Table 2
Comparison between Sobel and Canny edge detection techniques.
| Method | Sensitivity | Operation | Advantage | Disadvantage |
|---|---|---|---|---|
| Sobel operator | Medium | Maximum of edges are identified with respect to perpendicular angle | Finding of smooth edges, used for image segmentation, simplicity | Computation time is high compare to Robert operator, less sensitive to noise high compare to Robert operator |
| Canny Operator | High | Used to eliminate the noise and to find the effective edges | Finding the error rate is high, performance is good, used for image enhancement, smooth noise, good localization | High computation time, complex process, false zero crossing. |