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    • 4. 发明授权
    • Method of and apparatus for color conversion data
    • 颜色转换数据的方法和装置
    • US06396595B1
    • 2002-05-28
    • US09115510
    • 1998-07-15
    • Osamu Shimazaki
    • Osamu Shimazaki
    • B44C116
    • H04N1/6097H04N1/6033
    • Three-dimensional color conversion characteristics j=Rj(C, M, Y)(j=C′, M′, Y′) and one-dimensional color conversion characteristics Rk(K1) are determined to equalize calorimetric values of a test chart T1 of color image data C, M, Y, f using a K plate function f(C, M, Y) with calorimetric values of a test chart T2 of color image data C, M, Y, K produced by a color output apparatus. Using these determined color conversion characteristics, color image data C, M, Y, K are converted into color image data C′, M′, Y′, K′.
    • 确定三维颜色转换特性j = Rj(C,M,Y)(j = C',M',Y')和一维颜色转换特性Rk(K1)以使测试图T1的量热值 使用具有由彩色输出装置产生的彩色图像数据C,M,Y,K的测试图T2的测量值的K板函数f(C,M,Y)的彩色图像数据C,M,Y,f。 使用这些确定的颜色转换特性,将彩色图像数据C,M,Y,K转换为彩色图像数据C',M',Y',K'。
    • 5. 发明授权
    • Color conversion adjustment method
    • 颜色转换调整方式
    • US06204873B1
    • 2001-03-20
    • US09078905
    • 1998-05-14
    • Osamu Shimazaki
    • Osamu Shimazaki
    • B41J232
    • H04N1/60B41J2/36H04N1/6033
    • A color conversion adjustment method is provided which enables correct judgment on a fine gray balance. In a process of adjusting or confirming gray correction conversion for correcting a gray balance, a plurality of color patches, whose gray balances are varied discretely, are lined up, and a gray correction chart, whose background portion other than the color patches is outputted at a black color of a predetermined density, is outputted. The black color of the background portion is a standard for judging the color balance. Because the color patches and the black color are printed on the same paper, there is no deterioration in the gray balance due to differences in papers, and accordingly, fine gray balance can be judged more accurately.
    • 提供了能够对灰度均衡进行正确判断的颜色转换调整方法。 在调整或确认用于校正灰度平衡的灰度校正转换的过程中,排列了灰色平衡变化的多个色块,并且将其色彩以外的背景部分输出的灰度校正图 输出预定浓度的黑色。 背景部分的黑色是判断色彩平衡的标准。 由于色差和黑色印刷在同一张纸上,所以由于纸张的差异,灰度平衡没有变差,因此可以更准确地判断细灰度平衡。
    • 8. 发明授权
    • Image data producing apparatus and image data producing program storage medium
    • 图像数据产生装置和图像数据产生程序存储介质
    • US07239421B2
    • 2007-07-03
    • US09793121
    • 2001-02-27
    • Osamu Shimazaki
    • Osamu Shimazaki
    • H04N1/405
    • H04N1/4058B41F7/18H04N1/00278
    • In an image data producing apparatus for producing proofing halftone dots image data representative of a proof image in which an image obtained by a printing system is simulated, the image data producing apparatus has: a halftone dots pattern data storage section for storing a plurality of sorts of halftone dots pattern data representative of a plurality of sorts of halftone dots patterns; an image data obtaining section for obtaining the multi-tone level image data; a halftone dots pattern selecting section for selecting a single halftone dots pattern according to an operation from among the plurality of sorts of halftone dots patterns represented by the plurality of sorts of halftone dots pattern data stored in said halftone dots pattern data storage section; a halftone dots image data producing section for producing the proofing halftone dots image data by means of subjecting the multi-tone level image data obtained by said image data obtaining section to the halftone dots processing based on the halftone dots pattern data representative of the halftone dots pattern selected by said halftone dots pattern selecting section; and an image data output section for outputting the proofing halftone dots image data produced by said halftone dots image data producing section.
    • 在图像数据产生装置中,用于产生表示由打印系统获得的图像模拟的证明图像的校样半色调点图像数据,图像数据产生装置具有:半色调点阵图形数据存储部分,用于存储多种 表示多种半色调点图案的半色调点图案数据; 图像数据获取部分,用于获得多色调级图像数据; 半色调点图形选择部分,用于根据存储在所述半色调点阵图形数据存储部分中存储的多种半色调点图形数据所表示的多种半色调点图案中的操作来选择单个半色调点图案; 半色调点图像数据产生部分,用于通过基于表示半色调点的半色调点图案数据,通过使由所述图像数据获取部分获得的多色调电平图像数据进行半色调点处理来产生校样半色调点图像数据 图案由所述半色调点图案选择部选择; 以及图像数据输出部分,用于输出由所述半色调点图像数据产生部分产生的校样半色调点图像数据。
    • 10. 发明授权
    • Method of and apparatus for binarizing image signals
    • 二值化图像信号的方法和装置
    • US5696846A
    • 1997-12-09
    • US432967
    • 1995-05-01
    • Osamu Shimazaki
    • Osamu Shimazaki
    • G06K9/38G06T5/00H04N1/403H04N1/405G06K9/40H04N1/40
    • H04N1/4052G06K9/38
    • A multi-valued image signal I(x,y) is compared with a threshold signal TH by a comparator to produce a binary image signal P(x,y), and an error signal E(x,y) is determined from the binary image signal P(x,y) and the multi-valued image signal I(x,y). Error diffusion coefficients W1(k,l), W2(k,l), W3(k,l) are prepared in advance which correspond respectively to the filter characteristics of a "Jarvis-type filter", an "elongate rectangular filter", and a "Floyd-type filter". A mixing ratio setting circuit determines mixing ratios t1(I.sub.0), t2(I.sub.0), t3(I.sub.0) depending on the multi-valued image signal I(x,y). The mixing ratios t1(I.sub.0), t2(I.sub.0), t3(I.sub.0) are accumulated and added to the error diffusion coefficients W1(k,l), W2(k,l), W3(k,l), and an error signal E(x-k,y-l) and an error diffusion coefficient W(k,l,I.sub.0) are accumulated and added, producing a diffusion error signal .DELTA.E(x,y). The diffusion error signal .DELTA.E(x,y) is added to the multi-valued image signal I.sub.0 (x,y), producing a corrected multi-valued image signal I(x,y), which is then compared with the threshold signal TH by the comparator to generate a binary image signal P(x,y).
    • 通过比较器将多值图像信号I(x,y)与阈值信号TH进行比较,以产生二进制图像信号P(x,y),并从二进制数确定误差信号E(x,y) 图像信号P(x,y)和多值图像信号I(x,y)。 预先准备误差扩散系数W1(k,l),W2(k,l),W3(k,l),分别对应于“Jarvis型滤波器”,“细长矩形滤波器” 和“Floyd型过滤器”。 混合比设定电路根据多值图像信号I(x,y)确定混合比t1(I0),t2(I0),t3(I0)。 混合比t1(I0),t2(I0),t3(I0)被累积并加到误差扩散系数W1(k,l),W2(k,l),W3(k,l) 信号E(xk,yl)和误差扩散系数W(k,l,I0)被积累和相加,产生扩散误差信号DELTA E(x,y)。 扩散误差信号DELTA E(x,y)被添加到多值图像信号I0(x,y),产生校正的多值图像信号I(x,y),然后将其与阈值信号 TH由比较器产生二进制图像信号P(x,y)。