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37 results about "Indexed color" patented technology

In computing, indexed color is a technique to manage digital images' colors in a limited fashion, in order to save computer memory and file storage, while speeding up display refresh and file transfers. It is a form of vector quantization compression.

Image compression method and apparatus, and image coding method and apparatus

There are provided an image coding method and apparatus and image compression method and apparatus which can properly compress a color document image with a high compression efficiency. First of all, a color reduction processing unit (102) converts each pixel of a color document image into an index assigned in correspondence with a color value, and generates color information (103) containing the number of pixels for each indexed color and an index color image (104). A color information sort unit (105) and the like determine, for example, a color value corresponding to an index of the maximum number of pixels as a background color. An order determination unit (113) determines an order. A binary image generation compression unit (109) generates a partial binary image for each index and compresses the binary image according to the order. A data integrating unit (111) generates compressed image (112) by integrating background data (108) and the compressed data of the partial binary image.
Owner:CANON KK

Methods and systems for controlling out-of-gamut memory and index colors

InactiveUS20050030560A1Improved out-of-gamut color controlEfficient and clean color renderingDigitally marking record carriersDigital computer detailsImaging processingGamut
Methods and systems in an image processing device for controlling colors that are located external to a gamut are disclosed. A plurality of color values can be automatically provided as input to said image processing device, wherein said image processing device is under a control of a particular dimensional order, typically a three-dimensional order, but alternatively can be a two-dimensional order. Next, an operation can be performed dynamically determining which color value among the plurality of color values has attained a gamut limit. Thereafter, the particular dimensional order can be automatically reduced, thereby providing improved control for colors that are located external to said gamut. The plurality of color values analyzed is generally associated with three colors—cyan, magenta, and yellow.
Owner:XEROX CORP

Image compression method using dynamic color index

A method for communicating an image section between a first computer and a second computer, the first computer adapted for remotely coupling to the second computer via a network. The method comprises determining, by the first computer, a color table comparison result for an input pixel value, the color table comparison result identifying one of (i) an indexed color value of a color table, the indexed color value approximating the input pixel value, or (ii) an absence in the color table of any color value approximating the input pixel value; generating, based on the color table comparison result, encoded data comprising one of a derivative of the input pixel value or an index for the indexed color value; communicating, to the second computer, the encoded data; and updating the color table according to the color table comparison result.
Owner:TERADICI CORP

Inspection apparatus, inspection method and storage medium

An inspection apparatus includes circuitry to acquire a first scanned image by scanning each recording media printed with a target image, acquire a second scanned image by scanning one recording medium printed with a color chart including a plurality of color patches, generate index color information including information of index colors having higher frequency of occurrence on the one recording medium for each of the color patches, generate color conversion information by associating each of the color patches and each of the index colors, generate a reference image for each of the index colors by performing a color conversion of the target image by applying the color conversion information, calculate a difference of a color value of each pixel configuring the first scanned image and a color value of each pixel of each of reference images, and inspect the printed matter based on a plurality of color difference values.
Owner:RICOH KK

Live Comics Capturing Camera

A method of preprocessing a plurality of raw video files has the steps of a user selecting the plurality of raw video files, creating an exposure histogram for raw video files on a predetermined interval, creating a color histogram for at least one of the plurality of raw video files on a predetermined interval, determining a camera movement velocity, determining a camera trajectory, determining an image sharpness for at least one of the plurality of raw video files on a predetermined interval, and determining a raw video location based GPS information embedded into the plurality of raw video files. In an embodiment, determining a scene location comprises the steps of indexing the color histogram, indexing the raw video location based on geographic proximity, grouping the scene location based the color histogram, grouping the scene location based on the raw video location and determining a plurality of scene groupings.
Owner:LOMICS INC

