对数字化资料进行编码，是通过光盘记录层面上的凹坑来实现的。
Digital data are encoded by means of pits on the recording layer of the disc.
本文首先对数字图像压缩的必要性和可行性进行了分析，并对传统压缩编码方法进行了比较和综述。
This paper analyzes the necessity and feasibility for images compression at first, and then makes a comparison and summarization for the traditional compression methods.
应用推荐