摘要
对静止图像压缩标准JPEG进行分析和介绍,着重分析DCT在JPEG当中所起到的分离不同频率信息量的作用.通过DCT变换后不同频率信息被分离后经过量化实现图像的压缩,分析常用的快速DCT算法,快速DCT算法可以提高编码和解码的运算速度.另外,对JPEG标准中的编码部分进行介绍.
The image compressed standard JPEG was analyzed and introduced.In the standard,the procedure,DCT,played the important role of separating information by different frequencies.Compression was achieved by quantization after DCT.Otherwise,there were common fast DCT algorithms analyzed.These could be contibuttiong in efficient JPEG coder.At last,procedure coding of JPEG standard was introduced.
出处
《河南科技学院学报》
2010年第3期123-126,共4页
Journal of Henan Institute of Science and Technology(Natural Science Edition)
