188 results about "Color index" patented technology

A color information creating part calculates the average color of captured image data in units of macro blocks, and determines to which color index the average color of each macro block corresponds. Color arrangement information formed by associating color information with the macro blocks is stored in a color index memory. A histogram creating part creates color histograms representative of the distribution of macro blocks added with color information corresponding to aimed color indexes. Based on the color arrangement information and the color histograms, a color application execution part recognizes objects, surroundings, or the situation of a driver's own vehicle without performing area splitting (shape acquisition) of an image.

Method for efficient image distribution and management Invention employs compact image data structures and packet delivery techniques for Internet applications. Images on a Web page are inefficiently stored, using a single image per file. Invention uses clustering to merge similar images into a single file in order to exploit the redundancy between images. A 30-50% image data size reduction is achieved by eliminating the redundancies of color indexes. A metadata file permits an easy extraction of images. Present invention permits a more efficient use of the cache, since a shorter list of cache references is required. Packet and transmission delays are reduced by 50% eliminating redundant TCP / IP headers and connection time. Present invention eliminates redundancy and provides valuable benefits for optimizing packet delivery in IP networks by reducing latency and minimizing the bandwidth requirements.

A universal file format for providing digital rich ink data documents. Digital rich ink data is hidden among the ink image data otherwise stored in a widely-accepted image file format. For example, depending on the type of file, data can be concealed in the least significant bit or bits of pixel information, or stored in-different color indexes of a palette that result in the same color output. In other file types, digital rich ink data may be appended after the end of file marker, or placed in a comment area. When such a file is accessed, computing devices capable of handling rich ink data recognize and extract the rich ink data from the file, while devices incapable of recognizing the format are still able to display the ordinary ink data. Two file formats for describing the arrangement of rich ink data are also provided.

The invention discloses a method for coding a hybrid image efficiently. The method comprises the following steps of: applying base color and an index table coding method to interframe coding of the hybrid image; sequencing a base color value obtained by clustering matching blocks and a base color value obtained by clustering the current coding blocks during transmission of the base color; correspondingly making a difference to obtain a residual value of the base color; transmitting a difference value by using exponential Golomb coding; adaptively selecting a transmission mode of the base color by taking the minimum code rate as a principle and adopting an equal length coding method of the base color during the transmission of the base color; marking the transmission code with a bite; and obtaining a base color index of each pixel in a prediction block according to the value of each pixel in the prediction block, the base color value of the current coding block and the principle of minimum Euclidean distance during the transmission of an index map, taking the base color index of each pixel as a reference index of the current coding block, and using a bite for showing whether the index of each pixel is matched with the reference index of a corresponding position.

An apparatus is configured to perform a method for screen content encoding. The method includes deriving a palette table and a color index map based on a coding unit (CU). The method also includes encoding the palette table and encoding the color index map. The method further includes combining the encoded palette table and the encoded color index map for transmission to a receiver, where the palette table and index map are decoded to reconstruct a pixel block.

An elevator control system (18) provides elevator dispatch and door control based on passenger data received from a video processing device (12). The video processing device (12) includes a video processor (14) connected to receive video input from at least one video camera (10) and memory (16). The video processor (14) anonymously monitors passengers using color index analysis of each passenger. Based on the monitored position of each passenger, video process (14) calculates passenger data parameters such as location, direction, speed and estimated time of arrival at an elevator door, and provides one or more of the passenger data parameters to elevator control system (18). Based in part on the passenger data received, elevator controller (18) provides elevator dispatch, elevator door control, and security functions.

An elevator control system (18) provides elevator dispatch and door control based on passenger data received from a video processing device (12). The video processing device (12) includes a video processor (14) connected to receive video input from at least one video camera (10) and memory (16). The video processor (14) anonymously monitors passengers using color index analysis of each passenger. Based on the monitored position of each passenger, video process (14) calculates passenger data parameters such as location, direction, speed and estimated time of arrival at an elevator door, and provides one or more of the passenger data parameters to elevator control system (18). Based in part on the passenger data received, elevator controller (18) provides elevator dispatch, elevator door control, and security functions.

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.

The invention discloses a paper-making method recreated tobacco leaf appearance color detection method, The sample color uniformity is presented by the absolute value of the difference between the single-piece sample measurement value and the mean value and the color difference of the sample to be tested is represented by the absolute value of the difference between the sample lightness value mean value, the mean value of the red and green value, the mean value of the yellow and blue value and the standard measurement value. If two or more color uniformity index values do not accord with the specification: Delta Ln<=2.0, Delta a n<=1.5, Delta bn <=1.5, thus the color uniformity is unqualified. If one or more color differential values do not accord with the specification: DeltaL<=2.5,Deltaa<=1.5,Deltab<=1.5, thus the color difference is unqualified. The said method can effectively prevent the misjudgement due to the human factor of the sense organ, thus the appearance color index is changed into quantified data index from qualitative description, therefore the accuracy and consistency of the judgement can be ensured.

