如何在 OpenCV 中锐化图像?

问题描述

如何使用 OpenCV 锐化图像?

How can I sharpen an image using OpenCV?

有很多平滑或模糊的方法，但我没有看到锐化.

There are many ways of smoothing or blurring but none that I could see of sharpening.

推荐答案

关于非锐化蒙版的维基百科文章:

您使用高斯平滑滤波器并从原始图像中减去平滑版本(以加权方式使恒定区域的值保持不变).

You use a Gaussian smoothing filter and subtract the smoothed version from the original image (in a weighted way so the values of a constant area remain constant).

要将frame 的锐化版本转换为image: (both cv::Mat)

To get a sharpened version of frame into image: (both cv::Mat)

cv::GaussianBlur(frame, image, cv::Size(0, 0), 3);
cv::addWeighted(frame, 1.5, image, -0.5, 0, image);

这里的参数需要你自己调整.

The parameters there are something you need to adjust for yourself.

还有拉普拉斯锐化，你应该在谷歌时找到一些东西.

There's also Laplacian sharpening, you should find something on that when you google.

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