公开(公告)号：US06697168B2

公开(公告)日：2004-02-24

申请号：US09740650

申请日：2000-12-18

Applicant: Jörg Olaf Von Wechgeln

Inventor： Jörg Olaf Von Wechgeln

IPC: H04N1407

CPC classification number: H04N1/4055

Abstract: A method for calibrating image recording equipment is described. According to the method, raster areas such as images or color prints are recorded pixel by pixel, line by line in the form of screen dots on an image support by use of at least one exposure beam generated in an exposure unit. An image stored as a bit-map image and containing line data (binary image) is divided into fields. A raster percentage is determined for every field by calculating an average. A variation in the raster percentage is determined from a density-exposure curve. The parameters required for the variation are calculated by an algorithm and memorized in a variation table. The most suitable algorithm is read from the variation table and executed and the data determined thereby are memorized.

Abstract translation: 描述了用于校准图像记录设备的方法。 根据该方法，通过使用在曝光单元中产生的至少一个曝光束，以图像支持上的屏幕点的形式逐行地逐行记录诸如图像或彩色打印的光栅区域。 存储为位图图像并包含行数据（二进制图像）的图像被分为字段。 通过计算平均值为每个字段确定栅格百分比。 光栅百分比的变化由密度 - 曝光曲线确定。 通过算法计算变化所需的参数，并记录在变化表中。 从变化表读取最合适的算法，并执行，从而存储由此确定的数据。

公开(公告)号：US06535302B1

公开(公告)日：2003-03-18

申请号：US09144449

申请日：1998-09-01

Applicant: Yuichi Ikeda ,  Nobuatsu Sasanuma ,  Tetsuya Atsumi ,  Yasuhiro Saito

Inventor： Yuichi Ikeda ,  Nobuatsu Sasanuma ,  Tetsuya Atsumi ,  Yasuhiro Saito

IPC: H04N1407

CPC classification number: H04N1/407

Abstract: When pixels in a two-dimensional matrix are divided into lines A and B in the column (or row) direction (sub-scanning direction) and two neighboring pixels in the row (or column) direction are subjected to gradation correction respectively using characteristic curves for lines A and B, the characteristic curve for line B unpreferably has a stepwise characteristic portion having a step when it is stored in an LUT, due to quantization errors unique to digital values. Hence, the characteristic curve for line A is set to be decreased by the amount corresponding to the step.

Abstract translation: 当二维矩阵中的像素被分成行（或行）方向（副扫描方向）的行A和B，并且行（或列）方向上的两个相邻像素分别使用特性曲线 对于线A和B，由于数字值唯一的量化误差，线B的特性曲线优选地具有逐步特征部分，当其存储在LUT中时具有步骤。 因此，将线A的特性曲线设定为与步骤对应的量减少。

公开(公告)号：US06462838B1

公开(公告)日：2002-10-08

申请号：US09275294

申请日：1999-03-24

Applicant: Katsuyuki Hirata ,  Kentaro Katori

Inventor： Katsuyuki Hirata ,  Kentaro Katori

IPC: H04N1407

CPC classification number: H04N1/40087 ,  G06K15/00 ,  H04N1/4078

Abstract: A method of and apparatus for forming an image adapted to apply an error diffusion method to an input image data having N gradations so as to convert it into an output image data having M gradations, where M

Abstract translation: 一种用于形成图像的方法和装置，其适于将误差扩散方法应用于具有N个灰度的输入图像数据，以便将其转换为具有M个灰度的输出图像数据，其中M

公开(公告)号：US06501565B1

公开(公告)日：2002-12-31

申请号：US09721404

申请日：2000-11-21

Applicant: Ron J. Karidi ,  Lai Chee Man

Inventor： Ron J. Karidi ,  Lai Chee Man

IPC: H04N1407

CPC classification number: G06T5/005 ,  G06K9/44 ,  G06K2209/01 ,  G06T5/002 ,  G06T5/20 ,  G06T7/12 ,  G06T2207/10008 ,  G06T2207/30176

Abstract: Methods and apparatus are provided to smooth a jagged outline of a reconstructed text generated through any of a variety of systems, such as, for example, an image scanner. Given the reconstructed text with a jagged outline, the methods smooth the outline of the text first through location of horizontal and vertical edges, and subsequent gray scale reconstruction of the edge ink level from a one-bit or a low number of bits edge pattern. The methods then provide identification of the local text outline pattern and corresponding ink level adjustment of the center pixel. The methods produce text having very smooth horizontal and vertical edges. The methods then smooth slanted edges, mend holes in the text, and remove isolated pixels of ink.

