Abstract: There is provided an image processing apparatus including an operation display unit for displaying an image on a display screen and capable of an operation input on the image displayed on the display screen, an operation input detection unit for detecting an operation input in the operation display unit, an approximate straight line derivation unit for deriving first approximate straight line approximately indicating a trajectory of the operation input based on the detection result in the operation input detection unit, and an image correction unit for correcting a tilt of the image displayed on the display screen based on the derived first approximate straight line and a predetermined reference line.

Abstract: An image forming apparatus calculates a positional deviation in the main and sub-scanning directions for each color by forming registration patterns in two arrays along a sub-scanning direction on an image carrier. Each registration pattern in one array is paired with an identical registration pattern in the other array. A first sensor has: a light-emitting element irradiating one registration pattern in a pair; a photodetector for regular reflection light; and a photodetector for diffuse reflection light. A second sensor has: a light-emitting element irradiating the other one in the pair; and a photodetector for regular reflection light. The relative positions of a pair of registration patters calculated using the respective sensors are corrected so as to reduce the positional deviation between the calculated positions by the amount of offset deviation estimated occur between positions detected by the respective sensors when the registration patterns are without positional deviation.

Abstract: According to one embodiment, an image reading apparatus includes an illumination unit to irradiate a sheet that is conveyed by a conveyance unit with visible light and infrared light, an imaging unit to receive visible light and infrared light reflected from the sheet and to capture a visible image and an infrared image, and a background member including an infrared light low reflective part that is positioned within an imaging range of the imaging unit so as to overlap at least a side edge portion of the sheet and that diffusely reflects visible light and reflects infrared light at a lower reflectance than the sheet.

Abstract: Methods, devices, and systems for capturing documents are provided. A frame in a viewfinder is selected and is converted into a binary version. Segmentation of the binarized version of the frame is performed using computed horizontal and vertical histograms. At least one document is identified in the selected frame. The at least one document is captured upon determining that values of the one or more parameters associated with the document match predetermined values of corresponding one or more parameters.

Abstract: A document scanner (10) includes an input tray (20) for holding documents (11). An input image capture device (30) captures at least a portion of the images of documents in the input tray. An image processor (65) determines characteristics of documents in the input tray, and the documents are processed based on the characteristics. At least one characteristic is document length (70), or width (80), or position (170), or other characteristics. An ultrasonic zone (160) detects the documents; and the ultrasonic zones are enabled or disabled in at least one location down the document based on at least one characteristic.

Abstract: Systems and methods for edge detection during an imaging operation are disclosed. In an exemplary implementation, a method may include subdividing an imaging area into a plurality of border detection zones. The method may also include scanning the imaging area including media to be scanned to obtain optical data for each of the plurality of border detection zones. The method may also include identifying at least one edge of the media based on change in the optical data between directly adjacent border detection zones, where the change indicates detection of a moiré pattern.

Abstract: A sheet conveyance device is capable of detecting a sheet length in a conveyance direction correctly, and of detecting a length of a non-standard size sheet correctly. A detection unit detects front and rear ends of a sheet conveyed with a conveyance unit. A measurement unit measures sheet length in a conveyance direction based on a detection result of the detection unit. An acquisition unit acquires a reference length of the sheet. A computation unit computes a correction value that is used to correct a length measured by the measurement unit based on length measured and the reference length acquired in a correction mode. A storage unit stores the correction value computed. A determination unit determines sheet length corrected based on the correction value and the length measured at the time of conveyance of a sheet in a mode other than correction mode.

Abstract: In a sheet conveying device, a first sensing portion is configured to output a first sense signal when a sheet is absent at a first sensing position determined in advance on a sheet placement portion, and output a second sense signal when the sheet is present at the first sensing position. A second sensing portion is configured to output the second sense signal when the sheet is absent at a second sensing position separated from the first sensing position in a width direction perpendicular to a conveying direction of the sheet, and output the first sense signal when the sheet is present at the second sensing position. A sensing control portion is configured to sense a plurality of states in accordance with a combination of the first sense signal and the second sense signal.

