Title :
A fast algorithm of 4-point floating DCT in image/video compression
Author :
Tong, Kai ; Gu, YingKe ; Li, GuoLin ; Xie, Xiang ; Liu, ShouHao ; Zhao, Kai ; Wang, ZhiHua
Author_Institution :
Dept. of Electron. Eng., Tsinghua Univ., Beijing, China
Abstract :
This paper proposed a new improved fast floating 4-point discrete cosine transform (DCT) algorithm applied in image compression based on JPEG. This 1-D 4-point DCT algorithm employs only 1 multiplication without increasing the number of add operation. This new algorithm saves 50% multiplications of the fastest algorithm proposed in the past.
Keywords :
data compression; discrete cosine transforms; video coding; 1D 4-point DCT algorithm; 4-point floating DCT; JPEG; add operation; fast floating 4-point discrete cosine transform algorithm; image compression; video compression; Computer architecture; Discrete cosine transforms; Image coding; Quantization; Signal processing algorithms; Transform coding; Video coding;
Conference_Titel :
Audio, Language and Image Processing (ICALIP), 2012 International Conference on
Conference_Location :
Shanghai
Print_ISBN :
978-1-4673-0173-2
DOI :
10.1109/ICALIP.2012.6376736
