公开(公告)号：US5355234A

公开(公告)日：1994-10-11

申请号：US168322

申请日：1993-12-17

申请人： Eun-jin Kim

发明人： Eun-jin Kim

IPC分类号： H04N1/028 ,  G06T1/00 ,  H04N1/04 ,  H04N1/48 ,  G02B3/08 ,  G02B5/23 ,  H04N1/46 ,  H04N9/07 ,  H04N9/73

CPC分类号： H04N1/482

摘要： An image scanning apparatus which can reduce a shading distortion generated by luminous characteristics of a light source, vignetting of a lens, etc. adopts color filters having a geometrical structure which enables to counterbalance a shading distortion and is characterized in that a line sensor is vertically arranged for the radial direction of the rotary filter. The image scanning apparatus can accomplish a simple shading calibration by arranging color filters and the line sensor so that a shading distortion is calibrated geometrically.

摘要翻译： 可以减少由光源的发光特性，透镜等的晕影产生的阴影失真的图像扫描装置采用具有能够抵消阴影变形的几何结构的滤色器，其特征在于，线传感器是垂直的 布置为旋转过滤器的径向。 图像扫描装置可以通过布置滤色器和线传感器来实现简单的阴影校准，使得阴影变形几何校准。

公开(公告)号：US5859712A

公开(公告)日：1999-01-12

申请号：US774785

申请日：1996-12-30

申请人： Eun-jin Kim

发明人： Eun-jin Kim

IPC分类号： H04N1/028 ,  G06T1/00 ,  H04N1/04 ,  H04N1/19 ,  H04N1/191 ,  H04N1/48 ,  H04N1/46

CPC分类号： H04N1/1912 ,  H04N1/486

摘要： A sensor-to-sensor distance correcting method and a circuit therefor in an image reading apparatus having a plurality of line sensors are provided. In the image reading apparatus including an image sensing means for converting optical image information into an electrical signal, an analog-to-digital converting means for converting a signal from said image sensing means into a digital signal, and a sensor-to-sensor distance correcting means, the means for correcting a distance between sensors comprises an extra-line corrector for correcting a registration error of an integer line unit among distances between sensors by housing sensor data for reading an image at a preceding position on a manuscript using red and green signal delay memories, delaying the housed sensor data until senor data at a next position is read, and reading the delayed sensor data when sensor data at the last position is read, and an intra-line corrector for correcting a decimal point unit registration error among the distances between sensors using a look-up table for housing interpolation kernel data. Therefore, a geometric image registration error generated on an input image caused by the distance between said image sensors is corrected thereby obtaining a high quality image.

摘要翻译： 提供了具有多个线传感器的图像读取装置中的传感器到传感器距离校正方法及其电路。 在包括用于将光学图像信息转换为电信号的图像感测装置的图像读取装置中，用于将来自所述图像感测装置的信号转换为数字信号的模拟数字转换装置以及传感器到传感器的距离 校正装置，用于校正传感器之间的距离的装置包括用于校正传感器之间的距离之间的整数行单位的配准误差的外线校正器，该传感器用于通过使用红色和绿色来容纳用于读取原稿上的前一位置处的图像的传感器数据 信号延迟存储器，延迟所容纳的传感器数据，直到读取下一个位置的传感数据，并且读取最后位置的传感器数据时读取延迟的传感器数据，以及用于校正小数点单位登记误差的线内校正器 传感器之间的距离使用查找表来插入内插数据。 因此，校正由所述图像传感器之间的距离引起的输入图像上产生的几何图像配准误差，从而获得高质量图像。

公开(公告)号：US5274471A

公开(公告)日：1993-12-28

申请号：US799065

申请日：1991-11-27

申请人： Eun-jin Kim

发明人： Eun-jin Kim

IPC分类号： B41J2/52 ,  G06T3/40 ,  G06T5/00 ,  H04N1/00 ,  H04N1/387 ,  H04N1/40 ,  H04N1/407

CPC分类号： G06T3/40 ,  H04N1/40 ,  H04N1/40068

摘要： An apparatus for converting a resolution and a gray scale of document image data, which includes a latch circuit for setting variable values of image control data, a resolution-converting clock generator for generating resolution-converting clock signals, a clock selector for selecting a pixel clock signal, a unit data detector for detecting byte detecting clock signal according to gray scale conversion as a unit data, an image data converter for gray scale conversion and binary codification of the image data, an image data selector for selecting the gray scale of the image data of the image data converter, and an image data output portion for outputting the image data with the selected gray scale in units of bytes. The image data processing can be performed at high speed, and the resolution and the gray scale control is carried out in the hardware, which allows the apparatus to be highly compatible and also to be widely adapted.

摘要翻译： 一种用于转换文件图像数据的分辨率和灰度级的装置，其包括用于设置图像控制数据的可变值的锁存电路，用于产生分辨率转换时钟信号的分辨率转换时钟发生器，用于选择像素的时钟选择器 时钟信号，用于根据作为单位数据的灰度转换检测字节检测时钟信号的单位数据检测器，用于灰度转换的图像数据转换器和图像数据的二进制编码;图像数据选择器，用于选择灰度级 图像数据转换器的图像数据，以及用于以字节为单位输出具有所选灰度的图像数据的图像数据输出部分。 可以高速执行图像数据处理，并且在硬件中执行分辨率和灰度级控制，这允许装置高度兼容并且也被广泛地适应。