DCT

discrete cosine transform
離散コサイン変換. (ファクシミリの)画像データ圧縮アルゴリズム.
discrete cosine transform; a complex algorithm for fax compression by JPEG(Joint Photographic Experts Group), and for HDTV(high definition television) in (US); ref. VQ(vector-quantization) technology for HDTV encoding

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