Abstract: An image processing apparatus comprises: an unit configured to extract first color data and first attribute data from a pixel value, and to extract second to fourth color data and second to fourth attribute data corresponding to a second pixel value to a fourth pixel value corresponding to the arrangement pattern defined in a specified pattern flag; an unit configured to hold the pattern flag, the first color data, the second to fourth color data, the first attribute data, and the second to fourth attribute data; an unit configured to determine whether attribute data of all pixels included in a tile are identical; and an unit configured to perform control to delete the first attribute data and the second to fourth attribute data, and to store, in header information, information indicating that the attribute data in the tile are identical and information of the attribute data determined to be identical.

Abstract: Aspects of the invention provide systems and methods for converting a digital image represented in a lower bit depth representation to a higher bit depth representation. A saturation region is identified, where a color model value of the pixels in the saturation region is above an upper saturation threshold or below a lower saturation threshold. The color model value for each pixel in the saturation region is then adjusted by a corresponding adjustment. The magnitude of the adjustment for each pixel is based on characteristics of the image data.

Abstract: An image processing device includes a compression circuit adapted to perform compression of image data after sorting the pixels in an arrangement included in a plurality of lines in image data into a plurality of lines corresponding respectively to color components, a memory adapted to store the image data thus compressed, and an expansion circuit adapted to expand the image data thus compressed to restore the arrangement of the pixels.

Abstract: A data element can be encoded into multiple encoded data elements using an encoding algorithm that includes an encoding function and one or more encoder constant. The encoded data elements can be organized into multiple pillars, each having a respective pillar number. Each of the pillars is sent to a different storage unit of a distributed storage network. To recover the original data element, the encoded data elements are retrieved from storage, and the encoder constant is recovered using multiple encoded data elements. Recovering the encoder constant allows the encoding algorithm originally used to encode the data elements to be determined, and used to recover the original data element. The security of the stored data is enhanced, because an encoded data element from a single pillar is insufficient to identify the encoder constant.

Abstract: Methods and apparatus are provided for encoding and decoding image data using localized gamut definitions. The localized gamut definitions may be defined based on gamut characteristics of the image data. A gamut transform is applied to the image data wherein color coordinates specified by the image data are mapped to corresponding color coordinates in the localized gamut definition. Use of localized gamut definitions may facilitate image data compression of increased color depth specification of image data.

Abstract: A method for coding image data together with its shape and other details as a two dimensional barcode is disclosed. The method stores the shape details together with the color information of a product which is very useful for representing to a user. The method enables the encoding of an image with its shape, size, name and other details of the product in a most compact way. Also, the method enables decoding of the information to get the detailed information without using internet.

Abstract: To encode and compress a data array 30, the data array 30 is first divided into a plurality of blocks 31. A quadtree representation is then generated for each block 31 by initialising each leaf node of the quadtree to the value of the data element of the block 31 of the data array 30 that the leaf node corresponds to, and initialising each non-leaf node to the minimum value of its child nodes, and then subtracting from each node except the root node the value of its parent node. A set of data indicating the differences between respective parent and child node values in the quadtree representing the block of the data array is then generated and stored, together with a set of data representing a quadtree indicating the number of bits that have been used to signal the respective difference values.

Abstract: An image processing apparatus which applies processing to image data encoded by an encoding method that encodes image data by holding, for each block including the predetermined number of pixels, color information and color layout information included in that block, the apparatus comprises: a detection unit configured to detect a region including successive pixels having identical color information, the number of pixels of which is larger than a predetermined value, using the color information and the color layout information in the encoded image data; and a conversion unit configured to convert color information of a pixel corresponding to a predetermined position in the region, and layout information of a block including the pixel at the predetermined position, of a plurality of blocks including the region detected by the detection unit.

Abstract: A method for compressing a high dynamic range (HDR) texture. A first block of texels of the HDR texture in a red-green-blue (RGB) space may be transformed to a second block of texels in a luminance-chrominance space. The first block may have red values, green values and blue values. The second block may have luminance values and chrominance values. The chrominance values may be based on a sum of the red values, a sum of the green values and a sum of the blue values. The luminance values and the chrominance values may be converted to an 8-bit integer format. The luminance values may be modified to restore a local linearity property to the second block. The second block may be compressed.

