Table 2 A summary of the minimum, maximum and standard deviation values of the error \(\delta_{k}\) obtained for 110 patients for all the compared methods: Sobel, Roberts, Canny and the author’s (proposed) method of outer corneal edge detection in images from the Corvis® ST tonometer
From: A new method for detecting the outer corneal contour in images from an ultra-fast Scheimpflug camera
Method | δk(min) (%) | δk(max) (%) | std (%) |
|---|---|---|---|
Proposed | 0.11 | 1.25 | 0.13 |
Sobel | 0.35 | 30.02 | 5.76 |
Roberts | 0.26 | 47.45 | 8.66 |
Canny | 0.61 | 28.36 | 2.78 |