Resolution Scalable Image Coding Through Recombining DCT Coefficients
The basic unit of image coding based on DCT was deemed as a complete entity.such as 8×8 code block in JPEG standard.therefore.the image coding based on DCT has large difficulty to implement resolution scalability.This paper proposed a resolution scalability scheme for image codec based on DCT.The encoder recombines the DCT coefficients according to their frequency.and the sub DCT code blocks are encoded interm of the image resolution.After decoding the coefficients form low.frequency to high.frequency.the decoder selects the IDCT models to reconstruct the image from low resolution to high resolution.Experimental results show that our method can get more flexible scalability than that of the methods of DWT base.
DCT Scalability Resolution Image Coding
Zongze Wu Shengli Xie Xie Zhang Kexin Zhang Yiguang Chen Jin Wang
国际会议
The International Conference Information Computing and Automation(2007国际信息计算与自动化会议)
成都
英文
813-816
2007-12-19（万方平台首次上网日期，不代表论文的发表时间）