Abstract: An MEMS-scanning mirror device includes an electrostatic comb actuator, in which a mirror surface is formed below a top surface (TOPS) of the mirror device. In a method for manufacturing the MEMS-scanning mirror device having the electrostatic comb actuator, a mirror surface (10BS) of a mirror plate (10B) is formed by removing an insulating layer (I) thereon.

Abstract: Input image data is converted into a brightness component to obtain a difference between the brightness component and a threshold. A count variation is determined based on the obtained difference, and the counter is used to follow up and change the threshold. The threshold obtained by the follow-up and change is used to execute a background color removal process in each pixel by executing a signal conversion process.

Abstract: An object of the present invention is to provide an image processor capable of generating an image from which a user-designated color component has been removed and performing a color/monochrome determination correctly. In order to complete the task, an image processor according to the present invention comprises a removal unit that removes a removal color part from a read image, and a determination unit that determines whether the read image from which the removal color part has been removed by the removal unit is a monochrome image or a color image.

Abstract: An MEMS-scanning mirror device includes an electrostatic comb actuator, in which a mirror surface is formed below a top surface (TOPS) of the mirror device. In a method for manufacturing the MEMS-scanning mirror device having the electrostatic comb actuator, a mirror surface (10BS) of a mirror plate (10B) is formed by removing an insulating layer (I) thereon.

Abstract: A problem of the present invention is to prevent showthrough of a rear side image to a front side image without using any complicated processing at a time of reading out both sides of a document. To solve the problem, an image processing apparatus in accordance with the present invention reads out image information on the front side and rear side of a document; calculates a first background level from the image information on the front side; calculates a second background level by adjusting the first background level according to the first background level calculated and the density of the image information on the rear side; and removes the background of the front side using the second background level.

Abstract: In this invention, image data expressed by one component is encoded at a high speed by using a color image lossless encoder. To do this, a color conversion unit converts color image data read by a document reading unit into C, M, Y, and K data. In a color reading mode, a switching unit directly outputs the C, M, Y, and K data to an encoding unit. If the reading mode is a monochrome reading mode, the switching unit neglects the C, M, and Y components of the C, M, Y, and K data. Every time four K components are input, the switching unit supplies the four K components to the encoding unit as pseudo data of C, M, Y, and K color components. The encoding unit lossless-encodes the received C, M, Y, and K component data.

Abstract: A correction in less than one pixel raises an issue of generation of image defect such as density unevenness caused by a destruction of a screen pattern that generates a cycle of image data. To solve this issue, an image processing apparatus includes a correction unit configured to perform a correction less than one pixel on image data, and a changing processing unit configured to perform a correction by one pixel on image data, wherein the correction unit performs processing for correction in less than one pixel by shifting a pixel according to a moving locus synchronized with a cycle of the image data.

Abstract: The present invention provides an image processing apparatus, and an image processing method, which can reproduce an edge portion with a high resolution in a high resolution raster image, and suppress image degradation such as a jaggy, while suppressing processing cost. In the present invention, an image processing part divides image data of raster data into blocks of M×N pixels (M, N are integers of 1 or more and also at least one of M and N is an integer of 2 or more). Then, the part performs color rounding processing in the block and counts the number of colors in the block. Subsequently, when the number of colors existing in the block is two, the part acquires shape information about arrangement of the two colors. Then, the part stores the shape information and color information for a first color and color information for a second color.

Abstract: A limit value of a recording material is determined based on a difference between a maximum density value of an image formed by an image forming unit and a maximum density value to be targeted by an image processing apparatus, and the amount of the recording material corresponding to the image data is controlled so as to be the determined limit value or below.

Abstract: The present invention provides an image processing apparatus, and an image processing method, which can reproduce an edge portion with a high resolution in a high resolution raster image, and suppress image degradation such as a jaggy, while suppressing processing cost. In the present invention, an image processing part divides image data of raster data into blocks of M×N pixels (M, N are integers of 1 or more and also at least one of M and N is an integer of 2 or more). Then, the part performs color rounding processing in the block and counts the number of colors in the block. Subsequently, when the number of colors existing in the block is two, the part acquires shape information about arrangement of the two colors. Then, the part stores the shape information and color information for a first color and color information for a second color.

Abstract: The present invention provides an image processing apparatus, and an image processing method, which can reproduce an edge portion with a high resolution in a high resolution raster image, and suppress image degradation such as a jaggy, while suppressing processing cost. In the present invention, an image processing part divides image data of raster data into blocks of M×N pixels (M, N are integers of 1 or more and also at least one of M and N is an integer of 2 or more). Then, the part performs color rounding processing in the block and counts the number of colors in the block. Subsequently, when the number of colors existing in the block is two, the part acquires shape information about arrangement of the two colors. Then, the part stores the shape information and color information for a first color and color information for a second color.