Abstract: An image processor includes a phase shift section to shift, upon field encoding an image in an interlaced format having different vertical resolutions in a luminance signal and a color difference signal, a phase of the luminance signal in accordance with a type of current field, which is subjected to process, and a vertical resolution ratio of the luminance signal to the color difference signal; a prediction image generation section to generate an intra prediction image of the color difference signal using the luminance signal having the phase shifted by the phase shift section; and an encoding section to encode, using the intra prediction image generated by the prediction image generation section, the image.

Abstract: An image control device, which achieves energy saving effects without degradation of an image to be displayed, even if image data includes a fault, is configured to decode received image data into an image, generate display information based on the received image data, and output a decoded image and display information. The image control device receives image data, detects errors from the image data. For each error detected, the image control device specifies a fault image region containing an error from an entire image region of the image data, and inhibits use of the fault image region for generating display information that defines an image display condition according to which the display device performs the image display.

Abstract: A method and system for predicting expansion difficulty and an expansion time required to perform print-time imaging operations. A print-ready compressed file may be generated by raster image processing of a job description file associated with a rendering job provided by a digital front end. The expansion time with respect to one or more expansion processes may be predicted by a linear equation during assembly of the compressed file. The linear equation may be formulated based on measured compression statistics that relate to profile data within the compressed file. The total expansion time with respect to the rendering job may be then computed by summing the results of the linear equations. The expansion time to perform the print-time imaging operations may be compared with an available time based on an image output terminal speed to improve performance of raster image processing.

Abstract: An image processing apparatus and a method thereof are provided. The image processing apparatus includes a memory device and a first and a second image data transformation unit. A first image data is written into and read from the memory device. Each pixel value has a first data format. The first data format is compatible with a dedicated format accessible by the memory device. The first image data transformation unit transforms a second image data into the first image data. The second image data includes a plurality of pixel values each having a second data format. The second data format is not compatible with the dedicated format. The second image data transformation unit transforms the first image data into a third image data. The third image data includes a plurality of pixel values each having a third data format. The third data format is not compatible with the dedicated format.

Abstract: An image encoder includes an extreme value determiner, a floating point-to-integer converter and an encoder. The extreme value determiner determines minimal and maximal values of a floating point image value of each pixel of a part of an image, an image or a group of images. The floating point-to-integer converter maps the floating point image value of each pixel to an integer image value. The minimal floating point image value is mapped to a minimal integer image value of a predefined range of integer image values and the maximal floating point image value is mapped to a maximal integer image value of the predefined range of integer image values. The encoder encodes the integer image value of each pixel to obtain and provide encoded image data of the part of the image, the image or the group of images.

Abstract: An image processing apparatus includes an image extracting unit, a vector information generating unit and a color information adding unit. The image extracting unit extracts an image to be vectorized from a multilevel image as a binary image. The vector information generating unit vectorizes the binary image extracted by the image extracting unit to generate vector information. The color information adding unit adds color information to the vector information generated by the vector information generating unit.

Abstract: An apparatus and method for encoding quantized frequency represented data, the data comprising zero and non-zero represented data is claimed. For zero represented data, a zero run length is determined. A Golomb parameter is determined as a function of the zero run length. A quotient is encoded as a function of the zero run length and the Golomb parameter. A remainder is encoded as a function of the zero run length, the Golomb parameter and the quotient. The coded quotient and the coded remainder are concatenated. For non-zero represented data, the nonzero data is encoded as a function of the non-zero data value and the sign of the non-zero data value.

Abstract: A method for determining a scaled color map of a scaled image is described using the transformation of the original color map and the original image only, independently of the scaled image. A number of colors N in the original color map is determined; and provided N>Nmax, all colors in the original color map are reused in the scaled color map. If N<Nmin, the number of colors in the original color map is increased. Otherwise, the scaled color map is formed including: selecting a sub-set of colors in the original color map; increasing a number of colors in the selected sub-set; adding the resulting sub-set with increased number of colors to the original color map; and removing duplicate colors, wherein Nmin and Nmax are respective predetermined minimum and maximum thresholds for a number of colors in the original color map. A corresponding system is also provided.

Abstract: A circlet is defined as a compact angle representation expressing, at a given pixel comprised in the first image, the direction of change of pixel intensity. A method of locating a feature of interest includes the steps of: acquiring a first image of a feature of interest to a user; generating a learned circlet image from the first image; saving one or more sets of learned circlets corresponding to one or more selected probes; acquiring a second image of the feature of interest; generating a target circlet image from the second image; and correlating the learned circlet image and the target circlet image.

