image-processing - RGB图像的边缘检测器？

Question

我已经为灰度图像实现了 Sobel、Prewitt 和 Canny 边缘检测器。我是否对 RGB 图像的每个通道应用相同的操作？

谢谢

Answer 1

The simplest approach is to apply edge detectors to the three color channels (RGB or HSV) independently, and to combine the results using logical operation (output fusion method).

There are also more sophisticated methods, which treat the three channels as coordinates of the 3D color space, and try to find edges by analyzing the gradient (multi-dimensional gradient methods).

Source1 Source2

Answer 2

还有另一种计算三个通道平均值的方法（也可以加权），并对其应用边缘检测。

Answer 3

我自己没有尝试过，但我希望通过先转换为像 YUV 这样的色彩空间，你会得到更好的结果。