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dcts

于 2012-06-23 发布 文件大小:1KB
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  dct变换离散余弦变换(Discrete Cosine Transform,简称DCT变换)是一种与傅立叶变换紧密相关的数学运算。在傅立叶级数展开式中,如果被展开的函数是实偶函数,那么其傅立叶级数中只包含余弦项,再将其离散化可导出余弦变换(Discrete Cosine Transform)

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