ENCODING APPARATUS AND ENCODING METHOD

专利名称：ENCODING APPARATUS AND ENCODING

METHOD

发明人：Takuya KAWASHIMA,Masahiro OSHIKIRI申请号：US15263534申请日：20160913

公开号：US20160379654A1公开日：20161229

专利附图：

摘要：A coding apparatus, including a memory and a processor that, when executinginstructions stored in the memory, performs operations including encoding low-bandtransform coefficients in a first band and calculating, for each extension-band subband

obtained by splitting an extension band, a threshold amplitude based on an analysis ofstatistics on extension-band transform coefficients included in the subband. Theprocessor further compares, for each of the extension-band subbands, an amplitude ofthe extension-band transform coefficients with the threshold amplitude to extract arepresentative transform coefficient, updates, when a number of the extracted

representative transform coefficients is less than a predetermined number, the thresholdamplitude, performs processing to again extract a transform coefficient using theupdated threshold amplitude, calculates, for each of the extension-band subbands, avalue of correlation between the representative transform coefficient and a normalizedencoded low-band transform coefficient.

申请人：PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA

地址：Torrance CA US

国籍：US

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