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    • 1. 发明授权
    • Resolution enhancement procedure and apparatus for a color laser printer
    • 彩色激光打印机的分辨率增强程序和设备
    • US5898505A
    • 1999-04-27
    • US788767
    • 1997-01-24
    • Qian LinBrian HoffmannJeffrey L. Trask
    • Qian LinBrian HoffmannJeffrey L. Trask
    • H04N1/40H04N1/405
    • H04N1/4053H04N1/40087
    • A print apparatus performs a halftoning action on a raster pixel image. The print apparatus includes a super-pixel data base for storing plural n.times.n superpixels, each superpixel corresponding to a subset (or "bucket") of gray level pixel values. The method comprises the steps of: logically tiling a dither matrix across the raster pixel image and outputting a threshold value which, logically and positionally corresponds to a given image pixel value. The given image pixel value is then quantized into a selected bucket of pixel values which encompass the given image pixel value. A proportionality value is then determined which identifies the relative position of the given image pixel value within the selected bucket of pixel values. The outputted threshold value is then compared to the determined proportionality value, and the selected bucket number is incremented to a next sequential bucket number if the proportionality value exceeds the threshold value. A superpixel is next selected that is identified by the selected bucket number or the next sequential bucket number, as the case may be. A superpixel includes plural halftone pixel values and the method selects one of those halftone pixel values that is positioned at a location determinable from the coordinates of the given image pixel value. The selected halftone pixel value from the superpixel is then passed to the print engine of the printer for rendering. The method of the invention is carried out, preferably, by an application specific integrated circuit so as to enable high speed halftoning of the raster image.
    • 打印装置对光栅像素图像执行半色调动作。 打印装置包括用于存储多个n×n个超像素的超像素数据库,每个超像素对应于灰度级像素值的子集(或“桶”)。 该方法包括以下步骤:在光栅像素图像之间逻辑平铺抖动矩阵并输出逻辑上和位置上对应于给定图像像素值的阈值。 然后将给定图像像素值量化为包含给定图像像素值的所选择的像素值桶。 然后确定比例值,其识别给定图像像素值在所选择的像素值桶内的相对位置。 然后将输出的阈值与确定的比例值进行比较,并且如果比例值超过阈值,则所选择的桶数增加到下一个顺序桶号。 下一个被选择的超级像素被选择的桶号或下一个顺序桶号(视具体情况而定)标识。 超像素包括多个半色调像素值,并且该方法选择位于可从给定图像像素值的坐标确定的位置处的那些半色调像素值之一。 然后将来自超级像素的所选择的半色调像素值传递到打印机的打印引擎以进行渲染。 本发明的方法优选地通过专用集成电路进行,以便能够对光栅图像进行高速半色调处理。
    • 9. 发明授权
    • Systems and methods for location-based real estate service
    • 基于位置的房地产服务的系统和方法
    • US08051089B2
    • 2011-11-01
    • US10427572
    • 2003-04-30
    • Ullas GargiRamin SamadaniQian Lin
    • Ullas GargiRamin SamadaniQian Lin
    • G06F17/30
    • G06Q30/06
    • A system and method for searching real estate properties, a system and method for estimating the size of an area, and a system and method for associating an image with information relevant to the image is disclosed. A system for searching real estate properties comprises a data storage unit configured to store map information, additional relevant georeferenced information and information about real estate properties, including information identifying the locations of the real estate properties; and a display unit configured to receive a search request from a user, communicate with the data storage unit, and provide search results to the user, including a map showing locations of real estate properties, in response to the search request, the display unit being further configured to displaying a user interface with which the user may associate information, personal to the user, with a particular real estate property.
    • 公开了一种用于搜索房地产属性的系统和方法,用于估计区域尺寸的系统和方法,以及用于将图像与与图像相关的信息相关联的系统和方法。 一种用于搜索不动产属性的系统包括:数据存储单元,被配置为存储地图信息,附加的相关地理参考信息和关于房地产属性的信息,包括识别房地产属性的位置的信息; 以及显示单元,被配置为从用户接收搜索请求,与数据存储单元通信,并且响应于搜索请求向用户提供搜索结果,包括显示房地产属性的位置的地图,显示单元是 进一步被配置为显示用户可以将与用户个人的信息与特定房地产属性相关联的用户界面。