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1.发明授权Error diffusion method in a multi-level image recording apparatus utilizing adjacent-pixel characteristics 失效利用相邻像素特性的多级图像记录装置中的误差扩散方法
公开(公告)号：US5708514A
公开(公告)日：1998-01-13
申请号：US521323
申请日：1995-08-30
CPC分类号： H04N1/4056
摘要： An image recording apparatus according to the present invention is characterized by comprising first signal conversion section for converting a pixel density value of an current pixel of an input image signal into a first recording control signal for defining a recording amount, second signal conversion section for referring to an adjacent-pixel recording control signal for defining a recording amount of at least one adjacent pixel connected to the current pixel to convert the first recording control signal into a second recording control signal, being closest to the first recording control signal, for defining a recording amount at which pixel formation for the current pixel is stabilized, recording section for recording an image based on the second recording control signal, and error diffusion section for diffusing an error between the pixel density value and a recording density value of the second recording control signal to a pixel density value of each of non-processed pixels located around the current pixel.
摘要翻译： 根据本发明的图像记录装置的特征在于包括：第一信号转换部分，用于将输入图像信号的当前像素的像素密度值转换为用于定义记录量的第一记录控制信号;第二信号转换部分，用于参考 涉及用于定义连接到当前像素的至少一个相邻像素的记录量的相邻像素记录控制信号，以将第一记录控制信号转换为最接近第一记录控制信号的第二记录控制信号，用于定义 用于当前像素的像素形成的记录量稳定，用于基于第二记录控制信号记录图像的记录部分和用于扩散像素浓度值和第二记录控制的记录浓度值之间的误差的误差扩散部分 信号到每个非处理像素的像素密度值 围绕当前像素。
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公开(公告)号：US4926251A
公开(公告)日：1990-05-15
申请号：US178431
申请日：1988-04-06
CPC分类号： H04N1/19515 , H04N1/19505 , H04N1/40062 , H04N1/401 , H04N1/56 , H04N1/6025
摘要： A color copying machine has a scanning-type proximity linear image sensor unit for optically scanning an input image and producing an image read signal, and a color printer unit for producing a copy image corresponding to the input image at limited levels of printing density. An image type discrimination circuit receives the image read signal, and at least partially discriminates the type of image based on a pattern matching technique, thereby producing a discrimination signal for specifying the image type in a pixel region of a predetermined size of the input image. An adaptive signal processing circuit also receives the image read signal, and performs different image signal correction processing in accordance with the discriminated image type, thus producing a corrected image signal, which is supplied to a multi-value dithering processor. The multi-value dithering processing circuit performs multi-value dither processing of the corrected image signal, and produces a printer drive signal for defining a printing pixel pattern for each pixel of the input image.
摘要翻译： 彩色复印机具有用于光学扫描输入图像并产生图像读取信号的扫描型邻近线性图像传感器单元，以及彩色打印机单元，用于以有限的打印浓度水平产生与输入图像相对应的复印图像。 图像类型识别电路接收图像读取信号，并且至少部分地基于模式匹配技术来区分图像的类型，由此产生用于指定输入图像的预定大小的像素区域中的图像类型的判别信号。 自适应信号处理电路还接收图像读取信号，并根据鉴别图像类型执行不同的图像信号校正处理，从而产生被提供给多值抖动处理器的校正图像信号。 多值抖动处理电路执行校正图像信号的多值抖动处理，并且产生用于为输入图像的每个像素定义打印像素图案的打印机驱动信号。
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3.发明授权Image recorded product, image recording system, image reproducing system, and recording medium for use to superimpose-record/reproduce additional information 失效图像记录产品，图像记录系统，图像再现系统和用于叠加 - 记录/再现附加信息的记录介质
公开(公告)号：US06095566A
公开(公告)日：2000-08-01
申请号：US816309
申请日：1997-03-13
CPC分类号： B42D25/00 , B42D25/309 , Y10S428/913 , Y10S428/914 , Y10T428/24802
摘要： An image recording system superimposes, on an original image, an additional image which is same as at least any one of visible characters, symbols and numerals recorded on a recorded product and records the superimposed image on the recorded product as an image for certification. The additional image superimpose-recorded on the recorded product cannot visually be recognized and it is permitted to be visible when a universal optical filter is used.
