An image processing device includes a reception unit and a recognition unit. The reception unit receives an input image signal and a synchronization signal including a signal pattern. In a case in which the signal pattern corresponds to a predetermined prescribed pattern, the recognition unit recognizes the synchronization signal as a genuine synchronization signal to be used to generate an output image signal on a basis of the input image signal.

Apparatuses, systems and methods for generating color video with a monochrome sensor include the acts of (i) selectively energizing each of a plurality of light sources in a sequence, (ii) capturing a monochrome image of the illuminated sample at a monochrome sensor at each stage of the sequence, and (iii) generating a color video from the monochrome images. The sequence can have a series of stages with each stage of the sequence corresponding to activation of a different wavelength of light from the light sources to illuminate a sample. Generating the monochrome video can include the acts of compiling a plurality of monochrome images captured at the monochrome sensor with a single light source into a series of monochrome video frames comprising the monochrome video.

A system and method are described for enhancing readability of document images by operating on each document individually. Monochromatic light sources operating at different wavelengths of light can be used to obtain greyscale images. The greyscale images can then be used in any desired image enhancement algorithm. In one example algorithm, an automated method removes image background noise and improves sharpness of the scripts and characters using edge detection and local color contrast computation.

An image processing device includes a reception unit and a generation unit. The reception unit receives an input image signal, and a synchronization signal used to generate an output image signal on a basis of the input image signal. The generation unit generates, in a case in which the reception unit receives an initial synchronization signal of a unit of image reading, a synchronization signal for a subsequent input image signal. The reception unit receives the synchronization signal generated by the generation unit.

An image processing device includes a reception unit and a recognition unit. The reception unit receives an input image signal and a synchronization signal including a signal pattern. In a case in which the signal pattern corresponds to a predetermined prescribed pattern, the recognition unit recognizes the synchronization signal as a genuine synchronization signal to be used to generate an output image signal on a basis of the input image signal.

In one implementation, a system for interpolating pixel values includes a receiver engine to receive a plurality of scan lines each captured using only two of three different colors of lights from a scanner, wherein each scan line comprises received pixel values for the two different colors of lights used to illuminate the plurality of scan lines, an interpolate engine to interpolate, using the received pixel values for the two different colors, pixel values for the third one of the three different colors by for each scan line to result in a color map, and a display engine to cause to display information relating to an image including the received pixel values and the interpolated pixel values for the three different colors for the plurality of scan lines.

A document reading unit includes an R light source, a G light source, a B light source, a UV light source, a lighting control unit, a first photoelectric conversion element, a second photoelectric conversion element, a lens, and an output unit. The first photoelectric conversion element includes an M filter. The second photoelectric conversion element includes a G filter. The output unit outputs outputs of the first photoelectric conversion element and the second photoelectric conversion element at the time of simultaneous lighting of the R and G light sources and an output of the first photoelectric conversion element at the time of simultaneous lighting of the B and UV light sources as the image data, and outputs an output of the second photoelectric conversion element at the time of simultaneous lighting of the B and UV light source as fluorescent color data indicating a fluorescent color region.

An internal discharge space is defined between an image reading section and an image forming section and the internal discharge space has an opening in a front of the image forming apparatus. Since the internal discharge space has the opening in the front of the image forming apparatus, a border between the internal discharge space and the housing is located in the front of the image forming apparatus. A light emitting section having a predetermined length along the border is provided and emits light along the predetermined length of the border, enabling users to check a light emission state from a distance. Accordingly, a state of the image forming apparatus can be indicated by the light emitting section.

An image processing device is configured to perform: reading an image of an original while a light emitting portion emits light with a first lighting color to acquire first image data representing the image; storing the first image data in a memory; executing a recognition process for recognizing an ID photograph in the image represented by the first image data; in response to determining that the ID photograph is recognized, outputting the image represented by the first image data; in response to determining that the ID photograph is not recognized, switching a lighting color of the light emitting portion from the first lighting color to a second lighting color different from the first lighting color; and reading the image of the original while the light emitting portion emits light with the second lighting color to acquire second image data representing the image.

An estimated image data calculator is configured to calculate, as estimated image data, for each of image data of respective colors outputted from an imaging element, on the basis of a pixel value of a first pixel on one of two lines adjacent to each other in the image data, and a pixel value of a second pixel on the other of the two lines and adjacent to the first pixel, image data of a non-reading region between a reading region in a document corresponding to the one of the two lines and a reading region in the document corresponding to the other of the two lines. A pixel value correcting unit is configured to correct at least one of the pixel value of the first pixel and the pixel value of the second pixel on the basis of the estimated image data.