The performance of wavelet transformation is better than DCT transformation in static 2d picture, so wavelet transformation is adopt in JPEG2000 and MPEG-4 international standards.
静态图像的小波变换方法性能优于DCT变换方法，因而被最新的JPEG2000和MPEG - 4国际标准所采纳。
Watermarking embedding algorithm based on auditory masking is proposed in this paper, which embeds watermarking based on masking threshold in low-band coefficients of DCT transformation.
文中提出一种基于听觉掩蔽效应的音频数字水印算法，根据掩蔽阈值在DCT低频系数中嵌入水印。
The Method based on the DCT transformation has been the center technology for most of the digital image and video coding standards, since it features on good de-correlation and energy compression.
基于分块dct变换的编码方法，由于具有良好的去相关性和能量压缩特性，已经成为现有大多数图像和视频编码标准的核心技术。
应用推荐