本文介绍了openCV中的高斯拉普拉斯算子，如何找到零交叉?的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
openCV中有拉普拉斯函数，可直接计算双导数.但这并不意味着我会取得优势吗?因为在输出中有许多负值.我经过这个链接，意识到在那之后我还必须找到零交叉点.我不知道如何找到零交叉.有人可以帮我吗?
There is Laplacian function in openCV which directly calculate the double derivative. But this doesn't mean I will get the edges right? Because in the output there are many negative values.I go through this link and realized that after that also I had to find zero-crossings. I don't get how to find zero crossings. Can somebody help me ?
推荐答案
当以下情况发生零交叉
- 值等于0，或
- 两个相邻值的符号相反
如果您有类似的东西
Laplacian(src, dst, CV_16S);
您只需要扫描dst查找这两种情况
You just need to scan dst looking for those two cases
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