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51.发明授权System and apparatus for single subpixel elimination with local error compensation in a high addressable error diffusion process 有权用于在高可寻址误差扩散过程中采用局部误差补偿的单次子像素消除的系统和装置公开(公告)号：US06603575B2
公开(公告)日：2003-08-05
申请号：US10046687
申请日：2002-01-16
IPC分类号： H04N121
CPC分类号： H04N1/4052
摘要： A system and method for processing image data converts a pixel of image data having a first resolution to a plurality of subpixels, the plurality of subpixels representing a second resolution, the second resolution being higher than the first resolution. The plurality of subpixels are thresholded to generate a group of subpixel values for each pixel and a threshold error value. It is then determined if the group of subpixel values from the thresholding process produce a pattern containing an isolated subpixel. If the group of subpixel values from the thresholding process produce a pattern containing an isolated subpixel, the group of subpixel vales is modified to produce a pattern without an isolated subpixel. The modification process produces a subpixel error value which is compensated for localized error before being diffused to adjacent pixels.
摘要翻译： 用于处理图像数据的系统和方法将具有第一分辨率的图像数据的像素转换为多个子像素，所述多个子像素表示第二分辨率，第二分辨率高于第一分辨率。 多个子像素被阈值化以产生每个像素的一组子像素值和阈值误差值。 然后确定来自阈值处理的子像素值组是否产生包含隔离子像素的图案。 如果来自阈值处理的子像素值组产生包含隔离子像素的图案，则子像素值组被修改以产生没有隔离子像素的图案。 修改过程产生子像素误差值，其在被扩散到相邻像素之前被补偿了局部误差。
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52.发明授权公开(公告)号：US06529291B1
公开(公告)日：2003-03-04
申请号：US09401378
申请日：1999-09-22
申请人： Stuart A. Schweid , Jeng-nan Shiau , Zhigang Fan
发明人： Stuart A. Schweid , Jeng-nan Shiau , Zhigang Fan
IPC分类号： G06F1500
CPC分类号： H04N1/6025
摘要： A color conversion table designed to produce 0% under-color removal and a 100% under-color removal TRC are configured as a matched pair and are used to render an image from fuzzy detected color signals, including providing variable under-color removal to obtain fuzzy black conversion. The output of the color conversion table and the TRC are multiplied by a weighted value which depends on a value of a received neutral tag. The weighted outputs of the color conversion table and TRC are added such that a varying weighted output is generated. The generated output is used in image rendering to produce a smooth transition from a full color to monochrome, where variable amounts of under-color removal are obtained using the color correction table and TRC.
摘要翻译： 被设计为产生0％的底色去除和100％底色去除TRC的颜色转换表被配置为匹配对，并且用于从模糊检测到的颜色信号渲染图像，包括提供可变的底色去除以获得 模糊黑转换。 颜色转换表和TRC的输出乘以取决于所接收的中立标签的值的加权值。 添加颜色转换表和TRC的加权输出，使得生成变化的加权输出。 生成的输出用于图像渲染，以产生从全色到单色的平滑过渡，其中使用颜色校正表和TRC获得可变量的底色去除。
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53.发明授权公开(公告)号：US06198835B1
公开(公告)日：2001-03-06
申请号：US09004674
申请日：1998-01-08
IPC分类号： G06K900
CPC分类号： H04N1/00726 , G06T5/20 , H04N1/00002 , H04N1/00037 , H04N1/0005 , H04N1/00063 , H04N1/00068 , H04N1/00092
摘要： A system and method which enables the location and orientation of an image to be determined without introducing scanning artifacts into the rendered image. The system utilizes a separate set of sensors on a scanning bar that are sensitive to a wavelength of light outside the range of wavelengths of the typical sensors found on the scanning bar, such as red, green, or blue. Moreover, the system includes a light source which is capable of emitting the wavelength of light that is outside this range of wavelength of light. Thus, whenever the additional set of sensors detect light, the system would determine that the light was due to a scanning artifact, such as a hole, rip, or dog ear in the original document being scanned. Furthermore, the system would include a process which measures the variations of the image signal in the fastscan and slowscan directions, as well as, the gray level of the video signal from these various measurements, the system would develop a cost value as to the certainty as whether the signal represents a scanning artifact. In such a system, the backing would be embedded with a pattern which would have a predetermined variation in a fastscan direction but have little or no variation in a slowscan direction.
