Abstract: An apparatus and method for enhancing device-adaptive color is disclosed. The apparatus includes an auxiliary-gamut-setting unit which sets a boundary of a device-adaptive auxiliary gamut using information on a color gamut of a source device and information on a color gamut of a desired reference color space; a gamut-conversion unit which converts the color in the gamut of the source device into the color of the set auxiliary gamut; and a gamut-mapping unit which carries out gamut mapping of the color of the auxiliary gamut to a destination gamut of an image output device.

Abstract: A method and apparatus for converting an input color space into a CMYK color space are provided. The method includes converting a color signal of a predetermined input color space into an sRGB color space, converting the color signal of the sRGB color space into an sRGB L*a*b* color space, and converting the color signal of the sRGB L*a*b* color space into a color signal of a printer-output CMYK color space (CMYKPrinter) using a lookup table.

Abstract: A gamut mapping method and apparatus are provided which allow a reproduction device to properly represent colors that are not within a gamut boundary of the reproduction device but within in a gamut boundary of a source device. The gamut mapping method includes (a) setting a cut-off rate for a predetermined color component and defining a cut-off region on a standard color circle; (b) determining a gamut of a reproduction device using color data which is part of basic color data and corresponds to colors that do not belong to the cut-off region; (c) modifying a gamut of a source device according to the determined gamut of the reproduction device; (d) determining a mapping relationship between the modified gamut of the source device and the determined gamut of the reproduction device; and (e) creating a mapping table based on the determined mapping relationship.

Abstract: An apparatus and method for image-adaptive color reproduction is provided. The apparatus includes an information-extraction unit, an image-compression unit and an image-information-reproduction unit. The information-extraction unit inputs image information of a first color space model, converts the input image information into image information of a second color space model, and extracts pixel frequency information of pixels belonging to a plurality of color regions by using the image information of the second color space model. The image compression unit inputs the image information of the first color space model, converts the input image information into the image information of the second color space model, and calculates compressed image information by compression-mapping the image information of the second color space model. The image information reproduction unit outputs final image information by using the pixel frequency information and the compressed image information.

Abstract: A method for tone calibration and an apparatus using the same are provided. The method for tone calibration includes outputting a reference patch of a predetermined color and a plurality of sample patches having different tone levels of constant intervals of the color, receiving an input of identification information of any one of the sample patches, and generating a lookup table, which is obtained by reflecting a distortion level of the reference patch, in accordance with the input identification information.

Abstract: Apparatuses and methods for performing gamut compression. A gamut mapping apparatus of the invention includes a gamut analyzing unit for analyzing the gamut of a source device and the gamut of a target device using a gamut information profile; a gamut compressing unit for mapping original images of the source device within the gamut of the target device by using the analytical information on the gamuts; and a gamut extending unit for increasing the chroma of predetermined images among the compressed original images on the basis of the analytical information on the gamuts and the performance result of the gamut compressing unit.

Abstract: Provided is a technology which can prevent deterioration of image quality when enhancing resolution of a predetermined key frame in a video sequence. Specifically, an apparatus to enhance resolution of a video frame is provided. The apparatus includes a frame extraction unit which extracts a key frame and one or more neighboring frames of the key frame from a video sequence; an upsampling unit which upsamples the key frame and the neighboring frames; a motion-vector search unit which calculates a motion vector of the upsampled key frame using the upsampled neighboring frames as reference frames; and a key-frame estimation unit which enhances quality of the upsampled key frame using temporal information obtained from the motion vector and spatial information in the key frame.

Abstract: Provided is an image-resolution-improvement apparatus and method which can increase the resolution of an input image at a high magnification to thereby obtain a high-quality final image. The apparatus includes a textured-region-detection unit to detect a texture region in an input image; and a final-image-generation unit to synthesize a first intermediate image and a second intermediate image, which are obtained by applying different interpolation techniques to the texture region and a non-texture region excluding the texture region and generating a final image.

Abstract: A liquid crystal display includes a signal controller having a luminance controller receiving image data from an external graphic source and controlling the luminance of the image data such that the luminance at the gray expressed by a specific data value of the image data is established to be 80 cd/m2, and a gamma converter outputting image data each having a gamma characteristic adapted to a gamma 2.2 curve. The gamma converter output is determined without using a look up table based on at least one difference curve having a linear portion, a quartic portion, and a critical value where the linear portion and the quartic portion intersect. The liquid crystal display further includes a data driver receiving the image data for selecting and outputting gray voltages corresponding to the image data, and an inverter controlling a lamp to emit light with a luminance of 80 cd/m2 or more.

Abstract: A printing apparatus comprising an outer case having a cylindrical inner surface, an inner case inside the outer case and having a cylindrical outer surface facing and spaced by a predetermined distance from the cylindrical inner surface of the outer case; a paper path formed between the inner surface of the outer case and the outer surface of the inner case; a paper feed unit feeding a sheet of paper along the paper path; a printing unit rotatably mounted inside and about a central axis of the inner case; and a rotating unit rotating the printing unit. The length and width of the printing apparatus is less than the length and width of the sheet of paper, thereby providing true compactness and portability without sacrificing print quality. Continuous rotating printing unit provides significant increase in print speed without sacrificing print quality.

