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1. 发明专利

JP5517428B2 Image scanner 有权
公开(公告)号：JP5517428B2
公开(公告)日：2014-06-11
申请号：JP2008231191
申请日：2008-09-09
申请人：キヤノン株式会社
发明人：明洋吉谷
IPC分类号： H04N1/19 , G06T1/00 , H04N1/04 , H04N1/40 , H04N1/48 , H04N1/60
CPC分类号： H04N1/486
摘要： An image-reading apparatus that reads an image of an original includes an array sensor including photoelectric-conversion elements linearly arranged; an optical system configured to form the image of the original onto the array sensor; a signal-processing circuit configured to convert outputs of the array sensor into digital signals and sequentially output pixel values of pixels that constitute a line; a sample-rate converter configured to sequentially receive the pixel values of the pixels that constitute the line output from the signal-processing circuit, convert spatial sample intervals of the line, and output the resultant pixel values; a data table created by reflecting aberration characteristics of the optical system therein; and a controller configured to control the sample-rate converter using data in the data table.

2. 发明专利

JP4938943B2 Image reading method, the image reading device, program and storage medium 有权
公开(公告)号：JP4938943B2
公开(公告)日：2012-05-23
申请号：JP2001276252
申请日：2001-09-12
申请人：キヤノン株式会社
发明人：延正福澤
IPC分类号： G06T1/00 , H04N1/19 , H04N1/04 , H04N1/10 , H04N1/12 , H04N1/193 , H04N1/48 , H04N1/60
CPC分类号： H04N1/0464 , H04N1/1013 , H04N1/12 , H04N1/193 , H04N1/486 , H04N1/6027
摘要： Disclosed is an image reading apparatus capable of selectively executing a flow-scan reading method in which a document is read while the document is transported in a state in which a reader is fixed at a predetermined location, and a fixed reading method in which a document is read while the reader is moved in a predetermined direction in a state in which the document is held fixed, the apparatus having a first holding member for holding a document at the predetermined location for implementation of the flow-scan reading method, and a second holding member, which has a spectral transmittance different from that of the first holding member, for holding a document for implementation of the fixed reading method. The apparatus discriminates whether the flow-scan or fixed reading method is executed and sets coefficients, which are used in at least the reader or the image processing unit, in accordance with the flow-scan or fixed reading method. Using the set coefficients, a document is read by the reader and processing is applied to the image signal obtained by reading the document.

3. 发明专利

JP4795063B2 Image reading apparatus, an image processing apparatus and program 有权
公开(公告)号：JP4795063B2
公开(公告)日：2011-10-19
申请号：JP2006075019
申请日：2006-03-17
申请人：株式会社リコー
发明人：修稲毛
IPC分类号： H04N1/19 , H04N1/04
CPC分类号： H04N1/486 , H04N1/401 , H04N2201/044 , H04N2201/0454 , H04N2201/0466
摘要： An image processor includes a reading unit (10, 13, 17) that moves a scanning optical system (10, 13) toward a reference white sheet (101) to read the reference white sheet (101) from a direction along which the scanning optical system (10, 13) returns to the carried document reading glass (6) before reading one sheet of a document mounted on a carried document reading glass (6) by an automatic document feeding unit (3) in a sheet document reading mode of forming an image of the document carried by the automatic document feeding unit (3) by an image sensor (15) through the scanning optical system (10, 13) facing the carried document reading glass (6).