Abstract: An image reading device includes a reading unit provided with an image sensor and configured to read a manuscript placed on a contact glass, a manuscript sensor whose output level varies depending on whether the manuscript is detected, and a moving mechanism configured to move the manuscript sensor from a predetermined reference position in an oblique direction with respect to a main scanning direction and a sub scanning direction such that a detection zone of the manuscript sensor passes through a side of the manuscript parallel to the sub scanning direction and a side of the manuscript parallel to the main scanning direction. A recognizing unit is also included that is configured to recognize lengths in the main scanning direction and the sub scanning direction of the manuscript, based on a displacement of the manuscript sensor from the reference position.

Abstract: In an image reading device, an opposing member opposes an image reading unit. The opposing member has a first part and a second part. A moving unit moves the image reading unit between first and second read positions. An image value generated by reading an image of the first part at the first read position is different from an image value generated by reading an image of the second part at the second read position. The control device is configured to: set a read position to selected one of the first read position and the second read position; control the moving unit to move the image reading unit to the read position; and determine that an edge of the original sheet reaches the reading region when image values generated by the image reading unit are changed while the conveying unit conveys the original sheet along the conveying path.

Abstract: There is provided a document, wherein a measurement image for measuring a position of an image relative to a document is formed on a first surface thereof, a designation image for designating a document position, at which the document is placed on an image reading apparatus that reads an image, is formed on a second surface thereof, and wherein the document is spaced from an end portion of a reading region of the image reading apparatus by placing the document in accordance with the designation of the designation image, and the designation image is formed such that the measurement image is placed in the reading region of the image reading apparatus.

Abstract: An image scanning apparatus and method are provided. The image scanning apparatus includes a scanner that scans a manuscript to generate a scan image, an image processor that calculates a manuscript boundary on the generated scan image as an equation and compensates a distortion of the scan image using the calculated equation, and a storage member that stores the scan image of which the distortion has been compensated.

Abstract: A reading device comprising a connection unit configured to be connected with a storage medium, a determination unit configured to determine whether or not the storage medium is connected to the connection unit, a judging unit configured to judge if there is a document to be read by a reading unit and an execution unit configured to execute the advising process when the judgment unit judges that there is the document to be read and the determination unit determines that the storage medium is connected to the connection unit.

Abstract: An image-reading device images each page of a book as a basic image and cuts out a predetermined area of the basic image. The device includes an initial-parameter specification unit, a final-parameter specification unit, a determination unit and a correction unit. The initial-parameter specification unit specifies a parameter for the predetermined area of a page around beginning of turning pages. The final-parameter specification unit specifies a parameter for the predetermined area of a page around an end of turning pages. The determination unit determines a parameter for a certain page of the book on the basis of the parameters specified by the initial-parameter specification unit and the final-parameter specification unit. The correction unit corrects an image of the certain page on the basis of the parameter determined by the determination unit.

Abstract: A document reading unit included in an image forming apparatus and operated with a method of detecting an original document, includes an original document table, a moving irradiation unit having multiple block light sources moving in a sub scanning direction while irradiating the original document, an image sensor receiving reflected light, and a controller that starts a length specifying operation with the moving irradiation unit located at a position facing the original document, sequentially turns on the block light sources, obtains an amount of reflected light under lighting conditions of each block light sources, and determines the length of the original document in the main scanning direction. While the moving irradiation unit is moving in the sub scanning direction, the image sensor receives the reflected light on a region of the original document in the sub scanning direction under each lighting condition during the length specifying operation.

Abstract: In a method for scanning documents, in particular printed sheets of paper, and automatically controlling the further processing of the scanned documents, the following steps are carried out: manually applying at least one marking to a margin area of the document that is not printed on; scanning the document; automatically detecting the at least one marking applied to the margin area of the document; and automatically controlling the further processing of the document according to the marking applied in the margin area.

Abstract: Documents in a large-format scanning system are scanned by coarsely recognizing longitudinal or transverse transition regions between a reflector roller and a document by the substeps of dividing the scanning image transversely into uniform image strips, determining statistical parameters for each image strip, examining the scanning image in the image strips with fixed threshold values for deviations such that, if a value of one the statistical parameters of an image strip exceeds the threshold value, this region is recognized as being a transverse transition region between the reflector roller and the document, and examining the image strips to determine the longitudinal transition region by line-by-line generation of an average value and determining sufficiently strong and steep edges, the image strips being rotated incrementally from the transverse of the document to an acute angle.