Abstract: The present invention relates to an image processing method and apparatus. The image processing apparatus includes an image capturing unit generating a plurality of images at different visual points and a three-dimensional image processing unit extracting depth information using the plurality of images.

Abstract: Provided are an apparatus and method for generating an image using a multi-channel filter. More particularly, provided are an apparatus and method for generating an image using a multi-channel filter, wherein images input into a plurality of image sensors are allowed to pass through different filters, each of which includes a plurality of channels, and segmented images passed through the filters are combined to produce a desired image. The apparatus includes a filter unit including a plurality of filters having different patterns with respect to a plurality of image channels and filtering images input into the filters, an image sensing unit including a plurality of image sensors sensing images filtered through the plurality of the filters, an interpolation unit calculating image channel values of pixels of the sensed images, and an image combination unit assigning the calculated image channel values to corresponding pixel positions to generate a single desired image.

Abstract: A color-management apparatus and method which can improve color reproducibility during color-gamut mapping of devices having different color gamuts are provided. The apparatus includes a transformation unit transforming a first color space of an original image supplied from a source device into a second color space, a computing unit computing a plurality of second parameters based on at least one among a plurality of first parameter defining the second color space, and a color-gamut mapping unit performing color-gamut mapping between the source device and a reproduction device reproducing an output image from the original image using the plurality of second parameters.

Abstract: A color image scanning system, method and medium that generates look-up tables for color data correction based on the type of printing paper and the kind of image on the printing papers, thereby improving color reproducibility upon scanning. A color image scanning system may include a storage unit to store look-up tables having correction values of first color data, obtained by scanning a first printing paper having a plurality of color patches, each of the look-up tables corresponding to a type of printing paper, and a final image generation unit to correct second color data, obtained by scanning a second printing paper, with reference to a look-up table of the look-up tables, the look-up table corresponding to the type of printing paper used by the second printing paper.

Abstract: A liquid crystal display includes a signal controller having a luminance controller receiving image data from an external graphic source and controlling the luminance of the image data such that the luminance at the gray expressed by a specific data value of the image data is established to be 80 cd/m2, and a gamma converter outputting image data each having a gamma characteristic adapted to a gamma 2.2 curve. The gamma converter output is determined without using a look up table based on at least one difference curve having a linear portion, a quartic portion, and a critical value where the liner portion and the quartic portion intersect. The liquid crystal display further includes a data driver receiving the image data for selecting and outputting gray voltages corresponding to the image data, and an inverter controlling a lamp to emit light with a luminance of 80 cd/m2 or more.

Abstract: A system, medium, and method calibrating gray data. The system calibrating gray data includes a transformation unit to transform red, green, and blue (RGB) data of a source device into transformed color data of a different color space using a color appearance model, and a calibration unit to map a chroma value of gray data, corresponding to the transformed color data, in the different color space to a predetermined value to generate calibrated color space data.

Abstract: Provided is a method and apparatus to perform gamut mapping between heterogeneous devices, more particularly, a method and apparatus to map a color of a device to an identical or visually and sensually preferable color of another device having a different color gamut. The method includes adjusting lightness of a color of a source device by scaling to match a lightness range of the source device with a lightness range of a destination device; modifying the adjusted lightness of the color of the source device by adjusting a color gamut of the source device to a color gamut of the destination device; and to map the modified color of the source device to a color in the color gamut of the destination device.

Abstract: A multi-focal camera apparatus and methods and mediums for generating a focus-free image and an autofocus image using the multi-focal camera apparatus are provided. The multi-focal camera apparatus includes a lens module which comprises a plurality of lenses that concentrate light incident thereupon, and an image-sensor module which comprises a plurality of sensing zones respectively corresponding to the lenses, and obtains a plurality of images by converting beams of light that transmit through the lenses into electrical signals using the sensing zones, wherein the lenses have the same optical properties and are different distances apart from the respective sensing zones.

Abstract: A color conversion method for wide-gamut color spaces, in which color conversion is performed without gamut clipping so that data corresponding to a predetermined wide-gamut color space can be directly output by a display device that supports a different wide-gamut color space from the predetermined wide-gamut color space, and which maintains characteristics of the predetermined wide-gamut color space. The color conversion method includes converting data of a predetermined wide-gamut color space into data of the RGB color space, determining whether the RGB data is outside the gamut of the RGB color space, extending the RGB data and clipping the extended RGB data if the RGB data is outside the gamut of the RGB color space, and dividing the clipped RGB data into a number of regions and performing a mapping operation in units of regions.

Abstract: An image display method and a device to secure high quality of image are provided. The image display apparatus includes a photo sensitive module having a plurality of sub sensing areas corresponding to a plurality of lens areas, an exposure control module to set exposure starting times of the sub sensing areas to be different from each other, an intermediate image to produce module interpolating a plurality of original images captured by the sub sensing areas to produce a plurality of intermediate images that correspond to the original images, and a final image to produce module rearranging the intermediate images according to the order of the original image to produce final images.