4. 发明专利

JP2011205360A Image reading apparatus 有权
标题翻译：图像阅读器
公开(公告)号：JP2011205360A
公开(公告)日：2011-10-13
申请号：JP2010070163
申请日：2010-03-25
申请人： Mitsubishi Electric Corp , 三菱電機株式会社
发明人： OTA AKIRA
IPC分类号： H04N1/19 , G06T1/00 , H04N1/04 , H04N1/40
CPC分类号： H04N5/367 , H04N1/02835 , H04N1/193 , H04N1/401 , H04N1/486 , H04N5/3692
摘要： PROBLEM TO BE SOLVED: To provide an image reading apparatus with high reading accuracy by executing high fidelity correction on a specific pixel.SOLUTION: The image reading apparatus includes a first calculation means for calculating an output value from a photoelectric conversion output value of a photo detection part adjacent to a specific photo detection part in a read-width direction, a second calculation means for calculating a ratio between one value and the other value, one value being an output value of the photo detection part disposed in conveyance direction of the specific photo detection part, and the other value being the photoelectric conversion output value of the photo detection part adjacent in the read-width direction to the photo detection part disposed in the conveyance direction of the specific photo detection part, and a pixel correcting circuit part for multiplying the values obtained by the first calculation means and second calculation means, substituting the value for the output value at the pixel position of the photo detection part specified by a pixel detecting circuit, and then line-outputting it together with the output values at the pixel positions of the photo detection parts not specified by the pixel detecting circuit.
摘要翻译：要解决的问题：通过对特定像素执行高保真校正来提供具有高读取精度的图像读取装置。解决方案：图像读取装置包括：第一计算装置，用于根据照片的光电转换输出值计算输出值检测部分，其与读取宽度方向上的特定光检测部分相邻;第二计算装置，用于计算一个值和另一个值之间的比率;一个值是沿特定光电检测部分的传送方向设置的光检测部分的输出值; 光检测部分，另一个值是在沿着特定光检测部分的输送方向设置的光检测部分的沿读取宽度方向相邻的光检测部分的光电转换输出值，以及像素校正电路部分，将由第一计算装置和第二计算装置获得的值相乘，代入v 提供由像素检测电路指定的光检测部分的像素位置处的输出值，然后将其与由像素检测电路未指定的光检测部件的像素位置处的输出值一起输出。

5. 发明专利

JP2011082767A Image reading apparatus 有权
标题翻译：图像阅读器
公开(公告)号：JP2011082767A
公开(公告)日：2011-04-21
申请号：JP2009232863
申请日：2009-10-06
申请人： Canon Inc , キヤノン株式会社
发明人： MORIKAWA DAISUKE
IPC分类号： H04N1/04 , G03B27/54 , H04N1/028
CPC分类号： H04N1/486 , H04N1/02865 , H04N1/0303 , H04N1/0305 , H04N1/1017 , H04N1/193 , H04N2201/0081 , H04N2201/0246 , H04N2201/02474 , H04N2201/02485
摘要： PROBLEM TO BE SOLVED: To provide an image reading apparatus which, when the reading speed of color sensors is different from that of a monochrome line sensor in a four-line sensor including three color line sensors and one monochrome line sensor, can reduce unevenness in main-scanning-direction reading luminance and degradation in image quality caused by a sensitivity difference of spectral characteristic between the color line sensor and monochrome line sensor due to the presence/absence of color filters. SOLUTION: The image reading apparatus includes: a light source 2106 which includes a plurality of LEDs, and which irradiates the document with light; an LED current adjusting unit 2101 which sets the amount of current to be supplied to each LED so that the current amounts change from the end portion to the central portion in the main scanning direction for document reading; a duty adjusting unit 2103 which sets different pulse width from the end portion to the central portion in the main scanning direction in order to perform PWM of the current to be supplied to each LED; and a drive circuit 2105 which drives the LEDs by the current amounts set by the LED current adjusting unit 2101 and the duty adjusting unit 2103. COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：提供一种图像读取装置，当在包括三个彩色线传感器和一个单色线传感器的四线传感器中，当彩色传感器的读取速度与单色线传感器的读取速度不同时，可以减少主扫描方向读取亮度的不均匀性和由于有无滤色器而导致的彩色线传感器和单色线传感器之间的光谱特性的灵敏度差引起的图像质量的劣化。解决方案：图像读取装置包括：包含多个LED并且用光照射文件的光源2106; LED电流调节单元2101，其设置要供应到每个LED的电流量，使得电流量从文档读取的主扫描方向上的端部到中心部分变化; 负责调整单元2103，其在主扫描方向上从端部到中心部分设置不同的脉冲宽度，以便执行要供给到每个LED的电流的PWM; 以及驱动电路2105，其通过LED电流调节单元2101和占空比调整单元2103设定的电流量驱动LED。（C）2011，JPO＆INPIT