High performance radar display

A scan conversion is provided which allows the scan converter to work with data in its most convenient format in a radar memory. A displayable image is mirrored to a graphics memory simultaneously with the write portion of the radar memory of the scan conversion process. On every write to the radar memory, radar data is simultaneously converted to associated colors by indexing a color look-up table and writing the indexed color to the graphics memory. A simulated phosphor decay for the display is provided by decreasing the intensity of each pixel in the radar memory once each antenna scan and similarly decreasing the intensity of data in corresponding locations in the graphics memory to simulate the decay of a phosphor coated screen in a CRT display. The signals in the graphics memory are coupled to a display at a rate that simulates a display on a phosphor coated screen.
Owner:NORTHROP GRUMMAN SYST CORP

Image Generation Device and Image Generation Method

A calculation unit (58) references texture data (62) in a storage unit (60) and acquires texel information of index color formal An integral look-up table (64) has a structure containing a plurality of color look-up tables based on the detail degree (LOD) of the area to be plotted A look-up table reference unit (70) selectively references the color look-up table based on the LOD stored in the integral look-up table (64) according to the LOD value of the texel obtained by the LOD calculation unit (68), acquires color information corresponding to the index value of the texel, and outputs it to the calculation unit (58). The calculation unit (58) performs filter processing such as bi-linear interpolation according to the texel color information and outputs the texel information after the processing.
Owner:SONY COMPUTER ENTERTAINMENT INC

Image generation system, program, information storage medium and image generation method

An α-value αP1 corresponding to a Z-value of each pixel in an original image and an α-nonuniformity setting α-value a UP which is a nonuniform α-value in a virtual plane are synthesized into an α-value αP2. The color ICP of the original image and the fog color CP are synthesized into a fog image, based on the α-value αP2. A plurality of α-nonuniformity setting α-values provided for the virtual planes different in nonuniformity pattern are synthesized. The nonuniformity patterns are changed depending on the virtual camera information and time information. An α-value used to synthesize the α-nonuniformity setting α-values is set based on a Z-value of each pixel in the original image. A Z-value of each pixel in the original image is used as an index number of a lookup table and the index color texture mapping is applied to a virtual object to convert the Z-value into an α-value.
Owner:BANDAI NAMCO ENTERTAINMENT INC

Method and apparatus for image compression that employs multiple index color history buffers

A single source image encoder encodes more than one display stream, such as multiple display streams each for a different display or multiple display streams for the same display, using multiple index color history (ICH) buffers. As applied to a DSC encoder, the same DSC encoder is used to encode more than one DSC compliant display stream. Multiple encoded display bitstreams are output as multiple display data streams to a plurality of displays. Such a configuration can significantly reduce the area cost of an integrated circuit that employs an image encoder since additional encoders are eliminated.
Owner:ATI TECH INC

Weaving process of imitated cross-stitch brocade handicraft picture

The invention discloses a weaving process of an imitated cross-stitch brocade handicraft picture. The weaving process comprises the following steps that 1) a picture electronic draft is obtained; 2) computer drawing is conducted; 3) the picture is adjusted; 4) computer drawing modification is conducted; 5) the size of a picture frame is adjusted, pixels are computed according to the size of the length and the width, the thread count, the warp count and the weft count of the fabric meeting the actual production requirement, and therefore the image pixels are changed; 6) color separation processing is conducted through a mode tool, and the picture is converted to a forced index color picture of the fabric meeting the actual production requirements; 7) color changing processing is conducted through JCAD software, edge organizations are added, picking shuttles of 3-6 groups of wefts are generated according to the technological requirements, an organization table and an auxiliary organization table are filled, and a sample card file is set; 8) a computerized EP or WB file is generated; 9) the computerized file is input into a control computer in a producing department, and products meeting fabric production requirement are produced. The imitated cross-stitch brocade handicraft picture is similar to a cross-stitch, but not the cross stitch.
Owner:LINAN SHENGCHANG WEAVING