Abstract: M×N attribute data for M×N pixels, where M and N are integer multiple of “L” are input. Data expressed by L bits are encoded, A first encoding control step supplies the M×N attribute data to be encoded in an input order, causing encoding to be executed. A second encoding control step converts the M×N attribute data input into bit planes of bit 0 to bit L?1, extracts L-bit data from one converted bit plane, and supplies the extracted L-bit data for each bit plane, causing encoding to be executed. An amount of encoded data generated by the encoding under the control of the first encoding control step is compared with an amount of encoded data generated in the encoding under the control of the second encoding control step, and encoded data with a smaller amount are selected. The selected encoded data and identification information representing the selected data are then output.

Abstract: In an image processing apparatus for dividing image data into blocks having a predetermined number of pixels and processing each of the divided blocks in sequence, color data of pixels in a block to be processed is compared to identify a pattern flag that corresponds to a placement pattern of the color data included in the block. The identified pattern flag and the color data for the number of colors included in the block are output and, assuming that output color data that corresponds to a pixel at a predefined position in the block is first color data, the pattern flag, the first color data, and other color data that are output for each of the divided blocks are collectively stored in respectively different memory areas.

Abstract: There exists a problem that, for registration correction, carrying out less-than-one-pixel-basis correction and one-pixel-basis correction for an image after half toning using screen processing causes unevenness in density when it is hard for linearity of image density against a PWM to come out. Processing of interpolation is carried out so that the way how a halfdot is formed may always becomes the same after the interpolation processing. By applying a matrix in consideration of a dot direction which may be broken by the interpolation processing at the time of the screen processing, conversion in which a way of locating the half dot maintains relation of vertical inversion in a subscanning direction is carried out, and less-than-one-pixel-basis correction is carried out.

Abstract: Since a less-than-one-pixel-basis correction and a one-pixel-basis correction are constantly performed on an image after halftoning, unevenness in density disadvantageously occur depending on a halftoning method. According to the halftoning method, whether the less-than-one-pixel-basis correction is performed on a continuous tone image or the one-pixel-basis correction is performed on a halftone image is switched. The one-pixel-basis correction is constantly performed on the halftone image.

Abstract: M×N attribute data for M×N pixels, where M and N are integer multiple of “L” are input. Data expressed by L bits are encoded, A first encoding control step supplies the M×N attribute data to be encoded in an input order, causing encoding to be executed. A second encoding control step converts the M×N attribute data input into bit planes of bit 0 to bit L?1, extracts L-bit data from one converted bit plane, and supplies the extracted L-bit data for each bit plane, causing encoding to be executed. An amount of encoded data generated by the encoding under the control of the first encoding control step is compared with an amount of encoded data generated in the encoding under the control of the second encoding control step, and encoded data with a smaller amount are selected. The selected encoded data and identification information representing the selected data are then output.

Abstract: This invention is to generate encoded data within a target amount. A first encoding unit generates lossy encoded data of each pixel block by using a quantization matrix Qi specified by a parameter i. A second encoding unit generates lossless encoded data of each pixel block. Let Lx be the lossless encoded data length, and Ly be the lossy encoded data length. A control unit determines, using a nonlinear boundary function fi,j( ) specified by the parameters i and j, whether condition: Ly<fi,j(Lx) is satisfied and stores the determination result as history information in a history memory unit. One of the two encoded data is stored in a memory based on the determination result. If the encoded data amount stored in the memory has exceeded the target amount, the control unit updates at least one of the encoding parameters i and j on the basis of the history information.

Abstract: According to one aspect of the present invention, there is provided an image forming apparatus which performs print processing of image data, comprising: an expansion unit which performs downsampling processing for input image data, and then restores a target pixel of the image data, for which image processing has been performed, to the number of pixels at the time of input; a conversion unit which converts each pixel corresponding to the target pixel, restored to the number of pixels at the time of input by the expansion unit, into a pixel for printing; and a sort unit which reads each pixel corresponding to the target pixel converted by the conversion unit, reads the pixels in a raster order, and sorts the pixels.

Abstract: Resolution interpolation data is generated by relatively simple processing. This enables image encoding by simple and quick processing to attain high image quality and high compression performance. To do this, a tile divider extracts tile data of 32×32 pixels from encoding target original image data. A resolution converter samples one pixel of a block of 2×2 pixels in the tile data, thereby generating reduced tile data of a reduced image. An interpolation data generator generates interpolation data to be used to generate tile data having the original resolution from the reduced tile data. Based on the interpolation data of a tile of interest, an encoding method selector outputs a control signal indicating which one of lossless encoding and lossy encoding should be executed for the reduced tile data. A code stream generator outputs the generated encoded data and interpolation data as encoded image data.

Abstract: A problem of the present invention is to provide an image forming device which can minimize density unevenness due to interpolation processing. For solving the above problem, an image forming device according to the present invention is an image forming device including printing unit for printing an image by scanning a photosensitive body comprising correcting unit for correcting a position in which the image is printed, wherein the correcting unit outputs one of a data of a line of interest, a data of a line adjacent to the line of interest, and a data of an intermediate value between the line of interest and the line adjacent to the line of interest in accordance with a pixel shift amount and a main scan pixel position, and the printing unit scans the photosensitive body based upon the outputted data.