摘要
为了给P帧和B帧作参考帧,保证编码序列在解码时能正确地开始和进行,H.264中的I帧编码是一种独立消除空间冗余度的适度图像压缩算法,没有使用帧间预测和补偿。在某种程度上,I帧编码可以被认为是一种静态图像编码。JPEG2000是ISO推出的新一代静态图像压缩标准。通过对目前这两种最先进的图像压缩标准的分析和比较,得出在较低的码率下,针对小尺度图像,H.264的帧内压缩有着比JPEG2000更好的性能,而在其他条件下JPEG2000的算法占优。
In order to be the P frame＇s and B frame＇s reference pictures and provide access points to the coded sequence where decoding can begin and continue correctly, the intra coding （I Frame） in H. 264 is a moderate compression algorithm to reduce spatial redundancy independently, without making use of interframe prediction and compensation. To some extent, the intra-frame mode can be seen as a still-image compression standard. JPEG2000 is a state-of-the-art still image compression standard provided by ISO. This paper compares the two new still image compression methods and concludes that H. 264 partly outperforms its competitor at very low bit rates and for small picture sizes, and otherwise JPEG2000 has better performance.
出处
《计算机工程与科学》
CSCD
2005年第12期34-35,50,共3页
Computer Engineering & Science
