Abstract: The present disclosure provides a stitching quality evaluation method and system, and a redundancy reduction method and system for low-altitude UAV remote sensing images, and belongs to the technical field of image processing. The method comprises: firstly acquiring ground images using a UAV under a preset overlap degree to obtain a low-altitude UAV remote sensing image set, then stitching the low-altitude UAV remote sensing image set to obtain a stitched image, and finally performing a quality evaluation on the stitched image using an improved BRISQUE algorithm to obtain an image quality score, which is applicable to quality evaluation of visible images and multispectral images at the same time through the improved BRISQUE algorithm. In addition, the present disclosure further provides an image redundancy reduction method based on the improved BRISQUE algorithm, thereby improving the image stitching efficiency and stitching quality.

Abstract: When a medium detector detects that a state where a medium is absent is switched to a state where the medium is present with a light quantity of the medium detector set to a first light quantity, a controller in an image reading apparatus switches the light quantity from the first light quantity to a second light quantity, which is larger than the first light quantity. When a quantity of the light received by the medium detector exceeds a threshold, the controller determines whether the media overlaps each other, based on the detection result of the multi-feed detector. When the quantity of the light received does not exceed the threshold, the controller skips the determination of whether the media overlaps each other.

Abstract: An image reading device includes a first reading device, a second reading device, and circuitry. The first reading device reads an image of one surface of a document. The second reading device reads an image of other surface of the document. The circuitry detects a first skew angle of skew in the read image of the one surface, performs skew correction on the image of the one surface based on the first skew angle, and forms a second skew angle for the image of the other surface. The second skew angle corresponds to reverse of the first skew angle. The circuitry further performs the skew correction on the image of the other surface based on the second skew angle, and outputs at least one of the image of the one surface subjected to the skew correction and the image of the other surface subjected to the skew correction.

Abstract: There is disclosed an apparatus and method of aligning content put through a duplex scanner. By performing operations on data extracted from physical documents, digital documents that would otherwise appear skewed can be un-skewed. The process compares two images, e.g. a front and a back page for a document, and determines how they are offset from one another. The process uses a projection profile error minimization technique to calculate a translation for one or both pages to digitally align the margins for a digital document such that the margins match.

Abstract: According to one embodiment, an image forming apparatus includes a conveyance mechanism, a scanner, a buffer memory, a passage sensor, and a controller. The conveyance mechanism conveys a document along a conveyance path. The scanner reads an image on the document at a reading position along the conveyance path and generates image signals corresponding to the image that is read. The buffer memory stores image data corresponding to the image signals. The passage sensor is on the conveyance path upstream of the reading position. The controller determines whether to output the image data from the buffer memory after a sheet passage prediction time elapses based on the length of time required during a normal operation for the trailing edge of the document to reach the reading position.

Abstract: A post-processing apparatus includes a cutting device, one or both of an inclination detector and a side-edge detector, an inclination corrector and a hardware processor. The cutting device cuts a sheet along one or both of a feed direction in which the sheet is conveyed and a cross direction perpendicular to the feed direction. The inclination detector detects a front edge of the sheet in the feed direction at multiple positions in the cross direction. The side-edge detector detects a position of a side edge of the sheet in the cross direction. The inclination corrector performs an inclination correction operation of correcting an inclination of the sheet. The hardware processor causes the cutting device to cut the sheet after causing the inclination corrector to perform the inclination correction operation for an amount of the inclination based on the detection by the inclination detector or the detection by the side-edge detector.

Abstract: An imaging method for a virtual reality device, and a virtual reality device are provided. The method comprises: acquiring an image; calculating the radius of a minimum inscribed circle of the image; calculating a distortion ratio at the minimum inscribed circle according to the radius and a selected distortion formula; enlarging the image by using the calculated distortion ratio as an enlargement ratio; distorting the enlarged image according to the distortion formula; and outputting the distortion processed image to a screen for displaying.

