-
1.发明授权Image processor, image processing method, and program product storing proguram for controlling the image processor method 有权图像处理器，图像处理方法以及用于控制图像处理器方法的程序产品存储进程公开(公告)号：US06912068B1
公开(公告)日：2005-06-28
申请号：US09532304
申请日：2000-03-22
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。
-
公开(公告)号：US06978045B1
公开(公告)日：2005-12-20
申请号：US09408366
申请日：1999-09-29
CPC分类号： H04N1/4092 , G06K15/02 , G06K15/1844
摘要： In an image processor on multi-level image data, an edge direction of a target pixel is discriminated from differences in density level between the target pixel and adjacent pixels thereof. A pixel is divided into a plurality of sub-pixels, and the image is formed in the unit of sub-pixels. The density level is set for each of the sub-pixels in the target pixel in accordance with the discrimination on the edge direction of the target pixel so that the center of gravity in density is changed in the target level. Then a character edge portion is reproduced more smoothly.
摘要翻译： 在多级图像数据中的图像处理器中，目标像素的边缘方向与目标像素与其相邻像素之间的浓度级别的差异区分开。 像素被分成多个子像素，并且以子像素为单位形成图像。 根据对目标像素的边缘方向的鉴别，对目标像素中的每个子像素设定浓度级，使得浓度的重心在目标水平上变化。 然后更平滑地再现字符边缘部分。
-
公开(公告)号：US07046861B2
公开(公告)日：2006-05-16
申请号：US10637661
申请日：2003-08-11
CPC分类号： G06T5/006 , H04N1/047 , H04N1/1135 , H04N1/12 , H04N1/506 , H04N2201/03162 , H04N2201/0471 , H04N2201/04717 , H04N2201/04729 , H04N2201/04731 , H04N2201/04787 , H04N2201/04789 , H04N2201/04791 , H04N2201/04793
摘要： Image distortion is corrected in a color printer wherein print units for a plurality of colors are aligned to form a color image by superposing images formed by the print units. A quantity of image distortion is detected, and correction data of main scan address and subscan address are calculated and stored according to the detected image distortion for each main scan address. When input color image data are corrected, printing position is corrected in combination of address change with density interpolation. When the correction data exceeds the maximum correction range, the correction data are replaced by the maximum in the correction range for distortion correction. Further, in the image data correction, after the image data are converted to data having a smaller number of gradation levels, the data are delayed according to the serial arrangement of the print units. Then, the delayed data are converted again for printing.
摘要翻译： 在彩色打印机中校正图像失真，其中通过叠加由打印单元形成的图像来对准用于多种颜色的打印单元以形成彩色图像。 检测到一定数量的图像失真，根据检测到的每个主扫描地址的图像失真来计算并存储主扫描地址和副扫描地址的校正数据。 当输入彩色图像数据被校正时，打印位置与地址变化与密度插值的组合被校正。 当校正数据超过最大校正范围时，校正数据被替换为用于失真校正的校正范围中的最大值。 此外，在图像数据校正中，在将图像数据转换为具有较少灰度级数的数据之后，根据打印单元的串行排列来延迟数据。 然后，再次转换延迟数据进行打印。
-
公开(公告)号：US06625331B1
公开(公告)日：2003-09-23
申请号：US09346276
申请日：1999-07-01
IPC分类号： G06K932
CPC分类号： G06T5/006 , H04N1/047 , H04N1/1135 , H04N1/12 , H04N1/506 , H04N2201/03162 , H04N2201/0471 , H04N2201/04717 , H04N2201/04729 , H04N2201/04731 , H04N2201/04787 , H04N2201/04789 , H04N2201/04791 , H04N2201/04793
摘要： Image distortion is corrected in a color printer wherein print units for a plurality of colors are aligned to form a color image by superposing images formed by the print units. A quantity of image distortion is detected, and correction data of main scan address and subscan address are calculated and stored according to the detected image distortion for each main scan address. When input color image data are corrected, printing position is corrected in combination of address change with density interpolation. When the correction data exceeds the maximum correction range, the correction data are replaced by the maximum in the correction range to utilize the capability of the distortion correction of the printer. Further, in the image data correction, after the image data are converted to data having a smaller number of gradation levels, the data are delayed according to the serial arrangement of the print units. Then, the delayed data are converted again for printing.
