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：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：US4811115A

公开(公告)日：1989-03-07

申请号：US109677

申请日：1987-10-16

Applicant: Ying-Wei Lin ,  Anthony F. Calarco

Inventor： Ying-Wei Lin ,  Anthony F. Calarco

IPC: G06T7/00 ,  H04N1/40

CPC classification number: H04N1/40062

Abstract: Method and apparatus for processing a stream of image pixel data to determine the presence of high frequency half-tone data. The arrangement applies the function ##EQU1## to a stream of image pixel data. The presence of minimums of .phi.(k) at times indicative of predetermined half-tone image frequencies is detected and an output signal indicative of the presence or absence of minimums at the predetermined half-tone image frequencies is provided. More particularly, the two's complement of the stream of image pixel data is added to each of a plurality of differently delayed signals derived from the original stream of image pixel data. The absolute value is taken of the resulting function. The signal is summed for a selected number of pixels, corrected for noise, and reviewed for minimums. Minimums occurring at selected positions in the pixel stream indicate certain frequencies of the data. An output is created based on frequency indications.

Abstract translation: 用于处理图像像素数据流以确定高频半色调数据的存在的方法和装置。 该装置将功能应用于图像像素数据流。 检测在指示预定的半色调图像频率的时刻存在最小的phi（k），并且提供指示在预定的半色调图像频率下存在或不存在最小值的输出信号。 更具体地，将图像像素数据流的二进制补码添加到从原始图像像素数据流导出的多个不同延迟的信号中的每一个。 取得所得函数的绝对值。 对于所选数量的像素，对噪声进行校正，并对最小值进行检查，求和信号。 出现在像素流中的选定位置的最小值表示数据的某些频率。 基于频率指示创建输出。

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。