Abstract: According to an embodiment, a color tone control device includes circuitry. The circuitry is configured to extract, from a master image in which a color patch is added outside a printing image area, a color measurement target area in the printing image area; calculate a color measurement area of the color patch from the master image; and generate a gradation correction parameter for correcting gradation depending on a color tone variation amount that is based on the color measurement area of the color patch and the color measurement target area in the printing image area.

Abstract: According to an embodiment, a color tone control device includes circuitry. The circuitry is configured to extract, from a master image in which a color patch is added outside a printing image area, a color measurement target area in the printing image area; calculate a color measurement area of the color patch from the master image; and generate a gradation correction parameter for correcting gradation depending on a color tone variation amount that is based on the color measurement area of the color patch and the color measurement target area in the printing image area.

Abstract: [Task to be Solved] One of the principal objects of the invention is to collect minute diamond particles of D50 of 20 nm and smaller, by MICROTRAC UPA 150, in high precision and high definition. [Means for Solving the Task] The minute diamond particles of the invention are recovered by a method comprising: (1) joining or combining a hydrophilic functional group with a surface of diamond powder that comprises particles of a primary particle size of 50 nm or less, so as to impart hydrophilic nature on the surface, (2) placing the hydrophilic diamond particles to hold in suspension in water to form a slurry, (3) subjecting said slurry to a hyper-centrifugal process at a centrifugal force of 4×103 G and at the same time a centrifugal load product of 200×103 G·min.

Abstract: A color profile generator that generates a color profile to translate colors includes a data reading unit that reads image data of a specified image, a specification acceptance unit that accepts specifying an image type and an output device that outputs the image data, a screen display unit that displays a screen for inputting one or more setting values representing at least one index associated with the specified image type and emphasized in performing color translation, a parameter determination unit that determines a parameter used for translating colors based on the input setting value, and a profile generator that translates colors of the specified image based on the determined parameter and characteristic data regarding colors of the specified output device and generates the color profile using the read image data and a result of translating colors.

Abstract: An object of this invention is to provide a fine powder of diamond particles of less than 50 nm with a narrow particle size range. The diamond is single crystalline and characterized with a lot of sharp edges and sharp points. Another object is to provide a method for efficiently producing such fine powder. The method comprises mechanically crushing a raw material of single crystalline diamond particles to prepare starting minute particles of diamond, then imparting hydrophilic quality to the surface of diamond particles. As hydrophilic the diamond particles are dispersed in water to form a slurry, which is set and kept weakly alkaline. The slurry is then subjected to a preliminary grading step, whereby the slurry is removed of a top particle size fraction of the diamond particles that has a D50 size of 60 nm or more. Eliminated of said top particle size fraction, the slurry is then diluted with water to regulate the diamond concentration to 0.1% (by weight) or less.

Abstract: An image reproducing apparatus is operative in accordance with multiple display modes. The image reproducing apparatus includes a data reproducing unit that reproduces an image on a display based on high dynamic range image data acquired from an object and stored in memory, and a dynamic range control unit that controls the dynamic range of the image to be reproduced on the display using one of different types of dynamic range control schemes in accordance with one of the display modes.

Abstract: A converting unit converts a first color signal into a second color signal and a third color signal. A first correcting unit corrects a magnitude relation between hue angles of the third color signal such that a magnitude relation between hue angles of the second color signal corresponding to the first color signal is maintained in the hue angles of the third color signal. The first color signal is a device-dependent input red, green, blue color signal. The second color signal is a color signal of a hue, lightness, saturation color space. The third color signal is a color signal of CIECAM02 color space.

Abstract: An image processing apparatus converts an input color signal into a color signal which falls within a color reproduction range of an image output device. The image processing apparatus includes a representative color setting unit that sets plural representative colors, a first hue setting unit that sets hue for an equi-hue line connecting the representative color and black, a hue correcting unit that corrects hue of the input color signal referring to the first hue setting unit, and a mapping unit that maps the input color signal after whose hue is corrected to a color signal within a color range of the image output device.

Abstract: An image output apparatus includes a receiving unit that receives first information from a first radio contact element that performs a close-range radio contact; an image processing unit that forms image data of an image to be output from the first information; and an image output unit that outputs the image to an output medium from the image data.

Abstract: [Task to be Solved] One of the principal objects of the invention is to collect minute diamond particles of D50 of 20 nm and smaller, by MICROTRAC UPA 150, in high precision and high definition. [Means for Solving the Task] The minute diamond particles of the invention are recovered by a method comprising: (1) joining or combining a hydrophilic functional group with a surface of diamond powder that comprises particles of a primary particle size of 50 nm or less, so as to impart hydrophilic nature on the surface, (2) placing the hydrophilic diamond particles to hold in suspension in water to form a slurry, (3) subjecting said slurry to a hyper-centrifugal process at a centrifugal force of 4×103 G and at the same time a centrifugal load product of 200×103 G·min.