摘要翻译： 在彩色打印机中校正图像失真，其中通过叠加由打印单元形成的图像来对准用于多种颜色的打印单元以形成彩色图像。 检测到一定数量的图像失真，根据检测到的每个主扫描地址的图像失真来计算并存储主扫描地址和副扫描地址的校正数据。 当输入彩色图像数据被校正时，打印位置与地址变化与密度插值的组合被校正。 当校正数据超过最大校正范围时，校正数据被替换为校正范围中的最大值，以利用打印机的失真校正的能力。 此外，在图像数据校正中，在将图像数据转换为具有较少灰度级数的数据之后，根据打印单元的串行排列来延迟数据。 然后，再次转换延迟数据进行打印。
-
公开(公告)号：US06323959B1
公开(公告)日：2001-11-27
申请号：US09270935
申请日：1999-03-16
IPC分类号： H04N146
CPC分类号： H04N1/482
摘要： An image processor receives color image data and converts them to image data of cyan, magenta, yellow and black necessary for image forming. The received color image data are subjected to color aberration correction, and various image data processing is performed on the image data after the color aberration correction in order to improve the precision of image processing on a color document image. The image data processing includes, for example, a specified color document is decided, automatic color selection and magnification change.
摘要翻译： 图像处理器接收彩色图像数据并将其转换为图像形成所需的青色，品红色，黄色和黑色的图像数据。 对所接收的彩色图像数据进行色差校正，并且对色像差校正之后的图像数据执行各种图像数据处理，以提高彩色文档图像上的图像处理的精度。 图像数据处理包括例如指定的颜色文档被确定，自动颜色选择和放大变化。
-
6.发明授权Image forming apparatus for distinguishing between types of color and monochromatic documents 失效用于区分颜色和单色文档的类型的图像形成装置
公开(公告)号：US6118895A
公开(公告)日：2000-09-12
申请号：US611473
申请日：1996-03-05
CPC分类号： H04N1/56
摘要： In a digital full color copying machine, image signals of red, green and blue are converted to a value signal, and histograms of the value signal for chromatic dots and achromatic dots respectively are generated. Then, a document type, such as a color standard document, a color photograph document, a color standard document having a colored background, a black-and-white standard document, or a black-and-white photograph document, is determined automatically based on the histograms. Background level of a copy is controlled automatically at an appropriate level both for a color document and for a black-and-white document having a white background according to the document type by gradation correction of the value signal. Thus, background processing is performed irrespective of a color document or a black-and-white document.
摘要翻译： 在数字全色复印机中，将红色，绿色和蓝色的图像信号转换为值信号，并且分别产生用于色点和消色差的值信号的直方图。 然后，基于自动地确定诸如彩色标准文档，彩色照片文档，具有彩色背景的彩色标准文档，黑白标准文档或黑白照片文档的文档类型 在直方图上。 对于彩色文档和根据文档类型的具有白色背景的黑白文档，通过值信号的灰度校正，自动控制副本的背景级别。 因此，与彩色文档或黑白文档无关地执行后台处理。
-
7.发明授权Image reproducing apparatus for forming either of a color image or a monochromatic image 失效用于形成彩色图像或单色图像的图像再现装置
公开(公告)号：US5973802A
公开(公告)日：1999-10-26
申请号：US611754
申请日：1996-03-06
CPC分类号： H04N1/48 , H04N1/40012
摘要： When a monochromatic image is reproduced, a user can select desired mixing coefficients of red, green and blue in order to control gradation data for the reproduction of a monochromatic image as well as a monochromatic reproduction color. When a document is automatically determined not to be a color document, the mixing coefficients of red, green and blue are changed according to the type of the document. If a monochromatic copy mode is selected, the mixing coefficients can be set manually. Preferably, in order to help a user to select mixing coefficients, a plurality of images of monochromatic colors of various mixing coefficients of red, green and blue can be printed on a single sheet of paper.
