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    • 66. 发明授权
    • Apparatus and method for processing image which adds identification
information to be easily decipherable in high resolution image
    • 用于处理图像的装置和方法,其添加识别信息以在高分辨率图像中容易地解密
    • US6002841A
    • 1999-12-14
    • US879137
    • 1997-06-19
    • Hiroshi Tanioka
    • Hiroshi Tanioka
    • G06K15/02H04N1/00H04N1/32G06K9/36H04N1/387H04N1/50
    • H04N1/00867G06K15/02H04N1/0087H04N1/32133H04N2201/3205H04N2201/3269H04N2201/3271
    • An image processing method and an apparatus using the method enable information to be added particularly to a two-valued image having a high resolution so that the information can be read reliably. In a counter section of the apparatus, clock pulses with respect to the main scanning direction and clock pulses with respect to the sub scanning direction are counted as an 8-bit yellow component density image signal is input, and a determination is made as to whether the position at which mark M is to be added has been reached and as to whether, if the addition position is reached, the present position is a position at which a modulation amount .alpha.(=255) is to be added to the image signal or a position at which a modulation amount .beta. is to be subtracted from the image signal. The result of this determination is output to a selecting device. The selecting device is supplied with the input Y component density image signal and two signals obtained by modulating this signal with the modulation amounts .alpha. and .beta. and outputs one of the three input signals according to the determination result.
    • 一种图像处理方法和使用该方法使能信息的装置特别地添加到具有高分辨率的二值图像,使得可以可靠地读取信息。 在装置的计数器部分中,相对于主扫描方向的时钟脉冲和相对于副扫描方向的时钟脉冲被计数为输入8位黄色分量密度图像信号,并且确定是否 已经到达要添加标记M的位置,以及如果达到相加位置,当前位置是否是将调制量α(= 255)添加到图像信号的位置或 从图像信号中减去调制量β的位置。 该确定的结果被输出到选择装置。 为选择装置提供输入的Y分量密度图像信号和通过调制量α和β调制该信号获得的两个信号,并根据确定结果输出三个输入信号之一。
    • 67. 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。
    • 69. 发明授权
    • Image processing apparatus with pixel tone discrimination
    • 具有像素色差鉴别的图像处理装置
    • US5301039A
    • 1994-04-05
    • US73982
    • 1993-06-08
    • Hiroshi Tanioka
    • Hiroshi Tanioka
    • G06T5/20H04N1/40H04N1/403G06F15/68
    • H04N1/403G06T5/20H04N1/40062
    • An image processing apparatus has elements for inputting pixel data and for processing the input pixel data. The processing element includes a device for quantizing the input pixel data to produce binary data, and a memory device for receiving the binary data as an address to produce an output indicating image tone of the input pixel data. Preferably, the memory receives as one address a plurality of binary data, corresponding to a plurality of input pixel data. A delay element can be included to enable the memory to receive the plurality of binary data at a single time. In particular, the pixel data tonality can be discriminated by using one or more high-order bits of input multi-bit pixel data.
    • 图像处理装置具有用于输入像素数据和处理输入像素数据的元件。 处理元件包括用于量化输入像素数据以产生二进制数据的设备,以及用于接收二进制数据作为地址以产生指示输入像素数据的图像色调的输出的存储器件。 优选地,存储器接收对应于多个输入像素数据的多个二进制数据作为一个地址。 可以包括延迟元件以使存储器能够在单个时间接收多个二进制数据。 具体地,可以通过使用输入多位像素数据的一个或多个高位来鉴别像素数据色调。
    • 70. 发明授权
    • Image processing apparatus
    • 图像处理装置
    • US5177795A
    • 1993-01-05
    • US758211
    • 1991-09-12
    • Hiroshi TaniokaYoshitaka Ogino
    • Hiroshi TaniokaYoshitaka Ogino
    • H04N1/40H04N1/405
    • H04N1/40062H04N1/4055
    • An image processing apparatus has a pixel data input unit, and a processing unit for processing pixel data input from the input unit. The processing unit has a discriminating unit for discriminating an image type of the input pixel data. The discriminating unit has a first discriminator for discriminating the image type of a pixel of interest in a first mode using data of the pixel of interest and pixel data adjacent to the pixel of interest, and a second discriminator for discriminating the image type of the pixel of interest in a second mode different from the first mode. The unit discriminates the image type of the pixel of interest using the discrimination results of the first and second discriminators.
    • 图像处理装置具有像素数据输入单元,以及用于处理从输入单元输入的像素数据的处理单元。 处理单元具有用于识别输入像素数据的图像类型的鉴别单元。 鉴别单元具有第一鉴别器,用于使用感兴趣像素的数据和与感兴趣像素相邻的像素数据的数据来识别第一模式中的感兴趣像素的图像类型;以及第二鉴别器,用于鉴别像素的图像类型 在与第一模式不同的第二模式中感兴趣。 该单元使用第一和第二鉴别器的鉴别结果来辨别感兴趣像素的图像类型。