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    • 1. 发明申请
    • SYSTEMS AND METHODS FOR SELECTIVELY SCREENING IMAGE DATA
    • 选择性筛选图像数据的系统和方法
    • WO2017058349A1
    • 2017-04-06
    • PCT/US2016/044412
    • 2016-07-28
    • CSR IMAGING US, LP
    • ANDREE, Fred WilliamLEE, Sung-ChuEPSTEIN, Neil Brad
    • H04N1/405H04N1/409
    • H04N1/52H04N1/40062H04N1/4052H04N1/4055H04N1/4092H04N1/58H04N1/6005H04N2201/0094
    • Various embodiments are directed to methods, systems, and devices for improving the quality of image data for printing by a printer having relatively low resolution capabilities. Image data may be scanned, captured or otherwise received. The image data may be received in bands, chunks, blocks, portions, regions, or its entirety. An edge detector is subsequently employed to detect a location of edges in a region of the received image data. For image data pixels that are located in or close to a detected edge, a first screen is applied to modify these pixels to compensate for printing at or near the detected edge. Otherwise, a second image screen is applied to modify pixels for printing that are not close to a detected edge. The first screen may be an error diffusion screen or a threshold screen. The second screen may be a halftone screen.
    • 各种实施例涉及用于改善由具有相对低分辨率能力的打印机进行打印的图像数据的质量的方法,系统和装置。 图像数据可能被扫描,捕获或以其他方式接收。 图像数据可以在频带,块,块,部分,区域或其整体中被接收。 随后采用边缘检测器来检测接收到的图像数据的区域中的边缘的位置。 对于位于或接近检测到的边缘的图像数据像素,应用第一屏幕来修改这些像素以补偿在检测到的边缘处或附近的打印。 否则,应用第二图像屏幕来修改不接近检测到的边缘的用于打印的像素。 第一屏幕可以是错误扩散屏幕或阈值屏幕。 第二屏幕可以是半色调屏幕。
    • 5. 发明申请
    • FAST VECTOR ERROR DIFFUSION
    • 快速向量错误扩展
    • WO2014113487A1
    • 2014-07-24
    • PCT/US2014/011708
    • 2014-01-15
    • QUALCOMM INCORPORATED
    • ZENG, HuanzhaoLEE, Chong U.HONG, John H.
    • H04N1/52
    • H04N1/52H04N1/405
    • Subdividing a color space is described for vector error diffusion which includes obtaining color coordinates for each primary color in the color space, and comparing the color coordinates to a threshold value for each coordinate plane of the color space. In response to the comparing, each primary color is grouped into a quadrant of the color space, wherein each quadrant is defined by the threshold value for each coordinate plane. In other aspects, a mapping a color to a closet primary color is described in a color space that includes a display determining color coordinates of the color and identifying a matching quadrant of a plurality of quadrants dividing the color space, wherein the determined color coordinates fall within the matching quadrant. A representative display device searches for the closest primary color within the matching quadrant and maps the color to the closest primary color found.
    • 针对向量误差扩散描述了细分颜色空间,其包括获得颜色空间中的每个基色的颜色坐标,以及将颜色坐标与颜色空间的每个坐标平面的阈值进行比较。 响应于比较,每个基色被分组成颜色空间的象限,其中每个象限由每个坐标平面的阈值定义。 在其他方面,在颜色空间中描述了将颜色映射到衣柜原色的颜色空间,其包括确定颜色的颜色坐标的显示器,并且识别划分颜色空间的多个象限的匹配象限,其中所确定的颜色坐标下降 在匹配象限内。 代表性的显示设备搜索匹配象限内的最接近的原色,并将颜色映射到找到的最接近的原色。
    • 7. 发明申请
    • IMAGE PROCESSING APPARATUS, IMAGE PROCESSING METHOD, AND COMPUTER PROGRAM PRODUCT
    • 图像处理设备,图像处理方法和计算机程序产品
    • WO2010032859A1
    • 2010-03-25
    • PCT/JP2009/066471
    • 2009-09-14
    • RICOH COMPANY, LIMITEDYAMAGUCHI, ArataSAGAE, HiroakiKIMURA, TakashiYOSHIDA, Masakazu
    • YAMAGUCHI, ArataSAGAE, HiroakiKIMURA, TakashiYOSHIDA, Masakazu
    • H04N1/52H04N1/405H04N1/60
    • H04N1/52
    • An image processing apparatus quantizes multi-level image data of n colors, where n≥2, by performing an error diffusion processing. The image processing apparatus includes: a dot arrangement determining unit that determines either one of an essential dot count and an essential recording material amount when the multi-level image data of n colors is converted into multi-level image data of m colors, where n>m≥1, by the error diffusion processing; and a color arrangement determining unit that performs the error diffusion processing on each color component of the multi-level image data of n colors, calculates either one of a dot count and a recording material amount for each color component, and determines an arrangement of either one of the dot count and the recording material amount for each color component within a range of a corresponding one of the essential dot count and the essential recording material amount determined by the dot arrangement determining unit.
    • 图像处理装置通过进行误差扩散处理来量化n = 2的n种颜色的多级图像数据。 图像处理装置包括:点阵布置确定单元,当n个颜色的多级图像数据被转换成m个颜色的多级图像数据时,确定基本点数和基本记录材料量中的任一个,其中n > m = 1,通过误差扩散处理; 以及对n色的多级图像数据的各颜色成分进行误差扩散处理的色彩配置决定部,计算各颜色成分的点数和记录材料量的任一个,并且确定任一个 在由点排列确定单元确定的基本点数和必要记录材料量的相应一个的范围内的每个颜色分量的点数和记录材料量之一。
    • 10. 发明申请
    • MACRO-PIXEL IMAGE RENDERING APPARATUS AND ASSOCIATED METHODS
    • 宏像素图像渲染设备及相关方法
    • WO2005009028A3
    • 2006-09-28
    • PCT/CA0301085
    • 2003-07-18
    • PHOTOGRAM TECHNOLOGIESRICHER PAUL
    • RICHER PAUL
    • H04N1/52H04N1/58
    • G06F15/00H04N1/52
    • A macro-pixel used in an image rendering process for forming an image using a matrix of macro-pixels. The macro-pixel comprises a plurality of rectilinear parallel rows. All rows extend across the matrix in the same direction and each one of the rows is capable of at least partially adopting at least one of a color state and an off state. The on state includes the presence of color while the off state includes the absence of color. The on state comprises non-key and/or key colors. The non-key colors can be cyan, magenta, yellow, and/or any other color while the key color is normally black. The macro-pixel also includes columns formed by micro-pixels which may be turned on in a predetermined order. The predetermined order permits maximum distance between rows used for key colors and rows used for non-key colors.
    • 用于使用宏像素的矩阵形成图像的图像渲染处理中使用的宏像素。 宏像素包括多个直线平行行。 所有行在相同方向上跨越矩阵延伸,并且行中的每一行能够至少部分地采用彩色状态和关闭状态中的至少一种。 开状态包括颜色的存在,而关闭状态包括不存在颜色。 开状态包括非键和/或键颜色。 非键颜色可以是青色,品红色,黄色和/或任何其他颜色,而键颜色通常为黑色。 宏像素还包括可以以预定顺序打开的由微像素形成的列。 预定顺序允许用于键颜色的行和用于非键颜色的行之间的最大距离。