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    • 2. 发明申请
    • HIERARCHICAL MULTIDIMENSIONAL LOOKUP TABLE GENERATION
    • 分层多元查找表生成
    • US20110305389A1
    • 2011-12-15
    • US12815823
    • 2010-06-15
    • Martin S. MaltzRaja BalaLalit Keshav Mestha
    • Martin S. MaltzRaja BalaLalit Keshav Mestha
    • G06K9/00
    • G06K9/00G06T11/001
    • What is disclosed is a novel system and method for generating a hierarchical LUT for implementing a color transformation within a color imaging system. In one embodiment, a coarse LUT is received which comprises a plurality of sub-cubes arrayed on a plurality of coarse levels on a structured coarse grid. Each of the sub-cubes encompasses at least one coarse LUT node. Sub-cubes in the coarse grid are identified that are bisected by a boundary surface of the gamut. Then, each of the identified coarse LUT sub-cubes are associated with fine LUT which comprises a plurality of fine LUT nodes arrayed on a plurality of fine levels on a structured fine grid. A hierarchical LUT is generated from the coarse LUT and the associated fine LUTs. Thereafter, the hierarchical LUT can be used for color transformation within a color imaging system.
    • 公开的是用于生成用于实现彩色成像系统内的颜色变换的分层LUT的新型系统和方法。 在一个实施例中,接收粗略LUT,其包括排列在结构化粗网格上的多个粗略级上的多个子立方体。 每个子立方体包含至少一个粗略LUT节点。 识别粗网格中的子立方体,其被色域的边界面平分。 然后,识别的粗略LUT子立方体中的每一个都与精细LUT相关联,该精细LUT包括排列在结构化细网格上的多个精细级上的多个精细LUT节点。 从粗略LUT和相关联的精细LUT生成分层LUT。 此后,分层LUT可以用于彩色成像系统内的颜色变换。
    • 5. 发明授权
    • Hierarchical multidimensional lookup table generation
    • 分层多维查找表生成
    • US08526727B2
    • 2013-09-03
    • US12815823
    • 2010-06-15
    • Martin S. MaltzRaja BalaLalit Keshav Mestha
    • Martin S. MaltzRaja BalaLalit Keshav Mestha
    • G06K9/00G06K9/36G06K1/00G06F15/00H04N1/60G03F3/08G09G5/02
    • G06K9/00G06T11/001
    • A system and method for generating a hierarchical LUT for implementing a color transformation within a color imaging system. In one embodiment, a coarse LUT is received which comprises a plurality of sub-cubes arrayed on a plurality of coarse levels on a structured coarse grid. Each of the sub-cubes encompasses at least one coarse LUT node. Sub-cubes in the coarse grid are identified that are bisected by a boundary surface of the gamut. Then, each of the identified coarse LUT sub-cubes are associated with fine LUT which comprises a plurality of fine LUT nodes arrayed on a plurality of fine levels on a structured fine grid. A hierarchical LUT is generated from the coarse LUT and the associated fine LUTs. Thereafter, the hierarchical LUT can be used for color transformation within a color imaging system.
    • 一种用于生成用于在彩色成像系统内实现颜色变换的分层LUT的系统和方法。 在一个实施例中,接收粗略LUT,其包括排列在结构化粗网格上的多个粗略级上的多个子立方体。 每个子立方体包含至少一个粗略LUT节点。 识别粗网格中的子立方体,其被色域的边界面平分。 然后,识别的粗略LUT子立方体中的每一个都与精细LUT相关联,该精细LUT包括排列在结构化细网格上的多个精细级上的多个精细LUT节点。 从粗略LUT和相关联的精细LUT生成分层LUT。 此后,分层LUT可以用于彩色成像系统内的颜色变换。
    • 6. 发明授权
    • Updating a fleet CMYK to engine cmyk LUT in a color management strategy
    • 在颜色管理策略中更新CMYK到引擎cmyk LUT
    • US08610959B2
    • 2013-12-17
    • US13029753
    • 2011-02-17
    • Yao Rong WangLalit Keshav MesthaMartin S. Maltz
    • Yao Rong WangLalit Keshav MesthaMartin S. Maltz
    • H04N1/40
    • H04N1/6016H04N1/40006
    • What is disclosed is a system and method which addresses the problem of inheriting color management intent from a fleet color management LUT into a 4-to-4 cascaded LUT. The LUT is updated starting with a set of patches that either form a uniform or non-uniform grid of the LUT or can be projected to a uniform or non-uniform grid in the CMYK space using, e.g., PCA. A set of L*a*b* target as well a variable that serve the purpose of preserving the GCR and other elements of the fleet profile is obtained by passing the set of CMYK values to the fleet printer model. By iterating on the printer (or the printer model of the engine at the moment of the engine change) and converging to the targets, the engine device cmyk set is obtained. The LUT is formed between the uniform or non-uniform gridded CMYK and the device cmyk.
    • 公开的是一种系统和方法,其解决将车队颜色管理LUT的颜色管理意图从继承到4对4级联LUT的问题。 LUT以从LUT的统一或非均匀网格形成的一组补丁开始更新,或者使用例如PCA将其投影到CMYK空间中的均匀或非均匀网格。 通过将一组CMYK值传递给车队打印机模型,获得一组L * a * b *目标以及用于保存GCR和船队简档的其他元素的变量。 通过在打印机(或发动机更换时刻的发动机的打印机型号)上迭代并收敛到目标,获得发动机装置cmyk组。 LUT在均匀或不均匀的网格CMYK和设备cmyk之间形成。