A method and apparatus for palette coding of a block of video data using multiple color index scanning orders are disclosed. The system determines a scanning direction for the current block, where the scanning direction is selected from a scan group consisting of at least one non-horizontal scan. If the non-horizontal scan is used, the color indices of the current block are encoded or decoded according to the non-horizontal scan using a palette or a triplet palette. In another embodiment, the system uses a transposed color index map to code the color indices.

The present invention intends to provide a method for liveliness detection and fitness measurement using information optically extracted from a fingertip. For liveliness detection, the present method examines the change in a color index of a finger at its touching portion measured while the finger is being pressed onto an inspection surface and while the finger is released from the same surface. If the change is equal to or larger than a predetermined value, the finger is regarded as a live finger. For fitness measurement, an index indicative of the stiffness of the blood vessel of the finger is obtained from the change in the color index of the finger at its touching portion against the change in the contact area of the finger while the finger is being pressed onto the inspection surface.

The invention discloses an intelligent face health degree identification and evaluation method. The method comprises: an image acquisition stage: collecting a face image for detecting acnes and colorspots and assessing the health degree of the face; and an acne and color spot detection stage: converting the face image into an HSV color gamut from an RGB color gamut, and detecting acne through a binary image of the maximum brightness value image, iteratively calculating the threshold values of the segmented color spot lesion area and the skin area of the face image through an ISODATA clustering algorithm to obtain the edge contour of the face color spot and detect the color spot; quantitative measurement of acne and color spots: using the ROI to select acne in a framing manner, calculatingthe number of acnes, measuring color indexes of a color spot area and color indexes of color spots, and divides the color indexes into a serious degree, a common degree and a slight degree through the color spot area and the color depth; face health degree assessment: calculating the face acne score according to the acne number and the distribution condition, calculating the face color spot scoreaccording to the color spot number, the degree and the distribution condition, and comprehensively obtaining the face health degree score. According to the method, the health degree of the human faceis comprehensively judged through the two indexes of acne and color spots, the skin defects of the human face are rapidly and accurately detected, and quantitative indexes are provided.

For each image of a set of images, the each image is characterized with a set of fixed-orientation texture descriptors and a set of color descriptors. The set of images is indexed in a color index and a texture index. Similarly, a query image is characterized with a set of fixed-orientation texture descriptors. The set of fixed orientation texture descriptors of the query image includes a set of fixed orientation descriptors for each of a set of rotated query images, and a set of color descriptors of the query image. A rotated local Bag-of-Features (BoF) operation is performed upon the set of rotated query images and the set of images. Each of the set of images is ranked based on the rotated local Bag-of-Features operation.

An image processing apparatus includes: a setting unit that sets a color index representing a category to which an achromatic color and at least one chromatic color that are included in image data belong; an adjustment unit that adjusts a color tone of the achromatic color belonging to the category that is indicated by the set color index in accordance with a hue of the chromatic color belonging to the category; and a generation unit that generates image data including the chromatic color belonging to the category and the achromatic color of which the color tone is adjusted by the adjustment unit.

A method of coding a block of video data using palette coding is disclosed. According to the present invention, when a previous block is available, the system receives first information related to a previous palette set corresponding to previous palettes / triplet palette, and second information related to a previous palette predictor set corresponding to previous palette predictors / triplet-palette predictors associated with the previous block. The system then derives a current palette predictor set corresponding to current palette predictors / triplet-palette predictor associated with the current block based on the previous palette set and the previous palette predictor set by including at least one unused color or triplet of the previous palette predictor set in the current palette predictor set. A current palette set corresponding to current palettes / triplet-palette associated with the current block is derived from the current palette predictor set for palette encoding or decoding.

The invention relates to the technical field of production of papermaking-reconstituted tobacco, in particular to a method for regulating the color of the surface of the papermaking-reconstituted tobacco. The method comprises the steps of (1) adding pigment and brightness additives to a tobacco concentrated solution according to color indexes expected to be presented by the reconstituted tobacco after pigment regulation; (2) coating base sheets of the reconstituted tobacco with the tobacco concentrated solution obtained from the step (1); (3) processing the base sheets obtained from the step (2) in an oven and obtaining finished products of the reconstituted tobacco after water balancing is conducted under constant temperature and humidity. According to the method for regulating the color of the surface of the papermaking-reconstituted tobacco, the probability that production requirements can not be met due to unreasonable adding of pigment is reduced, and a systematic and unprecedented breakthrough is realized in regulation of the color of the surface of the reconstituted tobacco.

