摘要
图像DCT变换是图像压缩的一项重要技术,如何准确、快速地进行图像压缩一直是国内外研究的热点。现研究了两种二维离散余弦变换(DCT)的方法。在DCT算法结构上利用了变换的可分离性和行列的可分解性,并采用行列分解的方法将二维DCT转换为2个串行的一维DCT实现。
The image DCT transform technique is an important technique in the field of image compression. How to compress the image accurately and fast has been a research focus both at home and abroad all the time. In this paper, two methods which are used to achieve two-dimensional discrete cosine transform （DCT） have been studied. Two-dimensional DCT is converted to two serial one-dimensional DCT by using separability of transform and resolvability of row-column.
出处
《信息技术》
2008年第11期118-120,共3页
Information Technology