摘要翻译： 一种使得能够确定图像的位置和方位而不将扫描伪影引入到渲染图像中的系统和方法。 该系统在扫描杆上使用对扫描条上发现的典型传感器波长范围（例如红色，绿色或蓝色）的波长波长敏感的扫描条上的一组单独的传感器。 此外，该系统包括能够发射在该波长范围之外的光的波长的光源。 因此，每当附加的传感器组检测到光时，系统将确定光是由于扫描原件造成的，例如正在扫描的原稿中的孔，裂纹或狗耳等扫描伪影。 此外，该系统将包括测量图像信号在快扫和慢扫描方向上的变化的过程以及来自这些各种测量的视频信号的灰度级，系统将产生关于确定性的成本值 作为信号是否表示扫描伪像。 在这样的系统中，背衬将被嵌入具有在快扫方向上具有预定变化但在慢扫描方向上几乎没有或没有变化的图案。
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公开(公告)号：US5835630A
公开(公告)日：1998-11-10
申请号：US646865
申请日：1996-05-08
CPC分类号： H04N1/40062
摘要： A filter includes a plurality of one-dimensional first dimension filters operating in a first dimension, each of the filters operating on the digital image data in accordance with predetermined filter coefficients to produce a one-dimensional output signal. The filter also includes a plurality of one-dimensional filters, operating in a second, distinct dimension, each one-dimensional second dimension filter receiving output signals from one of the plurality of the first dimension filters and operating on the received output signals in accordance with predetermined filter coefficients to produce second filtered output signals therefrom. A weighting circuit is operatively connected to the one-dimensional second dimension filters to modify each of the produced second filtered output signals according to weighting coefficients.
摘要翻译： 滤波器包括在第一维中操作的多个一维第一维滤波器，每个滤波器根据预定的滤波器系数对数字图像数据进行操作以产生一维输出信号。 滤波器还包括以第二不同维度操作的多个一维滤波器，每一维二维滤波器接收来自多个第一维度滤波器中的一个的输出信号并根据接收到的输出信号进行操作 预定的滤波器系数以从其产生第二滤波输出信号。 加权电路可操作地连接到一维第二维滤波器，以根据加权系数修改所生成的第二滤波输出信号中的每一个。
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55.发明授权System and apparatus for single subpixel elimination in an high addressable error diffusion process 失效在高可寻址误差扩散过程中用于单个子像素消除的系统和装置
公开(公告)号：US5754706A
公开(公告)日：1998-05-19
申请号：US666770
申请日：1996-06-19
CPC分类号： G06T3/4007 , H04N1/4052
摘要： A system and method for processing image data converts a pixel of image data having a first resolution to a plurality of subpixels, the plurality of subpixels representing a second resolution, the second resolution being higher than the first resolution. The plurality of subpixels are thresholded to generate a group of subpixel values for each pixel and a threshold error value. It is then determined if the group of subpixel values from the thresholding process produce a pattern containing an isolated subpixel. If the group of subpixel values from the thresholding process produce a pattern containing an isolated subpixel, the group of subpixel vales is modified to produce a pattern without an isolated subpixel. The modification process produces a subpixel error value which is diffused in the slowscan direction to adjacent pixels.
