摘要
研究二维离散余弦变换与二维离散哈脱莱变换间的关系,基于二维哈脱莱变换算法,提出一种计算二维离散余弦变换系数的快速算法.该算法使二维离散余弦变换的算法复杂度大大降低,从而大幅度提高二维余弦变换的速度.
This paper studies the relation between the discrete cosine transform （DCT） and the discrete hartley transform （DHT）. A fast algorithm to calculate the coefficient on two dimension discrete cosine transform （2DDCT） is proposed based on the algorithm of DHT. The new algorithm reduces the complexity of the 2DDCT, and sharply enhances its velocity.
出处
《华侨大学学报（自然科学版）》
CAS
北大核心
2007年第2期131-134,共4页
Journal of Huaqiao University(Natural Science)
关键词
离散余弦变换
离散哈脱莱变换
复杂度
降低
快速
discrete cosine transform
discrete hartley transform
complexity
reduce
fast
