摘要:
A white-plate graphic erosion process is performed on print data subjected to a RIP process in the following procedure. First, an erosion candidate region which is a candidate for a region in which a white-plate graphic is eroded is determined. Then, a region to be applied with an ink of a color other than white is determined. Then, an application target region is determined. Then, a region other than a region obtained by an erosion process out of the application target region is determined to be an erosion allowed region. Then, a region included in the colored region and the erosion allowed region out of the erosion candidate region is determined to be an erosion target region. Finally, the values of data of pixels included in the erosion target region among white-plate data are rewritten such that the amount of white ink applied to the pixels is reduced.
摘要:
An image processing device includes a first gradation processor to apply first pseudo halftone processing to image data, an edge detector to detect an edge portion of the image data to output a detection result, a correction value calculator to calculate an edge correction amount and convert the image data to corrected image data based on the edge correction amount, a second gradation processor to apply, to the corrected image data, second pseudo halftone processing for edge processing, and an output selector to adopt a processing result at the first gradation processor to a non-edge portion of the image data, and a processing result at the second gradation processor to an edge portion of the image data, based on the detection result at the edge detector.
摘要:
An image forming method according to the present invention includes obtaining a number of pixels in a sub-scanning direction of a white region in image data, the white region being adjacent to a region at a downstream side in the sub-scanning direction of the region and the region being in the image data and including, continuously in the sub-scanning direction, pixels with a density not smaller than a predetermined density, and correcting a pixel value for a unit region based on the number of pixels of the white region obtained by the obtaining so that a density of the unit region becomes low, the unit region being included in the region at the downstream side thereof in the sub-scanning direction.
摘要:
An image processing apparatus causes a printing executing section to perform a printing process using color-materials, the image processing apparatus includes: a first processing unit that performs a first image-processing by processing original image data in order to generate first processed image data; and a supplying unit, wherein the first processing unit includes: a calculating unit that calculates an index value relating an edge-intensity about a target pixel in object image data; and a correcting unit that corrects a value of the target pixel based on the index value of the edge-intensity, wherein the correcting unit corrects the value of the target pixel such that print-density of the target pixel increase if the target pixel is a first pixel, and wherein the correcting unit corrects the value of the target pixel such that print-density of the target pixel decrease if the target pixel is a second pixel.
摘要:
The present invention is an image forming apparatus for interpreting data to generate intermediate data and the image forming apparatus includes: a unit configured to determine whether or not there is a periodic drawing pattern in data; a unit configured to determine whether or not there is a reduction command in data; a unit configured to obtain a ratio between the number of pitches of the period of the drawing pattern and a reduction ratio included in the reduction command; a unit configured to determine whether or not the ratio and a value in a table loaded by the image forming apparatus coincide with each other; and a unit configured to reduce, in the case where it is determined that the ratio coincides with a value in the table, an image by dividing the image into cells and performing thinning processing in units of cells.
摘要:
An image processing apparatus, an image processing method for controlling it, and a storage medium. The image processing apparatus determines whether or not a line of interest is a black line, and counts, when it is determined that the line of interest is the black line, the number of consecutive black lines. It determines whether or not the line of interest is in a black area in accordance with whether or not the number of consecutive black lines counted in the counting is greater than a predetermined value, and in a case that it is determined that the line of interest is the black line and it is determined that the line of interest is not in the black area, it executes thinning processing for the line of interest.
摘要:
An image forming apparatus includes: a head unit that ejects ink; and a control unit that creates pixel data showing the amount of the ink ejected on predetermined pixels, and ejects metallic ink containing metallic particles from the head units such that the amount of the metallic ink is smaller than the amount of the metallic ink shown by the pixel data in a portion of the pixel inside the pixels on the outline of a metallic image formed by the ejected metallic ink and such that the amount of the eject ink per area is larger than the amount of the metallic ink at the inside pixels in the pixels on the outline, on the basis of the pixel data.
摘要:
A data processing apparatus determines a color range based on a dot counting value of a number of colors smaller than a number of colors subjected to thinning processing. Thus, even if the number of ink colors subjected to the thinning processing is great, a processing load of the determination of the color range can be reduced.
摘要:
A print controller controls a print process in which black ink having permeability to a recording medium and chromatic color ink having permeability to the recording medium different from the permeability of the black ink are used to form an image on the recording medium. The subject pixel setting unit sets, as a subject pixel, one pixel that satisfies a first condition that the pixel is a black pixel, a second condition that a plurality of peripheral pixels that are located adjacent to the pixel and that surround the pixel include at least one chromatic pixel, and a third condition that gradation level of black changes discontinuously between the pixel and at least one of the at least one chromatic pixel. The bleed suppressing unit executes a bleed suppression process to a set of pixel data corresponding to the subject pixel to suppress bleeding of the black ink on the recording medium.
摘要:
Input pixels are input to a thinning processing circuit. When thinning is performed at the thinning processing circuit, minimum values are selected in order to reduce the pixel data, whereby loss of thin lines is prevented. The thinned image data are input to a binarization processing circuit. Although the image having been thinned through selection of minimum values becomes dark as a whole, collapse of characters can be suppressed, because the binarization processing circuit dynamically changes a binarization threshold by employing, as the binarization threshold, the average of maximum and minimum values in each local region. In a density flat portion, the local maximum value and the local minimum value assume the same value. Therefore, when the difference between the local maximum value and the local minimum value is not greater than a predetermined range, binarization is performed by use of a fixed threshold value. Instead of local maximum and minimum values, a local average value may be used as a binarization threshold value.