公开(公告)号：US06721066B2

公开(公告)日：2004-04-13

申请号：US09834940

申请日：2001-04-16

申请人： Yoshihiko Hirota ,  Hiroyuki Suzuki ,  Toru Kasamatsu

发明人： Yoshihiko Hirota ,  Hiroyuki Suzuki ,  Toru Kasamatsu

IPC分类号： G06K1500

CPC分类号： H04N1/3935 ,  H04N1/4072 ,  H04N1/4092 ,  H04N1/56

摘要： In an image forming apparatus, a black edge of a document image is emphasized, and the black edge is detected by deciding an edge from the lightness data and by deciding a black color from the chroma data. The data of cyan, magenta and yellow of a pixel at a black edge are replaced with minima of data of cyan, magenta and yellow of pixels in a prescribed region around the pixel. In order to prevent erroneous decision of a black edge, if a number of isolated pixels is larger than a threshold level, a decision as a pixel at a black edge is invalidated. Automatic exposure can be performed on a color document for correcting a background of the document obtained in a prescan. The background level of the document is determined only on pixels decided to be black. When color balance is adjusted on one of the data of cyan, magenta, yellow and black, the density is kept constant. A part of a color document is reproduced in a sheet of paper with use of different levels of an image forming condition such as edge emphasis. That is, image data on the same part of the color data are supplied repeatedly, while image forming condition on the color data are changed successively. Then, the color data of the part is formed repeatedly in a sheet of paper at different levels of the image forming condition.

摘要翻译： 在图像形成装置中，强调文件图像的黑色边缘，并且通过根据亮度数据确定边缘并通过从色度数据确定黑色来检测黑色边缘。 在黑色边缘处的像素的青色，品红色和黄色的数据被替换为在像素周围的规定区域中的青色，品红色和黄色像素的数据的最小值。 为了防止黑色边缘的错误判定，如果多个孤立像素大于阈值电平，则作为黑色边缘处的像素的判定无效。 可以在彩色文档上执行自动曝光，以校正在预扫描中获得的文档的背景。 仅在决定为黑色的像素上确定文档的背景级别。 当在青色，品红色，黄色和黑色的数据之一上调整色彩平衡时，密度保持不变。 使用不同程度的图像形成条件（例如边缘强调），以一张纸再现彩色文档的一部分。 也就是说，重复地提供彩色数据的相同部分上的图像数据，同时连续地改变颜色数据上的图像形成条件。 然后，在图像形成条件的不同水平的纸张中重复地形成该部分的颜色数据。

公开(公告)号：US5726780A

公开(公告)日：1998-03-10

申请号：US559431

申请日：1995-11-15

申请人： Yoshihiko Hirota ,  Hiroyuki Suzuki ,  Toru Kasamatsu

发明人： Yoshihiko Hirota ,  Hiroyuki Suzuki ,  Toru Kasamatsu

IPC分类号： G03G15/01 ,  H04N1/387 ,  H04N1/46 ,  H04N1/60

CPC分类号： H04N1/3875 ,  H04N1/6033

摘要： In an image processing apparatus of the invention, HVC conversion is performed stably. THat is, an image sensor reads image data of red, green and blue of a document, while a memory stores brightness data V of a color patch. When the image data are converted to a brightness data V and color difference data WR and WB, coefficients used in the conversion of the HVC conversion are calculated by an operator based on the image data of red, green and blue of the color patch read by the image sensor and the brightness data V stored in the memory.

摘要翻译： 在本发明的图像处理装置中，稳定地进行HVC转换。 也就是说，图像传感器读取文档的红色，绿色和蓝色的图像数据，而存储器存储色标的亮度数据V. 当图像数据被转换为亮度数据V和色差数据WR和WB时，由HVC转换的转换中使用的系数由操作者基于由彩色补丁读取的红色，绿色和蓝色的图像数据计算 图像传感器和存储在存储器中的亮度数据V.