Abstract: A method implemented in a graphics engine for decoding image blocks to derive an original image is provided. The method comprises receiving at least one encoded image data block at a block decoder, the at least one encoded image data block comprising a plurality of codewords and a bitmap. The method further comprises determining a block type based on the plurality of codewords and selecting a decoder unit among a plurality of decoder units in accordance with the block type.

Abstract: An efficient rendering method for processing computer graphics in tiles. First a frame of data, typically at least one polygon, is received for rendering. While rendering a polygon the tile for the polygon is assigned so that it minimizes the number of the tiles needed for processing the polygon. It is possible to compute an offset value between the static tiles and the assigned tiles. If the offset value is computed, the rendering into an actual screen may be based on that.

Abstract: Encoding and decoding an image may be performed by setting a plurality of segments of a second color component block based on pixel values of a first color component block. The plurality of segments may be predicted by using different context pixels, and the second color component block may be encoded and decoded based on the predicted plurality of segments.

Abstract: Observation is performed with a fluorescence image having high quantitativeness by satisfactorily eliminating dependency on distance.

Abstract: Described is a technology by which an image is transcoded to a desired quality measure (e.g., PSNR). A quality measure of transcoded image data is checked against a desired quality measure, and if a desired quality measure is not achieved, a different quality level is iteratively provided to attempt to re-transcode the image until the desired quality measure is achieved.

Abstract: Described is a technology by which a raster graphics image file (e.g., a PNG) containing pixels having color component data and alpha channel data (e.g., RGBA data) is transcoded into a smaller Palette Indexed format with non-noticeable and/or virtually no loss. Hextrees are used to represent the pixels of the image, such as one hextree for each subset (segment) of the image's pixels, where alpha channel data distribution may be used to determine each segment. A palette containing sets of alpha and color values is generated from the hextrees, with the transcoded image data provided by representing the pixel data as indexes to the palette.

Abstract: A method and apparatus for processing an image signal includes an image signal encoding apparatus and an image signal decoding apparatus that use an independent luminance and chrominance image signal to reduce a crosstalk. The independent luminance and chrominance image signal may include a luminance signal and a chrominance signal. The image signal encoding apparatus and the image decoding apparatus may perform down-sampling or up-sampling on the chrominance signal. The image signal encoding apparatus and the image decoding apparatus may increase a compression efficiency of the independent luminance and chrominance image signal, by applying different quantization parameters and different bit-depths to the luminance signal and the chrominance signal, respectively.

Abstract: A system, a method and computer-readable media for encoding image data into a compressed bitstream. A mode selection component is configured to select a mode of operation for use in encoding image data. A spatial mode encoder is utilized when the mode selection component selects a spatial mode of operation. The spatial mode encoder is configured to encode the image data into packets by organizing the image data in accordance with a spatial partitioning. A frequency mode encoder is utilized when the mode selection component selects a frequency mode of operation. The frequency mode encoder is configured to encode the image data into packets by organizing the image data in accordance with a frequency ordering.

Abstract: A mixed code, and a method and apparatus for encoding the same are provided. The mixed code includes a first code image region storing a first code image obtained by encoding first information using color, shading, or a combination thereof, and a second code image region storing a second code image obtained by encoding second information using color, shading, or a combination thereof. The first code image and/or the second code image includes the results of encoding interpretation information, construction information, error control information, and code direction information. The mixed code is made by adjusting the difference in color and brightness between the first and second code images to a predetermined level and combining these images.

Abstract: A content compression/compression system and method are disclosed in which a pre-processing step is performed before any compression and a post-processing step is performed once a compressed piece of content is decompressed.

Abstract: In a color image processing apparatus, in a compression process section (an image compressing apparatus), when an original document is compressed, the edges of black texts and/or line drawings in the original document is detected, then a foreground layer (a first image) is generated in which the detected edges are expressed in the form of a binary image, and then lossless compression is performed on the foreground layer. Further, a background layer (a second image) is generated in which a density difference of the edges from the other parts in the original document is reduced, and then lossy compression is performed on the background layer. Then, these layers are combined into a compressed file.

Abstract: Apparatus, systems and methods for low latency remote display rendering using tile-based rendering systems are disclosed. In one implementation, a system includes a network interface and a content source coupled to the network interface. The content source being capable of rendering at least one tile of a tiled image, encoding the at least one tile, and providing the at least one encoded tile to the network interface before all tiles of the tiled image are rendered.