Abstract: An image processing apparatus includes a first storage unit, a second storage unit, a selecting unit, a first converting unit, a second converting unit, and a compressing unit. The second storage unit stores therein data on a color reproduction area of an output device. The first storage unit stores therein data on virtual color reproduction areas. The selecting unit selects one of the virtual color reproduction areas similar to the color reproduction area of the output device. The first converting unit compresses and maps image data to a virtual color reproduction range based on the selected one of the virtual color reproduction areas. The compressing unit compresses and maps the image data to a color reproduction range of an output device. The second converting unit converts the image data to a control signal.

Abstract: An image processing apparatus that stores input image data is disclosed. The image processing apparatus includes a color space evaluating unit which evaluates a color space of the input image data by comparing the color space of the input image data with a reference color space, a frequency distribution calculating unit which calculates an appearing frequency distribution of a color included in the input image data, and a color space determining unit which determines a color space in which the input image data are to be stored by applying color control to the input image data based on the evaluated result by the color space evaluating unit and the calculated result by the frequency distribution calculating unit.

Abstract: A signal processing method for converting input color value information (Lab) represented in a uniform color space into a set of five output color levels of black, light black, and three chromatic colors (CMYKLk) is provided. A black output level (K) is determined based on the input color value information. Then, a light black output level (Lk) is determined based on the black output level and the input color value information. Output levels of the three chromatic colors (CMY) are also determined such that the determined output levels are colorimetrically consistent with the input color value information.

Abstract: An object of this invention is to provide a fine powder of diamond particles of less than 50 nm with a narrow particle size range. The diamond is single crystalline and characterized with a lot of sharp edges and sharp points. Another object is to provide a method for efficiently producing such fine powder. The method comprises mechanically crushing a raw material of single crystalline diamond particles to prepare starting minute particles of diamond, then imparting hydrophilic quality to the surface of diamond particles. As hydrophilic the diamond particles are dispersed in water to form a slurry, which is set and kept weakly alkaline. The slurry is then subjected to a preliminary grading step, whereby the slurry is removed of a top particle size fraction of the diamond particles that has a D50 size of 60 nm or more. Eliminated of said top particle size fraction, the slurry is then diluted with water to regulate the diamond concentration to 0.1% (by weight) or less.

Abstract: A converting unit converts a first color signal into a second color signal and a third color signal. A first correcting unit corrects a magnitude relation between hue angles of the third color signal such that a magnitude relation between hue angles of the second color signal corresponding to the first color signal is maintained in the hue angles of the third color signal. The first color signal is a device-dependent input red, green, blue color signal. The second color signal is a color signal of a hue, lightness, saturation color space. The third color signal is a color signal of CIECAM02 color space.

Abstract: An image output apparatus includes a receiving unit that receives first information from a first radio contact element that performs a close-range radio contact; an image processing unit that forms image data of an image to be output from the first information; and an image output unit that outputs the image to an output medium from the image data.

Abstract: An image output apparatus includes a receiving unit that receives first information from a first radio contact element that performs a close-range radio contact; an image processing unit that forms image data of an image to be output from the first information; and an image output unit that outputs the image to an output medium from the image data.

Abstract: An image processing apparatus includes a first storage unit, a second storage unit, a selecting unit, a first converting unit, a second converting unit, and a compressing unit. The second storage unit stores therein data on a color reproduction area of an output device. The first storage unit stores therein data on virtual color reproduction areas. The selecting unit selects one of the virtual color reproduction areas similar to the color reproduction area of the output device. The first converting unit compresses and maps image data to a virtual color reproduction range based on the selected one of the virtual color reproduction areas. The compressing unit compresses and maps the image data to a color reproduction range of an output device. The second converting unit converts the image data to a control signal.

Abstract: When performing predetermined color correction/modification processing on RGB image data including red, green and blue color components so as to perform hue correction thereon, a frequency distribution of respective tone values is obtained for at least one of these red, green and blue color components of the RGB image data; it is determined from the frequency distribution whether or not the RGB image data has already undergone tone transformation; and the predetermined color correction/modification processing is performed on the RGB image data so as to perform the hue correction thereon only when it is determined that the RGB image data has not undergone tone transformation yet.

Abstract: An image processing apparatus converts an input color signal into a color signal which falls within a color reproduction range of an image output device. The image processing apparatus includes a representative color setting unit that sets plural representative colors, a first hue setting unit that sets hue for an equi-hue line connecting the representative color and black, a hue correcting unit that corrects hue of the input color signal referring to the first hue setting unit, and a mapping unit that maps the input color signal after whose hue is corrected to a color signal within a color range of the image output device.