公开(公告)号：US5604825A

公开(公告)日：1997-02-18

申请号：US226368

申请日：1994-04-12

申请人： Yoshihiko Hirota ,  Katsuaki Tajima

发明人： Yoshihiko Hirota ,  Katsuaki Tajima

IPC分类号： H04N1/393 ,  G06T3/40 ,  H04N1/40 ,  H04N1/409 ,  G06T5/20

CPC分类号： G06T3/4023

摘要： The present invention relates to an image processing apparatus for carrying out a variable scale magnification processing for contracting or enlarging an original image. The image processing apparatus including a variable scale moving unit for increasing pixels in accordance with a variable scale magnification in order to enlarge the original image includes a smoothing processing unit for smoothing pixel data. The smoothing processing unit detects the number of increased pixels for each pixel by an increased pixel number determining unit, so as to smooth image data output from the variable scale magnification moving unit by employing smoothing filters of a matrix size selected in accordance with the result of the detection. This results in an image processing apparatus that can prevent a degradation in image quality by an appropriate smoothing processing independently of whether a variable scale magnification in enlargement is integer or not.

摘要翻译： 本发明涉及一种用于执行缩放或放大原始图像的可变比例缩放处理的图像处理装置。 包括用于根据可变比例缩放增加像素以便放大原始图像的可变比例移动单元的图像处理装置包括用于平滑像素数据的平滑处理单元。 平滑处理单元通过增加的像素数确定单元来检测每个像素的增加的像素的数量，以便通过使用根据结果的结果选择的矩阵大小的平滑滤波器来平滑从可变比例倍数移动单元输出的图像数据 检测。 这导致了图像处理装置，其能够通过适当的平滑处理来防止图像质量的劣化，而不管放大中的可变比例放大倍数是否为整数。

公开(公告)号：US5257120A

公开(公告)日：1993-10-26

申请号：US453976

申请日：1989-12-20

申请人： Yoshihiko Hirota

发明人： Yoshihiko Hirota

IPC分类号： H04N1/387 ,  H04N1/40 ,  H04N1/36 ,  H04N1/393

CPC分类号： H04N1/3875

摘要： An image processing apparatus reading images by relatively moving linear CCDs in a subscanning direction on the original images includes a clock generation circuit for generating first and second clock signals having different pulse numbers per unit time, and first and second image memories alternately writing line by line the read image data, one of which carries out writing operation while the other carries out reading operation of the written image data. Writing address of the first and second image memory is designated by a first clock signal, and a reading address of the first and second image memory is designated by a second clock signal. When the image data is stored with low frequency clock signal and the image data are read in accordance with a high frequency clock signal, a reduced image can be formed.

摘要翻译： 通过在原始图像上沿副扫描方向相对运动的线性CCD来读取图像的图像处理装置包括：时钟产生电路，用于产生具有每单位时间不同脉冲数的第一和第二时钟信号;以及第一和第二图像存储器， 读取图像数据，其中一个执行写入操作，而另一个执行写入的图像数据的读取操作。 通过第一时钟信号指定第一和第二图像存储器的写入地址，并且通过第二时钟信号指定第一和第二图像存储器的读取地址。 当以低频时钟信号存储图像数据并且根据高频时钟信号读取图像数据时，可以形成缩小的图像。

公开(公告)号：US5130820A

公开(公告)日：1992-07-14

申请号：US483811

申请日：1990-02-23

申请人： Yoshihiko Hirota

发明人： Yoshihiko Hirota

IPC分类号： G06T5/20 ,  H04N1/409

CPC分类号： H04N1/4092 ,  G06T5/20

摘要： An image processing device for reading an original image by shifting in a sub-scanning direction image sensors provided in a main scanning direction to serially output image signals read, includes line memories for storing image signals by a plurality of lines in the sub-scanning direction, read for every line by the image sensors, an output device for outputting in parallel the image signals from the line memories, and an edge emphasizing device for carrying out edge emphasis in accordance with the image signals outputted by the output device in response to signals externally applied.

