Matches 1 - 50 out of 84 1 2 >


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US20060087701 Prescanning in image printing/reading apparatus  
An image printing/reading apparatus in which a reference white board for prescanning can be prevented from being soiled with ink, and the influence of stray light from a paper discharge port can...
US20070046976 Document input and output device having security protection function and document input and output method of the device  
A document input and output device with a security protection function, the document input and output device being connected to a network and using a plurality of communication protocols, the...
US20060285174 Shading profile value correction method and image scanning device  
A shading profile value correction method and an image scanning device are disclosed. The shading profile value correction method comprises generating and storing reference shading profile values...
US20080100879 SCANNING DEVICE AND SHADING CORRECTION METHOD THEREOF  
A scanning device includes a display part, a flat bed on which a manuscript is loaded, a white reference sheet provided at one side of the flat bed, a scanning head to divide the white reference...
US20070216962 Image reader, image processor, and computer program product  
An image processor includes a reading unit that moves a scanning optical system toward a reference white sheet to read the reference white sheet from a direction along which the scanning optical...
US20120154879 DOCUMENT READER  
Generation of shading correction data is started before an instruction to start reading of the document is input in a case in which time to generate shading correction data corresponding to a...
US20070211270 PRINTER AND PRINT SYSTEM  
A printer for executing printing on the basis of tone data representing a tone of one of a plurality of colors of ink, includes an input unit that inputs first tone data for a color represented by...
US20070216961 Shading compensation circuit and control method thereof  
A shading compensation circuit is provided which is capable of storing correction coefficients for shading compensation having optimal bit lengths, so that the data size of the correction...
US20080170273 IMAGE SCANNING APPARATUS AND SHADING CORRECTION METHOD  
The present invention provides a technique that makes it possible to realize highly accurate shading correction regardless of presence of dust or the like in a shading correction plate without...
US20080218811 KEYSTONE CORRECTING METHOD AND DISPLAY APPARATUS  
Disclosed are a keystone correction method and a display apparatus using the same. The keystone correction method can include receiving a plurality of pixel data included in an image signal of a...
US20070285730 Document Reading Method, Document Reader, Image Forming Device, And Image Scanner  
Photoelectric conversion elements of line sensors (CIS22 to CIS26) arranged in a zigzag manner read a white reference plate to acquire a white reference read value A, and a white reference read...
US20140218772 DOCUMENT READING APPARATUS  
An image reading apparatus corrects a deviation of a reading position of a document to accurately correct a luminance intensity distribution variation. Light is radiated to a shading plate (102)...
US20100091339 IMAGE SCANNING APPARATUS AND SHADING CORRECTING METHOD THEREOF  
An image scanning apparatus includes a first scanning unit to scan a first side of a conveyed document and detect a white area, a direction change unit to re-convey the conveyed document to a...
US20050179954 Image processing apparatus resolving dust problem  
An image processing apparatus includes a reading device stationed at a reading position. The reading device includes a light source that emits a reading light to an original document passing...
US20060072167 Method of image signal modulation based on light source luminosity  
An image signal modulation method is applicable to an optical scanner to obtain compensated image when the light source is not stable during starting. It first scans a document to get...
US20080204820 IMAGE READING APPARATUS AND SHADING CORRECTION DATA GENERATING METHOD  
An image reading apparatus capable of generating accurate shading correction data while removing noise. A shading reference plate is arranged at a location having different optical distance...
US20050111055 Apparatus and method of image sharpness enhancement  
An apparatus and method of image sharpness enhancement. The apparatus includes a slope value calculator to set in an input video signal a window of a predetermined size with reference to a current...
US20050275904 Image capturing apparatus and program  
Shading occurring in an image captured by an image sensor has a characteristic in that the light amount decrease ratio is asymmetrical with respect to the center of the image and varies according...
