由网友(我的世界不缺狗)分享简介:可以在任何点图像变形的算法?专门为隆起的效果呢?Can any point to image warping algorithms? Specifically for bulge effect?推荐答案看看我明白你想要什么。假设你的图像坐标从0到1。See if I understood what you wa...
可以在任何点图像变形的算法?专门为隆起的效果呢?
Can any point to image warping algorithms? Specifically for bulge effect?
推荐答案
看看我明白你想要什么。假设你的图像坐标从0到1。
See if I understood what you want. Suppose your image coordinates go from 0 to 1.
如果你这样做:
r = Sqrt[(x - .5)^2 + (y - .5)^2]
a = ArcTan[x - .5, y - .5]
rn = r^2.5/.5
然后再根据重新映射像素:
And then remap your pixels according to:
x -> rn*Cos[a] + .5
y -> rn*Sin[a] + .5
您获得:
您可以调整参数,以获得更大或更小凸起。
You may adjust the parameters to get bigger or smaller bulges.
修改
让我们来看看,如果我理解您的评论对翘曲。使用生成以下图片
Let's see if I understood your comment about warping. The following images are generated using
rn = r^k {k: 1 ... 2}:
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