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    • 84. 发明授权
    • Method of determining threshold array for generating gradation image
    • 确定用于生成渐变图像的阈值阵列的方法
    • US07158264B2
    • 2007-01-02
    • US10166164
    • 2002-06-11
    • Yoshiaki Inoue
    • Yoshiaki Inoue
    • H04N1/405H04N1/409G06T5/00
    • H04N1/4051
    • Halftone image data is generated according to a threshold array in which thresholds T up to a given gradation have been determined, and candidate pixels to be blackened are then determined. Then, a low-frequency component extractor extracts low-frequency component data from density image data which simulates the density of the halftone image data corresponding to an output image from an image output apparatus. A particular frequency component divider 70 divides the extracted low-frequency component data into particular frequency component data for intensifying the low-frequency components, and blackening candidate pixels for intensifying the particular frequency components are excluded, thus narrowing down candidate pixels. The positions of thus determined blackening candidate pixels are determined as the positions of thresholds for a next gradation.
    • 根据其中确定了达到给定灰度的阈值T的阈值阵列来生成半色调图像数据,然后确定待黑化的候选像素。 然后,低频分量提取器从模拟来自图像输出装置的与输出图像对应的半色调图像数据的浓度的浓度图像数据中提取低频分量数据。 特定的频率分量除法器70将所提取的低频分量数据划分成用于增强低频分量的特定频率分量数据,并且排除加强特定频率分量的黑化候选像素,从而使候选像素变窄。 这样确定的黑化候选像素的位置被确定为用于下一个灰度的阈值的位置。
    • 89. 发明授权
    • Image display apparatus
    • 图像显示装置
    • US06441828B1
    • 2002-08-27
    • US09391941
    • 1999-09-08
    • Haruo ObaKunihito SawaiYoshiaki InoueIwami Tsujimura
    • Haruo ObaKunihito SawaiYoshiaki InoueIwami Tsujimura
    • G09G534
    • G06F3/147G09G2320/0626G09G2340/0492Y10S345/905
    • In an image display apparatus, information on a direction in which an image is to be displayed on a display panel is recorded in a memory card, and a to-be-displayed image signal corresponding to the displaying-direction information read from the memory card is displayed on the display panel. The displaying-direction information relates to a direction in which the image is to be displayed on the display panel. More particularly, it is information indicative of a direction designated by the user of the apparatus pressing a rotate button on an operation panel and in which image information initially read from the memory card is displayed on the display panel. Pressing the rotate button a maximum of three times for one image will rotate the image clockwise, for example, whereby it is possible to designate a desired direction in which the image is to be displayed. Thus an image can be displayed in a correct direction even with no designation for an image's normal direction regardless of whether the image display apparatus itself is placed with the shorter or longer side down.
    • 在图像显示装置中,将在显示面板上显示图像的方向的信息记录在存储卡中,以及与从存储卡读取的显示方向信息相对应的待显示图像信号 显示在显示面板上。 显示方向信息涉及在显示面板上显示图像的方向。 更具体地,它是指示由用户按下操作面板上的旋转按钮指定的方向的信息,并且其中最初从存储卡读取的图像信息显示在显示面板上。 例如,为一个图像最多按旋转按钮三次将顺时针旋转图像,由此可以指定要显示图像的期望方向。 因此,无论图像显示装置本身是以更短还是更长的一侧放置,即使没有指定图像的法线方向,也可以以正确的方向显示图像。