An image processing apparatus includes an image processor that performs error diffusion processing by applying an error diffusion matrix to multi-valued image data having pixels two-dimensionally arranged, so as to convert the multi-valued image data into binary image data. The binarization unit applies an error diffusion matrix in which the diffusion coefficient of a pixel diagonal to a focused-on pixel is greater than those of other pixels.

A method for printing a product that includes a graphic that is tessellated includes receiving or generating the graphic and a tessellation pattern for the graphic; determining a first repeated swath using at least the graphic and the tessellation pattern, wherein the product to be printed includes at least two instances of the first repeated swath, wherein the first repeated swath includes i) at least two full copies of the graphic, ii) at least two partial copies of the graphic; or iii) at least one full copy and at least one partial copy of the graphic; generating raster data of the first repeated swath; and printing the product using the raster data of the first repeated swath to print the first repeated swath at least twice.

A method for printing a product that includes a graphic that is tessellated includes receiving or generating the graphic and a tessellation pattern for the graphic; determining a first repeated swath using at least the graphic and the tessellation pattern, wherein the product to be printed includes at least two instances of the first repeated swath, wherein the first repeated swath includes i) at least two full copies of the graphic, ii) at least two partial copies of the graphic; or iii) at least one full copy and at least one partial copy of the graphic; generating raster data of the first repeated swath; and printing the product using the raster data of the first repeated swath to print the first repeated swath at least twice

A raster image processing system including a computer readable media storing digital information that includes information corresponding to an image, and instructions for performing raster image processing (RIP) using an over scan RIP technique on the image to generate a bitmap. Also included is a processor configured to RIP the image using the over scan RIP technique at a multiple of the desired output pixel resolution to produce a plurality of sub-pixels per output pixel. The processor is further configured to determine each image output pixel value based on the values set for the plurality of sub-pixels of each image pixel, by firstly comparing the values of the plurality of sub-pixels to each other and, and then secondly comparing the values of the plurality of sub-pixels to a set background value if needed. The processor then sets the output pixel value based upon that second comparison, and generates a bitmap.

An image processing device includes an image data acquisition section configured to acquire image data of an image to be printed on a print medium; a parameter acquisition section configured to acquire parameters for performing physical based rendering of the print medium on which the image is to be printed as a 3D object, the parameters including a normal line map representing a normal line direction of an irregularities surface of the print medium related to a reflection direction of light incident on the print medium; a correction section configured to correct strength of an application effect of the normal line map corresponded with the 3D object; and a rendering execution section for generating a rendering image representing the print medium on which the image is printed by executing the physical based rendering using the image data and the parameters.

A raster image processing system including a computer readable media storing digital information that includes information corresponding to an image, and instructions for performing raster image processing (RIP) using an over scan RIP technique on the image to generate a bitmap. Also included is a processor configured to RIP the image using the over scan RIP technique at a multiple of the desired output pixel resolution to produce a plurality of sub-pixels per output pixel. The processor is further configured to determine each image output pixel value based on the values set for the plurality of sub-pixels of each image pixel, by firstly comparing the values of the plurality of sub-pixels to each other and, and then secondly comparing the values of the plurality of sub-pixels to a set background value if needed. The processor then sets the output pixel value based upon that second comparison, and generates a bitmap.

An image processing device includes an image data acquisition section configured to acquire image data of an image to be printed on a print medium; a parameter acquisition section configured to acquire parameters for performing physical based rendering of the print medium on which the image is to be printed as a 3D object, the parameters including a normal line map representing a normal line direction of an irregularities surface of the print medium related to a reflection direction of light incident on the print medium; a correction section configured to correct strength of an application effect of the normal line map corresponded with the 3D object; and a rendering execution section for generating a rendering image representing the print medium on which the image is printed by executing the physical based rendering using the image data and the parameters.

An image forming method of the present invention is an image forming method of forming a halftone image on a corrugated fiberboard recording medium using an inkjet recording device that uses magenta ink and other inks with two or more colors other than the magenta ink, and is an efficient method that does not generate a mottle in an image printed in multicolor on a corrugated fiberboard recording medium using an inkjet recording device by determining a droplet ejection position of the magenta ink and then determining droplet ejection positions of the other inks with two or more colors to be positions different from the droplet ejection position of the magenta ink.

An image forming method of the present invention is an image forming method of forming a halftone image on a corrugated fibreboard recording medium using an inkjet recording device that uses magenta ink and other inks with two or more colors other than the magenta ink, and is an efficient method that does not generate a mottle in an image printed in multicolor on a corrugated fibreboard recording medium using an inkjet recording device by determining a droplet ejection position of the magenta ink and then determining droplet ejection positions of the other inks with two or more colors to be positions different from the droplet ejection position of the magenta ink.

An image processing apparatus includes an image processor that performs error diffusion processing by applying an error diffusion matrix to multi-valued image data having pixels two-dimensionally arranged, so as to convert the multi-valued image data into binary image data. The binarization unit applies an error diffusion matrix in which the diffusion coefficient of a pixel diagonal to a focused-on pixel is greater than those of other pixels.