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.

Provided is an image forming apparatus that extracts an area indicated by a marker. A scanner unit reads a first document having an area indicated by a handwritten marker. A panel unit displays first image data of the first document read by the scanner unit or second image data of the second document stored in a storage device. An electronic marker input unit indicates an area by an electronic marker with respect to the second image data. An area extracting unit, based on a hue difference, which is a difference between a color of the first document read by the scanner unit and a color of the handwritten marker, corrects a hue difference, which is a difference between a color of the second document and a color of the electronic marker, and extracts an area indicated by the handwritten marker or an area by the electronic marker.

Examples herein involve retrieving a color transformation from a highlighter color transform, and processing an image using the color transformation to enhance highlighter colors in the image, the image scanned by a scanner using strobed illumination.

A marker for occluding a foreign matter in an acquired image contains a mark part whose surface is provided with a two-side continuous pattern formed by combining at least one or multiple primitives; and a fixing part which fixes a marker to a surface of foreign matter in the acquired image with the mark part to facilitate algorithm recognition and marking. The method for recognizing a foreign matter marker in an image includes the steps of performing edge detection on a planar image to acquire an edge map in the planar image; and extracting all contours in the edge map. A certain number of alternative straight-line segments are determined using an algorithm; a region is determined according to the position of each alternative straight-line segment; and finally the region of the approximate area above or below the marker is used.

An image forming apparatus includes a reading section and an image forming section. The reading section reads a plurality of images formed on a document. The image forming section forms the images on a plurality of sheets. The images include a first image having a first color, and one or more second images having a second color differing from the first color. The sheets include a first sheet and a second sheet differing from the first sheet. The image forming section forms the first image on the first sheet and the second images on the second sheet.

Techniques for converting mechanical markings on hardcopy textual content into digital annotations in a digital document file. In accordance with some embodiments, the techniques include identifying at least one block of text in a digital (scanned) image of a hardcopy document, and identifying at least one mechanical marking in the digital image of the hardcopy document. The mechanical marking, such as an underline, strike-through, highlight or circle, covers or lies adjacent to the corresponding block of text. An annotated digital document file is generated from the digital image of the hardcopy document. The annotated digital document file includes computer-executable instructions representing the original text of the hardcopy document and at least one annotation corresponding to the mechanical marking in the hardcopy document.

The inventive plastic card permits a scuba diver to photograph underwater such as at 100 feet, without using external lighting, and to achieve quality photographic images as if external lighting actually had been used during the underwater photography.

An image reading device that reads an image including a fluorescent color, including: a first light source having a maximum light emission intensity at a first wavelength; a second light source having a maximum light emission intensity at a second wavelength that is longer than the first wavelength; and an image reading chip configured to read the image. The image reading chip includes a pixel including a photodetector that performs photoelectric conversion on light received from the image, and the spectral sensitivity of the photodetector when photoelectric conversion is performed takes a maximum value at light having a wavelength in a region from 400 nm to 500 nm inclusive.

In some examples, an imaging device can include a processing resource and a memory resource storing instructions to cause the processing resource to perform a feature extraction process to extract a gamut-based feature included in a plurality of pixels of a scanned image to determine whether the scanned image includes a particular marking, apply a classification model to the scanned image, and optimize the scanned image based on the classification of the scanned image.

In some examples, an imaging device can include a processing resource and a memory resource storing instructions to cause the processing resource to perform a feature extraction process to extract a gamut-based feature included in a plurality of pixels of a scanned image to determine whether the scanned image includes a particular marking, apply a classification model to the scanned image, and optimize the scanned image based on the classification of the scanned image.