Abstract: In an image-encoding scheme, an input image is decomposed into several image blocks (600) comprising multiple image elements (610). The image blocks (600) are encoded into encoded block representations (700). In this encoding, color weights are assigned to the image elements (610) in the block (600) based on their relative positions in the block (600). At least two color codeword (710, 720, 730, 740) are determined, at least partly based on the color weights. These codewords (710, 720, 730, 740) are representations of at least two color values. The original colors of the image elements (610) are represented by color representations derivable from combinations of the at least two color values weighted by the assigned color weights.

Abstract: A mosaic image generating apparatus comprises: a segmenting unit which segments a target image into a plurality of blocks; a target image processing unit which calculates, as a target density value, an average density value of each basic color in each of the blocks; a determining unit which determines from the plurality of blocks a placement block on which the material image is to be placed, without being restricted by the image of the placement block; a calculating unit which calculates an average density value of each basic color in the material image; and a color correcting unit which performs a color correction on the material image such that the average density value of each basic color in the material image becomes the target density value of each basic color in the placement block while maintaining the density value distribution ratio of each basic color in the material image.

Abstract: A video compression system is disclosed that is optimized to take advantage of the types of redundancies typically occurring on computer screens and the types of video loss acceptable to real time interactive computer users. It automatically adapts to a wide variety of changing network bandwidth conditions and can accommodate any video resolution and an unlimited number of colors. The disclosed video compression encoder can be implemented with either hardware or software and it compresses the source video into a series of data packets that are a fixed length of 8 bits or more. Sequences of one or more of these packets create unique encoding “commands” that can be sent over any network and easily decoded (decompressed) with either software or hardware. The commands include 3 dimensional copying (horizontal, vertical and time) and unique efficiencies for screen segments that are comprised of only two colors (such as text).

Abstract: A signal processing apparatus includes a lower-level region data detecting section detecting, in luminance data of an input video signal, luminance data corresponding to a value in a set lower-level region, and a data converting section converting a value of the luminance data corresponding to the lower-level region to a set conversion value.

Abstract: A method of compressing a digital image defined by a plurality of pixel values in each of one or more channels includes adjusting each pixel value in each of the one or more channels by an average pixel value for that channel. The method further includes splitting each adjusted channel into one or more image blocks, and converting each image block into a frequency block that is a frequency-domain representation of that image block.

Abstract: A mixed code, and a method and apparatus for encoding the same are provided. The mixed code includes a first code image region storing a first code image obtained by encoding first information using color, shading, or a combination thereof, and a second code image region storing a second code image obtained by encoding second information using color, shading, or a combination thereof. The first code image and/or the second code image includes the results of encoding interpretation information, construction information, error control information, and code direction information. The mixed code is made by adjusting the difference in color and brightness between the first and second code images to a predetermined level and combining these images.

Abstract: A method of processing a digital image having a predetermined color pattern, includes converting the predetermined color pattern of the digital image into a converted digital image having a different desired color pattern; and using algorithms adapted for use with the desired color pattern for processing the converted digital image.

Abstract: This invention provides an apparatus which re-encodes encoded image data to generate encoded data at a higher compression ratio while suppressing any increase in the load of re-encoding. A decoder decodes each block stored in a storage, stores the decoding result in a buffer, and stores, in a holding unit, block information representing the location of the encoded data of each block in the storage. A discrimination unit discriminates a text area in the decoded image data. The image in the text area undergoes binarization and then character image data encoding. A fill-up unit replaces the value of a character/line art pixel in the text area with the average of non-character/line art pixel values. A re-encoder encodes the blocks after replacement. Inside the text area, a selector selects and outputs encoded data generated by the re-encoder. Outside the text area, the selector selects and outputs encoded data in the storage.

Abstract: A method for compressing an elevation map by means of digital image processing, according to which local and global parameters of an elevation map are calculated for sorting the elevation map into a corresponding category and the elevation map is categorized according to the calculated local and global parameters. Optimal parameters for compressing the elevation map are determined according to the calculated local and global parameters and according to the corresponding category and then the elevation map is compressed by applying on it digital image processing by using the determined optimal compression parameters.

