Abstract: An information processing apparatus is constructed to include a color display part for simultaneously displaying a reference color patch and at least one measuring color patch which is to be measured, on a display unit.

Abstract: A third color data which is at the same hue angle as that of first color data and also has the highest chroma within a color gamut of a printer and a fourth color data for an achromatic color having the same lightness as that of the third color data are acquired. First color data are converted to second color data based on the target color data located at any of a first line linking the fourth color data to color data corresponding to the black color in the color gamut of the printer, on a second line linking the fourth color data to color data corresponding to the white color in the color gamut of the printer, or on a third line linking the fourth color data to the third color data.

Abstract: Images at two or more correction levels are output as corrected images for a given image, and a user is allowed to select a preferred corrected image. Based on the selection result of the user, an image to be corrected which is different from the given image is corrected.

Abstract: In a virtual gamut-obtaining step, lightness, saturation, and/or hue angle of the second gamut is converted and an expanded virtual gamut including at least all of the lightness values of the first gamut is obtained. In a color data changing step, for color data which is not included in the virtual gamut in color data of the first gamut, lightness, saturation, and hue angle are changed, thereby obtaining third color data included in the virtual gamut. In a color data forming step, a conversion opposite to the conversion performed to the second gamut in the virtual gamut obtaining step is executed to the third color data, thereby forming second color data.

Abstract: In addition to linear conversion parameters V1 to V8 which are used in an interpolation calculation, non-linear conversion parameters VV1 to VV8 are calculated. Each time an input color is fetched, whether the linear conversion parameters are used or the non-linear conversion parameters are used is discriminated. The interpolation calculation of a high precision using the non-linear conversion parameters is performed for a region where it is necessary to guarantee a gradation, thereby preventing a reversal of an output color in a region including an achromatic gradation axis. Regions other than such a region are processed by the interpolation calculation using the linear conversion parameter at a high speed.

Abstract: A color converting apparatus and method which accurately converts a color signal in the vicinity of the boundary of a color range of a color reproducing device. This enables dissimilar devices to exchange color images and accurately reproduce colors from the sending device to the receiving device despite different color capabilities of the two devices. This is accomplished by a first color converted result and a second color converted result are stored in a color conversion table. The first color converted result is obtained by converting an input color signal into a color signal that is color-reproducible. The second color converted result is obtained by converting an input color signal into a color signal that is not color-reproducible. In a region outside of the color reproducible range of a printer, a display, or other similar devices, when the relationship of an input color signal is accurately kept, a color signal is accurately performed.

Abstract: A color image processing apparatus and method capable of changing/converting an inadequate-exposure image or an over-exposure image into an apparently natural image or a pleasing-lightness image. The apparatus is equipped with an object color designating section for designating an object color in an input color image, an optimum color setting section for setting an optimum color corresponding the object color, a lightness conversion factor obtaining section for obtaining a lightness conversion factor based on the object color and the optimum color, and a lightness converting section for converting the lightness of the color image using the lightness conversion factor to create a lightness-changed color image. This apparatus is useful in correcting lightness over a color image input from a digital camera, an image scanner or the like.

Abstract: If all colors of a picture obtained by a first color picture device cannot be outputted from a second color picture device, a plurality of color data which are outside the gamut of the second color picture device and are inside the gamut of the first color picture device are converted so as to preserve correspondence regarding both the lightness value and the saturation value. Furthermore, if, since an equi-hue line has distortion, the tone of a color represented by color data is changed by conversion, the hue angle of the color data is rotated and converted. In picture data, color data for the color of paper or the color of a picture digitally generated have extreme values, and errors occur when the data are converted. In this case, data around the color data in a color conversion table are modified to obtain a desirable conversion result.

Abstract: In measuring a spectral irradiance distribution of light, light is irradiated to n (natural number) light-transit sections, which respectively have n kinds of given optical characteristic coefficients, and s (natural number) optical sensors, which respectively have s kinds of given spectral sensitivities, receive the light via the n light-transit sections and detects individual responses for the received light. Then a calculating section calculates m (natural number) spectral irradiances for m kinds of wavelengths as a spectral irradiance distribution based on linear formulae established between the optical characteristic coefficients, the spectral sensitivities, (n×s) responses for the light obtained by the s optical sensors, and the spectral irradiance distribution of the light.

Abstract: A color signal selection apparatus comprising a color space split unit for splitting a color space to which an inputted first color signal belongs, according to the first color signal, and a color signal selection unit for selecting second color signals from within color subspaces which have been formed by the splitting of the color space split unit, the second color signals being distributed on the color subspaces.