摘要翻译： 用于处理图像数据的系统和方法将具有第一分辨率的图像数据的像素转换为多个子像素，所述多个子像素表示第二分辨率，第二分辨率高于第一分辨率。 多个子像素被阈值化以产生每个像素的一组子像素值和阈值误差值。 然后确定来自阈值处理的子像素值组是否产生包含隔离子像素的图案。 如果来自阈值处理的子像素值组产生包含隔离子像素的图案，则子像素值组被修改以产生没有隔离子像素的图案。 修改处理产生在慢扫描方向上扩散到相邻像素的子像素误差值。
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公开(公告)号：US5751862A
公开(公告)日：1998-05-12
申请号：US643427
申请日：1996-05-08
CPC分类号： H04N1/405 , H03H17/0202 , H04N1/40062
摘要： A filter for filtering digital image data includes a timing circuit to convert received line sync signal and a received page sync signal to a new line sync signal and a new page sync signal and a N.times.M filter to filter digital data based on the new line sync signal, the new video valid signal and the new page sync signal. N is a value representing a filter dimension in a slow scan direction, and M is a value representing a filter dimension in a fast scan direction. The timing circuit causes the self-timed image processing device to output (N-1)/2 scanlines of unfiltered digital image data after the received page sync signal indicates an end of an input page.
摘要翻译： 用于对数字图像数据进行滤波的滤波器包括定时电路，用于将接收到的行同步信号和接收到的页同步信号转换成新的行同步信号和新的页同步信号，以及NxM滤波器，以基于新的行同步信号对数字数据进行滤波 ，新的视频有效信号和新的页面同步信号。 N是表示慢扫描方向的滤波器尺寸的值，M表示快扫方向的滤波器尺寸。 定时电路使接收页面同步信号表示输入页面的结束之后，自定时图像处理装置输出未滤波数字图像数据的（N-1）/ 2个扫描线。
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57.发明授权Control system for aspect ratio and magnification of a raster output scanner 失效控制系统，用于光栅输出扫描仪的纵横比和放大倍数
公开(公告)号：US5530642A
公开(公告)日：1996-06-25
申请号：US338302
申请日：1994-11-14
CPC分类号： H04N1/393 , H04N1/1135
摘要： A control system for a ROS scanner in which the aspect ratio and magnification of an image is controlled by precise, real-time control of the relative velocities of the polygon mirror and the photoreceptor. Values related to monitored measurements of polygon mirror and photoreceptor velocity are mathematically combined with a reference clock value and other factors to yield real-time control signals. The control signals operate the polygon and photoreceptor motors to obtain a desired magnification and aspect ratio of images created on the photoreceptor.
摘要翻译： 一种用于ROS扫描器的控制系统，其中通过对多面镜和感光体的相对速度的精确的实时控制来控制图像的纵横比和放大倍率。 与多面镜和感光体速度的监视测量相关的数值与参考时钟值和其他因素数学结合以产生实时控制信号。 控制信号操作多边形和感光体电机，以获得在感光体上产生的图像的期望的放大倍数和纵横比。
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公开(公告)号：US5101232A
公开(公告)日：1992-03-31
申请号：US747041
申请日：1991-08-19
CPC分类号： G03G15/5008 , G03G21/145
摘要： An apparatus and associated method for controlling the velocity of the photoreceptor within a reprographic machine having a seamed, web type photoreceptor, for producing a plurality of images thereon. The images being separated by unexposed interdocument regions on the photoreceptor. The reprographic machine further including a registration apparatus for registering copy substrates with developed latent images. The process of assuring that the seamed region of the photoreceptor lies within an interdocument region begins by first sensing an actual phase relationship between the photoreceptor seam and the activity of the registration apparatus and then calculating a phase error value by comparing the actual phase relationship to a desired phase relationship. Next, the system determines an adjustment photoreceptor velocity as a function of the phase error. Subsequently, the photoreceptor is moved at a fixed velocity during exposure of the images. Changing the calculated reference and hence photoreceptor velocity is restricted to the interdocument zone, so that there are no velocity changes except when the interdocument zone is passing through the imaging station. This ensures that the registration requirements and image quality specifications are simultaneously accomplished.
