公开(公告)号：US06975778B1

公开(公告)日：2005-12-13

申请号：US09559198

申请日：2000-04-27

申请人： Robert P. Loce ,  Beilei Xu

发明人： Robert P. Loce ,  Beilei Xu

IPC分类号： G06K9/40

CPC分类号： G06T5/003 ,  G06T2207/10008 ,  G06T2207/30176 ,  H04N1/409

摘要： An imaging apparatus includes an image acquisition section which converts a physical image to a digital image representation using non-ideal optics such as an array lens. This image acquisition results in a digital image representation containing errors or artifacts. A memory in data communication with a processor stores a plurality of compensation parameters selected for use in correcting errors induced by the lens array. The compensation parameters are determined by performing a lens characterization which includes measuring lens performance at a plurality of locations along the lens. After the processor adjusts the image representation, the post-compensated digital image representation may be further processed, stored, transferred, and the like. According to another embodiment of the invention, a non-ideal array lens induces errors in an image representation during a printing or output operation. Similarly, an image processor applies pre-compensation parameters to the desired or ideal image representation in electronic form to compensate for errors which are known to be induced by the lens during the output operation. Accordingly, when the pre-compensated image representation is output using the non-ideal lens, the physical image output appears to have been printed with an ideal lens.

摘要翻译： 一种成像装置包括图像获取部分，其使用诸如阵列透镜的非理想光学器件将物理图像转换为数字图像表示。 该图像采集导致包含错误或伪像的数字图像表示。 与处理器进行数据通信的存储器存储选择用于校正由透镜阵列引起的误差的多个补偿参数。 通过执行透镜表征来确定补偿参数，该透镜表征包括在透镜的多个位置处测量透镜性能。 在处理器调整图像表示之后，可以进一步处理，存储，传送后补偿数字图像表示等。 根据本发明的另一实施例，非理想阵列透镜在打印或输出操作期间引起图像表示中的错误。 类似地，图像处理器以电子形式将预补偿参数应用于期望的或理想的图像表示，以补偿在输出操作期间已知由透镜感应的误差。 因此，当使用非理想透镜输出预补偿图像表示时，物理图像输出似乎已经用理想透镜打印。

公开(公告)号：US06944341B2

公开(公告)日：2005-09-13

申请号：US09768161

申请日：2001-01-24

申请人： Robert P. Loce ,  Clara Cuciurean-Zapan

发明人： Robert P. Loce ,  Clara Cuciurean-Zapan

IPC分类号： B41J2/485 ,  B41J5/30 ,  G06T1/00 ,  G06T7/00 ,  H04N1/409 ,  G06K9/00 ,  G06K9/62

CPC分类号： H04N1/409

摘要： An anti-aliased, or gray-edged, image is characterized by comparing the image to a number of loose-templates having a plurality of elements and at least one element having a range greater than zero. As families of loose-templates are compared to the anti-aliased input image, one or more sets of patterns, or features, are recognized and extracted to produce various screens of features that generally describe the anti-aliased input image. An arbitration technique is then performed on the sets of features to produce feature vectors which, in turn, can be used to control line-widths within the anti-aliased input image.

摘要翻译： 抗锯齿或灰边图像的特征在于将图像与具有多个元素的多个松散模板和具有大于零的范围的至少一个元素进行比较。 当将松散模板的族与抗锯齿输入图像进行比较时，识别和提取一组或多组模式或特征以产生通常描述抗混叠输入图像的各种特征屏幕。 然后对特征集执行仲裁技术以产生特征向量，其又可以用于控制抗混叠输入图像内的线宽。

公开(公告)号：US06760056B2

公开(公告)日：2004-07-06

申请号：US09738573

申请日：2000-12-15

申请人： R. Victor Klassen ,  Stephen C. Morgana ,  Robert P. Loce ,  Michael Branciforte ,  Daniel R. Maurer ,  Michael J. Martin ,  Robert M. Lofthus

发明人： R. Victor Klassen ,  Stephen C. Morgana ,  Robert P. Loce ,  Michael Branciforte ,  Daniel R. Maurer ,  Michael J. Martin ,  Robert M. Lofthus

IPC分类号： B41J247

CPC分类号： B41J2/471

摘要： A method for rendering a raster output level determines an image position of a pixel of interest (POI) within an image. An intended raster output level, which corresponds to the POI, is received into a processing device. A final raster input level is determined as a function of the image position and the intended raster output level. The final input level and the image position are transmitted to an output device. An actual raster output level is rendered, via the output device, at a position on an output medium corresponding to the image position. The actual raster output level substantially matches the intended raster output level.

