Laplacian of Gaussian refers to convolution of a Gaussian smoothing mask with a Laplacian filter.
The Laplacian is a 2-D isotropic measure of the 2nd spatial derivative of an image. Hence it can be used for effective edge detection.
Anaysis of multiple technices applied with varying size and levels of smoothing. to produce effective edge detection on an image of cells.
Report/Resources/images/best.eps
| Sobel | Roberts | Gaussian | LoG | Laplacian | |
|---|---|---|---|---|---|
| Specificity | 0.8514 | 0.8569 | 0.8363 | 0.8005 | 0.7204 |
| Sensitivity | 0.8698 | 0.8525 | 0.8773 | 0.9353 | 0.5534 |