Abstract: A method of estimating a virtual contour of an insulating material is disclosed. The method includes the following steps: obtaining a first and a second images at a pair of diagonal locations of the insulating material respectively; determining a first and a second corner locations from the first and the second images respectively; selecting a first set of longitudinal end-point positions and a first set of transverse end-point positions within a range between a first specific distance and a second specific distance from the first corner location; selecting a second set of longitudinal end-point positions and a second set of transverse end-point positions within a range between the first specific distance and the second specific distance from the second corner location; and determining a first transverse axis direction, a first longitudinal axis direction, a second transverse axis direction and a second longitudinal axis direction based on these positions.

Abstract: A reading device including a reader, a position reference member, and circuitry. The position reference member has a reference pattern along a first direction of the position reference member. The circuitry is configured to detect the reference pattern of the position reference member; determine coordinates of at least two pixels in the second direction, based on the detected reference pattern; calculate a first correction value based on the coordinates determined for the at least two pixels of the reader in the second direction; detect an outer shape and a position of an image pattern on the conveyed object based on data read by the reader; obtain a difference between an image of the conveyed object, of which a shape has been corrected, and an image of the conveyed object, of which a shape has not been correction; and set a second correction value based on the obtained difference.

Abstract: An image reading apparatus includes a document reading device, an operation device, and a control device. The document reading device collectively reads a plurality of documents loaded on a document loading surface to generate image data. The control device functions as an individual image cutter, an operation receiver, and a generator. The individual image cutter cuts, from the image data generated by the document reading device, individual images independent for the respective documents. The operation receiver receives, via the operation device, a first instruction indicating a number of documents collected in one image. The generator generates document image data which is corresponding to an image of a size formable on a single recording medium and which has a collection of pieces of individual image data indicating the individual images, in unit of the number indicated by the first instruction.

Abstract: An image reading apparatus includes a main body, a document pressing plate, and a light shielding portion. The main body has an image obtaining portion which irradiates illumination light on a document placed on a contact glass and captures an image formed on the document. The document pressing plate is attached to the main body in such a way as to pivot around a pivot shaft that is provided on a rear side above an upper surface of the main body. The pivot shaft moves in an up-down direction with respect to the main body. The light shielding portion, when the document pressing plate presses downward the document, extends downward from the document pressing plate with increase of an interval between the document pressing plate and the upper surface on the rear side in the up-down direction, so as to shield the illumination light not to leak outside.

Abstract: An image reading apparatus includes a plurality of conveyance mechanisms for clamping and conveying a medium, an imaging device for generating an input image in which a medium is imaged, a storage device for storing relative positions of the plurality of conveyance mechanisms with respect to an imaging position of the imaging device, and a processor for dividing the input image into a plurality of regions according to a number of conveyance mechanisms clamping a medium when each pixel in the input image is photographed, based on the relative positions, and setting a reliability level to each divided region in such a way that the reliability level increases as the number of conveyance mechanisms related to each region divided increases, and executing image processing on the input image based on at least a region the reliability level of which is greater than or equal to a threshold value.

Abstract: An image processing apparatus including: a document table on which at least one document is arrangeable; an image input unit reading the document arranged on the document table; an individual image extractor extracting image data read by the image input unit on a document basis to obtain image data of an individual image; a storage storing association information between an arrangement status of the document with respect to the document table and a reading surface of the document to be read by the image input unit; an arrangement status determiner determining the arrangement status of the document with respect to the document table on the basis of the image data of the individual image; and a reading surface determiner determining the reading surface of the document read by the image input unit on the basis of the association information and the arrangement status determined by the arrangement status determiner.

Abstract: An image forming apparatus has an image reading portion generating document image data, a job execution portion executing a job based on the document image data, a control portion controlling the job execution portion, and a storage portion storing a registered signature image. The control portion determines the degree of match between a document signature image present in the document image data and the registered signature image. The control portion permits execution of the job when the degree of match is equal to or higher than a first threshold value and inhibits execution of the job when the degree of match is lower than the first threshold value.

Abstract: A series of frames or live images received by a camera can be processed by an automatic image capture system to determine when an automatic image capture should take place. The system can detect when a scene change occurs by comparison of data for two or more frames, and for particular regions in those frames. If a scene change for the specified region is followed by a stabilization of the scene in that region, the system can trigger an auto-capture of at least the stabilized region of the scene, without the need for any user input.

