T5/009
摘要： A process for selecting output levels for multi-level halftones optimizes the stability of an output device, even though the system contains unstable components. First, a function which quantifies undesirable mean level image artifacts for the unstable display device is defined, to stabilize the tone transfer curve of the unstable device. Then density levels are chosen to minimize the function and optimize stability of the output device.
摘要翻译： 选择多级半色调输出级别的过程可优化输出设备的稳定性，即使系统包含不稳定的组件。 首先，定义了用于不稳定显示装置量化不期望的平均水平图像伪影的功能，以稳定不稳定装置的色调传递曲线。 然后选择密度水平以最小化功能并优化输出设备的稳定性。
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