如何在OpenCV中获取gabor内核矩阵的实部和虚部 [英] How to get the real and imaginary parts of a gabor kernel matrix in OpenCV

问题描述

OpenCV初学者和糟糕的数学。
我的工作是将Gabor滤镜应用于标准化图像。我只知道OpenCV有一个 getGaborKernel 函数，我想知道这个函数的返回矩阵是内核的实部或虚部。
如果我不能使用这个函数，那么我该如何生成这些内核？
使用Java API，但C ++代码没问题。

A OpenCV beginner and bad math. My job is to apply the Gabor filter to a normalized image. And I only know that OpenCV has a getGaborKernel function, and i want to know the return Matrix of this function is the real part or the imaginary part of the kernel. If I can't use this function, then how can I generate those kernel? Using Java API, but C++ code is fine.

推荐答案

你可以在 gabor.cpp 第87行它正在计算真实 part（根据维基百科）。

You can see in gabor.cpp at line 87 that it's computing the real part (according to wikipedia).

double v = scale*std::exp(ex*xr*xr + ey*yr*yr)*cos(cscale*xr + psi);

您可以将此行修改为虚构部分（如报告这里）

You can get the imaginary part modifying this line to (as reported also here)

double v = scale*std::exp(ex*xr*xr + ey*yr*yr)*sin(cscale*xr + psi);
                                               ^^^

获得内核后，可以将其与函数<一起使用a href =http://docs.opencv.org/2.4/modules/imgproc/doc/filtering.html?#filter2d =nofollow> filter2d

Once you have your kernel, you can use it with the function filter2d

这篇关于如何在OpenCV中获取gabor内核矩阵的实部和虚部的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！