Abstract: The invention provides a technique regarding color conversion table construction conversion and makes it possible to convert a construction of an originally present color conversion table efficiently at a high speed into another construction which includes least and necessary color data in a uniform distribution so as to facilitate color conversion. The color conversion table construction conversion method includes the data production interval setting step of setting data production intervals in a first color space based on a data dispersion in one of the first color space and a second color space, the data production step of increasing the number of data representative of the corresponding relationships of colors at the thus obtained data production intervals, and the data selection step of selecting some data from either one or both of the data which originally construct the color conversion table and the increased data.

Abstract: An image display system, provided with a plurality of display units and a pointing device for moving a cursor between the plurality of display units, includes a cursor position detecting unit for detecting a desired cursor movement that corresponds to an operation of the pointing device and a cursor movement control unit for moving the cursor commensurate with the operation of the pointing device such that the cursor is moved differently from one display unit to another.

Abstract: Image data from an upper apparatus is compressed by a compressing unit, the compressed image data is transferred to a display apparatus by a printer interface of a low speed, and the original image data is reconstructed by a decoding unit and displayed. The display apparatus is a projector and auxiliarily displays a second picture plane into a first picture plane for presentation by an independent liquid crystal panel. A phase transition type liquid crystal panel of a number of pixels and a high resolution is used to display the first picture plane and the image data is compressed and transferred and is displayed. As a second picture plane, a personal computer picture plane is transferred and displayed as it is.

Abstract: Image data from an upper apparatus is compressed by a compressing unit, the compressed image data is transferred to a display apparatus by a printer interface of a low speed, and the original image data is reconstructed by a decoding unit and displayed. The display apparatus is a projector and auxiliarily displays a second picture plane into a first picture plane for presentation by an independent liquid crystal panel. A phase transition type liquid crystal panel of a number of pixels and a high resolution is used to display the first picture plane and the image data is compressed and transferred and is displayed. As a second picture plane, a personal computer picture plane is transferred and displayed as it is.

Abstract: In an image and code data compression apparatus for compressing the image data and further compressing the code data which are compressed from the image data, the apparatus includes: a dividing unit for receiving the image data and dividing them into a plurality of image data blocks; a transformation unit operatively connected to the dividing unit for performing an orthogonal transformation to the image data block and calculating transformation coefficients for every frequency component; a quantizing unit operatively connected to the transformation unit for quantizing the transformation coefficients which are calculated by the transformation unit by using a quantized threshold value which is set commonly to all image data, and calculating the quantized orthogonal transformation coefficients; a coding unit operatively connected to the quantizing unit for performing the variable length coding process for the quantized transformation coefficients which are calculated by the quantizing unit and outputting the cod

Abstract: A display apparatus having an optical device for separating the light from a light source for projection into two polarized light beams, a first liquid-crystal panel which includes a polarizing plate and to which a first polarized light beam separated by the optical device is input and a second liquid-crystal panel which has no polarizing plate and to which a second polarized light beam separated by the optical device is input, in which a data separating means separates display data into data for the first liquid-crystal panel and data for the second liquid-crystal panel, a first liquid-crystal panel display controller controls the color display of the first liquid-crystal panel in accordance with the separated data for the first liquid-crystal panel, a second liquid-crystal panel display controller controls the monochrome display of the second liquid-crystal panel in accordance with the separated data for the second liquid-crystal panel and an optical system synthesizes the pictures on the first and second l

Abstract: A device for printing print data after converting the print data into converted print data includes a head unit for printing the converted print data by moving in a scanning direction, the head unit having at least one head line in which print elements are arranged diagonally with respect to the scanning direction, a row-order-conversion unit for rearranging rows of the print data according to an arrangement of the print elements so as to generate row-converted print data, and a column-order-conversion unit for rearranging column positions of the row-converted print data according to the arrangement of the print elements so as to generate the converted print data.

Abstract: The present invention provides a converging light transmitting glass body whose refractive index gradually changes from its central portion to its surface in a direction transverse to a path of light, said glass body containing at least three cations constituting modifying oxides of the glass, a first and a second cation among said cations showing concentration changes of converse gradients from its central portion toward its peripheral surface, and a third cation showing no substantial concentration change at the central portion of the glass body but showing a substantial continuous concentration charge outwardly thereof toward its peripheral surface.