流水灯两种操作方法详解，包含位操作与总线式两种方法操作流水灯，并加入延时处理。-Light water explain two methods of operation, including bus-bit operation and flow in two ways to operate lights, and add delay to deal with.

data hiding loss less apply in water marking-data hiding loss less apply in water marking

利用小波变换给数字加盲水印的代码。 svd+dwt(a method using svd and dwt to embed and extract water mark from image)