公开(公告)号：US07239430B2

公开(公告)日：2007-07-03

申请号：US10318614

申请日：2002-12-12

Applicant: Jeng-nan Shiau ,  Ying-wei Lin

Inventor： Jeng-nan Shiau ,  Ying-wei Lin

IPC: H04N1/405

CPC classification number: G06K9/00456 ,  H04N1/40062 ,  H04N1/405

Abstract: A method to detect frequency and angle of a binary halftone pattern. The method employs an exclusive-or operation which is applied locally to a region of a binary bit map and its spatially shifted version. The resulting bits from the exclusive-or operation are summed over the region. The exclusive-or operation is repeated for a range of shift values. In a halftone region, the shift at which the minimum sum occurs reflects the angle and the frequency of the halftone.

Abstract translation: 检测二进制半色调图案的频率和角度的方法。 该方法采用本地应用于二进制位图及其空间位移版本的区域的异或运算。 来自独占或操作的结果位在该区域相加。 对一系列移位值重复执行异或操作。 在半色调区域中，最小和发生的偏移反映了半色调的角度和频率。

公开(公告)号：US07218332B2

公开(公告)日：2007-05-15

申请号：US10135139

申请日：2002-04-30

Applicant: Hui Cheng ,  Ying-wei Lin

Inventor： Hui Cheng ,  Ying-wei Lin

IPC: G06T15/00

CPC classification number: H04N1/00 ,  G06T11/00 ,  H04N1/00798

Abstract: Systems and methods are presented for processing and rendering image data during a single pass through the image data. A method includes loading scanlines of image data into a rolling band buffer, performing a windowing technique on the image data, and determining if a class change was experienced by any window having a portion in an output scanline of the buffer. The method further includes processing image data in the output scanline for a window portion that experienced a class change, using a blended rendering algorithm. If no class change is detected, the method includes processing image data in the output scanline for the window portion using a class-based rendering algorithm. The method optionally includes rendering processed image data for the output scanline to a rendering device. According to other features, an apparatus includes a rolling band buffer, a windowing processor, class-based rendering algorithms, and a blended rendering algorithm.

Abstract translation: 呈现系统和方法，用于在单次传递图像数据期间处理和渲染图像数据。 一种方法包括将图像数据的扫描线加载到滚动带缓冲器中，对图像数据执行加窗技术，以及确定是否由具有缓冲器的输出扫描线中的一部分的任何窗口经历了类别改变。 该方法还包括使用混合渲染算法来处理经历类别改变的窗口部分的输出扫描线中的图像数据。 如果没有检测到类更改，则该方法包括使用基于类的呈现算法来处理窗口部分的输出扫描线中的图像数据。 该方法可选地包括将处理的输出扫描线的图像数据渲染到呈现设备。 根据其他特征，一种装置包括滚动带缓冲器，加窗处理器，基于类的渲染算法和混合渲染算法。

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：US6069973A

公开(公告)日：2000-05-30

申请号：US106750

申请日：1998-06-30

Applicant: Ying-wei Lin ,  Hong Li

Inventor： Ying-wei Lin ,  Hong Li

IPC: G06T5/20 ,  H04N1/48 ,  H04N5/365 ,  H04N9/07 ,  G06K9/60 ,  H04N1/60 ,  H04N9/67

CPC classification number: H04N5/3651 ,  G06T5/20 ,  H04N1/486 ,  H04N9/045

Abstract: A method for calibrating a multi-chip image sensor, and an imaging system having a multi-chip sensor that includes color correction factors generated by such a method. The image sensor is successively controlled to image three different test targets. After imaging each target, a set of correction factors is generated and used to correct image signals generated when imaging the next test target. A first set of correction factors corrects for pixel-to-pixel variations between imaging elements in the array. The second set of correction factors corrects for chip-to-chip variations between chips in the array. The third set of correction factors corrects for array-wide variations compared to a standard color chart.

Abstract translation: 一种用于校准多芯片图像传感器的方法，以及具有包括通过这种方法产生的颜色校正因子的多芯片传感器的成像系统。 图像传感器被连续地控制成三个不同的测试目标。 在对每个目标进行成像之后，产生一组校正因子并用于校正在下一个测试目标成像时产生的图像信号。 第一组校正因子校正阵列中成像元件之间的像素到像素的变化。 第二组校正因子校正阵列中芯片之间的芯片到芯片的差异。 与标准色彩图相比，第三组校正因子校正了阵列范围的变化。

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：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。