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我正在用 C++ 实现 Canny 边缘检测。我陷入了双阈值。我已经手动给出了阈值,这对于给定的图像工作正常。但是当我在其他图像上尝试时,阈值不正确并且图像看起来不太好。有没有办法自动获取给定的阈值图片。