公开(公告)号：US06449396B1

公开(公告)日：2002-09-10

申请号：US09348871

申请日：1999-07-07

申请人： Robert P. Loce ,  Yeqing Zhang ,  Leon C. Williams ,  Michael Branciforte

发明人： Robert P. Loce ,  Yeqing Zhang ,  Leon C. Williams ,  Michael Branciforte

IPC分类号： G06K936

CPC分类号： H04N1/4056 ,  H04N1/40075

摘要： A method of processing a high addressability binary image comprises converting the high addressability binary image to gray-scale image data; manipulating the gray-scale image data; and rendering the manipulated gray-scale image to a high addressability format using a compact rendering process.

摘要翻译： 一种处理高可寻址性二值图像的方法包括将高可寻址性二进制图像转换为灰度图像数据; 操纵灰度图像数据; 并使用紧凑的渲染过程将操纵的灰度图像呈现为高寻址能力格式。

公开(公告)号：US06275304B1

公开(公告)日：2001-08-14

申请号：US09219734

申请日：1998-12-22

申请人： Reiner Eschbach ,  Robert P. Loce

发明人： Reiner Eschbach ,  Robert P. Loce

IPC分类号： H04N158

CPC分类号： H04N1/58

摘要： A processing system for preparing a plural separation document image for printing, including small feature enhancement of the image, preventing halftoning damage thereto, including detecting small features in the document image; and in a detected small feature region, setting any output image signals corresponding to said small feature region to ON in at least one of the at least two separations.

摘要翻译： 一种用于准备用于打印的多个分离文档图像的处理系统，包括图像的小特征增强，防止对其进行半色调损坏，包括检测文档图像中的小特征; 并且在所检测的小特征区域中，在所述至少两个分离中的至少一个中将与所述小特征区域相对应的任何输出图像信号设置为ON。

公开(公告)号：US06181358B2

公开(公告)日：2001-01-30

申请号：US09195888

申请日：1998-11-19

申请人： Ronald E. Jodoin ,  Thomas J. Hammond ,  Henry P. Jankowski ,  Robert P. Loce

发明人： Ronald E. Jodoin ,  Thomas J. Hammond ,  Henry P. Jankowski ,  Robert P. Loce

IPC分类号： B41J2385

CPC分类号： B41J2/451

摘要： Arrays of light emitting diodes, and LED printbars and electrophotographic marking machines that use arrays of light emitting diode, that have active area geometries that produce compact irradiance profiles. Compact irradiance profiles are achieved by placing the diode electrodes along the outer periphery of the light emitting active areas. When used with gradient index lenses, such light emitting diodes produce light spots having more compact irradiance profiles. When such light emitting diodes and gradient index lenses are incorporated into LED printbars, and when those printbars are used in expose stations of electrophotographic marking machines, improved composite images can result.

摘要翻译： 发光二极管阵列，以及使用发光二极管阵列的LED打印条和电子照相打标机，其具有产生紧凑辐照度轮廓的有源面积几何形状。 通过将二极管电极沿着发光有源区域的外周放置来实现紧凑的辐照度曲线。 当与梯度折射率透镜一起使用时，这种发光二极管产生具有更紧密辐照度轮廓的光点。 当这种发光二极管和梯度折射率透镜并入LED打印棒中时，并且当这些印刷线用于电子照相打标机的曝光站时，可以产生改进的合成图像。

公开(公告)号：US5742703A

公开(公告)日：1998-04-21

申请号：US540998

申请日：1995-10-11

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

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

IPC分类号： H04N1/387 ,  G06T3/40 ,  G06T5/00 ,  H04N1/409 ,  G06K9/34 ,  G06K9/62 ,  H04N1/40

CPC分类号： H04N1/4092 ,  G06T3/403

摘要： The present invention is a method and apparatus for resolution enhancement of gray-scale input images including text and line art, and more particularly to a filtering method and image processing apparatus for enhancement of high contrast line edges found in continuous tone (gray-scale) images without requiring that the input image data include predetermined tag bits to identify region types (e.g., continuous tone or text and line art).

摘要翻译： 本发明是一种用于分辨率增强灰度输入图像的方法和装置，包括文本和行画，更具体地说，涉及一种用于增强连续色调（灰度级）中发现的高对比度线边缘的滤波方法和图像处理装置， 图像，而不需要输入图像数据包括用于识别区域类型（例如，连续色调或文本和线条艺术）的预定标签位。

