如何使用opencv查找模糊角位置? [英] how to find blur corner position with opencv?

问题描述

我想找到一个模糊图像的角位置，该图像内有一个角.类似于以下示例:

I want to find the corner position of an blurred image with a corner inside it. like the following example:

我可以确保图像中只有一个角，并且我认为

I can make sure that only one corner is inside the image, and I assume that

角落是黑白棋盘的一部分.

the corner is part of a black and white chessboard.

如何使用openCV检测交叉位置?谢谢！

How can I detect the cross position with openCV? Thanks!

推荐答案

而不是像其他人建议的那样，立即大幅度地工作，我建议先缩小尺寸(这会产生去模糊的效果)，然后进行一次哈里斯(Harris)找到拐角，然后放大其位置，并以较大的分辨率通过大窗口(足够大以包含强度的明显鞍点)通过findCornerSubpix.

Rather than work right away at a ridiculously large scale, as suggested by others, I recommend downsizing first (which has the effect of deblurring), do one pass of Harris to find the corner, then upscale its position and do a pass of findCornerSubpix at full resolution with a large window (large enough to encompass the obvious saddle point of the intensity).

通过这种方式，您可以两全其美:快速检测以初始化细化，并根据原始图像进行精确细化.

In this way you get the best of both worlds: fast detection to initialize the refinement, and accurate refinement given the original imagery.

另请参见此其他相关答案

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