Generative image compression method and device suitable for text document

The invention relates to the field of information processing, in particular to a generation type image compression method and device suitable for text documents. The method comprises the following steps: (1) converting a text document into an RGB bitmap; (2) pre-constructing a color table according to the characteristics of the text document; (3) mapping and indexing the RGB bitmap, mapping the RGB value of each pixel with a color table, finding the closest color value in the color table, determining a corresponding index color, and recording an index number to form an index color image; and (4) compressing the image data area according to an LZW or other data compression algorithm to form a final image file. By means of the image compression method, reasonable filtering and denoising areadaptively conducted on the document official document, original character and color information is reserved as much as possible in the image scanning and compressing process, denoising is simple andhigh in speed, a document conversion algorithm is easy to program, and the image compression method is suitable for document storage work with the document official document type pixel low in color complexity.
Owner:北京数科网维技术有限责任公司

Method for preparing axminster carpet yarn

ActiveCN101956283ARealize refined productionReduce lossPile-fabric loomsYarnRelevant information
The invention relates to a method for preparing yarn for axminster carpet production, which employs an axminster carpet loom, computer software for pattern recognition and analysis, and an automatic winder for fixed-length winding control by a computer. The method comprises the following steps: analyzing and sorting patterns with index color in a PAT or BMP format produced by the axminster carpet loom via the computer software for pattern recognition and analysis, and setting and outputting the yarn length needed for each color at each position and relevant information according to the production process; and automatically winding the yarn length at each position by the automatic winder for controlling fixed length by the computer, and sticking identification labels with contents such as the yarn length and position information and the like. The method has the advantages of changing rough production in the background technology, realizing fine production of the axminster carpet yarn, greatly reducing yarn loss, improving production efficiency and lowering manufacturing cost.
Owner:ZHEJIANG ARTISTIC CARPETAB MFG

Image processing device, control method for image processing device, control program for image processing device, and recording medium in which control program is recorded

The present invention provides an image processing device capable of realizing appropriate color expression without requiring a large increase in data amount of image data for displaying a composite screen. A television broadcast receiver (1) includes a synthesis processing section (40) and an OSD processing section (24) for creating an OSD plane C as a composite screen in index color expression by combining an OSD plane U and OSD plane L, which are display screens in the index color expression. By the processing section (40) and the OSD processing section (24), the OSD plane C for attaining a display effect in which the OSD plane U and OSD plane L are superimposed is created.
Owner:SHARP KK

Image processing apparatus, recording medium having image processing program recorded thereon, and image processing method

A multifunction peripheral includes a color number conversion determiner. The color number conversion determiner determines whether it is appropriate to perform either an index color process or a full-color process based on a color distribution degree, which is a distribution degree of pixel values of the respective sets of pixel data included in input image data, a photograph area ratio, which is a ratio of photograph area pixel data forming a photograph area to the pixel data, and a color uniformity area ratio, which is a ratio of white base area pixel data forming a white base area to the pixel data.
Owner:SHARP KK

Method for displaying on-screen display

A method for displaying an on-screen display (OSD) is disclosed. An OSD with a first and second icons superimposed thereon is firstly rendered with a first color palette. The first and second icons are overlapped. The first icon is rendered with a second color palette and superposed over the originally displayed first icon. The second color palette is substantially similar to the first color palette but replaces an indexed color of the first color palette corresponding to the background color of the originally displayed first icon with a transparent color and another indexed color of the first color palette corresponding to the foreground color of the originally displayed first icon with a non-color color. The second icon is rendered with the first color palette and superposed over the originally displayed second icon.
Owner:HON HAI PRECISION IND CO LTD

Method and apparatus for displaying picture content in application, and storage medium

The present disclosure describes a method, an apparatus, and a non-transitory computer readable storage medium for displaying pictures in an application. The method includes obtaining original picture information and performing an indexing operation on the original picture information to obtain an indexed object. The method also includes performing a de-indexing operation on the indexed object, and establishing a bitmap object of an index color format according to a color table and a pixel buffer in the indexed object. The method further includes displaying the picture in the application by using the bitmap object. By using the present disclosure, a memory occupation rate in an electronic device can be effectively reduced, thereby solving the existing problem and improving the functionality and stability of the application in the electronic device.
Owner:TENCENT TECH (SHENZHEN) CO LTD