摘要翻译： 一种用于控制具有接缝的腹板型感光体的复印机内的感光体的速度的装置和相关方法，用于在其上产生多个图像。 图像由感光体上的未曝光的介质区域分隔开。 该复印机还包括一个配准装置，用于配置具有显影的潜像的复制底物。 通过首先感测感光体接缝与配准设备的活动之间的实际相位关系来确定感光体的接缝区域在文档间区域内的过程，然后通过将实际相位关系与a相比较来计算相位误差值 期望的相位关系。 接下来，系统确定作为相位误差的函数的调节感光体速度。 随后，在图像曝光期间，感光体以固定的速度移动。 改变计算的参考因素和因此的光感受器速度被限制在文件间的区域，因此除了文档区域通过成像站之外，没有速度变化。 这确保了同时完成注册要求和图像质量规范。
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59.发明授权Distance estimation in camera-based systems utilizing motion measurement and compression attributes 有权使用运动测量和压缩属性的摄像机系统中的距离估计公开(公告)号：US09176221B2
公开(公告)日：2015-11-03
申请号：US13596411
申请日：2012-08-28
申请人： Stuart A. Schweid , Edgar A. Bernal
发明人： Stuart A. Schweid , Edgar A. Bernal
CPC分类号： G01S13/931 , G01S11/12 , G06T7/579 , H04N7/181
摘要： When estimating distance to an object in an image using a single camera, data acquired by an onboard accelerometer is analyzed to determine camera speed as the user takes a video of the object of interest. The compression that results during video processing is used to derive motion vectors for the object of interest in the scene. The motion vectors have an opposite direction to the camera motion and a magnitude that is a function of the unknown object distance and a known magnification level. The object distance is calculated from the estimated velocity and motion vector magnitude.
摘要翻译： 当使用单个相机估计图像中的物体的距离时，分析由车载加速度计获取的数据，以在用户拍摄感兴趣对象的视频时分析相机速度。 在视频处理期间产生的压缩用于导出场景中感兴趣对象的运动矢量。 运动矢量具有与相机运动相反的方向和作为未知物体距离和已知放大级别的函数的幅度。 物体距离是根据估计的速度和运动矢量大小计算的。
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60.发明授权Method to align and apply geometric distortion and uniformity compensation data 有权对齐和应用几何失真和均匀性补偿数据的方法公开(公告)号：US08879118B2
公开(公告)日：2014-11-04
申请号：US13012011
申请日：2011-01-24
CPC分类号： H04N1/401 , H04N1/387 , H04N1/6027
摘要： As set forth herein, computer-implemented methods and systems facilitate detecting non-uniformities (e.g., streaks or other defects) in a scanned image, and correcting the non-uniformities while accounting for geometric distortion therein. For instance a scanned image may include a light streak (e.g., higher L* values than expected) down the page at a given distance from a page edge. Paper shrinkage may also cause the image to be magnified relative to the page. Correction values (e.g., L* knockdown values or the like) are generated to bring the non-uniform L* values down to a darker level. To account for the magnification of the image, the correction values are electronically registered to uniformity data for the page, and applied at the correct location to account for the magnification. The corrected image is then printed by a marking device.
摘要翻译： 如本文所述，计算机实现的方法和系统便于检测扫描图像中的不均匀性（例如，条纹或其他缺陷），并且校正非均匀性，同时考虑其中的几何失真。 例如，扫描图像可以包括距离页边缘一定距离的页面下的轻条纹（例如，比期望的更高的L *值）。 纸张收缩也可能导致相对于页面放大图像。 产生校正值（例如，L *击倒值等）以使不均匀的L *值下降到较暗的水平。 为了考虑图像的放大率，将校正值以电子方式登记到页面的均匀性数据，并将其应用于正确的位置以考虑放大率。 然后通过标记装置打印校正的图像。
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