公开(公告)号：US07116443B2

公开(公告)日：2006-10-03

申请号：US10137677

申请日：2002-05-02

Applicant: John C. Handley ,  Ying-wei Lin

Inventor： John C. Handley ,  Ying-wei Lin

IPC: H04N1/60 ,  G03F3/08 ,  G06K9/00

CPC classification number: H04N1/56 ,  G01J3/462

Abstract: A method for neutral pixel detection using color space feature vectors wherein one color space coordinate represents lightness is provided. The method includes the following steps: a) receiving an input image represented in a first color space; b) converting the input image to a second color space wherein one coordinate represents lightness; c) selecting a pixel in the second color space representation to be classified; d) computing second color space feature vectors associated with the selected pixel; and e) classifying the selected pixel between neutral and color classes based on the values computed for the second color space feature vectors. Typically, the input image is processed using a smoothing filter to create a smoothed input image prior to the conversion to the second color space. The method can be adapted to page processing or strip processing schemes with respect to the input image.

公开(公告)号：US06834124B1

公开(公告)日：2004-12-21

申请号：US09687111

申请日：2000-10-16

Applicant: Ying-wei Lin ,  Robert P. Loce

Inventor： Ying-wei Lin ,  Robert P. Loce

IPC: G06K940

CPC classification number: G06T5/001 ,  H04N1/40

Abstract: An adaptive image enhancement filter includes a template matching module for comparing an observed pixel pattern comprising a target pixel and one or more neighboring pixels to a set of templates to determine if the observed pixel pattern matches any of the templates. The template matching module generates a match identifier signal indicating which of the templates, if any, the observed pixel pattern is found to match. Based on this match identifier, a signal generation module provides an enhanced output signal for the target pixel. The template matching and/or the signal generation modules can be independently modified to adapt to changing conditions as identified by signals identifying image attributes and marking process attributes.

Abstract translation: 自适应图像增强滤波器包括模板匹配模块，用于将包括目标像素和一个或多个相邻像素的观察像素图案与一组模板进行比较，以确定观察到的像素图案是否匹配任何模板。 模板匹配模块生成匹配标识符信号，指示哪个模板（如果有的话）发现观察到的像素图案匹配。 基于该匹配标识符，信号生成模块为目标像素提供增强的输出信号。 可以独立地修改模板匹配和/或信号生成模块以适应由识别图像属性和标记处理属性的信号所识别的变化的条件。

公开(公告)号：US5729663A

公开(公告)日：1998-03-17

申请号：US569036

申请日：1995-12-07

Applicant: Ying-wei Lin ,  Leon C. Williams

Inventor： Ying-wei Lin ,  Leon C. Williams

IPC: H04N1/405 ,  H04N1/40 ,  H04N1/41

CPC classification number: H04N1/40087

Abstract: The present invention is a method and apparatus for generating N-bit per pixel output signals in response to M-bit per pixel image input signals, where M is greater than N. The invention employs a halftone cell threshold memory that stores a single threshold for each cell element. During real-time processing of the video image signals, multiple thresholds are calculated based upon the stored thresholds, and the image signals are compared to the thresholds. The threshold calculation process is simplified by using equally spaced constants and any desired variation from the resulting equally spaced thresholds is accomplished through a remapping of the video image signals using a look-up table. The output of the plurality of comparisons carried out for each halftone cell element is then encoded to produce a digital gray-scale output signal.

Abstract translation: 本发明是一种用于响应于M位每像素图像输入信号产生N位每像素输出信号的方法和装置，其中M大于N.本发明采用半色调单元阈值存储器，其存储单个阈值 每个单元格元素。 在视频图像信号的实时处理期间，基于存储的阈值计算多个阈值，并将图像信号与阈值进行比较。 通过使用等间隔的常数来简化阈值计算过程，并且通过使用查找表重新映射视频图像信号来实现来自所得等间隔的阈值的任何期望的变化。 然后对每个半色调单元元素执行的多个比较的输出被编码以产生数字灰度输出信号。

公开(公告)号：US5237432A

公开(公告)日：1993-08-17

申请号：US812334

申请日：1991-12-23

Applicant: Anthony F. Calarco ,  Ying-wei Lin ,  Leon C. Williams

Inventor： Anthony F. Calarco ,  Ying-wei Lin ,  Leon C. Williams

IPC: H04N1/393 ,  G06T3/40 ,  G06T3/60

CPC classification number: G06T3/4007 ,  G06T3/60

Abstract: An image processing system for altering the size of an image represented by a plurality of input video signals including a controller for producing a scale factor and a scale factor valid signal. The controller also includes a padder which is used to increase the accuracy of the scale factor during the operation of the controller. The signals generated by the controller are passed to an interpolator suitable for producing an output signal as a function of one or more of the input video signals in response to the scale factor and scale factor valid signal.