Abstract: Disclosed are apparatus and methods for encoding/decoding sampled color images acquired by using a CFA according to an exemplary embodiment of the present invention. An apparatus for encoding color images includes: an acquiring unit that acquires color images of a first color coordinate system; a conversion unit that converts the acquired color images of the first color coordinate system into color images of a second color coordinate system by treating a preset number of pixels as a unit; and an encoding unit that encodes the converted color images of the second color coordinate system to generate a compressed image. By this configuration, the present invention can convert color images into the YUV color coordinate system without interpolation of color images, reduce the data size increase caused by conversion into the YUV color coordinate system, and prevent reduced coding efficiency.

Abstract: The present invention relates to a system and method for reducing image artifacts for a CMOS camera used as an optical detector for a line confocal fluorescent imager. The method for reducing image artifacts in a monochromatic image comprises subtracting RGB channel offset mismatch; and correcting random row offset for each row. Preferably, the method also comprises correcting random column offset and gain. Optionally, the method also comprises clipping of defective pixels, and/or subtracting dark current. When the monochromatic image is a fluorescence image, the method also comprises a step of compressing CMOS camera noise. Also provided are a system for reducing image artifacts in a monochromatic image from a CMOS camera, as well as an image artifact reduction system for a CMOS camera-based line confocal fluorescent microscope.

Abstract: A method is described to greatly improve the efficiency of and reduce the complexity of image compression when using single-sensor color imagers for video acquisition. The method in addition allows for this new image compression type to be compatible with existing video processing tools, improving the workflow for film and television production.

Abstract: A method, medium, and system compressing an image, and a method, medium, and system recovering an image. Values of colors of a pixel from among pixels making up an image are predicted from values of colors of a reference pixel corresponding to the pixel, and the predicted values of the colors of the pixel are corrected based on similarities in variations in color values in the image.

Abstract: A method of coding High Definition (HD) color pictures is described. The method divides the HD picture into individual bit planes of the three colors. The method then interleaves the bit planes such that bit planes of the three colors having the same significance are coded together. The method codes a block of the picture based on the bit distribution in corresponding groups of the corresponding bit planes of the three colors. The method performs a first level grouping of bits in a bit plane of an image and a second level grouping of the first level grouping bits of different color components within a group.

Abstract: The present invention relates to methods and arrangements for compressing images. The invention is based on the fact that edge blocks contain much information in one direction (across the edge), but very little information in the other direction (along the edge). By encoding edges explicitly, it is possible to obtain a high quality to a very low cost for many blocks. A block is encoded by first specifying the orientation of the edge in the block, and then specifying the profile across the edge using a function with a small number of parameters.

Abstract: One or more portions of a compound image may be classified as picture portions and at least one remaining portion of the compound image may be classified as a non-picture portion. A first layer of a layered image may be generated based on the picture portions of the compound image. The first layer may be compliant with a first image format. A second layer of the layered image may be generated based on the non-picture portion. The second layer may be compliant with a second image format that is different from the first image format. The first layer and the second layer may be sent to a web browser. The first format and the second format may be supported by the web browser.

Abstract: The invention facilitates adaptive compression of multi-level images, such as captured digital images of a whiteboard, etc., encoding a bitstream comprising a color image component and a black-and-white image component. Either or both of a color and a black-and-white image can be output to a user based on user desires, receiving device capabilities, etc.

Abstract: Methods, apparatus, and computer-readable storage media for tone mapping High Dynamic Range (HDR) images. An input HDR image is separated into luminance and color. Luminance is processed to obtain a base layer and a detail layer. The base layer is compressed according to a non-linear remapping function to reduce the dynamic range, and the detail layer is adjusted. The layers are combined to generate output luminance, and the output luminance and color are combined to generate an output image. A base layer compression technique may be used that analyzes the details and compresses the base layer accordingly to provide space at the top of the intensity scale where the details are displayed to thus generate output images that are visually better than images generated using conventional techniques. User interface elements may be provided via which a user may control one or more parameters of the tone mapping method.

Abstract: An apparatus detects an area specified based on a mark of a specific color out of three primary colors in pigment or three primary colors in light from an image. An other-color-information eliminating unit eliminates information of other colors from a tone level of the specific color by correcting the tone level of the specific color based on tone levels of two colors other than the specific color out of the three primary colors in pigment or the three primary colors in light. An area detecting unit detects the area by specifying the mark based on the tone level from which the information of other colors is eliminated.

Abstract: A method and apparatus for processing imager pixel signals to reduce noise. The processing includes receiving a target pixel signal, receiving at least one neighboring pixel signal, formulating a dynamic noise signal based at least in part on a value of the target pixel signal, and controlling a noise reduction operation using the dynamic noise signal.