亚像素边缘检测算法 [英] Sub-Pixel Edge Detector Algorithm

问题描述

我正在进行边缘检测，我尝试了canny（matlab函数）的方法。但它只检测像素级别的边缘，我正在寻找高精度的亚像素边缘检测算法/代码。

I am working on edge detection, i tried the method of canny(matlab function). but it only detect edge in the pixel level, I'm looking for a subpixel edge detection algorithm/code with high accuracy.

推荐答案

AFAIK最先进的边缘检测算法以像素级精度运行（例如， gPb ）。

AFAIK state-of-the-art edge detection algorithms operate at a pixel-level accuracy (e.g., gPb).

如果您想获得亚像素精度，您可以应用后期处理阶段通过canny或gPb获得的像素级结果。

If you want to get sub-pixel accuracy, you may apply a post-processing stage to the pixel-level results obtained by canny or gPb.

您可以将参数曲线拟合到检测到的边缘的小邻域，从而获得子像素精度。

You can fit a parametric curve to small neighborhoods of detected edges thus obtaining sub-pixel accuracy.

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