Class / Patent application number | Description | Number of patent applications / Date published |
345597000 | Color | 27 |
20090046107 | DISPLAY APPARATUS - A display apparatus includes a display portion and a control portion, and effects color display depending on image signals for three colors. The control portion includes means | 02-19-2009 |
20090096809 | COLOR QUANTIZATION BASED ON DESIRED UPPER BOUND FOR RELATIVE QUANTIZATION STEP - A computer system ( | 04-16-2009 |
20100026708 | METHOD FOR APPLYING THE SAME DITHERING TABLE TO DIFFERENT FLAT PANELS AND DISPLAY PANEL DRIVING METHOD USING THE SAME - A method for applying the same dithering table to different flat panels and a display panel driving method using the same. The method for applying the same dithering table to different flat panels is mainly to set different dot counts between different panels on the rows, in which pixels are shifted, so that the display data of scan lines, in which the pixels are shifted, is shifted by the dot counts when the display data is substituted into the dithering table. Thus, even if different display panels use the same dithering table, the display entropy can be uniformly distributed. | 02-04-2010 |
20100207959 | LCD TEMPORAL AND SPATIAL DITHERING - A method and system for temporal dithering of pixels in a display. The dithering of the pixels may allow for simulation of 8-bit color from a 6-bit display. Moreover, the dithering of the pixels may be selected to follow a specific pattern to minimize display artifacts, which might otherwise result from interference generated by pixel inversion techniques performed during the pixel dithering. Through application of selective dithering techniques, including utilization of specific dithering patterns, the generation of display artifacts via interference from pixel inversion techniques during the display of an image may be minimized. | 08-19-2010 |
20100259553 | METHOD AND DEVICE TO ENHANCE IMAGE QUALITY IN DIGITAL VIDEO PROCESSING SYSTEMS USING DITHERING - A processing chain for a digital image signal ( | 10-14-2010 |
20100289813 | NUCLEAR MEDICAL IMAGING APPARATUS, IMAGE PROCESSING APPARATUS, AND IMAGE PROCESSING METHOD - A two-dimensional look-up-table (LUT) storage unit stores a two-dimensional LUT in which each combination of two input values is associated with an output value for outputting a different color tone. A registration unit registers Positron Emission Tomography (PET) images of examination 1 and examination 2 by using X-ray CT images of the examination 1 and the examination 2; and an output-image creating unit acquires from the two-dimensional LUT an output value where input values are a combination of pixel values of corresponding pixels between the registered PET images, and creates an output image. Moreover, the output-image creating unit creates the output image from output values within a setting range specified on the two-dimensional LUT, among acquired output values. A display control unit controls display such that an output image or a composite image of an output image and an X-ray CT image created by a composite-image creating unit is to be displayed on a monitor. | 11-18-2010 |
20100295866 | REDUCING IMAGE ARTIFACTS IN A COLOR SEQUENTIAL DISPLAY SYSTEM - Methods, systems, and apparatus, including computer program products, for reducing artifacts in a color sequential display system. A frame of a digital image is displayed by receiving frame data, determining dither patterns, applying the dither patterns to the data, and displaying the dithered data. Each pixel of a frame of a digital image is displayed by receiving pixel data, grouping the pixel data for the color channels of the image into a plurality of sub-groups of pixel data; and displaying the pixel according to a sequence that separates each pair of sub-groups for a color channel by a sub-group for another color channel. Modified pixel data can be generated by replacing parent bits in the pixel data with corresponding pluralities of divided child bits, where all the child bits for a given parent bit have a divided weight that adds up to the parent bit's weight. | 11-25-2010 |
20110090242 | SYSTEM AND METHOD FOR DEMOSAICING IMAGE DATA USING WEIGHTED GRADIENTS - Various techniques are provided herein for the demosaicing of images acquired and processed by an imaging system. The imaging system includes an image signal processor and image sensors utilizing color filter arrays (CFA) for acquiring red, green, and blue color data using one pixel array. In one embodiment, the CFA may include a Bayer pattern. During image signal processing, demosaicing may be applied to interpolate missing color samples from the raw image pattern. In one embodiment, interpolation for the green color channel may include employing edge-adaptive filters with weighted gradients of horizontal and vertical filtered values. The red and blue color channels may be interpolated using color difference samples with co-located interpolated values of the green color channel. In another embodiment, interpolation of the red and blue color channels may be performed using color ratios (e.g., versus color difference data). | 04-21-2011 |
