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    • 11. 发明申请
    • IMAGE PROCESSING APPARATUS,IMAGE PROCESSING CIRCUIT AND IMAGE PROCESSING METHOD
    • 图像处理设备,图像处理电路和图像处理方法
    • US20110199650A1
    • 2011-08-18
    • US13027433
    • 2011-02-15
    • Yukio Okamura
    • Yukio Okamura
    • H04N1/40G06K9/40
    • H04N1/40G06T5/20G06T2207/20021
    • An image processing apparatus performs filtering on block image data that is a predetermined region of original image data using a filter having a main scanning width of N and a sub-scanning width of M. Using a register that can shift image data in a plurality of directions, the image processing apparatus processes pixel data columns in a sub-scanning direction included in the block image data in the following manner. The pixel data columns are processed in the sub-scanning direction and a direction opposite to the sub-scanning direction alternately for each of the pixel data columns, and the pixel data columns are also processed in the order in which the columns are aligned in a main scanning direction. This makes shorter the filtering processing time of the image processing apparatus that performs processing on a block-by-block basis.
    • 图像处理装置使用主扫描宽度为N,副扫描宽度为M的滤波器,对作为原始图像数据的预定区域的块图像数据进行滤波。使用能够移位多个图像数据的图像数据的寄存器 图像处理装置以如下方式处理包含在块图像数据中的副扫描方向上的像素数据列。 对于每个像素数据列,沿副扫描方向和与副扫描方向相反的方向处理像素数据列,并且像素数据列也按照列对齐的顺序进行处理 主扫描方向。 这使得基于逐块执行处理的图像处理装置的滤波处理时间变短。
    • 14. 发明授权
    • Image scanner provided with power saving mode and a system having a power saving mode
    • 具有省电模式的图像扫描器和具有省电模式的系统
    • US07567366B2
    • 2009-07-28
    • US10855957
    • 2004-05-28
    • Yukio Okamura
    • Yukio Okamura
    • H04N1/04
    • H04N1/00885H04N1/00551H04N1/00835H04N1/00896
    • A system having a power saving mode includes: a body provided with an original table having a surface for putting an original; an original cover coupled to the original table so that the original cover can be opened and closed to cover at least the surface of the original table; a light source that emits a beam; a power source that supplies power to the light source; a cover opening/closing detector that detects that the original cover is opened/closed; and a power source controller that controls the power source so that the power saving mode is released when the cover opening/closing detector detects that the original cover is closed during the power saving mode.
    • 具有省电模式的系统包括:主体,设置有具有用于放置原件的表面的原始台; 一个原始盖子,连接到原来的桌子,使原来的盖子可以打开和关闭,以至少覆盖原来的桌子的表面; 发射光束的光源; 向光源供电的电源; 检测原始盖被打开/关闭的盖打开/关闭检测器; 以及电源控制器,其控制电源,使得当在省电模式期间盖开启/关闭检测器检测到原盖被关闭时,省电模式被释放。
    • 15. 发明授权
    • Method of setting reference data of shading corrections, and image reading apparatus
    • 设置阴影校正参考数据的方法和图像读取装置
    • US07236270B2
    • 2007-06-26
    • US10241222
    • 2002-09-10
    • Yukio Okamura
    • Yukio Okamura
    • H04N1/00
    • H04N1/401
    • A white reference image is inputted to an image sensor with a light source lit up, and white reference data is set every effective photosensor element by inspecting the output signals of the image sensor as to the white reference image (steps S305 and S310). After the input of the white reference image, the light source is extinguished (point e in FIG. 1), a black reference image is inputted to the image sensor (step S315), and black reference data is set every effective photosensor element by inspecting the output signals of the image sensor as to the black reference image (step S320). After the light source is lit up (point f in FIG. 1), the optical image of a subject is inputted to the image sensor, and image data outputted to shading corrections with the white reference data and the black reference data are outputted (step S330)
    • 白光参考图像被输入到具有点亮的光源的图像传感器,并且通过检查图像传感器关于白色参考图像的输出信号(步骤S 305和S 310),每个有效光电传感元件设置白色参考数据, 。 在白参考图像的输入之后,光源被熄灭(图1中的点e),黑色参考图像被输入到图像传感器(步骤S3515),并且每个有效光电传感器元件都设置黑色参考数据 检查图像传感器对黑色参考图像的输出信号(步骤320)。 在光源点亮(图1中的点f)之后,将被摄体的光学图像输入到图像传感器,并输出输出到白色参考数据和黑色参考数据的阴影校正的图像数据(步骤 S 330)