6. 发明专利

JP2010278944A Image reading device and image reading method 有权
标题翻译：图像读取装置和图像读取方法
公开(公告)号：JP2010278944A
公开(公告)日：2010-12-09
申请号：JP2009131783
申请日：2009-06-01
申请人： Seiko Epson Corp , セイコーエプソン株式会社
发明人： HOCK TEE BOON
IPC分类号： H04N1/19 , G06T1/00 , H04N1/04 , H04N1/40
CPC分类号： H04N1/1017 , H04N1/0473 , H04N1/193 , H04N1/486 , H04N2201/044 , H04N2201/04703 , H04N2201/0472 , H04N2201/04731 , H04N2201/04732 , H04N2201/04787 , H04N2201/04791 , H04N2201/04793
摘要： PROBLEM TO BE SOLVED: To provide a technique with which color shift in image data expressing an original document is suppressed.
SOLUTION: An image reading device (image scanner) 10 is provided with: a color shift adjustment unit 814 for adjusting a positional shift in a sub-scanning direction in the read data of each color component imaged by a plurality of line sensors 560 according to a design offset amount DV; an image generation unit 816 for generating the image data expressing an original 90 based on the read data adjusted by the color shift adjustment unit 814; and an offset correction unit 818 for correcting a design offset amount DV according to a variation of magnification that is a variation from a design value of an image forming magnification at which the image of the original 90 is formed on a light receiving element 562.
COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：提供抑制表示原始文档的图像数据中的颜色偏移的技术。解决方案：图像读取装置（图像扫描器）10具有：色移调整部814，用于调整由多条线传感器成像的各色成分的读取数据中的副扫描方向的位置偏移 560根据设计偏移量DV; 图像生成单元816，用于基于由颜色偏移调整单元814调节的读取数据生成表示原稿90的图像数据; 以及偏移校正单元818，用于根据作为与形成原稿90的图像的图像形成倍率的设计值在光接收元件562上的变化的放大倍率的变化来校正设计偏移量DV。 P>版权所有（C）2011，JPO＆INPIT

7. 发明专利

JP4518134B2 Image processing apparatus and image processing method 有权
公开(公告)号：JP4518134B2
公开(公告)日：2010-08-04
申请号：JP2007291532
申请日：2007-11-09
申请人：村田機械株式会社
发明人：勝巳南野
IPC分类号： H04N1/46 , H04N1/60
CPC分类号： H04N1/486 , H04N1/56
摘要： An image processing method and apparatus includes a color space conversion unit arranged to convert pixel data scanned by a line sensor of each color component into first chromaticity data and second chromaticity data, and an achromatic color determining unit arranged to determine whether or not the pixel data is achromatic. The achromatic color determining unit includes a comparison unit arranged to compare an achromatic color determination area with the pixel data in a color space defined by orthogonal coordinates having each chromaticity data as a coordinate axis. The achromatic color determination area is an elongated area that includes a coordinate origin of the color space, that is set based on a coordinate position of a false color acquired by using a size and position of displacement of the scanning position of each color component generated in accordance with the scanning speed, and that extends in an opposite direction from the coordinate origin.