US20090201519 IMAGE READING DEVICE, IMAGE FORMING APPARATUS, AND IMAGE READING METHOD  
An image forming apparatus includes an image reading device which reads an image in accordance with a sheet-through method. The image reading device includes a reading device and a control device....
US20050270589 Image scanner  
A method of correcting information scanned by an image scanner includes scanning a first number of positions of a first portion of a correction member having different reflectances to obtain first...
US20090015879 IMAGE PICKUP DEVICE, SIGNAL PROCESSING DEVICE AND SIGNAL PROCESSING METHOD  
An imaging device for reducing fixed pattern noise caused by dark current or the like. The imaging device (10) includes a solid state imaging device (11) and a signal processor (12). The solid...
US20090195840 METHOD OF SHADING CORRECTION IN IMAGE READER AND IMAGE PROCESSING APPARATUS  
The invention includes a brightness reading position control section for reading reference data of a reference plate a plurality of times for different locations by an image reader, a reading data...
US20090067009 IMAGE READING APPARATUS AND IMAGE PROCESS METHOD  
Disclosed is an image reading apparatus which reads images in a front side and a back side of a document by passing the document through the image reading apparatus once including a first reading...
US20080112017 IMAGE READING DEVICE  
An image reading device includes a reference member, a reading unit, a first reference value setting unit, a detecting unit, a second reference value setting unit, a determining unit, and a pixel...
US20070035784 Image processing method and apparatus  
The present invention discloses an image processing method for correcting shading based on the approximated surface of a brightness distribution of an image acquired with a digital camera. In the...
US20070223064 Image reading apparatus, image processing method and computer-readable recording medium  
Disclosed is an image reading apparatus, which comprises: (1) an image reading section which scans a calibration sheet for calibration and reads image information thereof; and (2) a correction...
US20070146813 IMAGE READING APPARATUS AND METHOD  
An image reading apparatus for reading an image on an original includes reading means for optically reading the image of the original while the image is illuminated by light from a light source;...
US20100073734 SCANNER, IMAGE CORRECTING METHOD THEREIN, AND IMAGE FORMING APPARATUS HAVING THE SAME  
A scanner including: a transparent plate; a light emitting unit that emits light to an object on the transparent plate; a sensor to form an image of the object; a focusing lens unit that is...
US20080049263 IMAGE FORMING APPARATUS AND INFORMATION PROCESSING METHOD  
An image forming apparatus is disclosed. The image forming apparatus comprises an input unit through which a condition for reading image data of a document is input, a reading unit to read the...
US20130003138 SHADING DEVICE FOR IMAGE READING SECTION  
A shading device includes: a shading member to pass a conveying path for conveying a recoding medium to plural image reading sections and reach the plural image reading sections; and a moving...
US20120057209 IMAGE FORMING APPARATUS AND IMAGE FORMING METHOD  
An image forming apparatus includes an image interpolation unit to compute a correct pixel value of a target pixel subject to interpolation of a halftone image. The image interpolation unit...
US20080055668 Image reading apparatus, image reading method, and program  
An image reading apparatus includes an image reading sensor reading an image from a document, a light source turned on at a time when the image is read from the document by the image reading...
US20060126125 Image reading apparatus, image reading method and image processing apparatus  
An image reading apparatus is disclosed. The image reading apparatus provides plural sensors and a correction unit that corrects displacement of image data caused by intervals among the plural...
US20150163376 APPARATUS FOR AND METHOD OF PROCESSING DOCUMENT IMAGE  
An apparatus for and a method of processing a document image are provided. The apparatus comprises: an estimation unit for estimating a brightness image from the document image; and a correction...
US20080291505 METHOD, APPARATUS FOR CORRECTING IMAGE SIGNAL FROM IMAGE SENSOR, AND IMAGING SYSTEM WITH APPARATUS  
A method of correcting an image signal generated by a charge coupled device (CCD) image sensor in an imaging system is provided. The imaging system stores a number of gamma correction curves, each...