There is provided an idling stop device. An ECU sets a lighting color index by recognizing a lighting color of a traffic light in front of a vehicle based upon external environment captured by an onboard camera, sets a distance index based upon a distance between the traffic light and a vehicle just in front of the vehicle, and sets a brake index based upon whether a brake lamp of the vehicle just in front of the vehicle is turned on or not. The ECU adds up these indices to obtain an ISS general index, sets a basic ISS speed based upon the ISS general index, and sets an ISS start speed based upon the basic ISS speed and a mode-based coefficient set based upon an engine mode.

The invention provides an image coding method, an image decoding method, an image coding device and an image decoding device for an embedded system. The image coding method comprises the following steps of: mapping a color value or a color index of each pixel in an image in which pixels are arranged in M rows*N columns into a color unit, wherein the color unit comprises a plurality of bytes and is used for storing the color value or the color index of the pixel; storing values of M and N in a header data set; connecting the color units sequentially to form a one-dimensional color unit set; and merging the color unit set and the header data set to form image coding data. The image coding method can be widely applied to the image processing process of the embedded system, and the problem that hardware resources of the embedded system in the image processing process are limit is solved.

A method of coding a block of video data using palette coding is disclosed. According to the present invention, when a previous block is available, the system receives first information related to a previous palette set corresponding to previous palettes / triplet palette, and second information related to a previous palette predictor set corresponding to previous palette predictors / triplet-palette predictors associated with the previous block. The system then derives a current palette predictor set corresponding to current palette predictors / triplet-palette predictor associated with the current block based on the previous palette set and the previous palette predictor set by including at least one unused color or triplet of the previous palette predictor set in the current palette predictor set. A current palette set corresponding to current palettes / triplet-palette associated with the current block is derived from the current palette predictor set for palette encoding or decoding.

The invention improves the refresh rate and minimizes the memory for display when reproducing a color image. A color image encoding device has a creation device which counts the number of colors used in color image data and creates a global palette which lists corresponding indexes when the number of colors is a specified value or less, a block division device which divides the color image data into a plurality of blocks, a local palette creation device which creates a local palette which lists indexes in the global palette when the number of colors in a block is less than the number of colors in the global palette, and a color index assigning device which assigns the indexes in the global palette to the input pixels when the number of colors is the same as the number of colors in the global palette, and assigns the indexes in the local palette to the input pixels when the numbers of colors is different from the number of colors in the global palette.

A method for evaluating quality of tone-mapping image based on exposure analysis is provided, which explores the exposure properties on each area of the high dynamic range image utilizing the pre-exposure method and divides the high dynamic range image into three parts of an easy overexposed area, an easy underexposed area and an easy natural-exposed area, wherein different quality characteristics are extracted in different areas, which is capable of ensuring that the follow-up quality characteristic extraction is more targeted. The present invention takes the difference of distortion between the tone-mapping image and the conventional image into account, and extracts image characteristics such as the abnormal exposure rate, the underexposed residual energy, the overexposed residual energy and the exposure color index, so as to accurately reflect the quality degradation of the tone-mapping image.

The invention discloses a tone-mapped image quality evaluation method based on exposure analysis. The method comprises the following steps: exploring exposure properties of each area in a high dynamic range image by adopting a pre-exposure mode, dividing the high dynamic range image into an area that is easy to cause overexposure, an area that is easy to cause underexposure, and an area that is easy to have normal exposure, and extracting different quality features in different areas to ensure that the subsequent quality feature extraction can be more targeted. According to the tone-mapped image quality evaluation method, in consideration of the difference of distortion forms in a tone-mapped image and a traditional image, image features such as the exposure exception rate, underexposure residual energy, overexposure residual energy and exposure color indexes are extracted in the tone-mapped image based on exposure area segmentation, and thus the quality reduction degree of the tone-mapped image can be reflected more accurately; and the correlation between the obtained objective evaluation results and the subjective perception of human eyes can be effectively improved from two aspects of exposure area segmentation and quality feature extraction.

Video data, e.g., screen content video data may be palette coded. A palette table including one or more color indices may be produced. A color index may correspond to one color. A palette index map may be created that maps one or more pixels of the v ideo data to a color index in the palette table, or a color that may be explicitly coded. A. palette index map prediction data may be generated that includes data that indicates values in the palette index map associated with at least some portions of the video data that are generated in a traverse scan order in which a scan line is scanned in an opposite direction of a preceding parallel scan line.