Abstract: An image reading apparatus includes an apparatus body; a transport device that is openable and closable; an image reading unit disposed in one of the apparatus body and the transport device and reading an image of the document transported by the transport device; a member to be read that is disposed in the other of the apparatus body and the transport device at a position opposite the image reading unit when the transport device is closed, the member to be read being read by the image reading unit; and a control unit that causes the image reading unit to read the member to be read at a predetermined time, and if the transport device is open at the predetermined time, causes the image reading unit to read the member to be read when the document is transported by the transport device.

Abstract: An apparatus includes an acquisition unit and a controller. The acquisition unit is configured to, in a case of a recording medium having different thicknesses along a direction crossing a feeding direction in which the recording medium is fed by a feeding unit, acquire correction information that is set on the basis of an orientation of the recording medium in a case where the recording medium is fed by the feeding unit. The controller is configured to move a print start position of a print unit in the direction crossing the feeding direction on the basis of the correction information acquired by the acquisition unit.

Abstract: An image reading device includes a transporter transporting a document to a reading position, a first corrector correcting a skew of the document by coming into contact with a leading edge thereof, a radiating unit radiating light to the document, an image-information acquiring unit acquiring image information of the document based on information of light reflected therefrom, a reflector reflecting the radiated light, a leading-edge detector comparing a quantity of light reflected by the reflector with a quantity of light reflected by the document so as to detect the leading edge, a skew-amount calculator calculating a skew amount of the leading edge, and a second corrector correcting a skew of the image information based on the skew amount. The device switches between the skew correction by the first corrector and the skew correction by the second corrector based on document information, the skew amount, or user's selection.

Abstract: The reading device includes an image reading unit, a document feeder unit, a table document detection unit for detecting presence or absence of a document on the place-reading contact glass, a document set sensor for detecting setting of the document, a size detection unit for detecting a size of the document on the document tray, and an open/close detection unit for detecting open and close of the document feeder unit. In a determination necessary state in which setting of the document is not detected while an object on the document tray is detected, it is determined to execute feed reading, or to execute place reading, or to be disabled to confirm to execute the place reading or the feed reading, based on whether or not there is a document on the place-reading contact glass and based on history information.

Abstract: An image forming apparatus includes a high speed correction mode in which, at the time of a successive image forming process on a plurality of recording sheets, a preset number of recording sheets among the plurality of recording sheets are subjected to image formation based on a corrected image writing position, and other recording sheets are subjected to image formation based on the corrected image writing position; and a linear correction mode in which the plurality of recording sheets are subjected to image formation based on the corrected image writing position; and performs switching to either one of the high speed correction mode and the linear correction mode according to a correction amount ?b for a recording sheet detected at the time of image formation with respect to a correction amount ?a for the preset number of recording sheets.

Abstract: According to one embodiment, a document detecting apparatus includes a light-emitting element, a photoelectric conversion element, a light-emission controller and a detection processor. The light-emitting element projects light onto a detection position of a document. The light-emitting element is not used for reading an image of the document. The photoelectric conversion element converts light projected onto the detection position into an electric signal and outputs the electric signal. The light-emission controller changes the light quantity of the light emitted by the light-emitting element during a predetermined interval. The detection processor detects the presence or absence of the document at the detection position of the document based on whether a value of the output electric signal during the predetermined interval changes in correspondence to the change of the light quantity caused by the light-emission controller.

Abstract: An evaluation chart has test patterns, a first code mark, and a second code mark. The evaluation chart is electronically read at one time to obtain first code information that specifies measuring conditions for the evaluation chart and second code information that specifies image forming conditions for the evaluation chart. Quantized information of the test patterns that is measured under the measuring conditions is associated with the image forming conditions.