摘要翻译： 一种图像处理装置，用于通过在副扫描方向上移动图像传感器来读取原始图像，以沿串行输出读取的图像信号串行输出图像信号，包括用于通过副扫描方向上的多行存储图像信号的行存储器 ，由图像传感器读取每一行，用于并行输出来自行存储器的图像信号的输出装置，以及用于根据输出装置响应信号输出的图像信号执行边缘加重的边缘加重装置 外用。

公开(公告)号：US4945405A

公开(公告)日：1990-07-31

申请号：US197833

申请日：1988-05-23

申请人： Yoshihiko Hirota

发明人： Yoshihiko Hirota

IPC分类号： H04N1/401 ,  H04N1/60

CPC分类号： H04N1/6027 ,  H04N1/401

摘要： A color image read apparatus which makes efficient color balance correction and shading correction by a simple configuration in a manner that color balance correction of image signals of plural colors of a color image sensor using optoelectric transducers is made in A/D conversion on the basis of a reference voltage for each color, and shading correction thereof is made on the basis of one reference data obtained from image signals of plural colors of a reference white pattern read prior to an original.

摘要翻译： 一种彩色图像读取装置，其通过简单的配置以使用光电换能器的彩色图像传感器的多种颜色的图像信号的颜色平衡校正基于A / D转换进行A / D转换的方式进行有效的色彩平衡校正和阴影校正 基于从原件之前读取的参考白色图案的多种颜色的图像信号获得的一个参考数据进行每种颜色的参考电压及其阴影校正。

公开(公告)号：US4839719A

公开(公告)日：1989-06-13

申请号：US150382

申请日：1988-01-29

申请人： Yoshihiko Hirota ,  Masamichi Kishi

发明人： Yoshihiko Hirota ,  Masamichi Kishi

IPC分类号： H04N1/48 ,  H04N1/60

CPC分类号： H04N1/6016 ,  H04N1/486

摘要： A color image reading apparatus according to the present invention processes by shifting of a sensor element one by one, output signals from three sensor elements consisting of each one picture element of a one-dimensional image sensor sensing one of three primary colors respectively. The sensor elements read any image so that printing data can be increased apparently up to three times of the picture element density of the sensor. A circuit is provided for thinning out the printing data for assuring adaptability to various printers.

摘要翻译： 根据本发明的彩色图像读取装置通过逐个移动传感器元件来处理，分别从感测三原色之一的一维图像传感器的每个像素组成的三个传感器元件输出信号。 传感器元件读取任何图像，使得打印数据可以明显增加到传感器的图像元素密度的三倍。 提供了用于减薄打印数据以确保对各种打印机的适应性的电路。

公开(公告)号：US07268914B2

公开(公告)日：2007-09-11

申请号：US10154850

申请日：2002-05-28

申请人： Kazuyoshi Noguchi ,  Yoshihiko Hirota

发明人： Kazuyoshi Noguchi ,  Yoshihiko Hirota

IPC分类号： G06F15/00 ,  B41B1/00 ,  G03F3/08 ,  G06K15/00 ,  G09G5/00

CPC分类号： H04N1/6072

摘要： It is objected to provide an image processing apparatus achieving decrease of memory volume to be used, simplified print process, and enhancement of productivity. Firstly, a plurality of image data are recorded in memories provided for respective colors. Based on the image data or mode selection by a user, it is determined that whether a multi-color image or a monochrome image is to be outputted. Next, memories 302 of respective colors transmit image data of respective colors to a computing unit 304 in accordance with readout-timing signals from a timing selector 305. In case a multi-color image is to be outputted, the timing selector 305 transmits readout-timing signals of respective colors taking time difference length of which is predetermined for each color. In case a monochrome image is to be outputted, the timing selector 305 transmits readout-timing signals of respective color simultaneously. A computing unit 304 forms monochrome image data in accordance with image data of respective colors, whereby process of monochrome print is simplified.

摘要翻译： 反对提供一种图像处理装置，其实现了要使用的存储器容量的减小，简化的打印处理和生产率的提高。 首先，将多个图像数据记录在为各种颜色提供的存储器中。 基于用户的图像数据或模式选择，确定是否要输出多色图像或单色图像。 接下来，各颜色的存储器302根据来自定时选择器305的读出定时信号将各种颜色的图像数据传送到计算单元304。 在要输出多色图像的情况下，定时选择器305以每个颜色预定的时间差长度发送各种颜色的读出定时信号。 在要输出单色图像的情况下，定时选择器305同时发送各种颜色的读出定时信号。 计算单元304根据各种颜色的图像数据形成单色图像数据，从而简化了单色打印处理。