Abstract: An image processing apparatus includes at least one processor operatively coupled to a memory, serving as an obtaining unit configured to obtain a contrast material-enhanced image of an object, a first region extraction unit configured to extract a first region representing a first anatomical portion of the object from the image, with the first anatomical portion in the object being contrast material-enhanced, and an estimation unit configured to estimate a phase of the image based on a comparison result between a feature amount concerning a gray level in the first region and statistical data concerning a gray level in a plurality of phases of the first anatomical portion.

Abstract: An information processing apparatus capable of displaying an image on a predetermined display unit, includes: a reception unit that receives a written input on an image according to an operation of a user in a state where the image is displayed on the display unit; a generation unit that generates a written object according to the written input received by the reception unit; a reference detection unit that detects a reference direction of the image displayed on the display unit; a correction unit that corrects the written object on the basis of the reference direction detected by the reference detection unit; and a display control unit that displays the written object generated by the generation unit.

Abstract: A document reading apparatus includes a scanner, an input device receiving an input of a width and length, and a processor configured to scan an area specified based on the input length and generate a first image, generate a second image by removing a part of the first image so that a width of the second image is equal to or greater than the input width, detect a background or non-background area in the second image, determine whether the input is appropriate based on whether all sides of an area specified based on the input width and length overlap the background area or none of the sides overlaps the non-background area on the second image, and when the input is appropriate, output a third image in which the background area is removed or the non-background area is extracted from the second image.

Abstract: A clip region recognition section recognizes clip regions from a read image. An inclination detection section detects an inclination of each of the clip regions. When the clip regions exist in number between P and Q, inclusive, a first processing control section executes a first clip processing. When the number is under P and over Q, a second processing control section executes a second clip processing. In the first clip processing, processing that an inclination correction section rotates the image according to the inclination of one of the clip regions and that a clip processing section cuts out the clip region is performed on each clip region. In the second clip processing, a clip region selection section selects one of the clip regions, the inclination correction section rotates the image according to the inclination of the selected clip region, and the clip processing section cuts out all the clip regions.

Abstract: Techniques for creating and manipulating software notes representative of physical notes are described. A computing device includes a processor, an image collection module executable by the processor and configured to receive an input image of an environment having a plurality of overlapping physical notes, and an image processing engine executable by the processor and configured to process the input image with the computing device to identify the plurality of overlapping physical notes in the input image. The image processing engine determines a boundary of each note in the plurality of overlapping physical notes in the input image, and generates a plurality of digital notes corresponding to the determined boundary of each of the overlapping physical notes identified in the input image.

Abstract: A camera system and an image-providing method are disclosed to overcome that conventional cameras cannot make a decision by themselves as for whether and/or how to capture images. The disclosed camera system includes a camera for capturing images and a computer device used to calculate an estimated camera location and pose for the camera. The camera system also includes a location adjusting device and a pose adjusting device to adjust the camera to the estimated camera location and pose.

Abstract: An image forming apparatus includes an operation acceptance section, a storage section, a sheet feed cassette, a plurality of trays, a sorting mechanism, a scanner, a data analyzing section, and a control section. The scanner scans an image of a sheet. The data analyzing section analyzes image data of the sheet scanned by the scanner. When the operation acceptance section accepts a specification of a sorting condition from a user, the control section allows the storage section to store the sorting condition and allows the sorting mechanism to sort the sheet to one of the trays according to the sorting condition using an analysis result of the data analyzing section.

Abstract: A processor randomly selects a page image group corresponding to a predetermined number of pages, such as five pages, from scan images of all the pages of a book, and clips a predetermined area (evaluation area) from each of the selected page images. Subsequently, the processor performs, on each clipped image, color correction and compression at a compression rate in accordance with an image quality specified via a user interface, and derives the data volume of each clipped image subjected to the processing. In addition, based on the data volumes of the clipped images subjected to the processing, the processor derives estimated one page data volumes. Then, by using the estimated one page data volumes, the processor derives an estimated data volume of a digital book corresponding to the total pages of the book.

Abstract: An image scanning apparatus captures multiple images of an object corresponding to different heights at each scanning position, analyzes the resolutions of the multiple images to choose one best partial image, and combines the partial images at different scanning positions to produce a scanned image of the object, so as to improve the resolution of the scanned image.