Abstract: A scanner for automatically detecting a scan target includes a transparent scan region configured to support the target, an image sensor including a light source for irradiating light toward the scan region and a light receiving element array for sensing the incident light through the scan region, a drive unit configured to linearly move the sensor across the scan region, and a control unit that controls the sensor and the drive unit. The control unit controls the light source of the sensor and the drive unit such that the sensor moves to a detection position and then the array senses the incident light through the scan region with the light source turned on and off. The control unit compares output signals of the array obtained by turning on and off the light source and automatically determines, based on the comparison, whether the target is placed in the scan region.

Abstract: An apparatus includes a determining unit configured to determine whether a malfunction of relative movement between a document and an image reading unit reading an image of the document occurs when the document is read by the image reading unit while at least one of the document and the image reading unit is moved, a specifying unit configured to specify a position in image data of the image read by the image reading unit corresponding to a position where the malfunction occurs if the determining unit determines that the malfunction of relative movement occurs, and a control unit configured to cause an image display unit to display an image based on the image data to enable a user to discriminate the position specified by the specifying unit.

Abstract: An image reading apparatus includes placement member, pressing member, and open/close detection portion. Open/close detection portion detects opening and closing of pressing member. Open/close detection portion includes movable portion, guide hole, and sensor. When pressing member is opened, movable portion moves toward one side, thereby protruding to an area between placement member and pressing member, and when pressing member is closed, movable portion moves toward the other side. Movable portion extends along movement direction thereof. Guide hole of movable portion guides movement of movable portion in movement direction. Movable portion has a plurality of groove portions extending in movement direction, and groove portions partially include guide groove. Guide hole has guide protrusion protruding from inner circumferential surface thereof toward groove portion of movable portion, so as to guide movement of movable portion.

Abstract: An image reading apparatus includes a carriage, a carriage detector, and a control unit. The carriage detector outputs a detection signal of the carriage when the carriage is at the home position, and outputs a non-detection signal of the carriage when the carriage is located closer to a document size reading position than a predetermined position between the home position and the document size reading position. The control unit moves the carriage to the home position when the image reading apparatus enters a sleep mode, keeps the carriage detained while performing initialization after the sleep mode is cancelled, and moves the carriage, upon receipt of a scanning instruction after the initialization is completed, toward the document size reading position in the case where the carriage detector outputs the detection signal of the carriage.

Abstract: Methods and devices are described for detecting boundaries of documents on flatbed and multi-function scanners on a first pass of a carriage assembly, and then performing a high resolution scan on a second pass. High resolution images of documents can then be obtained with little or no interaction normally necessary to identify areas of interest on the scanner bed. Patterns on the scanner cover or lid facilitate not only edge determination, but orientation of text and other objects, and straightening of images in preparation for OCR and related functions. Electronic images and files derived from paper documents may be automatically cropped, deskewed, subjected to OCR, and named consistent with content or other information derived from them.

Abstract: An image reading apparatus that includes an image reading portion, a tray, a first regulation member movable in a width direction on the tray, a second regulation member movable in association with the first regulation member, a first rotating portion and a second rotating portion that are each capable of being rotated by a sheet on the tray, and a sensor portion configured to generate a signal based on rotations of the first and second rotating portions. The first rotating portion is located between the first regulation member and the second regulation member that regulate both edges of a sheet having a minimum width, and the second rotating portion is located between the other edge of a sheet having a smaller width and the first regulation member, when sheets having different widths are supported on the tray with each having one edge aligned with the first regulation member.

Abstract: An image reading apparatus is disclosed. The image reading apparatus includes an automatic document feeding unit that transports a document in a predetermined direction while the document floats above a platen glass member and a light source disposed below the platen glass member that irradiates a portion on the document at a predetermined reading location such that reflected light from the portion on the document is converted into image data and a floating distance between the document and the platen glass member is detected to set a value of an image parameter for correcting the image data for the document, based on the detected floating distance between the document and the platen glass member.

Abstract: A sheet scanner comprises a sheet inlet on a front side, a scanned sheet outlet on a rear side, and a deflector to direct scanned sheets from the outlet towards the front side of the scanner, over the top cover thereof, and further comprises a stopper on the top cover, at the front side of the scanner and above the sheet inlet, to temporarily restrain the leading edge of a scanned sheet such that the sheet advances and folds over itself and beyond the stopper, the leading edge being released from the stopper when the sheet folded over itself and beyond the stopper pulls it downwards.