US20130321877 IMAGE READING APPARATUS AND CUTTING APPARATUS  
An image reading apparatus including an image reading unit configured to read an image of a workpiece; a plurality of holding members each configured to hold the workpiece while image reading is...
US20130321876 READING-USE HOLDING MEMBER FOR USE WITH IMAGE READING APPARATUS, IMAGE READING APPARATUS, AND CUTTING APPARATUS  
A reading-use holding member which is configured for use with an image reading apparatus including an image reading unit and which holds a sheet of workpiece while image reading is performed by...
US20130293934 IMAGE READING APPARATUS THAT PERFORMS SHADING CORRECTION, METHOD OF CONTROLLING THE SAME, AND STORAGE MEDIUM  
An image reading apparatus capable of efficiently performing shading correction. The image reading apparatus includes a reading unit that is rotatable for reading an original. A CPU causes the...
US20120120457 IMAGE READING APPARATUS  
A method is provided for processing image data read from a book document placed on a platen of an image reading apparatus. The method includes determining a background pixel of the image data...
US20100315687 IMAGE READING DEVICE, IMAGE READING DEVICE SHADING CORRECTION METHOD, AND IMAGE FORMING APPARATUS  
An image reading device includes: a light source irradiating a reading target with light; an image sensor receiving incoming reflection light from the reading target and reading the reading...
US20100290093 IMAGE READING DEVICE AND IMAGE FORMING APPARATUS  
The image reading device includes: a reading unit that includes a light source emitting light to irradiate an image on a recording medium transported in a first direction and a light receiving...
US20100245936 IMAGE PROCESSING APPARATUS, IMAGE PROCESSING METHOD, AND PROGRAM  
An image processing apparatus that performs shading correction processing with the use of white reference data is provided. The image processing apparatus includes a source data acquisition unit...
US20100214626 EXPOSURE DEVICE, IMAGE FORMING APPARATUS, EXPOSURE CONTROL METHOD AND COMPUTER-READABLE MEDIUM  
An exposure device includes a plurality of light-emitting elements, a lighting driver, a first storage, a reader, a shading correction unit and a second storage. The lighting driver drives and...
US20100202027 IMAGE READING APPARATUS  
A method is provided for processing image data read from a book document placed on a platen of an image reading apparatus. The method includes determining a background pixel of the image data...
US20100182652 IMAGE READING APPARATUS, BLACK CORRECTION EXECUTING METHOD, AND A COMPUTER-READABLE MEDIUM STORING BLACK CORRECTION EXECUTING PROGRAM  
The present invention provides an image reading apparatus that includes: a photoelectric sensor including plural reading pixels aligned in one direction and output an electric signal depending on...
US20100177360 SHADING CORRECTION APPARATUS IN IMAGE SCANNING APPARATUS  
A shading correction apparatus includes: a light irradiating unit configured to scan an original document; a reference plate located in a scanning area of the light irradiating unit; a detecting...
US20100103474 IMAGE READING METHOD, IMAGE READING APPARATUS, AND PROGRAM RECORDING MEDIUM  
A method for image processing in which an image of a bound document such as a book placed face-down on a document positioning plate is read and processed is provided. The method includes reading...
US20070165257 Image processing method, image processing apparatus, image forming apparatus and recording medium  
An image processing apparatus comprising reading means for reading document images; extracting means for extracting the characteristic amounts representing the characteristics of color information...
US20170180603 IMAGE READING DEVICE AND IMAGE FORMING APPARATUS INCORPORATING THE IMAGE READING DEVICE  
An image reading device, which may be incorporated in an image forming apparatus, includes an image reader, a color reference body, a biasing body, a reading gap forming device, and a driving...
US20170155796 IMAGE READING SYSTEM CONFIGURED TO DETECT DOCUMENT EDGE  
An image reading system includes a reading device, a first calibration unit, and a detection unit. The reading device is configured to read a white reference member to acquire white image data and...

Matches 1 - 50 out of 84 1 2 >