Abstract translation: 提供了方法和装置来平滑通过诸如例如图像扫描器的各种系统中的任何一个产生的重建文本的锯齿形轮廓。 给定具有锯齿状轮廓的重建文本，该方法首先通过水平和垂直边缘的位置平滑文本的轮廓，以及从一位或低位数边缘图案的边缘墨水水平的后续灰度重建。 然后，该方法提供本地文本轮廓图案的识别和中心像素的对应墨水量调节。 该方法产生具有非常平滑的水平和垂直边缘的文本。 然后，方法可以平滑倾斜的边缘，修补文本中的孔，并清除墨水的孤立像素。

公开(公告)号：US06222640B1

公开(公告)日：2001-04-24

申请号：US09108199

申请日：1998-07-01

Applicant: Jacobus H. M. Peulen ,  Petrus A. M. Cornelissen ,  Romeo M. Van Strijp ,  Cornelis A. W. Ophelders

Inventor： Jacobus H. M. Peulen ,  Petrus A. M. Cornelissen ,  Romeo M. Van Strijp ,  Cornelis A. W. Ophelders

IPC: H04N1407

CPC classification number: H04N1/4072

Abstract: A digital copying device with an adjustable reproduction characteristic. This characteristic maps optical densities ODin of an original document onto optical densities ODout of a copy that is to be made of the original. The device does the following: establishes the reproduction characteristic as having a first part which maps onto an optical density value representing the tone white, a second part which maps onto optical density values between the optical density value representing white and an optical density value representing the tone black, and a third part which maps onto the optical density value representing black, where the first part is piecewise continuous with the second part at a first shoulder point, A, and where the second part is piecewise continuous with the third part at a second shoulder point, B; generates first digital image data corresponding to an image of an original document; converts the first digital image data into second digital image data according to the reproduction characteristic; and prints the second digital image data. One or both of an optical density value ODin corresponding to the first and second shoulder points, respectively, is set based upon an operator selection. The device can also be applied to changing the contrast in copying, in which case the parameter for adjusting the reproduction characteristic is the luminance value in the digital image data.

Abstract translation: 具有可调再现特性的数字复印装置。 该特性将原始文件的光密度ODin映射到由原始文件制成的拷贝的光密度ODout上。 该装置执行以下操作：将再现特性确定为具有映射到表示色调白色的光密度值的第一部分，第二部分映射到表示白色的光密度值和表示白色的光密度值之间的光密度值 以及第三部分，其映射到表示黑色的光密度值，其中第一部分在第一肩点A处与第二部分分段连续，并且其中第二部分在第一部分与第三部分分段连续 第二肩点，B; 产生对应于原始文档的图像的第一数字图像数据; 根据再现特性将第一数字图像数据转换成第二数字图像数据; 并打印第二数字图像数据。 基于操作员选择分别设置对应于第一和第二肩点的光密度值ODin中的一个或两者。 该装置还可用于改变复印中的对比度，在这种情况下，用于调整再现特性的参数是数字图像数据中的亮度值。

公开(公告)号：US06181438B2

公开(公告)日：2001-01-30

申请号：US09072122

申请日：1998-05-04

Applicant: Rosario A. Bracco ,  Michael Branciforte ,  David C. Robinson ,  James O. Mitchel ,  Thomas Robson ,  Robert P. Loce ,  Hoan N. Nguyen ,  Hung M. Pham ,  Daniel D. Truong ,  Louis D. Mailloux ,  Cathleen J. Raker ,  Sue K. Lam ,  Robert R. Thompson, Jr. ,  Farhad D. Rostamian ,  Cheryl A. Pence