    • 17. 发明授权
    • Black reference data calculation method and image reader
    • 黑色参考数据计算方法和图像阅读器
    • US06897989B2
    • 2005-05-24
    • US09934485
    • 2001-08-23
    • Yukio Okamura
    • Yukio Okamura
    • G06T1/00G03F3/08H04N1/19H04N1/401H04N1/407H04N1/46G06K15/00
    • H04N1/407
    • A light source is turned off (S101), incidence of light on a line sensor is shut off, and the output value of an electric signal output from each of pixels of the line sensor (S102). Since the output value is detected 128 times (S103), random noise can be reduced equal to or less than the variation in the output values for each pixel of the line sensor. The output values detected by a detection section are added up by an average value difference calculation section (S104). The sum total of the output values is divided by the number of detection times (S105) to calculate the average value of the output values (S106). The average value difference calculation section calculates the difference between a setup value and the average value as an average value difference (S107) and the average value difference is stored in black reference memory for each pixel (S108). The average value difference is stored in the black reference memory, so that the storage capacity can be decreased as compared with the case where black reference data itself is stored.
    • 关闭光源(S101),关闭线传感器上的光的入射以及从线传感器的每个像素输出的电信号的输出值(S102)。 由于输出值被检测到128次(S103),所以可以将随机噪声减小到等于或小于行传感器的每个像素的输出值的变化。 由检测部分检测的输出值由平均值差计算部分相加(S104)。 将输出值的总和除以检测次数(S105),以计算输出值的平均值(S106)。 平均值差计算部分将设定值和平均值之间的差作为平均值差(S107)计算,平均值差被存储在每个像素的黑色参考存储器中(S108)。 平均值差存储在黑色参考存储器中,使得与存储黑色参考数据本身的情况相比,可以减小存储容量。
    • 19. 发明申请
    • IMAGE PROCESSING CIRCUIT AND IMAGE PROCESSING APPARATUS
    • US20090185754A1
    • 2009-07-23
    • US12351750
    • 2009-01-09
    • Yukio Okamura
    • Yukio Okamura
    • G06K9/40G06K9/20
    • G06T5/20G06T1/20
    • There is provided an image processing circuit to which a block image obtained by cutting an area corresponding to a predetermined main scanning width and a predetermined sub-scanning width from an original image is input and which performs filter processing on each of pixels constituting the block image to be output. The image processing circuit includes: a memory which arranges each of segments in each of pixel rows in a sub-scanning direction and stores the block image, the segment being formed such that a bit width is a width equal to or larger than a main scanning width of a filter, a storage capacity is at least a double of a sub-scanning width of the filter, and each of the pixel rows of the block image is divided into the bit widths; a reading unit which reads pixel data as a filter processing target from the memory in a segment unit and outputs the pixel data; a filter processing unit which includes multipliers, which multiply the pixel data output by the reading unit and a predetermined filter coefficient corresponding to a pixel location of the pixel data, of the number corresponding to the main scanning width of the filter and which performs the filter processing by performing multiplication and addition calculations to output pixel data of a notice pixel; and a register which temporarily stores the pixel data read by the reading unit. The reading unit determines whether the pixel data as the filter processing target are all contained in one segment. When the pixel data as the filter processing target are all contained in the one pixel, the reading unit reads and outputs the pixel data of the segment. When the pixel data as the filter processing target are contained in two segments, the reading unit reads the pixel data of one of the two segments to stores the pixel data in the resistor and reads the pixel data of the other thereof together with the pixel data stored in the register to output the pixel data to the filter processing unit.