20110285746 | Enhancing Color Images - A method for enhancing a color image may include selecting a set of operations from a group of operations, specifying an order for performing the selected set of operations, receiving the color image, and performing, with a processor, the selected set of operations in the specified order on the color image. The group of operations may include a color correcting operation, an image filtering operation, a color linearization operation, a saturation adjustment operation, a luma scaling operation, and an image dithering operation. The method may include determining an optical property of an ambient light source or an image type of the color image. The selecting of the set of operations may be based at least in part on the determined optical property of the ambient light source or on the determined image type. The method may include an efficient method for correcting image saturation of a color image. | 11-24-2011 |
20120236021 | METHODS AND APPARATUS FOR DITHER SELECTION - Systems, methods and apparatus including computer programs encoded on computer storage media optimize display image quality under a variety of imaging environments. Dynamic frame streams such as those present in video applications may require a higher frame rate to adequately convey motion in the stream. A line multiplying image pipeline may be utilized for dynamic frames, which lowers the resolution of the displayed image. When dithering line multiplied images, a noise signal including asymmetrical high frequency components around zero frequency may be utilized. The display of static frames, such as photographs, may be achieved with acceptable image quality using a relatively lower display frame rate. Such a frame rate may enable the display of a high resolution image. A noise signal tailored for higher resolution, non line multiplied frames, such as a noise signal with symmetric high frequency components around zero frequency may be utilized for static frames. | 09-20-2012 |
20120262475 | METHOD AND APPARATUS TO INCREASE BIT-DEPTH ON GRAY-SCALE AND MULTI-CHANNEL IMAGES (INVERSE DITHERING) - The present disclosure relates to the use of inverse dithering of color or grey-scale images. In certain embodiments, an image area may be selected having a center pixel. A predictive value of the image area may be found by averaging the values of the pixels in the image area. This predictive value may be compared to the center pixel's real value. A difference between the real value and the predictive value may then be found and used to diffuse the energy removed from the center pixel to neighboring pixels. By inverse dithering images using an energy diffusion approach, the images may be presented as having a more visually appealing display, even in situations where the images may undergo further edge enhancements. | 10-18-2012 |
20120268479 | METHODS AND APPARATUS FOR IMPROVED DITHERING ON A LINE MULTIPLIED DISPLAY - This disclosure provides systems, methods and apparatus including computer programs encoded on computer storage media for producing line multiplied images with better visual appearance. In one aspect, before lines of the image are multiplied, they are dithered with a noise signal that increases faster with higher frequency along the multiplied dimension of the image data than along the non multiplied dimension of the image. This results in a line multiplied image was improved image quality. | 10-25-2012 |
20130120437 | DISPLAY CONTROLLING UNIT, IMAGE DISPLAYING SYSTEM AND METHOD FOR OUTPUTTING IMAGE DATA - A display controlling unit comprises an input connectable to receive input image data representing an input image comprising a first set and a second set of image elements. The second set of image elements comprises a safety relevant information. The display controlling unit also comprises an output connectable to provide output image data representing an output image at least comprising the safety relevant information, an image enhancement module arranged to perform an image enhancement processing for the first set of image elements when a safety mode signal indicates a first mode, and a verification module arranged to perform a verification processing for the second set of image elements when the safety mode signal indicates a second mode. | 05-16-2013 |
20140192079 | ADAPTIVE TEMPORAL DITHER SCHEME FOR DISPLAY DEVICES - This disclosure provides systems, methods and apparatus, including computer programs encoded on computer storage media, for displaying high resolution images using an adaptive temporal dithering scheme on display devices having two or more color planes. The adaptive temporal dithering scheme includes identifying the dither visibility of an image to be displayed by the color planes and adaptively applying temporal dithering to the color plane having the highest dither visibility. In one aspect, temporal dithering can be adaptively applied between two different color planes on a frame-by-frame basis based at least partly on the dither visibility of the image content. | 07-10-2014 |