Inventor： Rosario A. Bracco ,  Michael Branciforte ,  David C. Robinson ,  James O. Mitchel ,  Thomas Robson ,  Robert P. Loce ,  Hoan N. Nguyen ,  Hung M. Pham ,  Daniel D. Truong ,  Louis D. Mailloux ,  Cathleen J. Raker ,  Sue K. Lam ,  Robert R. Thompson, Jr. ,  Farhad D. Rostamian ,  Cheryl A. Pence

IPC: H04N1407

CPC classification number: H04N1/40093 ,  G06K2215/0071 ,  G06T5/008 ,  G06T5/20 ,  G06T2200/28 ,  G06T2207/10008 ,  G06T2207/30176 ,  H04N1/407

Abstract: A method and apparatus for the control of darkness/lightness in a digital image rendered by a printing system. The technique preferably employs templates to selectively apply different amounts of darkening (lightening) to borders of structures detected within the image dependent upon the need for darkening (lightening).

Abstract translation: 一种用于控制由打印系统呈现的数字图像中的黑暗度的方法和装置。 该技术优选地使用模板来根据需要变暗（减轻）来选择性地对图像中检测到的结构的边界施加不同量的变暗（发光）。

公开(公告)号：US06633409B1

公开(公告)日：2003-10-14

申请号：US09377823

申请日：1999-08-20

Applicant: Yoshirou Yamazaki

Inventor： Yoshirou Yamazaki

IPC: H04N1407

CPC classification number: H04N1/56

Abstract: The image processing apparatus has nonlinear processing device that performs nonlinear processing on a digital color signal. The nonlinear processing device comprises gray region discriminating device which discriminates whether the digital color signals are present in a gray proximate region including gray signals and region correspondence nonlinear processing device which performs the nonlinear processing differently in accordance with cases where the digital color signals are discriminated as signals inside the gray proximate region being present in the vicinity of the gray signals or as signals outside the gray proximate region being not present in the vicinity of the gray signals by the gray region discriminating device. The image processing apparatus realizes a three-dimensional retrieving table (3D-LUT) which does not cause subtle variations different from its aim in the output signals only with a small addition of memory capacity to the ordinary memory, ensuring that the gray reproduction can be performed consistently and that photographic prints of high quality are produced in succession.

Abstract translation: 图像处理装置具有对数字彩色信号进行非线性处理的非线性处理装置。 该非线性处理装置包括：灰度区域识别装置，其鉴别数字彩色信号是否存在于包含灰度信号的灰色近邻区域中，以及区域对应非线性处理装置，其根据数字彩色信号被区分为 存在于灰色信号附近的灰色近邻区域内的信号或由灰色区域识别装置不存在于灰色信号附近的灰色近邻区域外的信号。 图像处理装置实现三维检索表（3D-LUT），其仅在对普通存储器的存储容量小的情况下不会在输出信号中产生与其目标不同的微妙变化，确保灰度再现可以 一贯地执行，并且连续地生产高质量的照片。

公开(公告)号：US06633408B1

公开(公告)日：2003-10-14

申请号：US09342568

申请日：1999-06-29

Applicant: William A. Rozzi

Inventor： William A. Rozzi

IPC: H04N1407

CPC classification number: H04N1/603 ,  H04N1/6094 ,  H04N1/6097

Abstract: Predicting a reflectance spectrum of a photographic print based on data from a scanned color negative. The technique uses dye concentration, providing a channel-independent basis for the spectral model. The spectral model includes three conceptual sections: scanner and film models, a photographic printer model, and a photographic paper model. The scanner and film section converts digital data from a scan of a color negative on a calibrated scanner into predictions of the spectral transmittance for each pixel. The photographic printer section uses an exposure schedule and optionally a color temperature and computes the spectrum of the exposing illumination as a function of time. The photographic paper section converts the illuminated negative's spectral power first into dye concentration estimates and subsequently into a predicted reflectance spectrum for the simulated print.