The invention discloses a graphic interchange format (GIF) image encryption method based on a compressed encoding and belongs to the field of digital image encryption. According to an algorithm, encryption is performed by selecting color lists of the GIF image and lempel-ziv-welch (LZW) compressed encoding data. When the color lists are encrypted, a key stream is utilized to mix up values of color components in the color lists, and thereby information of plaintext image color indexes can be hidden; when the LZW encoding data is encrypted, a dictionary used by encoding is subjected to scrambling when dictionary entries are matched according to the features of the LZW compression, so that the scrambling algorithm can self-adaptively and dynamically adjust the encryption intensity according to plaintext features, and the encryption efficiency and the safety are good. According to the GIF image encryption method based on compressed encoding, the GIF compressed encoding design encryption algorithm is combined, simultaneously the safety of the GIF image color indexes and the image compressed data is considered, the GIF image color indexes and the image compressed data are respectively encrypted, and good safety is achieved. After the encryption operation is introduced, the GIF image compressed effect is not affected, and the format compatibility of original GIF images is maintained.

A method and device for coding screen content into a bitstream by selecting a color palette table for a coding unit (CU) of screen content, creating a color index map having indices for the coding unit (CU), and encoding the selected color palette table and the color index map for the CU into a bitstream.

The disclosure is directed to a method of color palette coding and an electronic device using the same method. The proposed method would include not limited to encoding, by using a processor, a bit stream to represent a color of a coding unit and storing the bit stream in a storage medium or transmitting the bit stream. The bit stream would include not limited to a binary bit representing a run flag, a N binary bit sequence representing up to 2N major colors in a coding unit with each of the possible values of the N binary bit sequence representing an unique major color index of N major color indices, and a M binary bit sequence representing up to 2M extended colors with each of the possible values of the M binary bit sequence representing an unique extended color index of M extended color indices.

The invention relates to the LED domain, especially to a LED unit containing fluorescent powder of alkaline earth borophosphate. The LED unit of this invention consists of violet LED grain and rare-earth phosphor, in which the said rare-earth phosphor is alkaline earth borophosphate with a chemical composition expression of (Sr1-xEu2+x)6BmPnO20,0x=0.2,0m1.5, 4.5n5.5 and the said violet LED grain is inorganic semiconductor LED grain of GaN base in which the emitted near ultraviolet lights lie in area between 330nm and 420nm receiving priority in area between 350nm and 410nm. The said alkaline earth borophosphate can be added with other fluorescent powder to constitute bi-component rare-earth phosphor or tri-component rare-earth phosphor to prepare white LED unit. The LED unit of this invention is of high stability and good compatibility, suitable for batch process, and can be used in display and decorative lighting area. The packed white LED unit is of reasonable spectral energy distribution, which can make up for shortcomings of low color index of white light of traditional white LED unit, and has high color index.

The invention discloses an oscilloscope digit fluorescence display method. The method comprises the following steps: 1, presetting a control apparatus including an FPGA, an SRAM, an ARM chip and an LCD unit; 2, prestoring a color index table in the ARM chip including a transverse basic unit and a longitudinal basic unit, wherein the transverse basic unit and the longitudinal basic unit each comprises display point positions, channel numbers and color index values; 3, the FPGA acquiring electric signals, generating drawing data, transmitting the drawing data to the SRAM, the SRAM receiving the drawing data, and after a drawing data index table is generated and stored, the FPGA sending interruption signals to the ARM chip; 4, the ARM chip reading the drawing data index table, analyzing the drawing data index table, finding corresponding 24-bit color information and uploading the 24-bit color information to the LCD unit; and 5, the LCD unit displaying the 24-bit color information and prestoring and mapping display data into a memory of the ARM chip. Further disclosed is a control apparatus. According to the invention, only one SRAM is needed, the requirement for the FPGA is not high, and the cost is greatly decreased.

The invention discloses a paper color online detecting system for a paper production line, which comprises an online detecting system, a scanning frame and a control system which are used for drivingthe online detecting system to move, a computer data processing system, wherein the control system receives signals for controlling electrical structures in the scanning frame through an interface, transmits the signals to a drive unit of the scanning frame through an interface, and drives devices supporting and installing in the online detecting system to move; the control system performs data communication with the online detecting system, receives detection feedback signals of the online detecting system, and transmits the feedback signals to the computer data processing system for processing. The invention has the beneficial effect of in-time and accurately detecting paper color indexes in production process, performing non-contact detection on detection sensors and papers, automatically calibrating with a built-in color plate, having special paper stabilizing technology and functions of dynamic data real-time display, over-error detection alarm, recording detection results of production process, and establishment of a database for inquiry.