Abstract: A recording material transporting device includes a transport path along which a recording material is transported, a first transporting unit that includes a first rotating member and a second rotating member being arranged apart from each other in a direction crossing the transport path, the first transporting unit correcting skew of the recording material by rotating the first rotating member and the second rotating member in a different speed, and a second transporting unit that includes a third rotating member and a fourth rotating member being arranged apart from each other in the crossing direction, the second transporting unit correcting skew of the recording material by rotating the third rotating member and the fourth rotating member in a different speed, wherein the third rotating member and the fourth rotating member are arranged between the first rotating member and the second rotating member.

Abstract: Standard positional information is acquired about a plurality of regions of interest to be quantified, which are designated in a standard image region. An image magnification which represents a size ratio of measurement image region represented by the image data to the standard image region is calculated. Positional information of a plurality of regions of interest depending on the measurement image region is calculated based on the acquired standard positional information and the calculated image magnification.

Abstract: A document size detector sets an amount of light to be emitted from a light source for document size detection in accordance with the amount of disturbance light detected by the CCD, switches on the light source so as to make the light source emit the set amount of light, and detects the size of a document placed on a platen. Therefore, erroneous detection of a document size is prevented and glare that a user is subjected to when the size of a document placed on the platen is detected is reduced.

Abstract: An image processing apparatus is provided, which makes it possible to classify and store documents after scanning the documents by intuitive operations such as physically classifying the documents. The image processing apparatus according to the present invention includes an acquisition unit configured to acquire image data obtained by capturing an image of a document placed in an image capturing area; and a classification unit configured to classify the acquired image data according to at least one of a direction to which the document is framed-out from the image capturing area and a direction from which the document is framed-in to the image capturing area.

Abstract: An object area containing a text or a graphic is extracted from a document image containing the text or the graphic. Then, on the basis of the extracted object area and stored size information, a cropping area is determined that surrounds the object area with given margins. Further, setting of margins is received. Then, on the basis of the object area and the received setting of the margins, the cropping area is determined. Then, the cropping area determined on the basis of the object area and the size information or alternatively the cropping area determined on the basis of the object area and the setting of the margins is cropped from the document image.

Abstract: An image forming apparatus includes a user interface unit that includes a scan area, an image reading unit that reads an image of a scan object disposed on the scan area, a driving unit that moves the image reading unit, a control unit that controls a function according to a position of the scan object, an operation performing unit that performs the function by using the read image, and a storage unit that stores information about the function corresponding to the position of the scan object. The scan area includes a determination area and a function area, and when it is determined that the scan object does not exist on the determination area, the control unit controls the operation performing unit to perform the function corresponding to the position of the scan object on the function area.

Abstract: An image reading apparatus includes a control unit that is configured to suspend an operation of a separation-feeding unit in a feeding operation when the control unit determines, based on a signal from a leading edge detecting unit, that an inclined amount of the leading edge of a fed document is larger than a setting value. The control unit is also configured to set, when a mixture of different widths is set to the setting unit, the setting value larger in comparison to a case where a mixture of different widths is not set.

Abstract: An image forming apparatus includes a resolution converting unit, an address generating unit, a density determining unit, and an image path selector. The resolution converting unit converts a resolution of image data into a higher resolution. The address generating unit performs a position determining process of determining a position of an additional pixel on the basis of main-scanning directional positions of pixels composing the converted image data and respective shift amounts of the pixels shifted to a sub-scanning direction. The density determining unit determines a density of the additional pixel on the basis of a density of a pixel located at a position corresponding to the determined position in the image data. The image path selector scales the image data up or down by controlling the address generating unit while adding the additional pixel having the determined density to the determined position.

Abstract: An image forming apparatus includes: an acquiring unit; a resolution converting unit; a receiving unit; a position determining unit; a correcting unit; and a scaling unit. The acquiring unit acquires image data composed of a plurality of pixels; the scaling-factor determining unit determines a scaling factor of the acquired image data; the resolution converting unit converts a resolution of the acquired image data into a higher resolution than the resolution of the image data; the receiving unit receives a designation of a sub-scanning directional shift amount of a correction pixel to be corrected; a position determining unit performs a position determining process; and the scaling unit scales the image data at the determined scaling factor by causing the position determining unit and the correcting unit.

