Abstract:
Techniques for selecting a luminance value for color space conversion are disclosed. Techniques include determining values for Cb and Cr from values for R', G', and B'; producing a reconstructed Cb* value and a reconstructed Cr* value by processing the Cb and Cr values; and determining a plurality of Y' value options from the values for Cb* and Cr*. A Y' output value may be selected based on the plurality of Y' value options.
Abstract:
There is provided a signal processor including correction circuitry configured to correct a signal for each color input to the signal processor and to output the corrected signal for each color, first conversion circuitry configured to receive the corrected signal for each color, to perform first image processing on each corrected signal for each color, and to generate a first signal having a first color gamut for each color, second conversion circuitry configured to receive the corrected signal for each color, to perform second image processing on each corrected signal for each color, and to generate a second signal having a second color gamut for each color, where the signal processor outputs a first image data having a first color gamut and a second image data having a second color gamut from same corrected signals for each color.
Abstract:
An image processing apparatus includes an input unit configured to receive first material appearance data representing a material appearance of an image, a material appearance mapping unit configured to convert the first material appearance data into second material appearance data corresponding to a material appearance reproducible by a material appearance reproducing apparatus, and a conversion unit configured to convert the second material appearance data into control data for reproducing the material appearance of the image using the material appearance reproducing apparatus. The first material appearance data includes a gloss signal corresponding to a specular gloss and a gloss signal corresponding to an image clarity.
Abstract:
Provided is a method for data transmission, comprising the steps of: acquiring a luminance-component value and a chrominance-component value of each pixel contained in a pixel block having a predetermined size; acquiring a plurality of partitions in which the luminance-component values and the chrominance-component values are disposed on the basis of the spatial locations of the pixels in the pixel block; and selectively transmitting the plurality of partitions according to the data rate of image data.
Abstract:
Provided is a video signal generation apparatus and method that may minimize crosstalk between a luminance signal and color difference signals. The video signal generation apparatus may generate the luminance signal using a nonlinear Y signal and then generate color difference signals using a nonlinear XYZ signal to maximize a de-correlation characteristic between the luminance signal and the color difference signals.
Abstract:
A method for forming a digital color image of a desired resolution, includes providing a panchromatic image of a scene having a first resolution at least equal to the desired resolution and a first color image having at least two different color photoresponses, the first color image having a lower resolution than the desired resolution; and using the color pixel values from the first color image and the panchromatic pixel values to provide additional color pixels and combining the additional color pixels with the first color image to produce the digital color image having the desired resolution.
Abstract:
A method of coding/decoding a still picture is provided. The coding method includes transforming color components of image data based on a first color space into components on a first color space using an integer-integer color transform, and constructing frames for the transformed components on the second color space and coding image data of the frames. In the decoding method, the coded image data are transformed form the second color space to the fist color space and a dictionary-based decoding operation is performed.
Abstract:
Digitized picture information representing different pictures is stored in respective picture files. Each picture file has both digital picture data and presentation control information including at least orientation information for that picture. Respective additional presentation control information for the different pictures is contained in a separate control file. An apparatus for reading the information, for display on a television set, allows selective use of the presentation control information recorded in the picture file or the corresponding control information in the separate control file.
Abstract:
In the case of telefax, coding was carried until now on the basis of the run length principle, i.e. all image points of the same colour are digitally sensed until a change occurs and coded according to the MHC process. The transmission is then carried out on the basis of the phase difference or amplitude-phase-difference modulation. In the case of television, disturbances known under the terms cross colour and cross luminance were caused by the mutliplicity of carriers. The disclosed invention avoids coding delays in the case of telefax, since only the individual digits that compose the numbers are coded, for example the digits 1 to 0 for white and black. Only 20 combinations are thus required for coding. In order to further shorten transmission time, white-only lines are condensed. In the case of television, a code multiplexing condensation of all signals allows only one carrier to be used.