Abstract translation: 一种用于改变由多个输入视频信号表示的图像的尺寸的图像处理系统，包括用于产生比例因子的控制器和比例因子有效信号。 控制器还包括一个焊盘，用于在控制器的操作期间提高比例因子的精度。 由控制器产生的信号被传送到适于根据比例因子和比例因子有效信号产生作为一个或多个输入视频信号的函数的输出信号的内插器。

公开(公告)号：US4920428A

公开(公告)日：1990-04-24

申请号：US216475

申请日：1988-07-08

Applicant: Ying-wei Lin ,  Anthony F. Calarco

Inventor： Ying-wei Lin ,  Anthony F. Calarco

IPC: G06T1/00 ,  H04N1/04 ,  H04N1/401 ,  H04N1/409 ,  H04N5/365 ,  H04N5/367 ,  H04N5/369

CPC classification number: H04N1/409 ,  H04N1/401 ,  H04N5/3655 ,  H04N5/367 ,  H04N5/3692

Abstract: Method and apparatus to increase the range of correction of photosite offset and gain response. Each photosite is provided with a correction value for offset and gain response based on measured light intensity value, which is stored in memory. Each photosite correction value is also provided with an attribute value which indicates whether the correction values are to be used as stored, whether a shift of the values is appropriate, in accordance with a stored shift value, or whether the photosite is noncorrectable, and accordingly requires the implementation of a bad pixel routine. Depending on the attribute value, logic is enabled to vary the correction values in accordance with a stored routine for shifting the stored correction value, or implementing a bad pixel routine. If the attribute requires a shifted value, the correction value is shifted a number of places in accordance with a shift stored in the decoder, before it is applied. If the attribute indicates that the photosite response is not correctable, a bad pixel correction routine is enabled, to produce substitute data.

公开(公告)号：US4916551A

公开(公告)日：1990-04-10

申请号：US289081

申请日：1989-02-02

Applicant: Ying-wei Lin ,  Anthony F. Calarco ,  Lisa M. Yamonaco

Inventor： Ying-wei Lin ,  Anthony F. Calarco ,  Lisa M. Yamonaco

IPC: H04N1/387 ,  G06T1/20 ,  G06T3/00 ,  H04N1/193

CPC classification number: H04N1/193

Abstract: A method and apparatus for processing a scan line of image data, wherein image data from portions of the scan line is processed simultaneously along plural channels, each channel processing a portion of the image data, and provided with context information from an adjacent portion of the scan line. Context pixels are added at the trail edge of a first scan line portion, derived from the lead edge of a second scan line portion. In certain image processing requiring preceding and succeeding pixel context information, subsequent to processing, on correctly processing pixels are transferred for subsequent processing, and pixels at the trail edge of a first scan line portion, and the lead edge of a second scan line portion are not transferred, leaving complementary scan line portions.

Abstract translation: 一种用于处理图像数据的扫描线的方法和装置，其中来自扫描线的部分的图像数据被同时沿多个通道被处理，每个通道处理图像数据的一部分，并且提供有来自相邻部分的上下文信息 扫描线。 在从第二扫描线部分的引导边缘导出的第一扫描线部分的尾部边缘处添加上下文像素。 在需要前后像素上下文信息的某些图像处理中，在对正确处理像素的处理之后，传送用于后续处理的处理，并且第一扫描线部分的尾部边缘处的像素和第二扫描线部分的引导边缘 不传输，留下补充扫描线部分。

公开(公告)号：US4639115A

公开(公告)日：1987-01-27

申请号：US718615

申请日：1985-04-01

Applicant: Ying-wei Lin

Inventor： Ying-wei Lin

IPC: G03G15/08 ,  G03G15/09

CPC classification number: G03G15/0887

Abstract: Apparatus for purifying toner prior to its use in developing latent electrostatic images. An electrically biased roll supported in the developer housing contiguous at least one of the development rolls serves to attract paper debris from the toner contained in the toner carried by the developer roll. The roll is fabricated from a suitable insulating material and electrically biased in a manner suitable for attracting the paper debris contained in the toner. The roll is rotated and a scraper blade is provided for removing the debris therefrom. The debris so removed is allowed to fall into a toner catch tray which can be provided with an auger for moving it out of the tray to thereby increase the capacity of the system for debris removal.

Abstract translation: 用于在静电潜像显影之前使用调色剂的设备。 邻近显影辊中的至少一个显影辊的支撑在显影剂壳体中的电偏压辊用于吸收由显影辊承载的调色剂中所含的调色剂中的纸屑。 辊由合适的绝缘材料制成并以适于吸引包含在调色剂中的纸屑的方式进行电偏压。 旋转辊，并且设置刮刀以便从中除去碎屑。 允许如此去除的碎屑落入调色剂捕集托盘中，该调色剂捕获托盘可以设置有用于将其从托盘移出的螺旋推运器，从而增加系统的碎屑去除能力。