摘要:
A variable-length encoder that feeds a Coded Block Pattern (CBP) as an input symbol to variable-length code output part. Coded symbol memory supplies CBPs in neighboring blocks as coding map table reference information to coding map table provider. Coding map table provider determines a coding map table used in coding of the CBP, based on these CBPs in the neighboring blocks, and provides a coding map table H4 to variable-length code output part. Variable-length coding table provider feeds a variable-length coding table to variable-length code output part. Then the coding target CBP is subjected to variable-length coding, and the resultant is outputted as coded data. This allows information source coding of coding symbols to be performed efficiently according to the coding condition and the property of image.
摘要:
An object of the present invention is to provide a document processing device and document processing method that can provide a search result satisfactory to a user with respect to WWW documents in which a number of links among WWW documents is low and a number of accesses by users is low. An access pattern collection unit 101 generates an access user vector uj of one WWW document Dj and an access user vector uje of another document Dje. A user similarity computing unit 105 computes a document similarity sim (uj, uje) which indicates a user similarity between the WWW document Dj and WWW document Dje. A keyword vector smoothing unit 106 acquires a smoothed keyword weight vector w′j by correcting a keyword weight vector wj in one document, using the computed document similarity sim (uj, uje). An rearranging unit 110 calculates an evaluation value B_SCORE for input information for searching, based on the smoothed keyword weight vector w′j.
摘要:
An object of the present invention is to express a predicted picture signal with light overheads, and to provide motion compensation of different pixel accuracy. A moving picture encoding device 20 according to the present invention includes a motion vector detection means 32 for detecting a motion vector of a predetermined area to be encoded in a frame picture, a prediction means 33c for predicting the motion vector of the predetermined area to be encoded by using an encoded motion vector of a predetermined area in the frame picture, a determination means 33d for determining whether or not the motion vector detected by the motion vector detection means 32 is a predetermined motion vector set in accordance with the motion vector predicted by the prediction means 33c, and a switching means 33e for switching a method of calculating a motion compensation value of the predetermined area to be encoded depending on whether or not the motion vector detected by the motion vector detection means 32 is the predetermined motion vector.
摘要:
To provide a small, inexpensive microphone system which can reduce extraneous vibration noise. The microphone system has a first microphone mechanism 1a which has a sound hole for introducing sound and a second microphone mechanism 1b which is enclosed without a sound hole. The first microphone mechanism 1a and the second microphone mechanism 1b have approximately the same inner structure and are coupled rigidly or formed integrally. The microphone system outputs a differential signal using either a processing circuit 7 which outputs differential signal based on output difference between the first microphone mechanism 1a and second microphone mechanism 1b or electrodes arranged in opposite directions.
摘要:
A method and an apparatus improving the coding efficiency by representing encoded data in a compact form by means of a pattern matching technique. A waveform vector similar to a partial signal waveform of an image signal in a predetermined group of waveform vectors is searched for. When a compression encoding is performed for information to identify the waveform vector searched for, similarity information, and a position in an image signal of the partial signal waveform in accordance with a predetermined encoding rule, the position in the image signal of the partial signal waveform is encoded through replacement with position information in a predetermined partial domain of the image signal. As a result, since the position in the image of the partial signal waveform that is the most similar to the waveform vector is encoded through replacement with the position information in the predetermined partial domain of the image signal, it is possible to represent the position more compactly.
摘要:
An identifier generating method according to the present invention has a canonicalization process step of subjecting document data to a canonicalization process to correct fluctuation of expression; and an identifier generating step of, based on all or part of document data having been subjected to the canonicalization process in the canonicalization process step, generating an identifier uniquely specifying the document data or part thereof. When the fluctuation of expression is corrected by the canonicalization process, prior to the generation of the identifier in this way, the XML documents or RDF documents with the same meaning are transformed into documents in the same expression, and the identical identifier can be generated for them by a function of generating an identifier from a sequence of characters, as typified by a one-way function.
摘要:
A method and an apparatus improving the coding efficiency by representing encoded data in a compact form by means of a pattern matching technique. A waveform vector similar to a partial signal waveform of an image signal in a predetermined group of waveform vectors is searched for. When a compression encoding is performed for information to identify the waveform vector searched for, similarity information, and a position in an image signal of the partial signal waveform in accordance with a predetermined encoding rule, the position in the image signal of the partial signal waveform is encoded through replacement with position information in a predetermined partial domain of the image signal. As a result; since the position in the image of the partial signal waveform that is the most similar to the waveform vector is encoded through replacement with the position information in the predetermined partial domain of the image signal, it is possible to represent the position more compactly.
摘要:
A signal encoding method according to the present invention is a signal encoding method of dividing a coding target signal as an object of coding into partition units and performing arithmetic coding based on probability-related information in the partition units, which comprises (1) a configuration information deriving step of analyzing the coding target signal in each of the partition units to derive as configuration information, information about an initial value of the probability-related information used for the arithmetic coding of the coding target signal in the partition unit in question; (2) a coding step of performing the arithmetic coding of the coding target signal in each of the partition units, based on the configuration information derived in the configuration information deriving step; and (3) a configuration information adding step of adding a header containing the configuration information to the arithmetic-coded signal in each of the partition units.
摘要:
A content distribution system includes plurality of cache server apparatus configured to obtain content from a distribution apparatus, and to store the content temporarily; a location information data storage unit configured to store location information data, which indicates location information of each cache server apparatus; a description data storage unit configured to store at least one item of description data, which includes the location information of a distribution apparatus; a converter configured to convert the location information of a distribution apparatus storing a requested content, which is included in description data, into location information of a specified cache server apparatus, by referring to the location information data; and a reception terminal apparatus configured to obtain the description data converted by the converter, and to receive the requested content from the specified cache server apparatus.
摘要:
A video coding method and apparatus realize that a calculation amount required to perform a converting process operation of compression formats can be reduced, and also deterioration in an image quality, which is caused by this compression format converting process operation, can be reduced. A video converting unit includes added information processing means for using added information contained in an input bit stream in coding operation. This added information involves a motion vector, a motion prediction difference signal, a quadrature converting coefficient, and a quantizing value.