如何在OpenCV中锐化图像? [英] How can I sharpen an image in OpenCV?

问题描述

如何使用 OpenCV 来锐化图像?

有很多平滑或模糊的方法，但我看不到任何锐化的方法.

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

推荐答案

维基百科有关锐化遮罩的文章:

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恒定).

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的精简版本转换为image :(均为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);

您需要自己调整一些参数.

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

还有拉普拉斯锐化，您应该在Google上找到一些东西.

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

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