保护作品好利器——隐形水印（桔子系列教程）
这个话题是老调重谈了，大都是用“差值”或是“排除”混合模式，其实原理都是一样的。都是通过反相的小方格子进行水印隐藏的。用来保护网上作品是不错的方法。有朋友又问起这个话题，就告诉大家一种最直接的方法，反相法来制作这个隐形水印。www.ad119.cn/bbs/attachments/photoshop/20090113/20091148263793777801.jpg
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