Abstract: A DEW video watermarking algorithm based on energy difference ratio was proposed. This algorithm embeds watermarks in energy-equally-distributed areas of I-frame video image blocks. Every I-frame has the same embedded-watermarking. Experimental results show that the proposed watermarking algorithm not only has better performance in the aspect of robustness but also has stable rates and high reliability in the test.

Key words: Video watermarking,Energy difference ratio,DEW,I-frame