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    • 2. 发明授权
    • Image processing device
    • 图像处理装置
    • US6122406A
    • 2000-09-19
    • US35263
    • 1998-03-05
    • Hiromi Okubo
    • Hiromi Okubo
    • B41J2/52G06T5/00G06T5/20H04N1/04H04N1/393H04N1/401H04N1/407H04N1/409
    • G06T5/20G06T5/001G06T2207/10008G06T2207/20012G06T2207/30176
    • An image processing device of the present invention includes a photoelectric transducing section for transforming input image information to an electric signal. An analog-to-digital converter converts the electric signal to a digital signal. An image processing section for processing the digital signal has a shading correcting section, a filtering section, a magnification changing section, a gamma correcting section, and a tonality processing section. The filtering section is capable of selecting a particular filter intensity for each of two perpendicular directions in accordance with a desired magnification change ratio. The device is capable of varying an MTF (Modulation Transfer Function) characteristic in the subscanning direction in accordance with a magnification change ratio with simple hardware.
    • 本发明的图像处理装置包括用于将输入图像信息变换为电信号的光电转换部。 模拟 - 数字转换器将电信号转换为数字信号。 用于处理数字信号的图像处理部分具有阴影校正部分,滤波部分,放大倍率改变部分,伽马校正部分和音调处理部分。 滤波部分能够根据期望的倍率变化率来选择两个垂直方向中的每一个的特定滤波器强度。 该装置能够根据简单硬件的倍率变化率来改变副扫描方向上的MTF(调制传递函数)特性。
    • 4. 发明授权
    • Method, system, and apparatus for image forming and processing capable of appropriately adjusting input and output properties
    • 用于图像形成和处理的方法,系统和装置,其能够适当地调整输入和输出特性
    • US07088472B1
    • 2006-08-08
    • US09473647
    • 1999-12-28
    • Hiromi OkuboHiroyuki ShibakiHiroshi IshiiHiroki KubozonoShougu Oneda
    • Hiromi OkuboHiroyuki ShibakiHiroshi IshiiHiroki KubozonoShougu Oneda
    • H04N1/40
    • H04N1/603
    • A novel image forming system which includes an image input apparatus, an image processing apparatus, and an image output apparatus. The image input apparatus has an input property profile, reads an image, and converts the image into image data using the input property profile. The image processing apparatus executes an image processing operation relative to the image data. The image output apparatus has an output property profile, outputs an image using the output property profile in accordance with the image data processed through the image processing operation. The above-mentioned image processing apparatus includes a property recognizer, a memory, and a property calculator. The property recognizer reads and recognizes the input property profile and the output property profile. The memory prestores a reference property profile. The property calculator calculates an optimal property based on the input property profile, the output property profile, and the reference property profile so that the image processing operation is optimally executed with the optimal property.
    • 一种新颖的图像形成系统,包括图像输入装置,图像处理装置和图像输出装置。 图像输入装置具有输入特性轮廓,读取图像,并且使用输入属性轮廓将图像转换成图像数据。 图像处理装置执行相对于图像数据的图像处理操作。 图像输出装置具有输出特性曲线,根据通过图像处理操作处理的图像数据,使用输出特性曲线输出图像。 上述图像处理装置包括属性识别器,存储器和属性计算器。 属性识别器读取并识别输入属性配置文件和输出属性配置文件。 内存预存参考属性配置文件。 属性计算器基于输入属性配置文件,输出属性配置文件和参考属性配置文件计算最佳属性,以便以最佳属性最佳地执行图像处理操作。
    • 5. 发明授权
    • Image processing apparatus in which filtering is selected for input
image characteristics
    • 对输入图像特性选择滤波的图像处理装置
    • US5392137A
    • 1995-02-21
    • US53205
    • 1993-04-28
    • Hiromi Okubo
    • Hiromi Okubo
    • G06K9/20G06K9/36G06T5/20H04N1/40H04N1/409
    • H04N1/4092
    • An image processing apparatus includes a reading part for optically reading an input image signal from an original document, a first filtering part for outputting a first image signal by processing the input image signal through an edge sharpening filter, a second filtering part for outputting a second image signal by processing the input image signal through a smoothing filter, a detecting part for detecting an edge quantity of the input image signal, a correcting part for outputting a first edge quantity by correcting the edge quantity, a mixing part for mixing two image signals from among the input image signal, the first image signal, and the second image signal in accordance with a mixing factor so that an image signal obtained by the mixing is output to a recording unit, and a mixing control part for determining the mixing factor in response to the first edge quantity output from the correcting part, and for supplying the mixing factor to the mixing part.
    • 一种图像处理装置,包括用于从原始文档光学读取输入图像信号的读取部分,用于通过边缘锐化滤波器处理输入图像信号来输出第一图像信号的第一滤波部分,用于输出第二滤波部分的第二滤波部分 通过平滑滤波器处理输入图像信号的图像信号,用于检测输入图像信号的边缘量的检测部分,通过校正边缘量来输出第一边缘量的校正部分;混合部分,用于混合两个图像信号 根据混合因子从所述输入图像信号,所述第一图像信号和所述第二图像信号中输入图像信号,使得通过所述混合获得的图像信号被输出到记录单元,以及混合控制部分,用于确定混合因子 响应于从校正部分输出的第一边缘量,并且用于将混合因子提供给混合部分。
    • 6. 发明授权
    • Apparatus and method for forming an image by processing input image data while suppressing banding and dropout
    • 用于通过处理输入图像数据同时抑制条带和丢失来形成图像的装置和方法
    • US06731817B2
    • 2004-05-04
    • US09775601
    • 2001-02-05
    • Hiroyuki ShibakiHiromi Okubo
    • Hiroyuki ShibakiHiromi Okubo
    • G06K938
    • H04N1/40087G06T9/00
    • An apparatus and method to convert input image data having a first multivalue to image data having a second multivalue which is less than the first multivalue by using a multi error diffusion technique. An image processing apparatus includes a threshold generating device for generating a plurality of variable thresholds at least based on a characteristic of a target pixel data, wherein a number of the variable thresholds is less than a number of the second multivalue by one. A quantization device is provided to quantize the input image data of the target pixel into the image data having the second multivalue based on the variable thresholds. The variable thresholds are varied in a manner such that predetermined quantized data quantized by the quantization device does not create noticeable banding substantially in a middle density range and does not create noticeable dropout substantially in a high density range.
    • 一种通过使用多误差扩散技术将具有第一多值的输入图像数据转换成具有小于第一多值的第二多值的图像数据的装置和方法。 图像处理装置包括至少基于目标像素数据的特性生成多个可变阈值的阈值生成装置,其中,所述可变阈值的数量少于所述第二多值的数量。 提供量化装置,用于基于可变阈值将目标像素的输入图像数据量化为具有第二多值的图像数据。 可变阈值以使得由量化装置量化的预定量化数据基本上不产生明显的中密度范围的条带并且不会在基本上在高密度范围内产生明显的丢失的方式变化。