Disclosed are an image processing device, a printing apparatus, an image processing method, and a program capable of making processing common among printing modes to simplify an entire image processing flow in image processing based on a plurality of printing modes with different definition. An image processing unit 14 includes an image size adjustment unit 20 which adjusts the size of an input image, and a halftone processing unit 24 which performs halftone processing on the input image size-adjusted by the image size adjustment unit 20 to generate a halftone image. The image size adjustment unit 20 adjusts the input image to the same size in two or more printing modes among a plurality of printing modes with different definition, and the input image of the same size is subjected to halftone processing in the halftone processing unit 24.

A correction method for an image forming apparatus including a light source including a plurality of light emitting points, a photosensitive member configured to rotate in a first direction so that a latent image is formed thereon with light beams emitted from the light source, and a deflecting unit configured to deflect the light beams emitted from the light source in a second direction orthogonal to the first direction to form scanning lines, the correction method including a correction step of correcting sparseness and denseness of density in the first direction caused by deviation of the scanning lines in the first direction by moving a predetermined pixel in the first direction in accordance with the deviation of the scanning lines and causing a pixel value of the predetermined pixel to be output in accordance with a movement of the predetermined pixel.

A correction method for an image forming apparatus including a light source including a plurality of light emitting points, a photosensitive member configured to rotate in a first direction, and a deflection unit configured to deflect light beams emitted from the light source in a second direction orthogonal to the first direction to form scanning lines, the correction method including: a storing step of storing information on positional deviation of the scanning lines in the first direction; a conversion step of converting positions of pixels of an input image by performing coordinate transformation based on the information so that an interval of the scanning lines becomes a predetermined interval; and a filtering step of determining pixel values of pixels of an output image by subjecting pixel values of the pixels of the input image after the coordinate transformation to a convolution operation.

An image forming apparatus includes: a photosensitive member rotating in a first direction; a light scanning device, when the photosensitive member rotates at a slower speed, irradiate the photosensitive member with light beam through use of part of scanning lines corresponding to the slower speed; a storage unit in which information on positional deviation of the scanning lines in the first direction is stored; and a correction portion calculating a correction value for correcting positional deviation amounts of a predetermined scanning line and a scanning line group, which is included within a predetermined range in an advance direction and a return direction in the first direction from the predetermined scanning line, with extracting information corresponding to the part of the scanning lines from the stored information when the photosensitive member rotates at the slower speed, and correcting positional deviation of the predetermined scanning line based on the calculated correction value.

A correction method for an image forming apparatus including a light source including light emitting points, a photosensitive member configured to rotate in a first direction, and a deflecting unit configured to deflect light beams emitted from the light source in a second direction orthogonal to the first direction, the correction method includes: a first correction step of correcting sparseness and denseness of density in the first direction by moving a predetermined pixel in the first direction, and causing a pixel value of the predetermined pixel to be output or not to be output in accordance with movement of the predetermined pixel; and a second correction step of correcting the pixel value of the predetermined pixel by moving the pixel value of the predetermined pixel in the second direction so that a pixel value is caused to be output or not to be output with a plurality of continuous pixels.

A correction method for an image forming apparatus including: a light source including light emitting points, a photosensitive member configured to rotate in a first direction, and a deflecting unit configured to deflect light beam emitted from the light source in a second direction orthogonal to the first direction to form scanning lines, the correction method including a correction step of correcting sparseness and denseness of density in the first direction caused by deviation of the scanning lines by moving a predetermined pixel in the first direction in accordance with the deviation, and causing a pixel value of the predetermined pixel to be output in accordance with movement of the predetermined pixel, wherein the correction step corrects the sparseness and denseness of the density based on the deviation of the scanning lines and the pixel value of the pixel, which are adjusted in accordance with an image forming condition.

There are provided image processing device and method, a printing system, a halftone process determination method, and a program capable of determining a processing rule of an appropriate halftone process appropriate for characteristics of a printing system. An image processing device (20) according to the present invention includes characteristic parameter acquisition means (52) for acquiring characteristic parameters related to characteristics of a printing system, and halftone process generation means (58) for generating halftone processing rules that define the processing contents of two or more kinds of halftone processes of which balances of priority for a plurality of requirements required in the halftone process are different based on the characteristic parameters acquired by the characteristic parameter acquisition means (52).

There are provided a printing system, a method of generating a halftone processing rule, a method of acquiring a characteristic parameter, image processing device and method, a halftone processing rule, a halftone image, a method of manufacturing a printed material, an ink jet printing system, and a program which are capable of reducing an operation load of a user and acquiring a halftone processing rule appropriate for the printing system. A characteristic parameter acquisition chart (100) including a pattern for acquiring characteristic parameters related to characteristics of the printing system is output, and the output characteristic parameter acquisition chart (100) is read by image reading means. The characteristic parameters are acquired by analyzing the read image of the characteristic parameter acquisition chart (100), and halftone processing rules that define the processing contents of halftone processes used in the printing system are generated based on the acquired characteristic parameters.

An image capturing unit captures an image including an embedded image that is printed on the basis of image data in which at least a color component has been modulated according to additional information. An adjustment unit adjusts a white balance of the image captured by the image capturing unit on the basis of an adjustment value associated with the embedded image. A processing unit processes image data of the image captured by the image capturing unit whose white balance has been adjusted by the adjustment unit to read the additional information in the image captured by the image capturing unit.

A total sum obtained by multiplying a distribution ratio set for each of distribution destination pixels by a relative position in a first direction is a first direction total sum, a total sum obtained by multiplying the distribution ratio set for each of the distribution destination pixels by a relative position in a second direction is a second direction total sum, a ratio of the second direction total sum to the first direction total sum is a total sum ratio, a ratio of a second direction resolution to a first direction resolution is a resolution ratio, the total sum ratio when the resolution ratio is a first resolution ratio is a first total sum ratio, when the resolution ratio is a second resolution ratio greater than the first resolution ratio is a second total sum ratio, and the second total sum ratio is greater than the first total sum ratio.