Patent application number | Description | Published |
20100053652 | CHART FOR COLOR CALIBRATION, CALIBRATION METHOD AND IMAGE COLOR CALIBRATION SYSTEM USING THE CHART - In a chart for color calibration which is output and calorimetrically measured for color calibration of a printer device, respective charts of a color chart are arranged obliquely with respect to the alignment direction of grid points in a printer device color space or in a state that a plane in which charts are arranged on grid points and a plane in which charts are not arranged on grid points are alternately combined, on a color space of the color chart. With this configuration, a novel chart for color calibration which assures higher accuracy despite having a smaller number of steps (number of charts), and an image processing method and image processing apparatus using the chart are provided. | 03-04-2010 |
20100086201 | IMAGE PROCESSING APPARATUS AND COLOR PROCESSING METHOD - The colorimetric values of a plurality of reference color patches formed on a specific medium are measured at a plurality of temperatures, and a temperature characteristic LUT in a colorimetric value temperature correction unit is created based on the colorimetric values. Upon creating a calibration LUT, a patch based on arbitrary device values is formed on the medium, and a patch temperature and colorimetric values are acquired immediately after fixing of that patch. A correction target temperature as a temperature upon observation of the medium is, for example, fixed, the colorimetric values are corrected by interpolation processing based on the temperature characteristic LUT to obtain colorimetric values, and a calibration LUT is created based on the colorimetric values. | 04-08-2010 |
20100166443 | IMAGE PROCESSING APPARATUS AND IMAGE PROCESSING APPARATUS CONTROL METHOD - An image processing apparatus is provided in which the accuracy of measurement of an amount of toner adhesion is improved by forming a toner image pattern according to a detection scheme for the amount of toner adhesion. In the image processing apparatus, a toner image pattern control unit | 07-01-2010 |
20110149319 | IMAGE PROCESSING APPARATUS AND COLOR PROCESSING METHOD - It is difficult to appropriate estimate the colorimetric values of an arbitrary patch at a desired temperature with respect to an arbitrary medium in consideration of the influence of a fluorescent whitening agent contained in the medium. Target patch colorimetric values obtained when patches of a plurality of colors formed on a medium using color samples are measured at a target temperature designated in step S | 06-23-2011 |
20110164287 | IMAGE PROCESSING APPARATUS AND COLOR PROCESSING METHOD - It is difficult to appropriately estimate the colorimetric values of an arbitrary patch at a desired temperature with respect to a medium containing a fluorescent whitening agent in consideration of the influence of the fluorescent whitening agent. A target temperature and media type are designated (S | 07-07-2011 |
20110188056 | MEASURING APPARATUS AND MEASURING METHOD - A plurality of positions of a toner image formed on the image carrier of an image forming apparatus are irradiated with light. A plurality of light-receiving elements of a light-receiving unit receive a plurality of reflected lights reflected at the plurality of positions of the toner image. The light-receiving position of the light-receiving unit corresponding to each of the plurality of received reflected lights is detected. The toner height at each of the plurality of positions of the toner image is determined based on the detected light-receiving position. | 08-04-2011 |
20120150471 | COLOR PROCESSING APPARATUS, COLOR PROCESSING METHOD AND STORAGE MEDIUM - There is provided a color processing apparatus comprising: a first input unit configured to input a reference spectral reflectance obtained by measuring a patch image with a spectrophotometer serving as a reference unit; a second input unit configured to input a correction target spectral reflectance obtained by measuring the patch image with a spectrophotometer serving as a correction target unit; a correction coefficient generation unit configured to generate a correction coefficient between the correction target spectral reflectance and the reference spectral reflectance, for each wavelength; and a correction unit configured to correct, for each wavelength, the spectral reflectance measured by the correction target unit, using the correction coefficient. | 06-14-2012 |
20130155401 | IMAGE PROCESSING APPARATUS AND IMAGE PROCESSING METHOD - The present invention enables high-speed and high-precision correction of a ghost detected in a spectrum measuring apparatus. A ghost is detected from spectrum data of reference light measured by the apparatus, and for each wavelength of input light, a light amount ratio α of the input light to the corresponding ghost, as well as a shift amount di indicative of a wavelength difference between the input light and the corresponding ghost are acquired. For each spectrum wavelength of the measured light, wavelength shifting for the corresponding shift amount di and multiplication of the light amount ratio (or intensity ratio) α are performed for estimating the ghost. By removing the estimated ghost from the measured light, it is possible to realize high-precision ghost correction with a reduced amount of calculation and a reduced amount of memory. | 06-20-2013 |