Abstract: An image inspection device which makes it easy to recognize a defect in an image formed on a recording medium, through an image display. The image inspection device includes an inspection report creating section for creating an inspection report which gives an inspection image read from a recording medium a mark indicating a defect generated in the inspection image. When the defect has a directional component, the inspection report creating section creates an inspection report which gives a mark indicating the direction of extension of the defect at a position where the defect has been generated in the inspection image.

Abstract: An image inspection device includes a capture unit and an image inspection unit. The capture unit captures a read image. The image inspection unit detects an image defect in an inspection image captured by the capture unit by comparing the inspection image with a reference image that consists of an RIP image, the inspection image being obtained by reading a sheet to be inspected on which an image corresponding to the reference image is formed. The image inspection unit performs color conversion from CMYK to RGB on the reference image, compares the inspection image in RGB with the reference image in RGB to check difference, and makes a threshold for detecting an image defect larger or does not detect an image defect, for a portion of the reference image where a change in a particular color is more than a predetermined value.

Abstract: An image processing apparatus includes a hardware processor that acquires a read image obtained by reading an image printed on a recording medium based on a printing image by an image reader, wherein the hardware processor generates a difference image based on a difference between the read image and the printing image, and determines presence or absence of a defect in the read image based on magnitude of fluctuation of a pixel value in the difference image.

Abstract: An image inspection apparatus includes: an acquirer that acquires a targeted image to form an image; an alignment calculator that calculates a correction parameter in order to align a targeted image with a read image; an alignment corrector that corrects at least one of a targeted image and a read image by using the correction parameter; and an image inspector that determines a flaw in a read image based on a difference between the targeted image and the read image corrected by the alignment corrector. The alignment corrector saves the correction parameter on a page basis and uses the correction parameter corresponding to a page including an image when aligned.

Abstract: An image processing device includes: a compression unit that compresses original image data in units of a block; a first position correction unit that shifts positions of respective pixels contained in the original image data compressed by the compression unit such that the positions are shifted in a sub scanning direction; an expansion unit that expands the original image data shifted by the first position correction unit; and a second position correction unit that converts resolution of the original image data into higher resolution, and shifts the positions of the respective pixels of the converted original image data, wherein the first shift amount is a shift amount set in units of a shift corresponding to an integral multiple of the block, and the second shift amount is a shift amount set in units of a shift corresponding to one pixel with high resolution converted by the second position correction unit.

Abstract: An image forming system, including: an image forming unit; a check unit; and a conveyance mechanism; wherein when an image is determined as an abnormal image, the image forming unit stops image forming and reforms the image, the conveyance mechanism includes a second conveyance path being a detour path of the first conveyance path and having a length at least equal to a length from an end point of image forming to a point of obtaining a determination result, and the conveyance mechanism conveys a sheet having an abnormal image to the second tray via the first conveyance path and conveys a sheet having a normal image to the second conveyance path for standby, and the conveyance mechanism conveys a sheet having a reformed image determined as a normal image and the sheet on the second conveyance path to the first tray in a page order.

Abstract: An image processing device includes: a compression unit that compresses original image data in units of a block; a first position correction unit that shifts positions of respective pixels contained in the original image data compressed by the compression unit such that the positions are shifted in a sub scanning direction; an expansion unit that expands the original image data shifted by the first position correction unit; and a second position correction unit that converts resolution of the original image data into higher resolution, and shifts the positions of the respective pixels of the converted original image data, wherein the first shift amount is a shift amount set in units of a shift corresponding to an integral multiple of the block, and the second shift amount is a shift amount set in units of a shift corresponding to one pixel with high resolution converted by the second position correction unit.

Abstract: An OFDM communication system is provided that can implement more accurate signal transmission. The guard interval in the symbol section is formed by copying a predetermined number of symbols at the end portion of the symbol section and adding them to the forefront portion of the symbol portion. In the subsidiary station, the clipping start position stored in its memory is referred. Then, a predetermined number of symbols are clipped from the clipping start position. The clipped signal includes the guard interval of the symbols. However, since the guard interval is the signal obtained by copying the rear portion of the symbol, the clipping signal is the signal in which the phase of the symbol is merely deviated. An accurate symbol is obtained by performing phase correction. Thus, the influence due to multipath is suppressed while the signal transmitted from the base station can be accurately decoded.