摘要翻译： 用于渲染光栅输出电平的方法确定图像内的感兴趣像素（POI）的图像位置。 对应于POI的预期光栅输出电平被接收到处理设备中。 根据图像位置和预期的光栅输出电平确定最终光栅输入电平。 最终输入电平和图像位置被发送到输出设备。 通过输出设备，在对应于图像位置的输出介质上的位置处渲染实际的光栅输出电平。 实际光栅输出电平基本上与预期的光栅输出电平相匹配。

公开(公告)号：US06757431B2

公开(公告)日：2004-06-29

申请号：US09740607

申请日：2000-12-19

申请人： Robert P. Loce ,  John C. Handley ,  Clara Cuciurean-Zapan

发明人： Robert P. Loce ,  John C. Handley ,  Clara Cuciurean-Zapan

IPC分类号： G06K962

CPC分类号： G06T3/4007

摘要： A method for resolution conversion for re-sampling anti-aliased images is disclosed which decreases bandwidth costs associated with anti-aliased line art and other costs associated with interpolating these images to a desired resolution. The present method first involving the receipt of an image which is comprised of bitmap data including at least a plurality of gray-scale pixel tiles that define the image. Then receiving the image data at a first resolution and extracting pixel tile information of the received image at a second resolution. The method has the step of next using loose gray scale template matching on each of the pixel tile information with at least one of a plurality of templates so as to generate pixel-wise looseness interval values there between. Then, outputting a portion of the enhanced pixel tile information wherein the enhanced pixel tile information is formed by a matching of a template with pixel-wise looseness values. Preferably, the input and output resolutions are at different integer values and the first and second resolutions have a non-integer ratio. The input image can also preferably be comprised of gray halftones and the output enhanced pixel tile can be formed of binary pixel data.

摘要翻译： 公开了一种用于重采样抗锯齿图像的分辨率转换方法，其减少了与抗锯齿线条艺术相关联的带宽成本以及将这些图像内插到期望分辨率相关的其它成本。 本方法首先包括接收包括定位图像的至少多个灰度级像素块的位图数据的图像。 然后以第一分辨率接收图像数据，并以第二分辨率提取接收到的图像的像素平铺信息。 该方法具有以下步骤：使用与多个模板中的至少一个相对应的每个像素平铺信息上的松散灰度级模板匹配，以便在其间产生像素级的松散间隔值。 然后，输出增强像素平铺信息的一部分，其中通过模板与像素方向的松动度值的匹配来形成增强像素平铺信息。 优选地，输入和输出分辨率是不同的整数值，并且第一和第二分辨率具有非整数比。 输入图像还可以优选地由灰色半色调组成，并且输出增强像素图块可以由二进制像素数据形成。

公开(公告)号：US06608643B2

公开(公告)日：2003-08-19

申请号：US10046234

申请日：2002-01-16

申请人： Robert M. Lofthus ,  Patrick Y. Maeda ,  Daniel W. Costanza ,  Kristine A. German ,  Fred F. Hubble, III ,  Robert P. Loce

发明人： Robert M. Lofthus ,  Patrick Y. Maeda ,  Daniel W. Costanza ,  Kristine A. German ,  Fred F. Hubble, III ,  Robert P. Loce

IPC分类号： B41J247

CPC分类号： G02B26/123 ,  G02B26/127

摘要： An apparatus for correcting beam-to-beam spacing error on an image plane of a photoreceptor includes a controller which generates beam-to-beam spacing error corrections signals, a plurality of optical elements, each of which is adjustable and responsive to beam-to-beam spacing error correction signal and a gray level measurement device. The controller performs the beam-to-beam spacing error correction analysis, determining whether or not a correction is necessary, and if so, which optical element to adjust and the magnitude of adjustment. Enhanced toner area coverage sensors are used to detect the gray level of a toned area of raster scan line patterns at various locations across the photoreceptor image plane. By repeatedly evaluating the beam-to-beam spacing error during operation, the apparatus of the invention is able to correct beam-to-beam spacing errors that may develop during operation and does not permit residual errors to persist even after an initial correction has been implemented.

