| Patent application number | Description | Published |
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| 20090323132 | IMAGE PROCESSING APPARATUS, METHOD OF IMAGE PROCESSING, COMPUTER PROGRAM, AND STORAGE MEDIUM - 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. | 12-31-2009 |
| 20100124380 | IMAGE ENCODING APPARATUS AND METHOD OF CONTROLLING THE SAME - This invention generates efficient encoded data to restore original image data from reduced image data. An input unit inputs block data of 2×2 pixels from original image data. A converter generates reduced image data having a size smaller than the original image data by sampling one pixel data at a preset position in the input block data. A generator generates encoded data to restore three non-sampling target pixel data in each block data so as to restore the original image data from the reduced image data generated by the resolution converter. To do this, the generator determines whether all non-sampling target pixels in a block of interest are restorable from a sampling target pixel in the block of interest or from sampling target pixels in three blocks adjacent to the block of interest, and generates and outputs three kinds of additional information based on the determination result. | 05-20-2010 |
| 20100128295 | IMAGE FORMING DEVICE, IMAGE FORMING METHOD AND STORAGE MEDIUM - 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. | 05-27-2010 |
| 20100142840 | IMAGE ENCODING APPARATUS AND METHOD OF CONTROLLING THE SAME - 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. | 06-10-2010 |
| 20100182637 | IMAGE FORMING APPARATUS, CONTROL METHOD, AND PROGRAM - 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. | 07-22-2010 |
| 20110109942 | IMAGE FORMING APPARATUS AND IMAGE FORMING METHOD FOR CORRECTING REGISTRATION DEVIATION - 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. | 05-12-2011 |
| 20110116136 | IMAGE FORMING APPARATUS AND IMAGE FORMING METHOD FOR CORRECTING REGISTRATION DEVIATION - 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. | 05-19-2011 |
| Patent application number | Description | Published |
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| 20080259359 | IMAGE PROCESSING APPARATUS, IMAGE PROCESSING METHOD, COMPUTER PROGRAM, AND STORAGE MEDIUM - 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. | 10-23-2008 |
| 20080260273 | IMAGE PROCESSING APPARATUS AND METHOD - An object of this invention is to increase the encoding efficiency of attribute data of each pixel of image data by using the fact that the probability that the attribute flag data of adjacent pixels have the same bit position is higher than the probability that the attribute flag data of adjacent pixels have the same value. In the first phase, to encode 32×32 attribute data having a size of 8 bits corresponding to one pixel, input attribute data is directly output to an encoding unit and encoded. In the second phase, “7” is set in a variable i as the initial value. Eight attribute data are input. Eight-bit data including bits i is generated and output to the encoding unit. The data of bits | 10-23-2008 |
| 20090097072 | IMAGE PROCESSOR AND IMAGE PROCESSING METHOD - 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. | 04-16-2009 |
| 20090161124 | IMAGE PROCESSING APPARATUS, IMAGE PROCESSING METHOD AND COMPUTER PROGRAM - 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. | 06-25-2009 |