Abstract: A sheet sensing module and a duplex scanning apparatus having the sheet sensing module are provided. The sheet sensing module includes a first sensing arm, a second sensing arm, and an electronic sensor. The first sensing arm is partially exposed to a sheet feeding channel of the duplex scanning apparatus. The second sensing arm is partially exposed to an inverting channel of the duplex scanning apparatus. When a document is transferred through the sheet feeding channel to trigger said first sensing arm or the document is transferred through the inverting channel to trigger the second sensing arm, the electronic sensor generates a sensing signal.

Abstract: Provided is an image information registration system including an image information acquisition unit that acquires image information appearing on a surface of a medium, a rotation angle information acquisition unit that acquires rotation angle information corresponding to a rotation angle of the medium with respect to a reading direction based on the image information, a retrieval information acquisition unit that acquires retrieval information including at least one item of attribute information and association system information that represents an association system which are correlated with the rotation angle information based on the rotation angle information, a target information acquisition unit that acquires one or plural items of target information stored in the association system identified by the association system information according to the retrieval information, and an image information registration unit that registers the image information according to the acquired one or plural items of target

Abstract: An overhead scanner successively obtains a plurality of images by controlling an area sensor, calculates a movement pattern by image difference extraction by using the obtained images, detects a page turning movement on the basis of the movement pattern, and determines that a read operation be started when the page turning movement is detected.

Abstract: An object of the present invention is to provide a scanning device, a scanning method, and a computer-readable medium capable of easily performing display of a scanner on a computer of a user and display for starting scanning operation. A scanning device include a controller for displaying a phantom folder corresponding to a usable scanner on a display unit only when the scanner can be used, and for starting scanning operation by the scanner when the phantom folder is selected, a receiver receiving scan data from the scanner, and a storage storing the scan data received.

Abstract: 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) provided at a portion different from a reading position (luminance-intensity-distribution-variation correction reading line 103b) for a document (P) while displacing an illumination unit (101), and shading correction is carried out based on a luminance value of reflection of the light. Light is radiated to the reading position before the document (P) is transported thereto while displacing the illumination unit (101) in the same direction as a displacement direction of the illumination unit (101) at a time of performing shading correction. The luminance value of the reflected light at this time is compared with the luminance value after the shading correction to generate luminance-value reference data before the reading of the document.

Abstract: An image reading apparatus includes a reader unit configured to read an image of a conveyed document at a reading position, a transparent member arranged at the reading position and including a conductive layer, which is earthed, on a surface of the transparent member, a conveyance unit configured to convey the document to the reading position, and a guide member that is earthed, provided along the surface of the transparent member, and positioned so as to intersect with a conveyance direction of the document conveyed by the conveyance unit.

Abstract: An image reading device starts executing a reading process before a sheet reaches a reading position, and executes the reading process subsequently and repeatedly. A partial image is acquired each time the reading process is executed. Each time one partial image is acquired, the image reading device determines a number of pixels awarded to the one partial image; and determines an intensity awarded to the one partial image. The image reading device decides that at least one of the two successively-acquired partial images corresponds to an end of the sheet when the two partial images satisfy the conditions (A) and (B). Condition (A): the determined number of pixels is changed between the two successively-acquired partial images. Condition (B): the determined intensity is changed between the two successively-acquired partial images.

Abstract: An object of the present invention is to provide a scanning device, a scanning method, and a computer-readable medium capable of easily performing display of a scanner on a computer of a user and display for starting scanning operation. A scanning device include a controller for displaying a phantom folder corresponding to a usable scanner on a display unit only when the scanner can be used, and for starting scanning operation by the scanner when the phantom folder is selected, a receiver receiving scan data from the scanner, and a storage storing the scan data received.

Abstract: A light-source driving device includes a driving unit configured to drive a light source unit that emits light onto an object; and a driving control unit configured to control the driving unit to drive the light source unit in a first driving mode and a second driving mode. A light emission time of the light source unit is controlled in the first driving mode. An instantaneous value of a quantity of light of the light source unit being controlled in the second driving mode.