公开(公告)号：US5537226A

公开(公告)日：1996-07-16

申请号：US343390

申请日：1994-11-22

申请人： George Wolberg ,  Robert P. Loce

发明人： George Wolberg ,  Robert P. Loce

IPC分类号： H04N1/19 ,  H04N1/047 ,  H04N1/10 ,  H04N1/193 ,  H04N1/40

CPC分类号： H04N1/0473 ,  H04N1/1013 ,  H04N1/193 ,  H04N2201/0471 ,  H04N2201/04787

摘要： The present invention is a method and apparatus for restoring or correcting digital images scanned in the presence of mechanical vibration, thereby improving the quality of the output image. In a document scanner, a linear sensor moving relative to a document placed upon a platen is scanned in a manner wherein fluctuations in the nominal scanning velocity are observed. Recognizing that the output of a single photosensor in the linear sensor array is proportional to the integrated irradiance received by the sensor as it scans through an exposure region, when vibratory motion of the sensor array is considered, the actual size of the exposure region is time-varying. The fluctuations or vibrations introduce artifacts such as brightness fluctuation and geometric warping which are eliminated or significantly reduced in accordance with the method of the present invention. Specifically, the instantaneous velocity of the linear sensor array is used to reconstruct an underlying piecewise linear model of the irradiance distribution. That reconstructed image is then resampled under ideal scanning conditions to produce the restored output.

摘要翻译： 本发明是用于恢复或校正在存在机械振动的情况下扫描的数字图像的方法和装置，从而提高输出图像的质量。 在文件扫描器中，以一种其中观察到标称扫描速度的波动的方式扫描相对于放置在压板上的文件移动的线性传感器。 认识到当传感器阵列的振动运动被考虑时，线性传感器阵列中的单个光电传感器的输出与传感器扫描通过曝光区域所接收的积分辐照度成正比，曝光区域的实际尺寸为时间 - 变化。 根据本发明的方法，波动或振动引起诸如亮度波动和几何翘曲之类的伪影消除或显着减少。 具体来说，线性传感器阵列的瞬时速度用于重建辐照度分布的底层分段线性模型。 然后在理想的扫描条件下对该重构图像进行再采样以产生恢复的输出。

公开(公告)号：US5493419A

公开(公告)日：1996-02-20

申请号：US502791

申请日：1995-07-14

申请人： Ronald E. Jodoin ,  Robert P. Loce ,  R. Victor Klassen ,  Ying-Wei Lin

发明人： Ronald E. Jodoin ,  Robert P. Loce ,  R. Victor Klassen ,  Ying-Wei Lin

IPC分类号： G06T5/00 ,  H04N1/40 ,  H04N1/405

CPC分类号： H04N1/40075

摘要： The present invention is a method and apparatus for the enhancement of 1 bit per pixel image signals to produce a multiple-bit per pixel form. A binary input image is passed through a plurality of filters to generate level slices. The filters are stack filters implemented as look-up table or template-based filters, morphological filters, or any similar binary-to-binary filters that could be used to generate level slices. Each of the N-1 filters is used to produce the slices, where N is the number of possible gray-scale levels desired in the output image. Once the slices are generated, the resulting binary image data therein is recombined, by adding or stacking, to produce the desired multiple-bit per pixel output.

公开(公告)号：US5471320A

公开(公告)日：1995-11-28

申请号：US241432

申请日：1994-05-11

申请人： Ronald E. Jodoin ,  Robert P. Loce ,  R. Victor Klassen ,  Ying-Wei Lin

发明人： Ronald E. Jodoin ,  Robert P. Loce ,  R. Victor Klassen ,  Ying-Wei Lin

IPC分类号： G06T5/00 ,  H04N1/40 ,  H04N1/407

CPC分类号： H04N1/40075

摘要： The present invention is a method and apparatus for the enhancement of 1 bit per pixel image signals to produce a multiple-bit per pixel form. A binary input image is passed through a plurality of filters to generate level slices. The filters are stack filters implemented as look-up table or template-based filters, morphological filters, or any similar binary-to-binary filters that could be used to generate level slices. Each of the N-1 filters is used to produce the slices, where N is the number of possible gray-scale levels desired in the output image. Once the slices are generated, the resulting binary image data therein is recombined, by adding or stacking, to produce the desired multiple-bit per pixel output.

摘要翻译： 本发明是一种用于增强每像素1位像素信号以产生每像素多位的形式的方法和装置。 二进制输入图像通过多个滤波器以生成电平切片。 过滤器是实现为查找表或基于模板的过滤器，形态过滤器或可用于生成级别切片的任何类似的二进制到二进制过滤器的堆栈过滤器。 N-1滤波器中的每一个用于产生切片，其中N是输出图像中所需的可能的灰度级数。 一旦片被生成，其中的所得到的二进制图像数据通过加法或堆叠进行重组，以产生期望的多位每像素输出。

