图像合成技术很重要，其实质是操作将两幅或两幅以上的图像，将它们的信息融合在一起，产生1+1>2 的效果。我们在进行图像合成的时候可

以采用Alpha 值的方法，下面来看一下如何利用Alpha 值来合成两张图片。-Image synthesis technology is important, and its essence is the operation two or two or more images to their information together to produce 1+1>　2 results. During the time we can image synthesis method based on the Alpha value, the following look at how to use the Alpha value to synthesize two pictures.