Abstract: A scanner comprising a platen, a first laser assembly movable along a first axis, a second laser assembly movable along a second axis substantially orthogonal to the first axis, and laser movement controllers configured to control the movement of the laser assemblies along their axes. The laser assemblies comprise laser emitters configured to project laser lines on the platen that illustrate edges of the current scan area or delineate multiple scan areas, such that the dimensions and/or position of the scan area can be adjusted by moving the laser lines on the platen.

Abstract: In accordance with an embodiment, an image processing apparatus comprises a front surface reading section, a back surface reading section, a back surface image processing section and a front surface image processing section. The front surface reading section reads a range containing a front surface of a sheet. The back surface reading section reads a range containing a back surface of the sheet. The back surface image processing section detects a position of a sheet part in back surface image data based on the back surface image data obtained by reading the sheet back surface. The front surface image processing section extracts an image on the sheet part from front surface image data obtained by reading the sheet front surface based on the position of the sheet part in the back surface image data.

Abstract: A multifunctional printer comprising a liquid crystal layer mounted below a platen, with a light source positioned below the platen and liquid crystal layer. The multifunctional printer can display images using the liquid crystal layer and light source, such that the images are visible to users on the platen. The images can be deactivated and the platen made clear when users choose to scan documents placed on the platen. The images can include print previews, user interface components, and/or scan lines that indicate the boundaries of a scan area on the platen.

Abstract: A read sensor generates front side image information indicating an image on a front side of an object to be read, and front side measurement information indicating a line of an image in a main scanning direction on the front side of a correction chart. A read sensor generates back side image information indicating an image on a back side of the object to be read, and back side measurement information indicating a line of an image in the main scanning direction on the back side of the correction chart. The image correction device calculates an amount of misalignment of read positions based on the front side measurement information and the back side measurement information, and corrects misalignment of images on the front side and the back side of the object to be read, indicated by the front side image information and the back side image information.

Abstract: An image processing apparatus includes at least one processor operatively coupled to a memory, serving as an obtaining unit configured to obtain a contrast material-enhanced image of an object, a first region extraction unit configured to extract a first region representing a first anatomical portion of the object from the image, an estimation unit configured to estimate a state of the image concerning a temporal change in gray level from the first region, and a second region extraction unit configured to extract a second region representing a second anatomical portion of the object from the image based on an estimation result obtained by the estimation unit.

Abstract: Certain embodiments provide a document detecting device, including: a plate having an upper surface on which a document is placed; an imaging device that includes the upper surface in a photographing visual field range; and a controller that detects any one or more of a position, an angle, and a size of the document on the upper surface according to an image by the imaging device and fixed-size information of the document stored in advance.

Abstract: When an image on an original document placed on the original document table is scanned, a scanning device is moved along the original document table, starting from a first position, while an image on the original document fed by the automatic document feeder is scanned, the scanning device located at a second position. When an original document sensor detects the original document at a particular position in the automatic document feeder, the scanning device is moved to the second position, while when the original document sensor does not detect the original document at the particular position after scanning of the original document placed on the original document table has completed and before the scanning device is returned to the first position, the scanning device is located at the first position, on condition that the controller executes the first scanning process and a continuous scanning mode is effected.

Abstract: An image forming method is for forming an image using an electrostatic latent image that is formed by exposing a surface of an image bearer in accordance with an image pattern that includes a plurality of image areas in combination. Each of the plurality of image areas includes a plurality of pixels. A part of pixels to be exposed in each of the plurality of image areas is set as a non-exposure pixel group in accordance with a position of any one of the plurality of image areas in the image pattern. Pixels that are different from the non-exposure pixel group in each of the plurality of image areas are set as a high-output exposure pixel group that is exposed with an optical output value that is higher than a predetermined optical output value that is needed to expose the image area.

Abstract: A scanner comprising a platen, a first laser assembly movable along a first axis, a second laser assembly movable along a second axis substantially orthogonal to the first axis, and laser movement controllers configured to control the movement of the laser assemblies along their axes. The laser assemblies comprise laser emitters configured to project laser lines on the platen that illustrate edges the current scan area, such that the dimensions and/or position of the scan area can be adjusted by moving the laser lines on the platen.

