A controller of an image reading device performs search for an edge candidate position inward from an edge portion in a main scanning direction of analysis image data in an extraction process of extracting a document region from read image data. When the retrieved edge candidate position corresponds to a dirt position, the search is continued whereas when the retrieved edge candidate position does not correspond to the dirt position, the document region is extracted from the read image data at the retrieved edge candidate position.

A dual-axle linkage detection structure includes a first object, a second object, a sensor body, and a shielding element. The first object is movably connected to a base. The second object is movably connected to the first object. The sensor body is disposed on the first object and includes detecting positions. The shielding element includes a shielding part. When the second object covers the first object and the first object covers the base, the shielding part moves into the detecting position. When the second object moves away from the first object, or when the first object moves away from the base and drives the shielding element to rotate, the shielding part moves out of the detecting position.

The present disclosure discloses methods and systems for managing multiple scan requests received at a multi-function device. The method includes receiving a scan request from a remote computing device of a remote user. Before executing the scan request, two conditions are checked. It is checked if document is present on a scanning platform of the multi-function device and further it is checked if one or more activities on a user interface of the multi-function device, are being performed. Based on the presence of the document on the scanning platform and the one or more activities on the user interface, the scan request received from the remote user is disallowed. This way, multiple scanned requests are managed at the multi-function device.

A method for generating a 3D image includes driving structured light projector(s) to project a pattern of light on an intraoral 3D surface, and driving camera(s) to capture images, each image including at least a portion of the projected pattern, each one of the camera(s) comprising an array of pixels. A processor compares a series of images captured by each camera and determines which of the portions of the projected pattern can be tracked across the images. The processor constructs a three-dimensional model of the intraoral three-dimensional surface based at least in part on the comparison of the series of images. Other embodiments are also described.

An image reading apparatus includes a light source to emit at least light in a first wavelength range and light in a second wavelength range, a background member having different light reflectances in the first and second wavelength ranges, an imaging device, and circuitry. The imaging device receives reflected light from the background member irradiated with the light in the first wavelength range, and generates first read information. The imaging device further receives reflected light from the background member irradiated with the light in the second wavelength range, and generates second read information. The circuitry detects presence or absence of a first foreign substance based on a difference in reading level of the first read information generated by the imaging device; and detect presence or absence of a second foreign substance based on a difference in reading level of the second read information generated by the imaging device.

There is provided an information processing apparatus configured to obtain criterion data, which is reference image data, by executing a adjustment parameter determining program, obtain evaluation data which is image data scanned by a scanner, generate a plurality of pieces of comparison data by adjusting the evaluating data using a plurality of adjustment parameters different from each other, respectively, associate each comparison data with an adjustment parameter used to generate the comparison data, and display the criterion data and the plurality of pieces of comparison data in a list. When a selecting operation of selecting one from the plurality of pieces of comparison data is performed, the information processing apparatus determines an adjustment parameter for the scanner based on the adjustment parameter associated with the selected comparison data.

An image outputting device includes a scanning module, a storage module, an identification module, a calibration module and a printing module. The scanning module generates an image by scanning an object. The storage module stores the image. The identification module identifies a layout orientation and a text orientation of the image. The calibration module calibrates the layout orientation and the text orientation of the image according to a relation of an identification result of the identification module and a layout orientation of the printing medium. When the printing module prints the calibrated image on a printing surface of the printing medium and outputs the printing medium with the printing surface facing downwardly, the layout orientation of the printed image matches with the layout orientation of the printing medium, and the text orientation of the printed image is opposite to an medium outputting direction or arranged from proximal to distal.

An inspection system includes: an inspection part that compares a scanned image obtained by scanning a sheet on which an image is formed on the basis of a job with a reference image prepared in advance and thereby performs inspection of the scanned image; and a hardware processor that sets an inspection target page to be a target of inspection and a non-inspection target page to be excluded from inspection, for the job, wherein the hardware processor causes the inspection part to perform inspection for the inspection target page and not to perform inspection for the non-inspection target page on the basis of the setting of the hardware processor, and the hardware processor creates an inspection report including scanned images of all pages of the job including the non-inspection target page.

An image reading apparatus includes an original tray on which an original is to be stacked; a conveyance unit configured to convey the original stacked on the original tray; a reading unit including a reading sensor having a light receiving element to receive light of a first color and a light receiving element to receive light of a second color that is different from the first color, wherein the reading unit is configured to read an image of the original conveyed by the conveyance unit by using the reading sensor to generate image data which represents a reading result of the reading unit; at least one processor configured to: determine a first abnormal position which is a position in a first direction of an abnormal pixel of the first color in the image represented by the image data, wherein, in the image represented by the image data.

There is provided an information processing apparatus. The information processing apparatus acquires image data of a document read via a scanner; detects a streak included in the image data acquired by the acquisition unit by using a parameter for detection processing of detecting a streak; transmits the image data, the parameter, and a detection result obtained by the detection unit to an external apparatus; and changes the parameter used by the detection unit upon reception of a change in the parameter from the external apparatus.