摘要翻译： 图像记录系统在原始图像上叠加与记录的产品上记录的可见字符，符号和数字中的至少任一个相同的附加图像，并将叠加的图像记录在记录的产品上作为用于认证的图像。 叠加记录在记录的产品上的附加图像在视觉上不能识别，并且当使用通用滤光器时允许其可见。
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4.发明授权Image processing apparatus using pattern generating circuits to process a color image 失效使用图案生成电路处理彩色图像的图像处理装置
公开(公告)号：US5652626A
公开(公告)日：1997-07-29
申请号：US299970
申请日：1994-09-02
CPC分类号： H04N1/46 , G06T1/0028 , H04N1/32208 , H04N1/32309 , G06T2201/0051 , H04N2201/327 , H04N2201/3271 , H04N2201/3278
摘要： In the apparatus for processing a color image, a data signal representing another information differs from the color image is generated by a generating means. The another information is embedded into the color image by varying one of a color difference and a chroma of the color image in accordance with the data signal by an image processing means.
摘要翻译： 在用于处理彩色图像的装置中，由生成装置产生表示与彩色图像不同的另一种信息的数据信号。 通过图像处理装置根据数据信号改变彩色图像的色差和色度之一，将另一信息嵌入到彩色图像中。
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公开(公告)号：US5278641A
公开(公告)日：1994-01-11
申请号：US664726
申请日：1991-03-05
CPC分类号： H04N1/60
摘要： A color image processing system which reads or receives a color image and outputs corrected color image to a display or printer. The system estimates the brightness of the original image and executes correction on the basis of this estimation. The system uses histograms to determine correction.
摘要翻译： 一种彩色图像处理系统，其读取或接收彩色图像并将校正的彩色图像输出到显示器或打印机。 该系统估计原始图像的亮度，并且基于该估计执行校正。 系统使用直方图来确定校正。
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6.发明授权Image layout apparatus for performing pattern modification such as coloring of an original image 失效用于执行图案修改的图像布局装置，例如原始图像的着色
公开(公告)号：US5136401A
公开(公告)日：1992-08-04
申请号：US623534
申请日：1990-12-07
摘要： An image layout apparatus for recognizing a color frame selectively marked on an original image, and automatically laying out the original image includes a color frame discriminating circuit for discriminating an image signal corresponding to the color frame from an image signal corresponding to the original image, a to-be-laid-out image signal outputting circuit for extracting a specific image signal corresponding to a specific image defined by the color frame from the original image signal, and outputting the specific image signal as a to-be-laid-out image signal, and a layout processing circuit for performing predetermined layout processing such as coloring layout of the to-be-laid-out image signal in accordance with the color frame image signal.
摘要翻译： 用于识别选择性地标记在原始图像上的彩色框架并且自动布置原始图像的图像布置设备包括：颜色帧鉴别电路，用于从与原始图像相对应的图像信号中鉴别与彩色帧相对应的图像信号; 要被布局的图像信号输出电路，用于从原始图像信号中提取与由彩色帧定义的特定图像相对应的特定图像信号，并将该特定图像信号作为待布局的图像信号 以及布局处理电路，用于根据彩色帧图像信号执行诸如要布置的图像信号的着色布局之类的预定布局处理。
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公开(公告)号：US4745467A
公开(公告)日：1988-05-17
申请号：US923045
申请日：1986-10-24
CPC分类号： H04N1/6016 , H04N1/401
摘要： A color copier comprises a color line-image sensor, a matrix circuit, and a color conversion circuit. The color line-image sensor reads a color document, to output a plurality of fundamental color signals. The matrix circuit converts the fundamental color signals into a brightness signal and two color-difference signals. The color-conversion circuit converts the brightness and color difference signals into ink-amount control signals for controlling the amounts of color inks used in a color printer. In order to decrease the memory capacity of the color conversion circuit and faithfully reproduce dark colors, a nonlinear conversion circuit is provided at the preceding stage of the matrix circuit. The nonlinear conversion circuit is arranged to increase a change in level of an input signal in a low-level range, to an extent greater than that in a high-level range.