20140198126 | METHODS AND APPARATUS FOR REDUCED LOW-TONE HALF-TONE PATTERN VISIBILITY - This disclosure provides methods, apparatus, and computer programs encoded on computer storage media for reduced low tone pattern visibility. In one aspect, the disclosed methods receive an input image including a plurality of pixels, quantize the plurality of pixels, set half-tone image pixels corresponding to the portion of the input pixels that are below a crush threshold to a crushed value, and diffuse the quantization error resulting from the quantizing to half-tone image pixels other than the portion. In some implementations, the half-tone image pixels are then output to an output device such as an electronic display. | 07-17-2014 |
20140327694 | Simultaneous Display of Multiple Content Items - Techniques for presenting multiple content items on a display without hardware modification. These techniques determine a first angle relative to the display at which a first content item is to be shown and a second content item is to be hidden. The techniques also determine a second angle at which the first content item is to be hidden and the second content item shown. The techniques then compute a first pair of pixel values having a contrast that is less than a threshold at the first angle and a second pair of pixel values having a contrast that is less than the threshold at the second angle. The techniques then render the content items such that the first content item is perceivable at the first angle and hidden at the second angle, while the second content item is hidden at the first angle and perceivable at the second angle. | 11-06-2014 |
20150029212 | POLY-PHASE FRAME MODULATION SYSTEM - A poly-phase frame modulation system includes a phase matrix look-up table being configured for generating a reference phase matrix; a first phase modulator being configured for generating a first modulated output by taking in the data from a red channel and the sum of the reference phase matrix and a frame offset; a second phase modulator being configured for generating a second modulated output by taking in the data from a green channel and the sum of the reference phase matrix, the frame offset and a first channel offset; and a third phase modulator being configured for generating a third modulated output by taking in the data from a blue channel and the sum of the reference phase matrix, the frame offset and a second channel offset. | 01-29-2015 |
20150379734 | DITHERED SAMPLING PATTERNS FOR TEMPORAL COLOR AVERAGING - Graphics processing is performed in which a decision is made in individual tiles whether or not to sample at a reduced sampling rate. A sampling pattern is selected from a set of sampling patterns having the same reduced sampling rate. The sampling pattern is dithered over a set of frames to reduce the visual appearance of visual artifacts via temporal color averaging. | 12-31-2015 |
20160042492 | Image Processing Apparatus, Image Processing Method and Computer Readable Medium - An image processing apparatus including: a pattern detecting section which detects a specific pattern in an image; an image holding section which holds the image; an image conversion section which converts a pattern in the image into a pattern different from the specific pattern; and an output switching section which outputs an image having the pattern converted by the image conversion section for a region where the specific pattern is detected by the pattern detecting section, and outputs the image held by the image holding section for a region where the specific pattern is not detected. | 02-11-2016 |
20160077329 | DITHERED DISPLAYS AND DITHERING PROCESSES AND APPARATUS - In one innovative aspect of the disclosure, a method includes patterning a first region and a first portion of a second region of a substrate using a first reticle. The method also includes patterning the second region and a first portion of the first region using a second reticle. The method additionally includes forming a first array of first patterned elements based on the patterning by the first reticle, and forming a second array of second patterned elements based on the patterning by the second reticle. In some implementations, each of the first and the second arrays are incomplete in each of the first portions. However, the first patterned elements in the first portion of the second region are complementary to the second patterned elements in the first portion of the second region. Similarly, the first patterned elements in the first portion of the first region are complementary to the second patterned elements in the first portion of the first region. In some such implementations, the combination of the first array and the second array form a complete array of patterned elements. | 03-17-2016 |
20160078843 | VIDEO PROCESSING DEVICE AND METHOD - The present disclosure discloses a video processing device and method, the device comprising a dual matrix selecting module and a dual channel color data processing module. Due to the use of the dual channel color data processing module, two groups, i.e. an odd group and an even group, of pixel data can be processed simultaneously within one clock period. Since two dithering matrices are used when two adjacent frames of images are displayed, the structure is simple, and the processing speed is high. The present disclosure uses the algorithm period of two frame cycle for dithering in time and uses the dithering matrix of 2*2 for dithering in space, so as to achieve the effect of dithering 8 bit video data using 6 bit display data. Moreover, due to the use of two dithering matrices, the display performance of the display can be improved, two groups, i.e. an odd group and an even group, of pixel data are processed simultaneously within one clock, which reduces the working frequency of the circuit. | 03-17-2016 |