公开(公告)号：US5263128A

公开(公告)日：1993-11-16

申请号：US799265

申请日：1991-11-27

申请人： Michael S. Cianciosi ,  Robert P. Loce ,  Jean-Michel Guerin ,  Aron Nacman

发明人： Michael S. Cianciosi ,  Robert P. Loce ,  Jean-Michel Guerin ,  Aron Nacman

IPC分类号： H04N5/76 ,  B41J2/44 ,  H01S5/068 ,  H04N1/40 ,  G06F3/12

CPC分类号： H04N1/40037

摘要： A method and apparatus which eliminates beat like artifacts that occur when an RF signal is mixed with a pulsed signal of similar, but not identical, frequency to the RF signal. A controller for synchronizing the phase of a RF carrier signal to a video signal provides beat elimination in a high pixel rate laser printer. The video signal and RF carrier signal are multiplied and sent to an acousto-optic modulator for pulsing a uniform burst of energy in the form of a laser beam to a photoconductor. The controller may include a synchronous gateable crystal oscillator with logic such as TTL, CMOS, ECL or equivalent logic functions using discrete transistors, where the synchronous gateable crystal oscillator is frequency dependent upon a laser printing speed. Eliminating imaging defects such as variable pixel width and density provides a sharper, uniform pixel printout.

摘要翻译： 一种方法和装置，其消除了当RF信号与RF信号具有类似但不相同频率的脉冲信号混合时发生的搏动像伪影。 用于将RF载波信号的相位与视频信号同步的控制器在高像素率激光打印机中提供消除噪点。 将视频信号和RF载波信号相乘并发送到声光调制器，用于以激光束的形式将均匀的能量脉冲脉冲到光电导体。 该控制器可以包括具有逻辑例如TTL，CMOS，ECL或使用分立晶体管的等效逻辑功能的同步可选晶体振荡器，其中同步可选晶体振荡器的频率取决于激光打印速度。 消除诸如可变像素宽度和密度的成像缺陷提供了更清晰，均匀的像素打印输出。

公开(公告)号：US4903074A

公开(公告)日：1990-02-20

申请号：US336992

申请日：1989-04-12

申请人： William L. Lama ,  Robert P. Loce ,  Martin Pepe, Jr. ,  Eleanor Whitte ,  Robert P. Siegel ,  Antje B. Parker ,  Peter Watson

发明人： William L. Lama ,  Robert P. Loce ,  Martin Pepe, Jr. ,  Eleanor Whitte ,  Robert P. Siegel ,  Antje B. Parker ,  Peter Watson

IPC分类号： G03B27/62 ,  G03G15/00

CPC分类号： G03G15/60 ,  G03B27/625 ,  G03G2215/00185

摘要： A document feeder is provided for presenting documents to the platen of a copier for copying with a vacuum belt platen transport system having document transporting belts movable under a substantially planar vaccum plenum backing. Also included is a vacuum system for applying a partial vacuum to a document sheet being transported by the movable belts over the platen. Show-through and show-around problems are reduced by optically mtching the belts and the plenum backing. In the preferred embodiment, the background surface is slightly roughend and made to be approximately 92% reflective to light during image exposure. The belts are composed of a urethane material which is approximately 16% transmissive but provides a 91% reflectance when moving along the plenum surface.

摘要翻译： 提供了一种文件馈送器，用于将文件呈现在复印机的压板上，用于通过真空带压板输送系统进行复印，所述真空带压板输送系统具有可在基本上平面的真空充气背衬下移动的文档传 还包括真空系统，用于将部分真空施加到由可移动带在压板上传送的原稿上。 通过旋转皮带和充气背衬来减少显示和显示问题。 在优选实施例中，背景表面稍微变粗糙并且在图像曝光期间被制成大约92％的反射光。 皮带由氨基甲酸乙酯材料构成，其大约为16％透射性，但是当沿着气室表面移动时，它提供了91％的反射率。

公开(公告)号：US4761062A

公开(公告)日：1988-08-02

申请号：US923455

申请日：1986-10-27

申请人： Robert P. Loce ,  John A. Durbin ,  William L. Lama

发明人： Robert P. Loce ,  John A. Durbin ,  William L. Lama

IPC分类号： G02B3/00 ,  G02B6/04

CPC分类号： G02B3/0087 ,  G02B3/0056

摘要： A gradient index lens array having improved stray light characteristics is enabled by coating the surfaces of the fibers comprising the array with a low transmittance, low viscosity material. The index of this material is matched to that of the fiber surface to prevent Fresnel reflection. The interstitial areas of the lens array comprises a light absorbing material. In another embodiment, stray light caused by light scattering at the end faces of the lens array is reduced by masking the end face with a mask having apertures overlying the fiber faces. The mask apertures have slightly smaller diameters to mask out the rough outer edge of the fibers.

摘要翻译： 具有改善的杂散光特性的梯度折射率透镜阵列可以通过用低透射率，低粘度的材料涂覆包括阵列的纤维的表面来实现。 该材料的指数与纤维表面的指数匹配，以防止菲涅耳反射。 透镜阵列的间隙区域包括光吸收材料。 在另一个实施例中，通过用具有覆盖在光纤面上的孔的掩模掩蔽端面来减少由透镜阵列的端面处的光散射引起的杂散光。 掩模孔径具有略小的直径以掩盖纤维的粗糙外边缘。