...印,人类视觉系统,JPEG量化,离散余弦变换 [gap=1551]Keywords digital watermark, human visual system (HVS), JPEG quantization, discrete cosine transformation (DCT) ..
基于12个网页-相关网页
Next, it modified the standard JPEG quantization table for the purpose of accommodating more secret messages.
接着修改了JPEG标准量化表以便能够嵌入较多的信息;
This paper mainly presents some improvements on computing discrete cosine transforms (DCT) and quantization part in the standard of JPEG image processing.
主要对JPEG图像压缩标准中的DCT变换和量化部分提出了一些改进意见。
应用推荐