20160080712 | Dithering for Chromatically Subsampled Image Formats - Dithering techniques for images are described herein. An input image of a first bit depth is separated into a luma and one or more chroma components. A model of the optical transfer function (OTF) of the human visual system (HVS) is used to generate dither noise which is added to the chroma components of the input image. The model of the OTF is adapted in response to viewing distances determined based on the spatial resolution of the chroma components. An image based on the original input luma component and the noise-modified chroma components is quantized to a second bit depth, which is lower than the first bit depth, to generate an output dithered image. | 03-17-2016 |
20160118020 | HYBRID SCALAR-VECTOR DITHERING DISPLAY METHODS AND APPARATUS - This disclosure provides systems, methods, and apparatus for generating images on a display using a hybrid scalar-vector dithering process. The hybrid scalar-vector dithering process includes a combination of a scalar dithering process and a vector dithering process. In the scalar dithering process, at least one color subfield is dithered based on the data within just that color subfield. In the vector dithering process, data across multiple color subfields is dithered together. In some implementations, the color subfield processed by the scalar dithering process is a composite color subfield, such as white (W), yellow (Y), cyan (C) and magenta (M). The color subfields processed by the vector dithering process can be component color subfields, such as red (R), green (G), and blue (B) color subfields. In some implementations, an identical dither mask is applied in both the vector and scalar portions of the hybrid scalar-vector dithering process. | 04-28-2016 |
345598000 | Spatial | 4 |
20100073397 | System and Method for Grouped Pixel Addressing - In accordance with the teachings of the present disclosure, a system and method for displaying an image are provided. In one embodiment, the method includes receiving a data stream representing a frame of an image. The data stream may indicate a first color pixel cluster corresponding to a first color and a second color pixel cluster corresponding to a second color. The first color pixel cluster and the second color pixel cluster may be displayed. The first color pixel cluster may be different from the second color pixel cluster. | 03-25-2010 |
20140160146 | Spatio-Temporal Color Luminance Dithering Techniques - Systems and methods are disclosed to enable the creation and the display of spatio-temporal dithered images. Embodiments include techniques that use color-shifting and luminance. In one embodiment, adjacent pixels are color-shifted with respect to each other and the color values of the adjacent pixels are temporally alternated with color values of pixels in the group. In another embodiment, the luminance of group of adjacent pixels is determined and the luminance of the group is made more homogenous spatially and temporally by distributing color variations over a larger number of pixels so as to reduce the luminance difference between the pixel with the least luminance and the pixel with the greatest luminance. Individual color components (e.g., red, green, blue) may also be separated and used so that the color-shifts associated with each color component may be simultaneously present in different pixels. | 06-12-2014 |
20140204114 | SPATIO-TEMPORAL ERROR DIFFUSION FOR IMAGING DEVICES - A method for reducing bit-depth of image data for an imaging device includes receiving an image frame for display to the imaging device. The method additionally includes applying temporal error diffusion for the image frame to produce a plurality of image subframes, wherein temporal errors generated in one subframe of the image frame are passed to a next subframe of the image frame for temporal error diffusion. The method also includes applying spatial error diffusion to remaining temporal errors from the temporal error diffusion of the image frame. | 07-24-2014 |
20160379543 | DEVICE AND METHOD FOR COLOR REDUCTION WITH DITHERING - Techniques for displaying a quality-improved image with reduced power consumption are provided. In one embodiment, a display panel driver is provided that includes a dithering section configured to receive first m-bit image data and configured to generate second image data by performing dithering on the first image data with n-bit dither values each selected from elements of a dither table, and a driver circuit configured to drive the source lines of a display panel in response to the second image data. In generating the second image data corresponding to first pixels belonging to a first pixel column, the dither values are selected from elements in a first column of the dither table, while the second image data corresponding to second pixels belonging to a second pixel column adjacent to the first pixel column, the dither values are selected from elements in a second column of the dither table. | 12-29-2016 |