摘要翻译： 用于校正感光体的图像平面上的光束到光束间隔误差的装置包括产生光束到光束间隔误差校正信号的控制器，多个光学元件，每个光学元件可调节并且响应于光束到光束 光束间隔误差校正信号和灰度级测量装置。 控制器执行波束对波束间隔误差校正分析，确定是否需要校正，如果是，则调整哪个光学元件和调整幅度。 增强的调色剂区域覆盖传感器用于检测在感光体图像平面上的各个位置处的光栅扫描线图案的色调区域的灰度级。 通过在操作期间重复评估波束对波束间隔误差，本发明的装置能够校正在操作期间可能产生的波束间距误差，并且即使在初始校正已经被保持之后也不允许残留误差保持 实施。

公开(公告)号：US06356654B1

公开(公告)日：2002-03-12

申请号：US09219705

申请日：1998-12-23

申请人： Robert P. Loce ,  Michael S. Cianciosi ,  Ying-Wei Lin

发明人： Robert P. Loce ,  Michael S. Cianciosi ,  Ying-Wei Lin

IPC分类号： G06K900

CPC分类号： H04N1/58

摘要： Systems and methods for template matching of multicolored images provide an image conversion process that respectively views two, three or four input color planes through an input observation window. Single plane vectors are obtained that represent the color planes. The obtained single plane vectors are combined into a multi-plane vector that may be used in a look-up table for descreening or resolution enhancement, for example. Various interactions between color planes may be taken into account to provide optimum color space conversion. Additional information obtained by using the multi-plane vector allow performance of image processes with optimized accurate color values.

摘要翻译： 用于多色图像的模板匹配的系统和方法提供了通过输入观察窗口分别观看两个，三个或四个输入彩色平面的图像转换处理。 获得表示颜色平面的单平面向量。 获得的单平面矢量被组合成例如可以用于查看表中用于去网或分辨率增强的多平面矢量。 可以考虑色平面之间的各种相互作用，以提供最佳的颜色空间转换。 通过使用多平面矢量获得的附加信息允许以优化的精确色彩值执行图像处理。

公开(公告)号：US06343159B1

公开(公告)日：2002-01-29

申请号：US09219703

申请日：1998-12-23

申请人： Clara Cuciurean-Zapan ,  Ramesh Nagarajan ,  Robert P. Loce ,  Jeffrey D. Kingsley

发明人： Clara Cuciurean-Zapan ,  Ramesh Nagarajan ,  Robert P. Loce ,  Jeffrey D. Kingsley

IPC分类号： G06K936

CPC分类号： H04N1/40075 ,  G06T5/002 ,  G06T5/003 ,  G06T5/20 ,  G06T2207/20192

摘要： The methods and apparatus of this invention model and reconstruct binarized images. A grayscale image is modeled using a template matching approach. Each binarized grayscale image value is characterized by a unique set of templates which are rotations of each other. The set of templates allows construction of a look-up table between patterns and grayscale values. The look-up table is provided with a limited number of entries. As a result, the number of entries in the look-up table is reduced. The look-up table thus obtained is used for reconstructing the original grayscale image from the binarized image. The generated image quality is good in comparison with conventional methods. The process may be applied to various halftoning processes including error-diffusion processes.

摘要翻译： 本发明的方法和装置模拟和重建二值化图像。 使用模板匹配方法对灰度图像进行建模。 每个二进制灰度图像值的特征在于一组唯一的模板，它们是彼此的旋转。 该模板集允许构建模式和灰度值之间的查找表。 查找表中提供了有限数量的条目。 结果，查找表中的条目数量减少了。 如此获得的查找表用于从二值化图像重建原始灰度图像。 与常规方法相比，生成的图像质量良好。 该方法可以应用于各种半色调处理，包括误差扩散过程。