8. 发明专利

JP2010124460A Image reading apparatus and image forming apparatus 审中-公开
标题翻译：图像读取装置和图像形成装置
公开(公告)号：JP2010124460A
公开(公告)日：2010-06-03
申请号：JP2009232870
申请日：2009-10-06
申请人： Canon Inc , キヤノン株式会社
发明人： MORIKAWA DAISUKE
IPC分类号： H04N1/19 , G03B27/54 , G06T1/00 , H04N1/028
CPC分类号： H04N1/03 , G02B7/182 , G02B17/0647 , H04N1/0303 , H04N1/0305 , H04N1/1017 , H04N1/193 , H04N1/401 , H04N1/486
摘要： PROBLEM TO BE SOLVED: To reduce unevenness in main-scanning read luminance of a chromatic color while suppressing an increase in the size and cost of an apparatus, an increase in the number of colors of a reference plate, and complication of a circuit arrangement. SOLUTION: An image reading apparatus includes a light source which irradiates an original with light, an imaging unit which images by condensing reflected and scattered light from the original via a plurality of plane mirrors and imaging mirrors, and a photoelectric conversion unit which converts, into an electrical signal, the reflected and scattered light imaged by the imaging unit. The imaging unit is an imaging optical system which is adjusted such that the difference between the spectral characteristic at an end portion in the main-scanning direction of the image reading apparatus and that at the central portion in the main-scanning direction becomes 5% or less at the peak wavelength of the light source. COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题为了减少彩色的主扫描读取亮度的不均匀性，同时抑制装置的尺寸和成本的增加，参考板的颜色数量的增加和电路布置。解决方案：图像读取装置包括用光照射原稿的光源，经由多个平面镜和成像镜聚焦来自原稿的反射和散射光的成像单元，以及光电转换单元，将由成像单元成像的反射和散射光转换为电信号。成像单元是调整成使得图像读取装置的主扫描方向的端部的分光特性与主扫描方向的中央部分的分光特性之差为5％的成像光学系统，较少在光源的峰值波长。版权所有（C）2010，JPO＆INPIT

9. 发明专利

JP4339543B2 Method and apparatus for up interpolating Bayer image 有权
公开(公告)号：JP4339543B2
公开(公告)日：2009-10-07
申请号：JP2001524054
申请日：2000-09-08
申请人：シルバーブルックリサーチピーティワイリミテッド
发明人：ウォームスレイ，シモン，ロバート , ラプストゥン，ポール
IPC分类号： B41J2/52 , H04N1/387 , B41J2/525 , B41J29/393 , G06T1/00 , G06T3/40 , G06T3/60 , G06T5/00 , G06T5/20 , H04N1/405 , H04N1/409 , H04N1/46 , H04N1/60 , H04N9/07
CPC分类号： G06T3/606 , B41J2/04528 , B41J2/04543 , B41J2/04563 , B41J2/04586 , B41J2/04591 , B41J29/393 , G06T3/4007 , G06T3/4015 , G06T3/60 , G06T5/003 , G06T5/20 , G06T2207/10024 , H04N1/3877 , H04N1/4092 , H04N1/46 , H04N1/486 , H04N1/6016 , H04N9/045
摘要： The invention provides for a method of sharpening an image to be sent to a printhead. The method includes the steps of receiving an RGB (red, green, blue) data set indicative of the image, and deriving an initial luminance channel from the received data set. The method also includes the steps of sharpening the initial luminance channel to form a revised luminance channel, and incorporating the revised luminance channel into the data set.

10. 发明专利

JP4305369B2 Image scanner 有权
公开(公告)号：JP4305369B2
公开(公告)日：2009-07-29
申请号：JP2004326869
申请日：2004-11-10
申请人：コニカミノルタビジネステクノロジーズ株式会社
发明人：和宏石黒 , 浩之鈴木 , 秀之鳥山
IPC分类号： H04N1/19 , G06T1/00 , G06T5/00 , H04N1/04 , H04N1/40 , H04N1/46 , H04N1/60
CPC分类号： H04N1/4097 , H04N1/00002 , H04N1/00013 , H04N1/00039 , H04N1/00053 , H04N1/00063 , H04N1/00068 , H04N1/00082 , H04N1/1008 , H04N1/486
摘要： An image reading apparatus includes, with the purpose of detecting with improved precision noise generated due to dust on a platen, three line sensors spaced from each other in a sub scanning direction to scan an original in the sub scanning direction, the platen between the original and the three line sensors, a moving mechanism for moving the platen at a rate relative to the line sensors, the rate being different from that of the original relative to the line sensors, an interline corrector synchronizing three data output from the three line sensors to be values of pixels reading a single location on the original, and a noise detector receiving these data synchronized by the interline corrector that are provided successively line by line, and the noise detector includes an isolated noise determiner determining that an isolated point of a chromatic color is a noise pixel.

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