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    • 2. 发明授权
    • Image processing method and apparatus for binary-coding multivalue image
data
    • 用于二值化多值图像数据的图像处理方法和装置
    • US5825940A
    • 1998-10-20
    • US587657
    • 1996-01-17
    • Shigeo YamagataHiroshi Tanioka
    • Shigeo YamagataHiroshi Tanioka
    • H04N1/405G06K9/40G06K9/38
    • H04N1/4051H04N1/4053
    • An object of the present invention is to provide an image processing apparatus capable of, at high speed, forming a half tone image exhibiting excellent linearity and gradation expressing characteristics while requiring only a simple structure. The image processing apparatus including a mean density calculating circuit for calculating a mean density in a predetermined region, a random number generator for generating random number data, an adder for adding, at a ratio corresponding to a level of input multivalue image data, the mean density obtained by said mean density calculating circuit and the random number data supplied from the random number generator, and a comparator for binary-coding the multivalue image data in such a manner that a value obtained by said adder is used as a threshold. To prevent roughness appearing in a highlight region in a binary-coded output image and obtain a satisfactory half tone output image exhibiting excellent gradation expressing characteristics, the mean density calculating circuit has a changing unit for changing the mean density.
    • 本发明的目的是提供一种图像处理装置,能够高速地形成具有优异的线性度和灰度表现特性的半色调图像,同时仅需要简单的结构。 该图像处理装置包括用于计算预定区域中的平均浓度的平均浓度计算电路,用于产生随机数数据的随机数发生器,用于将与输入的多值图像数据的电平相对应的比率相加的加法器, 由所述平均密度计算电路获得的密度和从随机数发生器提供的随机数数据,以及用于对所述多值图像数据进行二进制编码的比较器,使得将由所述加法器获得的值用作阈值。 为了防止出现在二进制编码的输出图像中的高亮区域中的粗糙度并且获得表现出优异的灰度表现特性的令人满意的半色调输出图像,平均浓度计算电路具有用于改变平均浓度的改变单元。
    • 4. 发明授权
    • Image process apparatus, image process method and storage medium
    • 图像处理装置,图像处理方法和存储介质
    • US06661921B2
    • 2003-12-09
    • US09287312
    • 1999-04-07
    • Hiroshi Tanioka
    • Hiroshi Tanioka
    • G06K946
    • H04N1/40093G06K9/00H04N1/409H04N1/56
    • An image processing apparatus capable of performing high-quality image reproduction to even low-density and color characters in an original is provided. The character is recognized from an image, the character of the original is expanded into a dot font based on the recognition result, and the image is reproduced. Furthermore, the character density of the original is detected, a character style of the character used in the reproduction image is determined according to the detected character density, a size of the character used in the reproduction image is determined according to the detected character density, and density of the character used in the reproduction image is also determined according to the detected character density. Furthermore, a color of the character of the original is detected, and a color of the character used in the reproduction image is determined according to the detected character color.
    • 提供了能够对原稿中的均匀低密度和彩色字符进行高品质图像再现的图像处理装置。 从图像识别字符,基于识别结果将原稿的字符扩展为点字体,并且再现图像。 此外,检测原稿的字符密度,根据检测到的字符浓度确定再现图像中使用的字符的字符样式,根据检测到的字符密度来确定再现图像中使用的字符的大小, 并且再现图像中使用的字符的密度也根据检测到的字符密度来确定。 此外,检测原件的字符的颜色,并且根据检测到的字符颜色来确定在再现图像中使用的字符的颜色。
    • 6. 发明授权
    • Image processing method and apparatus thereof
    • 图像处理方法及其装置
    • US6067088A
    • 2000-05-23
    • US649470
    • 1996-05-17
    • Hiroshi TaniokaYoshinobu Umeda
    • Hiroshi TaniokaYoshinobu Umeda
    • G06T5/40G06T15/50G06T5/00
    • G06T15/506G06T5/009
    • An image processor which processes an image signal using a DSP (digital signal processor), wherein a shading correction process, a logarithmic transformation process, an edge emphasizing process, a density adjustment process and a binarization process of the like are performed utilizing the DSP and a look-up table outside the DSP. An image signal is input in an order of raster scanning, and each pixel data of the image signal is set to an input register of the DSP. Calculations necessary for shading correction are performed in parallel on the pixel data by a plurality of ALUs in the DSP, and a logarithmic transformation is performed on the calculation results utilizing the look-up table. Further, the logarithmically-transformed signal is input to the DSP and set to the input register for an edge emphasizing process which is performed by the plurality of ALUs. The result is again input to the look-up table for a density adjustment process and input to the DSP for binarization and subsequent output.
    • 使用DSP(数字信号处理器)处理图像信号的图像处理器,其中使用DSP和/或DSP来执行阴影校正处理,对数变换处理,边缘强调处理,密度调整处理和二值化处理等 DSP外的查表。 以光栅扫描的顺序输入图像信号,并且图像信号的每个像素数据被设置为DSP的输入寄存器。 通过DSP中的多个ALU对像素数据并行地进行阴影校正所需的计算,并且使用查找表对计算结果执行对数变换。 此外,将对数变换后的信号输入到DSP中,并设定为由多个ALU执行的边缘强调处理的输入寄存器。 结果再次输入到查找表中进行密度调整处理,并输入到DSP进行二值化和后续输出。
    • 9. 发明授权
    • Image input device
    • 图像输入设备
    • US4724490A
    • 1988-02-09
    • US56362
    • 1987-05-28
    • Hiroshi Tanioka
    • Hiroshi Tanioka
    • H01L27/146H01L31/167H04N1/031H04N1/207H04N1/10H04N1/04H04N1/23
    • H01L31/167H01L27/14643H04N1/031H04N1/207
    • An image input device having an original exposing portion and an image sensor portion disposed and an image sensor portion disposed on a common insulating substrate. The original exposing portion is formed by one or more light-emitting elements. The image sensor portion is formed by one or more light-receiving elements individually corresponding to the light-emitting elements and receiving the lights of the light-emitting elements after the exposure of an original and putting out electrical signal levels in accordance with the quantities of received light. This invention further provides an image output and input device which includes in addition to said original exposing portion and said image sensor portion, a thermal head portion formed by one or more heat-generating resistance members which receives the electrical signals from the light-receiving element and generates heat.
    • 一种具有原始曝光部分和设置有图像传感器部分的图像输入装置和设置在公共绝缘基板上的图像传感器部分。 原始曝光部分由一个或多个发光元件形成。 图像传感器部分由单个对应于发光元件的一个或多个光接收元件形成,并且在原稿曝光之后接收发光元件的光,并根据其数量排出电信号电平 收到光。 本发明还提供一种图像输出和输入装置,除了所述原始曝光部分和所述图像传感器部分之外,还包括由一个或多个发热电阻部件形成的热敏头部分,其接收来自光接收元件的电信号 并发热。