Method and apparatus for using a color table scheme for displaying information on either color or monochrome display

A method and system of determining the screen capability and rendering the appropriate display attribute is herein described. The present invention performs this task by using a color table, which contains a list of object types and a corresponding list of display attributes. The application program obtains the correct display attribute for the object by calling the color table, giving it an identifier of the object. The color table is indexed by the identifier of the object and a screen capability flag that is obtained, in one embodiment, from the operating system. The color table provides the display attribute for the specified object based on the screen capability flag. Advantageously, the application program does not need to know the computer's display capability. Furthermore, the application program needs only one piece of computer code, regardless of the number of display capabilities which are possible. Thus, memory space in the palmtop is conserved. In another embodiment of the present invention, the application program is allowed to modify the default values of the display attributes in the color table. Thus, an application program could use its own color to display an object if the default color is undesirable.
Owner:ACCESS SYSTEMS AMERICAS

Color temperature control method and system for LED desk lamp

The invention discloses a color temperature control method and system for an LED desk lamp. The method includes obtaining a face image of a user; identifying the mood of the user according to the faceimage; determining the mood index of the user through a mood-mood index comparison table according to the mood of the user; determining color temperature information through a mood index-color temperature library according to the mood index of the user; and controlling the color temperature of an LED desk lamp according to the color temperature. The system and method can perform camera shooting on the face of the user, identify the facial expression of the user and judge the mood of the user, so that the LED desk lamp can be controlled to generate white light with a color temperature matchingthe mood of the user.
Owner:ZHEJIANG FORESTRY UNIVERSITY

Weaving process of imitated cross-stitch brocade handicraft picture

The invention discloses a weaving process of an imitated cross-stitch brocade handicraft picture. The weaving process comprises the following steps that 1) a picture electronic draft is obtained; 2) computer drawing is conducted; 3) the picture is adjusted; 4) computer drawing modification is conducted; 5) the size of a picture frame is adjusted, pixels are computed according to the size of the length and the width, the thread count, the warp count and the weft count of the fabric meeting the actual production requirement, and therefore the image pixels are changed; 6) color separation processing is conducted through a mode tool, and the picture is converted to a forced index color picture of the fabric meeting the actual production requirements; 7) color changing processing is conducted through JCAD software, edge organizations are added, picking shuttles of 3-6 groups of wefts are generated according to the technological requirements, an organization table and an auxiliary organization table are filled, and a sample card file is set; 8) a computerized EP or WB file is generated; 9) the computerized file is input into a control computer in a producing department, and products meeting fabric production requirement are produced. The imitated cross-stitch brocade handicraft picture is similar to a cross-stitch, but not the cross stitch.
Owner:LINAN SHENGCHANG WEAVING

Book arranging method with fore-edge indexes

The invention relates to a book arranging method with fore-edge indexes. Fast check words are arranged at or around the fore-edge of a book, and various stages of long index marks are presented at the fore-edge of the book in a folding state; the index marks are formed by staking and presenting a plurality of index frames respectively made at the fore-edges of inner pages, and the index frame of the same index mark has the same pattern position and the same shape. A plurality of primary index marks form a primary sequence index, a plurality of secondary index marks form a secondary sequence index, and so repeated. The secondary sequence index is submitted to and distinguishes any sequence item and an inner page of the primary sequence index, a tertiary sequence index is submitted to and distinguishes any sequence item and an inner page of the secondary sequence index, and so repeated. The fast check words correspond to various stages of index marks which are distinguished by an index shape arranging method, an index size arranging method, an index color arranging method, an index position arranging method or an index arranging method, and the like. A reader finds various stages of index marks which correspond to the fast check words according to a catalog so as to rapidly open the pages with the index contents. The invention provides a fast check method which facilitates platemaking and bookbinding and is faster than the prior art.
Owner:孙晓靖
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