摘要翻译： 当再现单色图像时，用户可以选择期望的红色，绿色和蓝色的混合系数，以便控制用于再现单色图像以及单色再现颜色的灰度数据。 当文档被自动确定为不是彩色文档时，红色，绿色和蓝色的混合系数根据文档的类型而改变。 如果选择单色复印模式，则可以手动设置混合系数。 优选地，为了帮助用户选择混合系数，可以在单张纸上打印出各种红色，绿色和蓝色混合系数的单色的多个图像。
-
8.发明授权Image formation apparatus exposing photoconductor according to image density data to form image thereon 失效图像形成装置根据图像浓度数据曝光光电导体以在其上形成图像
公开(公告)号：US5949963A
公开(公告)日：1999-09-07
申请号：US814920
申请日：1997-03-12
CPC分类号： H04N1/40037 , B41J2/471 , H04N1/407
摘要： In a digital full color copying machine, one pixel on a photoconductor is divided into four subdivided small pixels. Functions a-d are assigned to each subdivided small pixel. Functions a-d are linear functions with density data as a parameter. The slope of functions a-d becomes smaller in sequential order. Exposure data of the four subdivided small pixels is calculated according to the density data of a pixel and functions a-d to expose each subdivided small pixel. A peak can be established in the exposure amount distribution to form a deeper latent image. Accordingly, resolution and graininess of the halftone area are improved.
摘要翻译： 在数字全彩色复印机中，光电导体上的一个像素被分成四个细分的小像素。 函数a-d被分配给每个细分的小像素。 函数a-d是密度数据作为参数的线性函数。 函数a-d的斜率按顺序变小。 根据像素的密度数据计算四个细分的小像素的曝光数据，并且对a-d进行功能，以暴露每个细分的小像素。 可以在曝光量分布中建立峰以形成更深的潜像。 因此，改善了半色调区域的分辨率和颗粒度。
-
公开(公告)号：US5867285A
公开(公告)日：1999-02-02
申请号：US819456
申请日：1997-03-17
申请人： Yoshihiko Hirota , Hiroyuki Suzuki
发明人： Yoshihiko Hirota , Hiroyuki Suzuki
CPC分类号： G06T5/20
摘要： In an image processing apparatus, a color image is read with pixels aligned along a direction to provide first color data on the color image. The first color data includes red, green and blue data at each pixel. A first operator calculates first chroma data according to the first color data. On the other hand, a phase shift device generates second color data by shifting a phase of red data and by shifting a phase of blue data in the first color data, and a second operator calculates second chroma data according to the second color data. A selector selects chroma data having a lower chroma, and a black edge of a character a the color image is discriminated according to the selected chroma data.
摘要翻译： 在图像处理装置中，利用沿着方向排列的像素来读取彩色图像，以在彩色图像上提供第一颜色数据。 第一颜色数据包括每个像素处的红色，绿色和蓝色数据。 第一操作者根据第一颜色数据计算第一色度数据。 另一方面，相移装置通过移位红色数据的相位并通过移动第一颜色数据中的蓝色数据的相位来生成第二颜色数据，并且第二运算符根据第二颜色数据计算第二色度数据。 选择器选择具有较低色度的色度数据，并且根据所选择的色度数据识别彩色图像的字符的黑色边缘。
-
10.发明授权Shading correction having a line memory read which generates an average reference level from a plurality of lines of a reference plate 失效具有行存储器读取的着色校正，其从参考板的多行生成平均参考水平
公开(公告)号：US5412489A
公开(公告)日：1995-05-02
申请号：US905109
申请日：1992-06-26
申请人： Yoshihiko Hirota
发明人： Yoshihiko Hirota
CPC分类号： H04N1/401
摘要： In an image reading apparatus, the standard data for the normalization of the image read data are obtained with use of a line memory of one line from the standard data of a plurality of lines. The white level data and the black level data are used for the normalization. The weight average of the input data of the standard data received successively one line by one converges gradually. The converged average is used for the correction of read data of an image, and the effect of image noises is reduced and the image read data is normalized at a high precision. In a continuous reading, only the white level may be updated for shortening the time for reading.
摘要翻译： 在图像读取装置中，利用来自多行的标准数据的一行的行存储器，获得用于归一化图像读取数据的标准数据。 白平面数据和黑电平数据用于标准化。 逐一收到的标准数据的输入数据的权重平均值逐渐收敛。 收敛平均值用于校正图像的读取数据，降低图像噪声的影响，并且以高精度对图像读取数据进行归一化。 在连续阅读中，只有白平衡可能会更新，以缩短阅读时间。
-
-
-
-
-
-
-
-
-
搜索结果
60 条记录 (耗时 0.049 秒)
