Class / Patent application number | Description | Number of patent applications / Date published |
358521000 | Gradation | 7 |
20090109507 | Image Forming Apparatus, Image Forming Method, and Computer Readable Medium Recording a Printing Data Generation Program - An image forming apparatus that uses a plurality of colorants for image formation and performs the image formation based on bitmap data in which each pixel has a gradation value of each color of the colorants, includes: a correction unit which executes a correction processing of correcting gradation values with respect to at least some pixels in which a gradation value of the colorants other than that of black color is 0 and a gradation value of the colorant of black color is not 0 in the bitmap data, wherein the correction unit executes different processing between a case in which the gradation value of black color of the bitmap data of the pixel that is a processing object is a maximum value and a case in which this gradation value is less than the maximum value. | 04-30-2009 |
20090109508 | Image Processing Method, Program for Image Processing, and Image Processing Apparatus - An image processing method for generating a gradation image, including the steps of: (a) acquiring a coordinate of a start point, a color value of the start point, a coordinate of an end point, and a color value of the end point; (b) setting either the number of pixels between the start point and the end point that is calculated on the basis of the coordinates that are acquired in the coordinate-and-color-value acquisition (a) or the number of colors between the start point and the end point, whichever is smaller, as the number of complementary colors of a complementary color list; (c) creating the complementary color list that has the number of complementary colors that is set in the complementary-color-number setting (b); and (d) generating the gradation image with the use of the complementary color list that is created in the complementary-color-list creation (c). | 04-30-2009 |
20100128332 | Image signal processing apparatus and method, and program - An image signal processing apparatus includes the following elements. A control unit determines a gradation correction characteristic representing a conversion characteristic for correcting brightness of an input frame. A separation unit separates the determined gradation correction characteristic into a representative gradation correction value representing an amount of correction for a representative value of a main subject and a remaining gradation correction characteristic obtained by removing the representative gradation correction value from the gradation correction characteristic. A gain processing unit uniformly applies the separated representative gradation correction value to the frame as a gain. A noise reduction processing unit performs noise reduction processing on the frame to which the representative gradation correction value is applied. A gradation correction processing unit performs gradation correction processing on the frame for which the noise reduction processing has been performed using the separated remaining gradation correction characteristic. | 05-27-2010 |
20130286451 | SIGNAL INTENSITY MATCHING OF IMAGE SENSORS - Disclosed is a method of processing signals from a large-format scanner comprising a first and a second image sensor that provide respective image signals recorded at respective areas of a scanned medium, where a portion of the respective areas is recorded also by the other of the respective image sensors, whereby image data from overlapping and non-overlapping areas are present in the respective signals; the method comprising: determining a first and a second level of intensity from image signals from the first and the second image sensor at the overlapping area, respectively; determining a compensation value by processing the first level of intensity and the second level of intensity to determine a discrepancy between the level of intensities; applying compensation values to image data from overlapping and non-overlapping areas to provide compensated image data to compensate for a discrepancy between levels of intensity from the first and the second image sensor. | 10-31-2013 |
20140268260 | APPARATUS, SYSTEM, AND METHOD OF INSPECTING IMAGE, AND COMPUTER-READABLE MEDIUM STORING IMAGE INSPECTION CONTROL PROGRAM - An information processing apparatus including a read image obtainer and a setting value calculator implemented by circuitry. The read image obtainer obtains a scanned determination image, including a plurality of different dot patterns output by an image forming apparatus on a recording medium. The setting value calculator, for each of the different dot patterns of the obtained scanned determination image, determines densities of different colors of the respective dot pattern and a total number of pixels influencing the density of each coefficient of a dot gain correction filter, with respect to each target pixel. The setting value calculator further configured calculates the coefficients of the dot gain correction filter based on the determined densities of the different colors of the different dot patterns and the total number of pixels, determined for each coefficient of the dot gain correction filter and for each of the different dot patterns. | 09-18-2014 |
20160134781 | IMAGE SCANNING APPARATUS - An image scanning apparatus, comprising: a gray reference member; a scanning unit; a signal conversion unit; a controller configured to: calculate white and black difference data of one line by subtracting first black data of one line from white data of one line; calculate a white and black difference maximum value and obtain a particular pixel position corresponding to the white and black difference maximum value; calculate light gray black difference data of one line by subtracting second black data of one line from light gray data of one line; calculate a gray white ratio by dividing the white and black difference maximum value at the particular pixel position by the light gray black difference data at the particular pixel position; and calculate reference data of one line by multiplying light gray data of one line by the gray white ratio. | 05-12-2016 |
20160173735 | IMAGE FORMING APPARATUS, IMAGE FORMING METHOD, AND STORAGE MEDIUM | 06-16-2016 |