摘要翻译： 彩色复印机包括彩色线图像传感器，矩阵电路和颜色转换电路。 彩色线图像传感器读取彩色文档，输出多个基色信号。 矩阵电路将基色信号转换为亮度信号和两个色差信号。 颜色转换电路将亮度和色差信号转换成用于控制彩色打印机中使用的彩色墨水量的墨量控制信号。 为了降低颜色转换电路的存储容量并忠实地再现暗色，在矩阵电路的前一级提供非线性转换电路。 非线性转换电路被布置为将低电平范围中的输入信号的电平的变化增大到高于高电平范围内的输入信号的电平。
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8.发明授权Image recording apparatus for representing a halftone by use of a plurality of recorded dots 失效用于通过使用多个记录点表示半色调的图像记录装置
公开(公告)号：US5497180A
公开(公告)日：1996-03-05
申请号：US71000
申请日：1993-06-04
IPC分类号： B41J2/52 , B41J2/525 , H04N1/40 , H04N1/405 , H04N1/46 , H04N1/52 , H04N1/60 , H04N1/64 , H04N1/21
CPC分类号： H04N1/4052 , H04N1/52 , H04N1/644
摘要： An image recording apparatus comprises an unequal interval quatization circuit for quantizing at an unequal interval an input multilevel image signal to prevent at least one signal having a tone level at which a recording density is unstable from being outputted, a circuit for calculating a difference between an unequal-interval-quantized signal and the input image signal, a buffer memory for temporarily storing the difference, a multiplexer for multiplying a recorded signal with a weight coefficient, an adder for adding a resultant signal from the multiplier to the input image signal, and a printer for recording an image, using the quantized signal as a record signal.
摘要翻译： 一种图像记录装置，包括：不等间隔积分电路，用于以不等间隔量化输入多值图像信号，以防止至少一个具有记录密度不稳定的音调电平的信号被输出;电路，用于计算 不等间隔量化信号和输入图像信号，用于临时存储差的缓冲存储器，用于将记录信号与权重系数相乘的多路复用器，用于将来自乘法器的合成信号与输入图像信号相加的加法器，以及 用于记录图像的打印机，使用量化信号作为记录信号。
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公开(公告)号：US4803496A
公开(公告)日：1989-02-07
申请号：US879943
申请日：1986-06-30
CPC分类号： H04N1/6022 , H04N1/52
摘要： A method of recording a full color image, for use in a printer such as a thermal printer, by means of a plurality of color inks of such as yellow, cyan, and magenta, and a black ink which is to be printed in an area in which the color inks are superimposed. For black area compensation the black ink is printed in an area smaller than an area in which the color inks are superimposed and which is obtained through the Neugebauer equation.
摘要翻译： 一种用于在诸如黄色，青色和品红色的多种彩色油墨和打印在区域中的黑色墨水的打印机中，用于诸如热敏打印机的打印机的全色图像的方法 其中彩色墨水被叠加。 对于黑色区域补偿，黑色墨水被印刷在比彩色墨水叠加的区域小的区域中，并且通过Neugebauer方程获得。
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公开(公告)号：US4698669A
公开(公告)日：1987-10-06
申请号：US810556
申请日：1985-12-19
CPC分类号： H04N1/40056 , G03G15/011 , H04N1/60
摘要： There is presented a color picture reader, and a method for using the same, which enable one to obtain exact and stable color separated signals. By projecting standard light of a light source on a reference plate, there are set reference values of the color separated signals that correspond to the color of the reference plate. In actual measurement, the light source is controlled by comparing the color separated signals of the light from the light source that is reflected from the reference plate with the predetermined reference values so as to bring them to a coincidence.
摘要翻译： 提供了彩色图像读取器及其使用方法，其使得能够获得准确和稳定的分色色彩信号。 通过在参考板上投射光源的标准光，设定与参考板的颜色对应的颜色分离信号的参考值。 在实际测量中，通过将来自参考板反射的来自光源的光的颜色分离信号与预定参考值进行比较来控制光源，以使它们重合。
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