Abstract: A color quantization method based on an HMMD color space and a multimedia searching method using the same in extracting color features for searching multimedia, to enable searching of multimedia data which has been quantized on different levels. A quantization method is optimized to be proper for various quantization levels so as to increase search performance in an HMMD color space. And the interoperability between color features quantized into different quantization levels is provided so as to search multimedia generated from different application programs and in which a quantization rule is defined so as to maintain high search performance. Preferably, the present invention provides a color quantization method for various levels, thereby enabling to achieve high search performance on maintaining interoperability. The present invention provides a multimedia search method enabling to measure the similarity between features quantized into different levels.

Abstract: A color quantization method based on an HMMD color space and a multimedia searching method using the same in extracting color features for searching multimedia, to enable searching of multimedia data which has been quantized on different levels. A quantization method is optimized to be proper for various quantization levels so as to increase search performance in an HMMD color space. And the interoperability between color features quantized into different quantization levels is provided so as to search multimedia generated from different application programs and in which a quantization rule is defined so as to maintain high search performance. Preferably, the present invention provides a color quantization method for various levels, thereby enabling to achieve high search performance on maintaining interoperability. The present invention provides a multimedia search method enabling to measure the similarity between features quantized into different levels.

Abstract: Disclosed is a face extraction method using color distortion information. The face extraction method includes extracting color distortion information from the given image, determining a skin color range in a color space using the extracted color distortion information, and performing the face extraction by extracting the skin color region using the determined skin color range. According to the method, the face is more accurately extracted by extracting the color distortion information of a still image or moving image when the image is given, and variably and automatically determining the skin color range suitable for the given image using the color distortion information.

Abstract: A color quantization method based on an HMMD color space and a multimedia searching method using the same in extracting color features for searching multimedia, to enable searching of multimedia data which has been quantized on different levels. A quantization method is optimized to be proper for various quantization levels so as to increase search performance in an HMMD color space. And the interoperability between color features quantized into different quantization levels is provided so as to search multimedia generated from different application programs and in which a quantization rule is defined so as to maintain high search performance. Preferably, the present invention provides a color quantization method for various levels, thereby enabling to achieve high search performance on maintaining interoperability. The present invention provides a multimedia search method enabling to measure the similarity between features quantized into different levels.

Abstract: A method of receiving or sending data. The data includes a chart (i.e., a histogram). The chart may be grouped into categories (i.e., bins). The order of the categories in the chart is according to the categories ability to discriminate.

Abstract: A multimedia retrieval method determines a descriptor weight for each of a plurality of descriptors used in a first combination to form a multimedia descriptor query. The method retrieves a group of first multimedia objects based on the descriptor weights corresponding to the first combination of descriptors.

Abstract: A color quantization method based on an HMMD color space and a multimedia searching method using the same in extracting color features for searching multimedia, to enable searching of multimedia data which has been quantized on different levels. A quantization method is optimized to be proper for various quantization levels so as to increase search performance in an HMMD color space. And the interoperability between color features quantized into different quantization levels is provided so as to search multimedia generated from different application programs and in which a quantization rule is defined so as to maintain high search performance. Preferably, the present invention provides a color quantization method for various levels, thereby enabling to achieve high search performance on maintaining interoperability. The present invention provides a multimedia search method enabling to measure the similarity between features quantized into different levels.

Abstract: There is provided a video communication system, which is capable of preventing damage or loss of video data. The video communication system includes: a video encoder for performing a data hiding to an error information provided from the video decoder, transmitting a processed error information to the video decoder, and performing an error concealment with reference to the error information; and the video decoder for extracting an information on an error frame, providing the extracted frame information to the video encoder, extracting the hidden data provided from the video encoder, and performing an error concealment with reference to the extracted hidden data.

Abstract: The present invention relates to methods and apparatus for quantizing a bin value of a histogram. A method according to the present invention can include dividing a bin value into N+1 regions using N threshold values; and dividing and quantizing each respective one of the divided regions uniformly and with greater resolution to yield smaller divisions as a region is nearer to zero. For example, the bin value can be divided into six regions using five non-uniform threshold values (th1, th2, th3, th4 and th5), which can be set to 0.000000001, 0.037, 0.08, 0.195, and 0.32, respectively. A first region (≦th1) can be regarded as one value. The second region through the sixth region can be uniformly divided, for example into 25 levels 20 levels, 35 levels, 35 levels and 140 levels, respectively. Accordingly, the bin value can be represented with 256 values.