公开(公告)号：US6167166A

公开(公告)日：2000-12-26

申请号：US46414

申请日：1998-03-23

申请人： Robert P. Loce ,  Ronald E. Jodoin ,  Peter A. Crean ,  Wei Zhu

发明人： Robert P. Loce ,  Ronald E. Jodoin ,  Peter A. Crean ,  Wei Zhu

IPC分类号： H04N1/409 ,  G06K15/02 ,  G06T5/20 ,  G06T11/00 ,  G06T11/20 ,  H04N1/405 ,  G03F3/08

CPC分类号： H04N1/4056 ,  G06K15/02 ,  G06K2215/006 ,  G06K2215/0071 ,  G06T11/001

摘要： The present invention is a method for antialiased rendering (AAR) of an image. First, tagging methods for identifying antialiased pixels were described, the methods being employed separately or in concert with one another. After identifying AAR pixels, a fill order is determined and applied using a fill order algorithm that preferably employs a pixel window that is a subset of the larger window employed for pixel identification.

摘要翻译： 本发明是图像的抗锯齿渲染（AAR）的方法。 首先，描述了用于识别抗锯齿像素的标记方法，该方法是单独使用的或彼此协调使用的。 在识别AAR像素之后，使用优选采用作为用于像素识别的较大窗口的子集的像素窗口的填充顺序算法来确定和应用填充顺序。

公开(公告)号：US5862305A

公开(公告)日：1999-01-19

申请号：US721065

申请日：1996-09-26

申请人： Girmay K. Girmay ,  Robert P. Loce

发明人： Girmay K. Girmay ,  Robert P. Loce

IPC分类号： G06T3/40 ,  H04N1/40 ,  G06K1/00 ,  G06K9/36

CPC分类号： H04N1/40068 ,  G06T3/40

摘要： The present invention is a method and apparatus for logic based resolution conversion and enhancement of digital images. The invention employs a selectively controllable architecture wherein a plurality of input resolutions can be converted to a common output resolution. The system has particular use in highlight color systems, wherein the highlight color data may be processed separately for each color plane, using the present invention, and then recombined to produce enhanced highlight color output. Moreover, the hardware preferably employs an interlocked area mapping technique to produce the resolution converted bit planes of digital image data.

摘要翻译： 本发明是用于基于逻辑的分辨率转换和数字图像增强的方法和装置。 本发明采用选择性可控的架构，其中多个输入分辨率可被转换为公共输出分辨率。 该系统在高亮度颜色系统中具有特别的用途，其中可以使用本发明为每个彩色平面分别处理高亮度颜色数据，然后重新组合以产生增强的高亮颜色输出。 此外，硬件优选采用互锁区域映射技术来产生数字图像数据的分辨率转换位平面。

公开(公告)号：US5696845A

公开(公告)日：1997-12-09

申请号：US169485

申请日：1993-12-17

申请人： Robert P. Loce ,  Michael S. Cianciosi

发明人： Robert P. Loce ,  Michael S. Cianciosi

IPC分类号： H04N1/40 ,  G06K15/02 ,  G06T3/40 ,  G06T5/20 ,  G06K9/40 ,  G06F15/00

CPC分类号： G06T3/40 ,  G06K15/02 ,  G06K2215/0071

摘要： The present invention is a method and apparatus for improving the appearance of printed documents, and more specifically, to the use of a template matching process to enhance the fast-scan resolution of digital images while maintaining raster resolution for printing. The present invention uses multiple-bit per pixel, statistically generated templates, implemented using look-up tables, to improve document appearance by converting from a single-bit per pixel to N-bits per pixel, while preserving raster resolution of the printed output. The resulting N-bit per pixel image signals may be utilized to control a scanning beam where the beam varies in intensity and duration according to the pulses used to control it.

摘要翻译： 本发明是一种用于改善打印文档的外观的方法和装置，更具体地说，涉及使用模板匹配处理来增强数字图像的快速扫描分辨率，同时保持用于打印的光栅分辨率。 本发明使用通过使用查找表实现的统计生成的模板，通过从单个位每像素转换为每像素N位，同时保持打印输出的光栅分辨率来使用多位每像素，统计生成的模板。 所得到的N位每像素图像信号可以用于控制扫描光束，其中光束根据用于控制它的脉冲的强度和持续时间而变化。