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.

The multifunction peripheral of the present invention includes an ADF document crop function. According to this ADF document crop function, front side image shaping processing for cutting out a front side document image corresponding to the image on the front side of a document, from a front side read image of the document and for correcting the tilt of the front side document image is performed. Then, on the basis of shaping information in the front side image shaping processing, back side image shaping processing for cutting out a back side document image from a back side read image of the document and for correcting the tilt of the back side document image is performed.

A reading device includes a light source, an image sensor, a background board, and an image processing circuitry. The light source irradiates visible light and invisible light to a subject. The image sensor receives the visible light and the invisible light, each of which is reflected from the subject, to capture a visible image and an invisible image. The background board is provided in an image capturing range of the image sensor. The background board is a background portion. The image processing circuitry detects a feature amount of the subject and the background portion from at least one of the visible image and the invisible image.

An image reading apparatus includes a conveyance unit and a reading unit. Based on read image data from the reading unit, a tilt amount of an edge of a document on a leading edge side in a conveyance direction in which the document is conveyed is decided. If the decided tilt amount exceeds a first threshold where a setting that performs document digitalization with respect to the image data, notification is given of information indicating that reading of the document for the document digitalization has failed. If the decided tilt amount is smaller than the first threshold, skew correction is executed for correcting the tilt amount based on the decided tilt amount with respect to the image data, and the document digitalization is executed with respect to the image data for which the skew correction has been executed.

The multifunction peripheral of the present invention includes an ADF document crop function. According to this ADF document crop function, front side image shaping processing for cutting out a front side document image corresponding to the image on the front side of a document, from a front side read image of the document and for correcting the tilt of the front side document image is performed. Then, on the basis of shaping information in the front side image shaping processing, back side image shaping processing for cutting out a back side document image from a back side read image of the document and for correcting the tilt of the back side document image is performed.

An image processing device and an amount-of-characteristic detecting method. The image processing apparatus includes a first image processing device to process an invisible image of an object, a second image processing device to process a visible image of the object, and a controller to control the first image processing device and the second image processing device. The first image processing device includes a first skew detector to detect a skew of the object from the invisible image of the object. The second image processing device includes a second skew detector to detect the skew from the visible image of the object, and circuitry to adjust the skew of the object based on a first result of skew detection performed by the first skew detector of the first image processing device or a second result of skew detection performed by the second skew detector of the second image processing device.

An image recording device comprises a conveyance mechanism, a head, a sensor configured to detect a position of an orthogonal edge of recording medium in a direction orthogonal to a conveyance direction, and a controller. The controller tentatively determines, for each of a plurality of unit areas aligned in the conveyance direction on the recording medium, a recording position of an image for the unit area based on image data and a size of the recording medium, derives a correction amount for the tentatively determined recording position, determines whether the correction amount exceeds a first upper limit for each unit area. When it is determined that the correction amount does not exceed the first upper limit, The controller determines the recording position based on the correction amount, and causes the head to record an image at the recording position determined in the determining.

An image reading system includes an image reading apparatus including a transport unit configured to transport a document from a bundle of cut documents one by one, a reading unit configured to read an image of the transported document, and a reading control unit, and an external control unit included in an external device coupled to the image reading apparatus, wherein an inclination correction process that corrects an inclination of the image of the document, a size determination process that determines a size of the image as a standard for the bundle of documents, and a size correction process that corrects the size of the image of the document to a specific size determined by the size determination process are performed.

Methods and associated systems for generating images with objects of interests positioned at pre-determined locations and in specific orientations (e.g., vertical to the horizon) are disclosed. The method includes generating a preview image by an image component and identifying an object of interest in the preview image. The system then determines a desirable view angle at least based on an orientation of the object of interest. The system generates an original image and a current dip angle based on a measurement performed by a tilt sensor. The system calculates an angle of rotation based on the current dip angle and the desirable view angle. The system then edits or adjusts the original image to form an edited or adjusted image that can be presented to a user.

An image capture and correction method includes steps of providing an image capture device, moving the image capture device along a specific direction to obtain an captured image and position information, performing a correction operation to the captured image, calculating to obtain a skewed angle according to the position information, setting a coordinate value of the captured image as a target value, calculating to obtain a correction value according to the target value and the skewed angle, replacing the target value with the correction value, and judging whether to continue the correction operation. Then, the correction operation is finished and the corrected captured image is stored. Therefore, the skew of the captured image is corrected, a more accurate correction value is obtained, and the advantages of precisely correcting the captured image are achieved.