公开(公告)号：US07251055B2

公开(公告)日：2007-07-31

申请号：US09783323

申请日：2001-02-15

申请人： Kenichi Sawada ,  Junji Nishigaki ,  Fujio Hashimoto, legal representative ,  Nobue Hashimoto, legal representative ,  Kentaro Katori ,  Yoshihiko Hirota ,  Tomoji Tanaka

发明人： Keisuke Hashimoto, deceased

IPC分类号： G06F1/00

CPC分类号： H04N1/506 ,  G06K15/1247 ,  G06K2215/0094 ,  H04N1/047 ,  H04N1/12 ,  H04N2201/0471 ,  H04N2201/04717 ,  H04N2201/04732 ,  H04N2201/04787 ,  H04N2201/04793

摘要： An image forming apparatus using an exposure unit of a solid-scanning type such as an LED head, reads out linear distortion correction data of an LED unit, then, calculates an amount of correcting color deviation based on the read-out data, and after that, carries out address control for color deviation correction memory. Based on this control, the apparatus creates a reference resist patterns, calculates an amount of correcting the color deviation, and writes the calculated amount in the color deviation correction memory. After that, the apparatus reads out the linear distortion correction data, and adds the amount of correcting the color deviation that is determined by sensors, and the amount of the color correction based on the linear distortion correction data, thereby carries out address controls for the color deviation correction memory. This constitution allows correcting linear distortion of the exposure unit itself with ease and accuracy, and correcting positional deviation of the exposure unit occurring during product assembly and deviation in a linear arrangement of an LED head with accuracy.

摘要翻译： 使用诸如LED头的固体扫描类型的曝光单元的图像形成装置，读出LED单元的线性失真校正数据，然后基于读出的数据计算校正颜色偏差量，之后 执行色偏校正存储器的地址控制。 基于该控制，设备产生参考抗蚀剂图案，计算校正颜色偏差的量，并将计算的量写入颜色偏差校正存储器。 之后，该装置读出线性失真校正数据，并且添加校正由传感器确定的颜色偏差的量和基于线性失真校正数据的颜色校正量，由此执行针对 颜色偏差校正记忆。 该结构容易且精确地校正曝光单元本身的线性变形，并且校正在产品组装期间发生的曝光单元的位置偏差以及LED头的线性排列的偏差。

公开(公告)号：US06912068B1

公开(公告)日：2005-06-28

申请号：US09532304

申请日：2000-03-22

申请人： Yoshihiko Hirota ,  Keisuke Hashimoto

发明人： Yoshihiko Hirota ,  Keisuke Hashimoto

IPC分类号： H04N1/409 ,  G06T5/00 ,  H04N1/40 ,  H04N1/405

CPC分类号： H04N1/40087 ,  H04N1/4053

摘要： An image processor performs multilevel error diffusion processing and is provided with: a quantizing unit that quantizes pixel data constituting image information based on output values distributed at predetermined tone differences; an error detecting unit that detects a quantization error of the pixel data; a peripheral error calculating unit that integrates the quantization error of the pixel data detected by the error detecting unit with respect to a quantization error of peripheral pixel data; and an error superimposing unit that adds the integration error calculated by the peripheral error calculating unit to the pixel data input next. The image processor is further provided with: a random noise generating unit that generates random noise in accordance with the tone level of the input pixel data; and a noise superimposing unit that superimposes the random noise generated by the random noise generating unit on the pixel data.

摘要翻译： 图像处理器执行多级误差扩散处理，并具有：量化单元，其基于以预定色差分布的输出值量化构成图像信息的像素数据; 检测像素数据的量化误差的误差检测单元; 周边误差计算单元，其对由误差检测单元检测的像素数据的量化误差相对于周边像素数据的量化误差进行积分; 以及误差叠加单元，其将由所述周边误差计算单元计算出的积分误差与接下来输入的像素数据相加。 图像处理器还具有：随机噪声产生单元，其根据输入像素数据的色调电平产生随机噪声; 以及噪声叠加单元，其将由随机噪声生成单元生成的随机噪声叠加在像素数据上。