Abstract translation: 基于来自扫描的彩色阴性的数据预测照相印刷品的反射光谱。 该技术使用染料浓度，为光谱模型提供与通道无关的基础。 光谱模型包括三个概念部分：扫描仪和胶片模型，照相打印机模型和照相纸模型。 扫描仪和胶片部分将来自经校准的扫描仪的彩色负片扫描的数字数据转换为每个像素的光谱透射率的预测。 照相打印机部分使用曝光时间表和可选的色温，并根据时间计算曝光照明的光谱。 照相纸部分首先将照明的负光谱功率转换成染料浓度估计值，然后转换为用于模拟印刷品的预测反射光谱。

公开(公告)号：US06538769B2

公开(公告)日：2003-03-25

申请号：US09092344

申请日：1998-06-05

Applicant: Akinori Yoshida ,  Hiroaki Ikeda ,  Motomi Takemoto ,  Tomokazu Kato

Inventor： Akinori Yoshida ,  Hiroaki Ikeda ,  Motomi Takemoto ,  Tomokazu Kato

IPC: H04N1407

CPC classification number: G03G15/5025 ,  G03G2215/00257 ,  G03G2215/0174 ,  G06K2215/004 ,  H04N1/00795 ,  H04N1/00806 ,  H04N1/56

Abstract: An image processing apparatus discriminates whether an original document is a color original document or a monochrome original document based on image data and performs image processing in an operational mode based on the result thereof. The image processing apparatus discriminates whether an image background area is color, and if a background area is determined to be color, the image processing apparatus provides image processing to the original document as a monochrome original document, in an operational mode used for a monochrome original document.

Abstract translation: 图像处理装置基于图像数据来判别原稿是彩色原稿还是单色原稿，并根据其结果进行操作模式的图像处理。 图像处理装置鉴别图像背景区域是否为彩色，并且如果背景区域被确定为彩色，则图像处理装置以单色原稿在作为单色原稿的操作模式中将原稿作为单色原稿进行图像处理 文件。

公开(公告)号：US06252678B1

公开(公告)日：2001-06-26

申请号：US09141112

申请日：1998-08-27

Applicant: Osamu Shimizu

Inventor： Osamu Shimizu

IPC: H04N1407

CPC classification number: H04N1/52 ,  H04N1/40087 ,  H04N1/4055

Abstract: A method for forming an image comprises the steps of dividing an inputted image into a plurality of unit areas, preparing at least five gradation conversion tables relating a density value of the density data to a dot generation energy value corresponding to a size of a dot to be printed, preparing a matrix dividing each of the unit areas into predetermined number of element areas, dividing each of the unit areas into predetermined number of the element areas by means of the matrix, assigning one of the plurality of gradation conversion tables to each of the element area in each of the unit area, and recording the dots converted from the density data, wherein the plurality of conversion tables are prepared in such a manner that there exists at least three converted energy values other than the minimum and the maximum values thereof at an arbitrary density value in halftone density, and wherein the plurality of conversion tables are prepared in such a manner that the number of element areas in which the minimum value of the converted energy is assigned is more than half of the number of all the element areas at the minimum density level having the maximum value of the converted energy.

Abstract translation: 一种用于形成图像的方法包括以下步骤：将输入的图像划分为多个单位区域，准备将浓度数据的浓度值与对应于点大小的点生成能量值相关联的至少五个灰度转换表， 准备将每个单位区域划分为预定数量的元素区域的矩阵，通过矩阵将每个单位区域划分成预定数量的元素区域，将多个灰度转换表中的一个分配给 记录从密度数据转换出的点的多个转换表，其中存在至少三个转换后的能量值，除了最小值和最大值之外， 以半色调浓度的任意密度值，并且其中多个转换表以如下方式制备：元素a 其中转换能量的最小值被分配的余量大于具有转换能量的最大值的最小密度级别的所有元素区域的数量的一半。