But, there are some obvious disadvantages in traditional DCT transform, such as long encoding and decoding time costing, blocking effects and so on.
但传统的DCT变换存在一些明显的缺点,如编码时间/解码时间较长和“块效应”明显等。
参考来源 - 基于DCT变换的图像编码方法研究·2,447,543篇论文数据,部分数据来源于NoteExpress
Low bit rate JPEG compressed images usually demonstrate serious blocking effects.
低比特率JPEG压缩图象往往产生严重的方块效应。
LOT is first adopted in the watermarking algorithm instead of DCT, which greatly reduces the blocking effects.
本文首次在水印算法中采用了LOT以代替传统的离散余弦变换(DCT),从而有效地避免了DCT的块效应。
The blocking mechanism of GY-1 is discussed and its blocking effects and blocking rules are experimentally studied.
讨论了GY-1封窜剂的封堵机理,并对其封堵效果及封堵规律进行了室内研究。
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