An information processing apparatus connected to an image forming unit and a reading unit is provided. The apparatus generates image data based on document data described in a page description language, encodes the document data to be multiplexed on the image data, outputs the image data to the image forming unit, restores the multiplexed document data from the image data read by the reading unit, and saves the image data read by the reading unit and the document data restored by a restoration unit.

An information processing apparatus connected to an image forming unit and a reading unit is provided. The apparatus generates image data based on document data described in a page description language, encodes the document data to be multiplexed on the image data, outputs the image data to the image forming unit, restores the multiplexed document data from the image data read by the reading unit, and saves the image data read by the reading unit and the document data restored by a restoration unit.

A method for controlling production of color products includes receiving a reference image for a color product; producing a plurality of color products corresponding to the color product in the reference image; acquiring a plurality of images corresponding to the plurality of color products; determining whether an appearance defect exists for each of the plurality of color products by comparing each image of the plurality of images corresponding to the plurality of color products to the reference image; for each detected appearance defect, determining a severity of the appearance defect; generating a visualization of appearance defects on an image of the color product based on the severity of the appearance defect and a frequency of occurrence of the appearance defect; and adjusting production of the color product in response to the visualization of appearance defects to reduce the severity or frequency of occurrence of the appearance defect.

A method for controlling production of color products includes receiving a reference image for a color product; producing a plurality of color products corresponding to the color product in the reference image; acquiring a plurality of images corresponding to the plurality of color products; determining whether an appearance defect exists for each of the plurality of color products by comparing each image of the plurality of images corresponding to the plurality of color products to the reference image; for each detected appearance defect, determining a severity of the appearance defect; generating a visualization of appearance defects on an image of the color product based on the severity of the appearance defect and a frequency of occurrence of the appearance defect; and adjusting production of the color product in response to the visualization of appearance defects to reduce the severity or frequency of occurrence of the appearance defect.

A processor generates an extraction image by extracting, from a test image, a target specific part that is a horizontal stripe extending in a horizontal direction or a noise point. The processor derives a vertical data sequence from a target area in the extraction image and converts the vertical data sequence to primary conversion data of a frequency domain. The processor converts, to secondary conversion data of a space domain, correction data that is obtained by removing, from the primary conversion data, data of frequency bands other than a particular frequency band corresponding to a target specific part that was determined as having periodicities. The processor classifies the target specific parts into periodic specific part and non-periodic specific part by comparing positions of the target specific parts with a peak position in a waveform represented by the secondary conversion data.

A processor identifies a specific part composed of a plurality of significant pixels in a mixed-color test image. Furthermore, the processor identifies a color vector. The color vector represents a vector in a color space from one of a color of the specific part in the mixed-color test image and a color of a reference area including a periphery of the specific part to the other. Furthermore, the processor determines which of a plurality of image creating portions of an image forming device corresponding to a plurality of developing colors, is a cause of an image defect, based on the color vector identified from the mixed-color test image.

A processor identifies a specific part composed of a plurality of significant pixels in a mixed-color test image. Furthermore, the processor identifies a color vector. The color vector represents a vector in a color space from one of a color of the specific part in the mixed-color test image and a color of a reference area including a periphery of the specific part to the other. Furthermore, the processor determines which of a plurality of image creating portions of an image forming device corresponding to a plurality of developing colors, is a cause of an image defect, based on the color vector identified from the mixed-color test image.

A local variance or an edge amount is calculated as an image feature amount by analyzing a reference image of the same field of view as multiple band images constituting a multispectral image, a filter parameter is calculated from the image feature amount, and smoothing the band images while preserving edges is performed by using the filter parameter. When a multispectral image including a band image of a wavelength band in which a sufficient signal amount is not obtained is obtained, it is possible to improve the S/N ratio of the multispectral image without destroying edges.

An image processing apparatus corrects a measured value obtained by measuring a measurement image formed using a printing element configured to discharge ink, the measured value being used to identify a density characteristic of the printing element. The image processing apparatus obtains a measured value; and corrects the measured value based on a density of the measurement image.

An image processing apparatus corrects a measured value obtained by measuring a measurement image formed using a printing element configured to discharge ink, the measured value being used to identify a density characteristic of the printing element. The image processing apparatus obtains a measured value; and corrects the measured value based on a density of the measurement image.