Abstract: A document backing extending in a plane is resiliently biased in a direction substantially parallel to the plane.

Abstract: A sheet feeding device that performs sheet feeding by feeding out and cutting a continuous medium includes a carrying part that carries the medium, a detection part that detects a leading edge of the medium and a length over which the medium has been carried, a trailing edge detection part that detects a trailing edge of the medium specified by a user; and a cutting part arranged between the detection part and the trailing edge detection part, and is capable of cutting the medium or forming cuts in the medium (a perforation process). When a minimum length of the medium that is carried by the carrying part is L2, a length from the detection part to the trailing edge detection part is L3, and a length of the medium that is specified by the user is L4, when the trailing edge of the medium is detected, and when L4<L3<L2+L4 is satisfied, the detection part detects a position is L4, and the cutting part forms cuts in the medium at the position.

Abstract: An image reading device includes a reading member that reads an image of a document at a reading position that is set in a transport path of the document, a skew detector that detects an amount of skew of the document with respect to a transport direction of the document, a distortion detector that detects an amount of distortion in the document that has been read, the amount of distortion being a deviation, from a right angle, of an angle formed by a direction transverse to the transport direction of the document with the transport direction of the document, and an image correcting unit that rotates the image that has been read, in accordance with an amount that cancels the amount of skew detected by the skew detector, and corrects distortion of the read image in accordance with an amount that cancels the amount of distortion.

Abstract: Methods for correcting distortions in an image including text, or an image of a page that includes text, are disclosed. The methods include identifying reliable and substantially straight lines from elements in the image. Vanishing points are determined from the lines. Parameters associated with a rectangle are determined. A coordinate conversion is performed.

Abstract: An open/closed sensing device includes an opening and closing member, a member that receives the opening and closing member when the opening and closing member is closed, at least one magnetic force holder on one of the opening and closing member and the receiving member and that includes a conductive holding frame and a magnet held in the holding frame so as to magnetize the holding frame, a conductive to-be-attracted member that is disposed on a portion of the other one of the opening and closing member and the receiving member, the portion corresponding to the magnetic force holder, and to which the holding frame is attracted when the opening and closing member is closed, and a sensing circuit that connects in series the holding frame and the to-be-attracted member and that electrically senses whether the holding frame and the to-be-attracted member are in contact with each other.

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: A scanner is disclosed. The scanner has a platen with at least one edge of the platen uncovered.

Abstract: A document scanner (10) includes an input tray (30) for holding documents (20) and an input image capture device (40) for capturing images of the documents (20) in the input tray (30) prior to transporting the document for imaging; an output tray (150) for holding documents (20) after the documents (20) exit the scanner; an output image capture device (140) for capturing images of the output tray; an image processor for determining characteristics of the output tray or characteristic of the documents (20) before imaging and after the documents (20) exit the scanner; and scanner functions are modified based on the output tray characteristics or the document characteristics.

Abstract: A system for verifying accuracy of a raster scanned image of a document (20) includes an input tray (30) that holds documents prior to imaging; an input imaging device (40) that captures an image of a document in the input tray; transmitting the captured input tray image to an image processor (100); transporting the document through a document scanner (10); a raster capture device for capturing a raster scanned image of the document with; transmitting the raster scanned image to the image processor; and verifying the accuracy of the raster scanned image by comparing the raster scanned image of the document to the input tray image of the document.

Abstract: Embodiments of printer optical sensing error determination are disclosed.

Abstract: A first control section controls the several image forming sections to form first patterns including a first straight line and a second straight line inclined to a first angle against the first straight line. A first adjustment section adjusts an operating condition of the one or more sub-forming sections to minimize the deviation of the image formation positions of the one or more sub-forming sections with respect to the image formation position by the main forming section. A second control section controls the several image forming sections to form second patterns including a third straight line and a fourth straight line inclined to a second angle larger than the first angle against the third straight line. A second adjustment section adjusts an operating condition of the one or more sub-forming sections to minimize the difference in the magnification between the main forming and the one or more sub-forming sections.

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: 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: 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: 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 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.