Abstract: There are provided a system for automatically generating a multimedia data description scheme (DS), and a system for searching and browsing the multimedia data based on the multimedia data description scheme (DS), the generating system providing the information to describe the multimedia data, and the browsing system allowing to search and browse the desired data by a user based on the multimedia data description scheme (DS), and including DDL parsing means, binary format decoding means, data storage means, browser interface means, and so on.

Abstract: The present invention discloses an apparatus and method for searching a multimedia object which can simplify communication processes for the search by adding a feature description information database which exists in a server to a mobile terminal in the multimedia search of a server-client environment, especially a wireless communication environment. It is thus possible to efficiently use the system and cut down communication expenses.

Abstract: The present invention is provided a face detecting method depending on image that includes a step of obtaining a color group mainly distributed in a given image; a step of designating a color group corresponding to a human color in the obtained color groups; and a step of segmenting a portion composed with pixels corresponding to color group of a human color.

Abstract: The present invention relates to a video summary system for summarizing a video such that the video can be searched for the purpose of multimedia search and browsing. The present invention is to provide the video summary function based upon effective key frames using the process that is capable of being implemented easily, thereby obtaining an intelligent function at a low cost.

Abstract: A multimedia retrieval method determines a descriptor weight for each of a plurality of descriptors used in a first combination to form a multimedia descriptor query. The method retrieves a group of first multimedia objects based on the descriptor weights corresponding to the first combination of descriptors.

Abstract: The present invention relates to a method for retrieving multimedia using a histogram. The present invention configures a histogram that a relatively important bin comes at the lead of the access when accessing histogram data for retrieving the multimedia and retrieves multimedia data by using the progressive histogram. According to the present invention, there are several advantages that a high retrieval capacity can be guaranteed even though only front part in the order of transfer of the histogram is used and the efficiency and capacity of retrieval can be enhanced by using a progressive histogram optimized according to the feature at every multimedia.

Abstract: Disclosed is a face extraction method using color distortion information. The face extraction method includes extracting color distortion information from the given image, determining a skin color range in a color space using the extracted color distortion information, and performing the face extraction by extracting the skin color region using the determined skin color range. According to the method, the face is more accurately extracted by extracting the color distortion information of a still image or moving image when the image is given, and variably and automatically determining the skin color range suitable for the given image using the color distortion information.

Abstract: Disclosed is a scalable encoding method of a color histogram that produces an initial color histogram of relatively upper quantization level and produces a color histogram of relatively lower level using the initial color histogram. The scalable color histogram encoding method according to the present invention includes producing initial color histogram bins of the relatively upper level, and producing color histogram bins of relatively lower level by applying predetermined operators to the color histogram bins of the upper level, wherein the relatively upper level of color histogram bins including dummy bins and the relatively lower level of color histogram bins modified and produced from the upper level of color histogram bins at each intermediate encoding step have different encoding depths.

Abstract: The present invention relates to a multimedia query using a histogram, and more particularly, to a method for configuring a histogram which provides interoperability between histograms configured by non-uniform bin quantization using bits of a different number, and provides progressive bit processing for keeping a constant performance even when using the front parts of total bits of each bin value in the order of time series.

Abstract: A color quantization method based on an HMMD color space and a multimedia searching method using the same in extracting color features for searching multimedia, to enable searching of multimedia data which has been quantized on different levels. A quantization method is optimized to be proper for various quantization levels so as to increase search performance in an HMMD color space. And the interoperability between color features quantized into different quantization levels is provided so as to search multimedia generated from different application programs and in which a quantization rule is defined so as to maintain high search performance. Preferably, the present invention provides a color quantization method for various levels, thereby enabling to achieve high search performance on maintaining interoperability. The present invention provides a multimedia search method enabling to measure the similarity between features quantized into different levels.