Abstract: A sheet music processing method of processing, by an image processing apparatus, image data of sheet music input by an input device, the method comprising setting, by a user using a designation unit of the image processing apparatus, a unit in which the image data of the sheet music is processed; dividing the image data of the sheet music into units corresponding to the unit; determining whether image data of a first one of the units is repeated in one or more others of the units; and processing the image data, when the image data of the first one of the units is determined to be repeated in the one or more others of the units, to append information using the image processing apparatus to the image data of the first one of the units and the image data of the one or more others of the units.

Abstract: This invention is directed to provide a method capable of performing filter processing suitable for each of different image reading methods. This method includes the steps of causing a light emitting unit to sequentially irradiate an image original with light components of three primary colors and read the image original, and causing the light emitting unit to simultaneously irradiate the image original with one of three different color combinations, which includes two of the light components of three primary colors, and read the image original. The method further includes the step of processing image data obtained based on the reflected light received by the light receiving unit after changing a filter to be used for image processing depending on whether reading of the image original is primary color reading or complementary color reading.

Abstract: There is provided an image processing method of laying out and outputting an image of an original formed from a plurality of pages on one page, the method comprising: inputting image data of the original formed from the plurality of pages; dividing the image data input in the inputting into a plurality of blocks; discarding unnecessary information; appending necessary information to each block obtained by division in the dividing based on the predetermined rule; replacing the respective blocks obtained by division in the dividing with the block from which the unnecessary information is discarded in the discarding, and the block to which the necessary information is appended in the appending; and outputting the respective blocks which have undergone replacement in the replacing by laying out the respective blocks on one page.

Abstract: An image forming apparatus and method for performing appropriate attribute determination on a wide area of image data with a simple configuration of the apparatus and performing high-quality image forming are provided. A luminance signal of each pixel of a multi-valued image is inputted to the original document reading unit, and a color attribute of a pixel of interest is determined by the pixel attribute determination unit based on the luminance signal. In the main controller, the array attribute number determined in accordance with an array of the color attribute is counted with respect to 32 lines of a block, which is obtained by dividing a band having 64 lines of the multi-valued image into 8 blocks in the main scanning direction, and the determined color attribute is counted. Based on the counted value, a parameter indicative of an image characteristic of the block is calculated. Based on the counted value and the calculated parameter, an image attribute of the block is determined.

Abstract: An image processing apparatus having a simple structure capable of forming high quality images. The image processing apparatus includes a document reader for generating a first luminance signal for each pixel in a color multi-valued image; a factor multiplication part for multiplying the first luminance signal by a factor to obtain a second luminance signal; a pixel-attribute determination part for determining the color attribute of a noticed pixel based on the second luminance signal; and a main controller. The main controller is configured to count an array attribute determined by an array of the color attributes for 32 lines in a block obtained by dividing a band including 64 lines in the color multi-valued image into eight in the main scanning direction, calculate image-characteristic parameters for the block based on the counted values, determine a block image attribute from the counted values and the calculated parameters, and determine the image attribute of the band based on the determination result.

Abstract: In ink-jet printing apparatuses having a monochrome head which is longer than a color head, if a monochrome image is processed as a color image, the printing speed cannot be improved. Accordingly, the color attribute is determined by pixel based on a luminance signal indicating a color multivalue image, and the number of color attributes and the number of array attributes in a first line group are counted. Based on these count values, a parameter indicating an image characteristic of second line group including the first line group is calculated. The image attribute of the second line group is determined in correspondence with the respective count values and the parameter. Then, based on the results of determination about adjacent second line groups, the image attribute of third line group included in the second line groups is determined. Thus attribute determination can be appropriately performed in predetermined band units of image data.

Abstract: An image processing apparatus having a simple structure capable of forming high quality images. The image processing apparatus includes a document reader for generating a first luminance signal for each pixel in a color multi-valued image; a factor multiplication part for multiplying the first luminance signal by a factor to obtain a second luminance signal; a pixel-attribute determination part for determining the color attribute of a noticed pixel based on the second luminance signal; and a main controller. The main controller is configured to count an array attribute determined by an array of the color attributes for 32 lines in a block obtained by dividing a band including 64 lines in the color multi-valued image into eight in the main scanning direction, calculate image-characteristic parameters for the block based on the counted values, determine a block image attribute from the counted values and the calculated parameters, and determine the image attribute of the band based on the determination result.

Abstract: An image forming apparatus and method for performing appropriate attribute determination on a wide area of image data with a simple configuration of the apparatus and performing high-quality image forming are provided. A luminance signal of each pixel of a multi-valued image is inputted to the original document reading unit 101, and a color attribute of a pixel of interest is determined by the pixel attribute determination unit 102 based on the luminance signal. In the main controller 103, the array attribute number determined in accordance with an array of the color attribute is counted with respect to 32 lines of a block, which is obtained by dividing a band having 64 lines of the multi-valued image into 8 blocks in the main scanning direction, and the determined color attribute is counted. Based on the counted value, a parameter indicative of an image characteristic of the block is calculated. Based on the counted value and the calculated parameter, an image attribute of the block is determined.

Abstract: In ink-jet printing apparatuses having a monochrome head which is longer than a color head, if a monochrome image is processed as a color image, the printing speed cannot be improved. Accordingly, the color attribute is determined by pixel based on a luminance signal indicating a color multivalue image, and the number of color attributes and the number of array attributes in a first line group are counted. Based on these count values, a parameter indicating an image characteristic of second line group including the first line group is calculated. The image attribute of the second line group is determined in correspondence with the respective count values and the parameter. Then, based on the results of determination about adjacent second line groups, the image attribute of third line group included in the second line groups is determined. Thus attribute determination can be appropriately performed in predetermined band units of image data.