Color adjustment apparatus and method
    1.
    发明授权
    Color adjustment apparatus and method 有权
    颜色调整装置及方法

    公开(公告)号:US06744531B1

    公开(公告)日:2004-06-01

    申请号:US09221996

    申请日:1998-12-29

    IPC分类号: G06F1500

    CPC分类号: H04N1/6022

    摘要: An apparatus and method that provide consistent output across a plurality of different hard copy output devices which may be included in a system comprising an image data source and a hard copy output device. The image data source supplies image data to a printable image data adjusting apparatus. The image data supplied may be in a device-dependent color space or a device-independent color space. If the image data is in a device-dependent color space, the printable image data adjusting apparatus first converts the image data into device-independent image data and stores it in memory as target image data. If the image data is already device-independent image data, the image data are simply stored in the memory of the printable image data adjusting apparatus as target image data. The printable image data adjusting apparatus then uses the target image data to generate printable image data. The hard copy output device uses the printable image data to generate a hard copy image. The hard copy image is then passed within the optical field of a sensor that detects device-independent image data values of the hard copy image. The detected device-independent image data values are then compared against the target image data to generate color adjustment factors. The color adjustment factors are then used to produce a hard copy image having detected device-independent image data values that more closely represent the target image data. The apparatus and method may be implemented in real-time with or without human intervention.

    摘要翻译: 提供跨多个不同硬拷贝输出设备的一致输出的装置和方法,其可包括在包括图像数据源和硬拷贝输出设备的系统中。 图像数据源将图像数据提供给可打印图像数据调整装置。 所提供的图像数据可以在依赖于设备的色彩空间或与设备无关的色彩空间中。 如果图像数据处于依赖于设备的色彩空间中,则可打印图像数据调整装置首先将图像数据转换为与设备无关的图像数据,并将其存储在存储器中作为目标图像数据。 如果图像数据已经是与设备无关的图像数据,则将图像数据简单地存储在可打印图像数据调整装置的存储器中作为目标图像数据。 然后,可打印图像数据调整装置使用目标图像数据来生成可打印的图像数据。 硬拷贝输出设备使用可打印的图像数据来生成硬拷贝图像。 然后在检测硬拷贝图像的设备无关图像数据值的传感器的光学场内传递硬拷贝图像。 然后将检测到的与设备无关的图像数据值与目标图像数据进行比较以产生颜色调整因子。 然后使用颜色调节因子来产生具有更接近地表示目标图像数据的检测到的与设备无关的图像数据值的硬拷贝图像。 该装置和方法可以在有或没有人为干预的情况下实时地实现。

    On-line calibration system for a dynamically varying color marking device
    2.
    发明授权
    On-line calibration system for a dynamically varying color marking device 有权
    用于动态变化的彩色打标设备的在线校准系统

    公开(公告)号:US07307752B1

    公开(公告)日:2007-12-11

    申请号:US09566291

    申请日:2000-05-05

    IPC分类号: G06F15/00 H04N1/46 G03F3/08

    摘要: A color marking device including a control system for calibration of the device based upon dynamic color balance control of an output image. The system comprises a front end converter for converting an input signal representative of a target image comprising a preselected color into a device-dependent control signal in accordance with a device TRC, a color marking device for outputting an output image in response to the control signal, a sensor for measuring a parameter from the output image representative of a color of the output image, and, a point-wise controller for comparing the parameter with a corresponding parameter from the target image and constructing adjusted controlled points for the device TRC when the measured parameter and the corresponding parameter vary by a preselected value, a color balance controller for constructing an adjusted device TRC from the controlled points, whereby subsequently generated output images are output with the adjusted device TRC and, more accurately represent target input images.

    摘要翻译: 一种彩色标记装置,包括基于输出图像的动态色彩平衡控制来校准装置的控制系统。 该系统包括:前端转换器,用于根据设备TRC将表示包括预选颜色的目标图像的输入信号转换成依赖于设备的控制信号;响应于控制信号输出输出图像的颜色标记装置 ,用于从表示输出图像的颜色的输出图像中测量参数的传感器,以及用于将参数与来自目标图像的相应参数进行比较的逐点控制器,并且当所述设备TRC的调整的控制点在 测量参数和相应的参数由预选值变化,用于从受控点构建调整的设备TRC的色平衡控制器,由此随后生成的输出图像被调整的设备TRC输出,并且更精确地表示目标输入图像。

    Color gamut mapping for accurately mapping certain critical colors and corresponding transforming of nearby colors and enhancing global smoothness
    6.
    发明授权
    Color gamut mapping for accurately mapping certain critical colors and corresponding transforming of nearby colors and enhancing global smoothness 有权
    色域映射,用于准确地映射某些关键颜色和相应的附近颜色变换,增强全局平滑度

    公开(公告)号:US06625306B1

    公开(公告)日:2003-09-23

    申请号:US09455761

    申请日:1999-12-07

    IPC分类号: G06K900

    CPC分类号: H04N1/603 H04N1/6058

    摘要: A mapping system for converting an input signal value to an output value wherein certain outputs are predetermined to be critical. An engine for converting input values to output values is associated with an input value transforming system wherein certain input values corresponding to the critical output values are transformed prior to input to the engine for adjusting the input value so that the engine generates a particularly desired output. The transforming comprises selecting a set of basis functions for effecting a warping of input values near the input value corresponding to the critical output value. The basis functions determine the extent and gradient of input value adjustment for nearby values to the critical value. The basis functions are included within an objective function defining the purpose of the system and the functions are solved to generate the desired adjusted input value. The system has particular applicability to color gamut mapping in a print system wherein output color needs to be accurately printed and colors nearby the critical color can be generated with minimal image artifacts.

    摘要翻译: 一种映射系统,用于将输入信号值转换为预定为关键的某些输出的输出值。 用于将输入值转换为输出值的引擎与输入值转换系统相关联,其中对应于临界输出值的某些输入值在输入到引擎之前被变换以用于调整输入值,使得发动机产生特别期望的输出。 变换包括选择一组基函数,以实现与临界输出值对应的输入值附近的输入值的变形。 基础函数确定临近值附近值的输入值调整的范围和梯度。 基函数包括在定义系统目的的目标函数中,并且解决函数以产生期望的调整输入值。 该系统特别适用于打印系统中的色域映射,其中输出颜色需要被精确地打印,并且可以以最少的图像伪影来生成临界颜色附近的颜色。

    Identifying language attributes through probabilistic analysis
    10.
    发明授权
    Identifying language attributes through probabilistic analysis 有权
    通过概率分析识别语言属性

    公开(公告)号:US07386438B1

    公开(公告)日:2008-06-10

    申请号:US10634616

    申请日:2003-08-04

    IPC分类号: G06F17/20 G10L15/00

    CPC分类号: G06F17/275

    摘要: A system and method for identifying language attributes through probabilistic analysis is described. A set of language classes and a plurality of training documents are defined, Each language class identifies a language and a character set encoding. Occurrences of one or more document properties within each training document are evaluated. For each language class, a probability for the document properties set conditioned on the occurrence of the language class is calculated. Byte occurrences within each training document are evaluated. For each language class, a probability for the byte occurrences conditioned on the occurrence of the language class is calculated.

    摘要翻译: 描述了通过概率分析识别语言属性的系统和方法。 定义了一组语言类和多个培训文档。 每个语言类标识语言和字符集编码。 对每个训练文档中的一个或多个文档属性的出现进行评估。 对于每个语言类,计算基于语言类的发生的文档属性集合的概率。 对每个培训文档中的字节事件进行评估。 对于每个语言类,计算基于语言类的出现的字节出现的概率。