| 2. | After studied for several decades , there have appeared several classical edge operators , such as roberts , sobel , laplacian , canny and log . meanwhile , there also have presented several classical algorithms of image restoration , such as inverse filter , wiener filter and constrained least squares filter
经过多年的研究,已经形成了roberts算子、 sobel算子、 laplacian算子、 canny算子、 log算子等经典的边缘检测算子以及逆滤波、维纳滤波、约束最小二值滤波等经典的图像恢复方法。 |
