Compared to JPEG, JPEG2000 introduces DWT(Discret Wavelet Transform) to replace DCT, do uniform quantization to all the sub-bands, and transformation coefficients are encoded by Half-adaptation arithmetic encoding with context.
相比于JPEG,JPEG2000标准中引入DWT代替DCT,对各子带作均匀量化,之后用带有上下文的半自适应算术编码对变换系数进行编码。
参考来源 - JPEG2000编解码器的优化·2,447,543篇论文数据，部分数据来源于NoteExpress
To encode the labels and paths of XML documents, it uses a reverse arithmetic encoding method over distinct intervals.
为了编码 XML 文档的标签和路径，它在不同的间隔使用反向算术编码方法。
This paper proposes an energy threshold method based on wavelet transform and has achieved fairly good compression performance by referring to adaptive arithmetic encoding.
以小波变换为基础，提出了能量阈值法，并结合自适应算术编码方法对扰动数据进行压缩，获得了较好的压缩效果。
The system uses CCD for getting digital image, uses a 16 bit fix-point DSP to perform fast discret cosine transform(DCT) arithmetic and image encoding and realizes a fast image compression in end.
系统使用CCD获取原始数字图像数据，采用快速算法实现了核心的二维DCT变换，经过编码后，在一个16位定点DSP上实现了快速图像压缩。
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